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	<title>GRUAN Communication Platform</title>
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	<description>Blog of GCOS Reference Upper-Air Network</description>
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		<title>GRUAN Communication Platform</title>
		<link>http://gruan.wordpress.com</link>
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		<item>
		<title>GATNDOR Conference Call Notes &#8211; 12 January 2012</title>
		<link>http://gruan.wordpress.com/2012/01/18/gatndor-conference-call-notes-12-january-2012/</link>
		<comments>http://gruan.wordpress.com/2012/01/18/gatndor-conference-call-notes-12-january-2012/#comments</comments>
		<pubDate>Wed, 18 Jan 2012 15:55:20 +0000</pubDate>
		<dc:creator>FABIO MADONNA</dc:creator>
				<category><![CDATA[GATNDOR]]></category>
		<category><![CDATA[Team]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=557</guid>
		<description><![CDATA[Participants: Fabio Madonna, Tom Gardiner, Alessandro Fasso, June Wang, Dave Whiteman, Greg Bodeker, Peter Thorne, Dian Seidel 1. Note-taker volunteer Dian volunteered. 2. Progress report from GATNDOR topic and results for ICM-4 (Alessandro, Fabio, June) Topic 1 – Tool box for characterizing uncertainties Alessandro summarized statistical models to characterize radiosonde errors in temperature profiles in [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=557&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2012/01/18/gatndor-conference-call-notes-12-january-2012/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">fada1978</media:title>
		</media:content>
	</item>
		<item>
		<title>GATNDOR 6 October 2011 Conference Call Notes</title>
		<link>http://gruan.wordpress.com/2011/10/11/gatndor-6-october-2011-conference-call-notes/</link>
		<comments>http://gruan.wordpress.com/2011/10/11/gatndor-6-october-2011-conference-call-notes/#comments</comments>
		<pubDate>Tue, 11 Oct 2011 11:29:54 +0000</pubDate>
		<dc:creator>FABIO MADONNA</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=547</guid>
		<description><![CDATA[GATNDOR held a conference call on 23 May 2011, to discuss progress on scientific topics currently under investigation. The summary notes of the call are pasted below. GATNDOR call notes Date: Thursday, October 6, 2011 Time: 4:00 pm, Europe Summer Time (Berlin, GMT+02:00) Participant: Fabio, Alessandro, John, June, Peter, Dave, Dian 1. Note-taker volunteer Peter [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=547&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2011/10/11/gatndor-6-october-2011-conference-call-notes/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">fada1978</media:title>
		</media:content>
	</item>
		<item>
		<title>Questions on Validating Atmospheric Profiles</title>
		<link>http://gruan.wordpress.com/2011/09/14/questions-on-validating-atmospheric-profiles/</link>
		<comments>http://gruan.wordpress.com/2011/09/14/questions-on-validating-atmospheric-profiles/#comments</comments>
		<pubDate>Wed, 14 Sep 2011 15:32:45 +0000</pubDate>
		<dc:creator>sbojinski</dc:creator>
				<category><![CDATA[Cal/Val]]></category>
		<category><![CDATA[Remote Sensing]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=539</guid>
		<description><![CDATA[Tony, John, In the latest TT5 report, NPROVS (NOAA Products Validation System) as well as SASBE (Site Atmospheric State Best Estimate) are mentioned as elements of TT5 activities. I have three questions  (I am yet to get fully familiar with discussions on ancillary measurements and the topic &#8216;GRUAN for satellite product validation&#8217;, so forgive me [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=539&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2011/09/14/questions-on-validating-atmospheric-profiles/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">sbojinski</media:title>
		</media:content>
	</item>
		<item>
		<title>Pre-launch procedures for RS92 soundings</title>
		<link>http://gruan.wordpress.com/2011/06/23/pre-launch-procedures-for-rs92-soundings/</link>
		<comments>http://gruan.wordpress.com/2011/06/23/pre-launch-procedures-for-rs92-soundings/#comments</comments>
		<pubDate>Thu, 23 Jun 2011 16:59:44 +0000</pubDate>
		<dc:creator>Franz Immler</dc:creator>
				<category><![CDATA[Data quality]]></category>
		<category><![CDATA[Radiosonde]]></category>
		<category><![CDATA[Station]]></category>
		<category><![CDATA[Temperature]]></category>
		<category><![CDATA[TT1-Radiosondes]]></category>
		<category><![CDATA[Uncertainty]]></category>
		<category><![CDATA[Vaisala RS92]]></category>
		<category><![CDATA[Water vapour]]></category>
		<category><![CDATA[Wind]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=525</guid>
		<description><![CDATA[Attached is a document describing the requirements for GRUAN station regarding the pre-launch procedures for routine soundings with Vaisala RS92 radiosondes.  In order to obtain high data quality, ensure long term stability,  and to make sure that measurement uncertainties are within the ranges that are reported in the product files, it is important that some [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=525&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2011/06/23/pre-launch-procedures-for-rs92-soundings/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">GRUANssc</media:title>
		</media:content>
	</item>
		<item>
		<title>GATNDOR 23 May 2011 Conference Call Notes</title>
		<link>http://gruan.wordpress.com/2011/06/09/gatndor-conference-call-notes/</link>
		<comments>http://gruan.wordpress.com/2011/06/09/gatndor-conference-call-notes/#comments</comments>
		<pubDate>Thu, 09 Jun 2011 10:37:04 +0000</pubDate>
		<dc:creator>dianseidel</dc:creator>
				<category><![CDATA[Conference Call]]></category>
		<category><![CDATA[GATNDOR]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=511</guid>
		<description><![CDATA[GATNDOR held a conference call on 23 May 2011, to discuss administrative issues and progress on current projects. The summary notes of the call are pasted below. Note-taker volunteer – Dian volunteered. Notes here follow the meeting agenda. At the start of the call, Fabbio invited June to summarize several issues because she could not [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=511&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2011/06/09/gatndor-conference-call-notes/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">dianseidel</media:title>
		</media:content>
	</item>
		<item>
		<title>Report for the 2010 WMO intercomparison of radiosonde systems in Yangjiang, China published</title>
		<link>http://gruan.wordpress.com/2011/05/26/2010-wmo-intercomparison-yangjiang-china/</link>
		<comments>http://gruan.wordpress.com/2011/05/26/2010-wmo-intercomparison-yangjiang-china/#comments</comments>
		<pubDate>Thu, 26 May 2011 14:56:39 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[Campaign]]></category>
		<category><![CDATA[Document]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=498</guid>
		<description><![CDATA[The report describing the results of the WMO Intercomparison of High Quality Radiosonde Systems, which took place in Yangjiang,  China between 12 July &#8211; 3 August 2010 has just been published. The report is available at http://www.wmo.int/pages/prog/www/IMOP/publications/IOM-107_Yangjiang.pdf EXECUTIVE SUMMARY The 8th WMO Intercomparison of High Quality Radiosonde Systems held in China in July 2010 has [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=498&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2011/05/26/2010-wmo-intercomparison-yangjiang-china/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Holger Vömel</media:title>
		</media:content>
	</item>
		<item>
		<title>Software version missing as meta data in operational radiosonde data transmitted through the GTS?</title>
		<link>http://gruan.wordpress.com/2011/05/26/software-version-missing-as-meta-data/</link>
		<comments>http://gruan.wordpress.com/2011/05/26/software-version-missing-as-meta-data/#comments</comments>
		<pubDate>Thu, 26 May 2011 14:23:37 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[Meta-data]]></category>
		<category><![CDATA[Vaisala RS92]]></category>
		<category><![CDATA[Water vapour]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=489</guid>
		<description><![CDATA[Vaisala has recently introduced a software version 3.64 for the Digicora III radiosonde processing system.  This software version includes several important correction algorithms, which lead to an improved humidity product of the Vaisala RS92 radiosonde. It has been well documented that the Vaisala RS92 radiosonde processed under previous software versions suffered from a daytime dry [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=489&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2011/05/26/software-version-missing-as-meta-data/feed/</wfw:commentRss>
		<slash:comments>4</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Holger Vömel</media:title>
		</media:content>
	</item>
		<item>
		<title>GATNDOR Work Plan April 2011-March 2012</title>
		<link>http://gruan.wordpress.com/2011/05/13/gatndor-work-plan-april-2011-march-2012/</link>
		<comments>http://gruan.wordpress.com/2011/05/13/gatndor-work-plan-april-2011-march-2012/#comments</comments>
		<pubDate>Fri, 13 May 2011 08:31:40 +0000</pubDate>
		<dc:creator>FABIO MADONNA</dc:creator>
				<category><![CDATA[GATNDOR]]></category>
		<category><![CDATA[Plan]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=466</guid>
		<description><![CDATA[GATNDOR Scope GATNDOR is a research team supporting the development and implementation of GRUAN on scientifically sound foundations.  The team performs focused, short-term research to address specific topics identified by the GRUAN science and management community.  GATNDOR efforts are coordinated with those other GRUAN Task Teams and with national GCOS programs when appropriate. GATNDOR Concept [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=466&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2011/05/13/gatndor-work-plan-april-2011-march-2012/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">fada1978</media:title>
		</media:content>
	</item>
		<item>
		<title>Protected: RS92 product for GRUAN open for discussion (currently TT1 only)</title>
		<link>http://gruan.wordpress.com/2011/02/21/rs92-product-for-gruan-open-for-discussion-currently-tt1-only/</link>
		<comments>http://gruan.wordpress.com/2011/02/21/rs92-product-for-gruan-open-for-discussion-currently-tt1-only/#comments</comments>
		<pubDate>Mon, 21 Feb 2011 17:51:20 +0000</pubDate>
		<dc:creator>Franz Immler</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=454</guid>
		<description><![CDATA[There is no excerpt because this is a protected post.<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=454&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2011/02/21/rs92-product-for-gruan-open-for-discussion-currently-tt1-only/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">GRUANssc</media:title>
		</media:content>
	</item>
		<item>
		<title>Protected: GRUAN recommendation for radiosonde pre-launch QC (this discussion is currently within Task Team 1 members only)</title>
		<link>http://gruan.wordpress.com/2011/02/04/gruan-recommendation-for-radiosonde-pre-launch-qc/</link>
		<comments>http://gruan.wordpress.com/2011/02/04/gruan-recommendation-for-radiosonde-pre-launch-qc/#comments</comments>
		<pubDate>Fri, 04 Feb 2011 13:38:24 +0000</pubDate>
		<dc:creator>Franz Immler</dc:creator>
				<category><![CDATA[Radiosonde]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=442</guid>
		<description><![CDATA[There is no excerpt because this is a protected post.<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=442&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2011/02/04/gruan-recommendation-for-radiosonde-pre-launch-qc/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">GRUANssc</media:title>
		</media:content>
	</item>
		<item>
		<title>GRUAN manual open for discussion</title>
		<link>http://gruan.wordpress.com/2011/01/25/gruan-manual-open-for-discussion/</link>
		<comments>http://gruan.wordpress.com/2011/01/25/gruan-manual-open-for-discussion/#comments</comments>
		<pubDate>Tue, 25 Jan 2011 15:19:27 +0000</pubDate>
		<dc:creator>Franz Immler</dc:creator>
				<category><![CDATA[Document]]></category>
		<category><![CDATA[General]]></category>
		<category><![CDATA[Instrument]]></category>
		<category><![CDATA[Manual]]></category>
		<category><![CDATA[Measurand]]></category>
		<category><![CDATA[Measuring]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=421</guid>
		<description><![CDATA[Here is a first draft of the GRUAN manual (formerly called the GRUAN guide but now renamed to be consistent with WMO nomenclature). Click here for a MS_doc version. This is a draft whose main purposes are: 1) To encourage discussion around a number of issues and to push the development of GRUAN on various [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=421&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2011/01/25/gruan-manual-open-for-discussion/feed/</wfw:commentRss>
		<slash:comments>4</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">GRUANssc</media:title>
		</media:content>
	</item>
		<item>
		<title>GATNDOR conference call minutes</title>
		<link>http://gruan.wordpress.com/2010/11/03/gatndor-conference-call-minutes/</link>
		<comments>http://gruan.wordpress.com/2010/11/03/gatndor-conference-call-minutes/#comments</comments>
		<pubDate>Wed, 03 Nov 2010 14:59:45 +0000</pubDate>
		<dc:creator>jadykema</dc:creator>
				<category><![CDATA[Conference Call]]></category>
		<category><![CDATA[GATNDOR]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=410</guid>
		<description><![CDATA[GATNDOR held a conference call on October 7, 2010, to discuss administrative issues and progress on current projects. The summary minutes of the call are pasted below. GATNDOR minutes 7 October 2010 Call begins with introductions of Greg (NZ) contracted by DWD/Holger to draft GRUAN Guide (as opposed to GRUAN Manual), expects to build on [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=410&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2010/11/03/gatndor-conference-call-minutes/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">jadykema</media:title>
		</media:content>
	</item>
		<item>
		<title>Meisei Temperature Reference (MTR) sonde</title>
		<link>http://gruan.wordpress.com/2010/08/27/meisei-temperature-reference-mtr-sonde/</link>
		<comments>http://gruan.wordpress.com/2010/08/27/meisei-temperature-reference-mtr-sonde/#comments</comments>
		<pubDate>Fri, 27 Aug 2010 09:29:23 +0000</pubDate>
		<dc:creator>masatomofujiwara</dc:creator>
				<category><![CDATA[Reference]]></category>
		<category><![CDATA[Temperature]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=403</guid>
		<description><![CDATA[A paper on the Meisei Temperature Reference (MTR) sonde (by K. Shimizu and F. Hasebe) has been submitted to the Atmospheric Measurement Technology journal and now is under the open review process (link). The MTR sondes were flown with the Sippican multithermistor sondes and other sensors during the 8th WMO Intercomparison of Radiosonde Systems campaign in China [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=403&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2010/08/27/meisei-temperature-reference-mtr-sonde/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">masatomofujiwara</media:title>
		</media:content>
	</item>
		<item>
		<title>GRUAN Analysis Team for Network Design and Operations Research (GATNDOR)</title>
		<link>http://gruan.wordpress.com/2010/07/15/gatndor-activities-2010/</link>
		<comments>http://gruan.wordpress.com/2010/07/15/gatndor-activities-2010/#comments</comments>
		<pubDate>Thu, 15 Jul 2010 20:28:13 +0000</pubDate>
		<dc:creator>dianseidel</dc:creator>
				<category><![CDATA[Conference Call]]></category>
		<category><![CDATA[GATNDOR]]></category>
		<category><![CDATA[Plan]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=364</guid>
		<description><![CDATA[Updated information on GATNDOR activities and plans is available in the 2010-2011 GATNDOR Work Plan and GATNDOR conference call notes. Both have been posted to the blog in pdf form. GATNDOR Work Plan 2010-2011 GATNDOR Conference Call Notes July 2010 Filed under: Conference Call, GATNDOR, Plan<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=364&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2010/07/15/gatndor-activities-2010/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">dianseidel</media:title>
		</media:content>
	</item>
		<item>
		<title>Data-flow manual open for discussion</title>
		<link>http://gruan.wordpress.com/2010/07/13/data-flow-manual/</link>
		<comments>http://gruan.wordpress.com/2010/07/13/data-flow-manual/#comments</comments>
		<pubDate>Tue, 13 Jul 2010 14:24:19 +0000</pubDate>
		<dc:creator>Michael Sommer</dc:creator>
				<category><![CDATA[Data dissemination]]></category>
		<category><![CDATA[Data format]]></category>
		<category><![CDATA[Document]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=345</guid>
		<description><![CDATA[The lead centre has prepared a collection scheme for meta-data related to GRUAN measurements. All information describing sites, measuring systems, and measurements will be collected with well-defined XML files and stored in a meta-data base at the lead centre. There are comfortable tools available programmed in Java for generating and submitting the GRUAN meta-data (GMD) [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=345&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2010/07/13/data-flow-manual/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Michael Sommer</media:title>
		</media:content>
	</item>
		<item>
		<title>First GATNDOR post-ICM2 conference call</title>
		<link>http://gruan.wordpress.com/2010/05/18/first-gatndor-post-icm2-conference-call/</link>
		<comments>http://gruan.wordpress.com/2010/05/18/first-gatndor-post-icm2-conference-call/#comments</comments>
		<pubDate>Tue, 18 May 2010 13:53:02 +0000</pubDate>
		<dc:creator>jadykema</dc:creator>
				<category><![CDATA[Conference Call]]></category>
		<category><![CDATA[Data]]></category>
		<category><![CDATA[GATNDOR]]></category>
		<category><![CDATA[Instrument]]></category>
		<category><![CDATA[Measuring]]></category>
		<category><![CDATA[Network]]></category>
		<category><![CDATA[Remote Sensing]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=336</guid>
		<description><![CDATA[The GRUAN Analsyis Team for Network Design and Operations Research (GATNDOR) held its first post-ICM2 quarterly conference call on April 12, 2010 at 10 AM EDT (-4 UTC). The main business of the meeting was to solidify the new membership roster, refine the active research topics, and share plans for executing the work up to [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=336&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2010/05/18/first-gatndor-post-icm2-conference-call/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">jadykema</media:title>
		</media:content>
	</item>
		<item>
		<title>Reference guidelines are online for discussion</title>
		<link>http://gruan.wordpress.com/2010/04/20/reference-guidelines/</link>
		<comments>http://gruan.wordpress.com/2010/04/20/reference-guidelines/#comments</comments>
		<pubDate>Tue, 20 Apr 2010 08:11:31 +0000</pubDate>
		<dc:creator>Franz Immler</dc:creator>
				<category><![CDATA[Article]]></category>
		<category><![CDATA[Cal/Val]]></category>
		<category><![CDATA[Data]]></category>
		<category><![CDATA[Manual]]></category>
		<category><![CDATA[Reference]]></category>
		<category><![CDATA[Temperature]]></category>
		<category><![CDATA[Uncertainty]]></category>
		<category><![CDATA[Vaisala RS92]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=324</guid>
		<description><![CDATA[The paper &#8220;A guide for upper-air reference measurements&#8221; by F. Immler, J. Dykema, T. Gardiner, D. N. Whiteman, P. W. Thorne, and H. Vömel went online on the interactive Journal &#8220;Atmospheric Measurement Techniques&#8221; where it is open for public discussion for eight weeks (link). Everybody is invited to comment on the paper on the online discussion forum. More informally, comments are also welcome [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=324&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2010/04/20/reference-guidelines/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">GRUANssc</media:title>
		</media:content>
	</item>
		<item>
		<title>Inventory of GRUAN Sites – First Version</title>
		<link>http://gruan.wordpress.com/2010/03/29/inventory-of-gruan-sites/</link>
		<comments>http://gruan.wordpress.com/2010/03/29/inventory-of-gruan-sites/#comments</comments>
		<pubDate>Mon, 29 Mar 2010 16:02:11 +0000</pubDate>
		<dc:creator>Michael Sommer</dc:creator>
				<category><![CDATA[Station]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=316</guid>
		<description><![CDATA[On our GRUAN homepage a first version of a site inventory (description) is available now. It is very much appreciated if all GRUAN site managers could examine their site page(s) and advice me (per comment or email) of bugs or gaps which have slipped in. Very welcome are any feedbacks about structure, layout and/or information [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=316&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2010/03/29/inventory-of-gruan-sites/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Michael Sommer</media:title>
		</media:content>
	</item>
		<item>
		<title>Funding Announcement for the Atmospheric System Research (ASR) program</title>
		<link>http://gruan.wordpress.com/2010/03/15/funding-asr-program/</link>
		<comments>http://gruan.wordpress.com/2010/03/15/funding-asr-program/#comments</comments>
		<pubDate>Mon, 15 Mar 2010 10:58:01 +0000</pubDate>
		<dc:creator>Michael Sommer</dc:creator>
				<category><![CDATA[Funding]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=311</guid>
		<description><![CDATA[The Office of Biological and Environmental Research within the U.S. Department of Energy&#8217;s Office of Science has posted the first Atmospheric System Research (ASR) Funding Opportunity Announcement (FOA) to develop innovative laboratory and observational data analyses and to utilize the resulting knowledge from such analyses to improve cloud and aerosol formulations in global climate models. [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=311&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2010/03/15/funding-asr-program/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Michael Sommer</media:title>
		</media:content>
	</item>
		<item>
		<title>ICM-2 Presentations</title>
		<link>http://gruan.wordpress.com/2010/03/10/icm-2-presentations/</link>
		<comments>http://gruan.wordpress.com/2010/03/10/icm-2-presentations/#comments</comments>
		<pubDate>Wed, 10 Mar 2010 15:06:44 +0000</pubDate>
		<dc:creator>Michael Sommer</dc:creator>
				<category><![CDATA[ICM]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=301</guid>
		<description><![CDATA[Now all presentations (as PDF files) are available for ICM-2. Please go to our website. Filed under: ICM<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=301&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2010/03/10/icm-2-presentations/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Michael Sommer</media:title>
		</media:content>

		<media:content url="http://gruan.files.wordpress.com/2010/03/2010-03-03_gruan_payerne_1_2400.jpg?w=300" medium="image">
			<media:title type="html">ICM-2_Payerne_2010</media:title>
		</media:content>
	</item>
		<item>
		<title>LAPBIAT2 campaign in Sodankylä/Finland</title>
		<link>http://gruan.wordpress.com/2010/02/09/lapbiat2/</link>
		<comments>http://gruan.wordpress.com/2010/02/09/lapbiat2/#comments</comments>
		<pubDate>Tue, 09 Feb 2010 15:12:25 +0000</pubDate>
		<dc:creator>Franz Immler</dc:creator>
				<category><![CDATA[Campaign]]></category>
		<category><![CDATA[CFH]]></category>
		<category><![CDATA[Water vapour]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=273</guid>
		<description><![CDATA[The GRUAN station FMI-ARC in Sodankylä Finland organized an atmospheric sounding campaign in early 2010, which included participants from several countries. The first phase of the campaign was focussing on radiosonde inter-comparisons that were carried out in January-February 2010. Different commercial and research grade in situ instruments were launched with a focus on the comparison [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=273&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2010/02/09/lapbiat2/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">GRUANssc</media:title>
		</media:content>
	</item>
		<item>
		<title>ICM-2</title>
		<link>http://gruan.wordpress.com/2010/02/09/icm-2/</link>
		<comments>http://gruan.wordpress.com/2010/02/09/icm-2/#comments</comments>
		<pubDate>Tue, 09 Feb 2010 12:33:57 +0000</pubDate>
		<dc:creator>Michael Sommer</dc:creator>
				<category><![CDATA[ICM]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=268</guid>
		<description><![CDATA[The second GRUAN Implementation-Coordination Meeting (ICM-2) will take place in Payerne, Switzerland,  from March 2-4, 2010. On the agenda is an update on GRUAN progress and basic discussions on measurements, data quality and the requirements of climate monitoring among other things. The meeting will fix the milestones for the next year in order to make [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=268&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2010/02/09/icm-2/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Michael Sommer</media:title>
		</media:content>
	</item>
		<item>
		<title>GRUAN Data Management Meeting 2009</title>
		<link>http://gruan.wordpress.com/2010/02/09/gdm-meeting-2009/</link>
		<comments>http://gruan.wordpress.com/2010/02/09/gdm-meeting-2009/#comments</comments>
		<pubDate>Tue, 09 Feb 2010 12:32:25 +0000</pubDate>
		<dc:creator>Michael Sommer</dc:creator>
				<category><![CDATA[Data]]></category>
		<category><![CDATA[Meeting]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=262</guid>
		<description><![CDATA[from Howard Diamond (2010-01-15): In October 2009 a meeting was held at the NCDC facilities in Ashville with pariticipation  from the GRUAN lead center in Lindenberg/Germany, NCDC and DOE/ARM. The focus of the meeting was on data management issues within the GRUAN network. This meeting  gave a good roadmap regarding the GRUAN data management activities [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=262&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2010/02/09/gdm-meeting-2009/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Michael Sommer</media:title>
		</media:content>
	</item>
		<item>
		<title>GRUAN Analysis Team for Network Design and Operations Research</title>
		<link>http://gruan.wordpress.com/2009/11/13/gatndor/</link>
		<comments>http://gruan.wordpress.com/2009/11/13/gatndor/#comments</comments>
		<pubDate>Fri, 13 Nov 2009 20:58:41 +0000</pubDate>
		<dc:creator>dianseidel</dc:creator>
				<category><![CDATA[GATNDOR]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=243</guid>
		<description><![CDATA[GRUAN Analysis Team for Network Design and Operations Research This post provides basic information about the GRUAN Analysis Team for Network Design and Operations Research. The team was an (unexpected) outcome of the 1st GRUAN Implement and Coordination Meeting (ICM1) in Norman, Oklahoma, in March 2009. As an informal and new team, its work plan [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=243&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2009/11/13/gatndor/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">dianseidel</media:title>
		</media:content>
	</item>
		<item>
		<title>Discussion on the co-location / coincidence issue</title>
		<link>http://gruan.wordpress.com/2009/11/11/co-location-issue/</link>
		<comments>http://gruan.wordpress.com/2009/11/11/co-location-issue/#comments</comments>
		<pubDate>Wed, 11 Nov 2009 10:36:48 +0000</pubDate>
		<dc:creator>Franz Immler</dc:creator>
				<category><![CDATA[Cal/Val]]></category>
		<category><![CDATA[General]]></category>
		<category><![CDATA[Reference]]></category>
		<category><![CDATA[Uncertainty]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=231</guid>
		<description><![CDATA[Recommendations on how to properly define co-location and coincidence for upper-air calibration or validation experiments.<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=231&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2009/11/11/co-location-issue/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">GRUANssc</media:title>
		</media:content>
	</item>
		<item>
		<title>GRUAN Implementation Plan</title>
		<link>http://gruan.wordpress.com/2009/08/06/gruan-implementation-plan/</link>
		<comments>http://gruan.wordpress.com/2009/08/06/gruan-implementation-plan/#comments</comments>
		<pubDate>Thu, 06 Aug 2009 14:49:19 +0000</pubDate>
		<dc:creator>peterthorne</dc:creator>
				<category><![CDATA[Document]]></category>
		<category><![CDATA[Plan]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=226</guid>
		<description><![CDATA[Now that the plan has been published (GCOS-134), please feel free to add comments on it in this thread. Comments offering resource (financial or in-kind) and interest in helping in certain aspects would be particularly welcome but please comment in any way you please. I&#8217;d also like to place on record my thanks to the [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=226&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2009/08/06/gruan-implementation-plan/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">peterthorne</media:title>
		</media:content>
	</item>
		<item>
		<title>Dissemination of near-real time data in the GRUAN</title>
		<link>http://gruan.wordpress.com/2009/07/30/near-real-time-data/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/near-real-time-data/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 13:15:24 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[Data dissemination]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=174</guid>
		<description><![CDATA[Anna Kuhn wrote: There is a discussion, if we want an Action Item on the possibility of dissemination of near-real time data in the GRUAN Implementation Plan. From my point of view, NRT data dissemination could be done by one or a combination the following options: Send data via the GTS, in BUFR (preferably), alphanumeric [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=174&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2009/07/30/near-real-time-data/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Holger Vömel</media:title>
		</media:content>
	</item>
		<item>
		<title>FAQ-01: Which altitude regions of our atmosphere make up the region of interest for GRUAN?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-01/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-01/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:17:08 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[FAQ]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=87</guid>
		<description><![CDATA[“Upper Air” as used in the context of GRUAN refers to the combined troposphere and stratosphere. GRUAN places a strong emphasis on the upper troposphere/lower stratosphere region, which has the strongest climate relevance and a large variability. Measurement capabilities for different atmospheric parameters may be strongly altitude dependent and thus the abilities to achieve climate [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=87&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2009/07/30/faq-01/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Holger Vömel</media:title>
		</media:content>
	</item>
		<item>
		<title>FAQ-02: What is the geographic coverage of GRUAN?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-02/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-02/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:16:36 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[FAQ]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=116</guid>
		<description><![CDATA[Once fully completed GRUAN will be a world-wide network of reference stations. These stations should cover all major climatic regions of our planet. In its initial stage, GRUAN is heavily centered around a number of sites in Europe and the continental United States, with one site in China, several sites in the Western Pacific and [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=116&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2009/07/30/faq-02/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Holger Vömel</media:title>
		</media:content>
	</item>
		<item>
		<title>FAQ-03: What is a &#8220;Reference Observation&#8221; for GRUAN?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-03/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-03/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:15:48 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[FAQ]]></category>
		<category><![CDATA[Reference]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=125</guid>
		<description><![CDATA[A reference observations is an observation that gives the best estimate for the measurand as well as the best estimate for the level of confidence in this measurement. The best estimate for the measurand is nothing else than the measurement itself, the estimate for the level of confidence is described by the measurement uncertainty. Therefore, [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=125&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2009/07/30/faq-03/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Holger Vömel</media:title>
		</media:content>
	</item>
		<item>
		<title>FAQ-04: How will GRUAN establish the measurement uncertainty?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-04/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-04/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:14:54 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[FAQ]]></category>
		<category><![CDATA[Uncertainty]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=128</guid>
		<description><![CDATA[The measurement uncertainty will be established by analysing all sources of measurement uncertainty and by combining them to one single error bar for each measurement point. The investigation of all sources of uncertainty will be a time consuming and iterative process and will require a detailed understanding of the instrumentation that is being used as [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=128&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2009/07/30/faq-04/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Holger Vömel</media:title>
		</media:content>
	</item>
		<item>
		<title>FAQ-05: Do GRUAN data distinguish between accuracy and precision?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-05/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-05/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:13:40 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[Data quality]]></category>
		<category><![CDATA[FAQ]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=132</guid>
		<description><![CDATA[No. Precision is the recognition that there might be systematic uncertainties in a measurement, which are irrelevant for long term trends as long as the instrumentation does not change. However, for climate records spanning multiple decades, it is expected that the instrumentation will change several times. In particular sounding equipment has gone through a rapid [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=132&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
		<wfw:commentRss>http://gruan.wordpress.com/2009/07/30/faq-05/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
		<media:content url="" medium="image">
			<media:title type="html">Holger Vömel</media:title>
		</media:content>
	</item>
		<item>
		<title>FAQ-06: How do GRUAN data deal with systematic biases?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-06/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-06/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:12:01 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[Data quality]]></category>
		<category><![CDATA[FAQ]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=139</guid>
		<description><![CDATA[Systematic errors have to be corrected. This means that studies are required to identify and quantify systematic biases. The solar radiation correction for the temperature measurement on radiosondes is a classic example for such a systematic bias that requires correction. Since no correction algorithm is perfect, this correction will then introduce a new and hopefully [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=139&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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		<title>FAQ-07: Do all GRUAN stations need to have identical instrumentation?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-07/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-07/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:11:24 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[FAQ]]></category>
		<category><![CDATA[Station]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=141</guid>
		<description><![CDATA[No. GRUAN stations will have a variety of instrumentation and observational platforms. The GRUAN challenge will be to homogenize the observations of this diverse set of instruments to establish a consistent data set that can be used for climate research, satellite validation and the characterization of the atmospheric column. However, to achieve homogeneity of observations [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=141&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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		<title>FAQ-08: What is state-of-the-art in terms of upper-air RH measurements?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-08/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-08/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:10:09 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[FAQ]]></category>
		<category><![CDATA[Water vapour]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=143</guid>
		<description><![CDATA[Currently the only balloon borne sounding instruments capable of measuring water vapour in the tropopause region and the stratosphere are the Cryogenic Frostpoint Hygrometer (CFH, and the closely related NOAA frostpoint hygrometer) and Fluorescent Advanced Stratospheric Hygrometer (FLASH). GRUAN encourages the development of new instruments and will allow the use of other sondes capable of [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=143&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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		<title>FAQ-09: How does GRUAN deal with GPS/Wind measurements where the accuracy is limited by the manufacturer?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-09/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-09/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:09:27 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[FAQ]]></category>
		<category><![CDATA[GPS]]></category>
		<category><![CDATA[Wind]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=145</guid>
		<description><![CDATA[GRUAN calls for an uncertainty for every measured parameter. This includes wind measurements as well. Differences in wind and position measurements by different GPS systems have already been noted and this topic is not trivial. Uncertainties as the best estimate for the level of confidence for a given measurement should be established from a detailed [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=145&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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		<title>FAQ-10: Advice on ATM radiosonde capability and operation since it needs a lot of &#8220;care&#8221;?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-10/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-10/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:08:18 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[FAQ]]></category>
		<category><![CDATA[Temperature]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=147</guid>
		<description><![CDATA[The Accurate Temperature Measuring (ATM) radiosonde is one instrument to quantify the solar radiation error of the temperature measurement. The use of such an instrument is highly encouraged and may be used with additional surface measurements aimed at quantifying the radiation error of different temperature sensors. Uncertainty estimates should be provided for this type of [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=147&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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		<title>FAQ-11: What are the procedures for operating CFH?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-11/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-11/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:07:58 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[CFH]]></category>
		<category><![CDATA[FAQ]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=151</guid>
		<description><![CDATA[Guidelines for all instruments will be developed and guidelines for the CFH are in progress. A team composed of different GRUAN participants using the same kind of instrument (such as the CFH or any other type of instrument) could take up this task. This would indeed be highly beneficial. The lead centre may motivate the [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=151&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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			<media:title type="html">Holger Vömel</media:title>
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		<title>FAQ-12: How far down are descent measurements are to be made?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-12/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-12/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:06:54 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[FAQ]]></category>
		<category><![CDATA[Measuring]]></category>
		<category><![CDATA[Radiosonde]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=153</guid>
		<description><![CDATA[Routine radiosondes generally provide better measurements on ascent. This is due to the fact that the rise rate is relatively constant and that in most instruments the sensor is oriented such that ascent measurements are less contaminated from the instrument package itself. Descent measurements may suffer from time lag issues on fast descending parachutes or [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=153&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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		<title>FAQ-13: What are the implications if a station does not launch twice daily sondes as &#8220;desired&#8221; in the GRUAN requirements, but, 00/12 UT production sondes are launched at a &#8220;near-by&#8221; operational site?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-13/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-13/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:05:38 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[FAQ]]></category>
		<category><![CDATA[Station]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=155</guid>
		<description><![CDATA[Issues related to the non-co-location of different observing systems are currently being studied and depend critically on the horizontal distance as well as the local geography. Another important aspect is whether a non co-located routine sounding site is able to modify or amend current routine observations. Additional ground checks or more extensive meta data collection [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=155&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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		<title>FAQ-14: Who can help in putting data into a GRUAN format?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-14/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-14/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:04:03 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[Data format]]></category>
		<category><![CDATA[FAQ]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=157</guid>
		<description><![CDATA[GRUAN stations can submit their data in their native format. These data should include raw data, complete meta data as well as processed data. The GRUAN archive will add uncertainty estimations in cooperation with the station and bring all data into a standard format. The lead centre can coordinate support for each site in data [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=157&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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			<media:title type="html">Holger Vömel</media:title>
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		<title>FAQ-15: Where does the funding for GRUAN come from?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-15/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-15/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:02:20 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[FAQ]]></category>
		<category><![CDATA[Funding]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=159</guid>
		<description><![CDATA[At this point no strong financial support exists to fund observational programs under GRUAN. Strong and coordinated efforts will be required to secure long term secure funding for GRUAN. This issue will need to be addressed. Posted in FAQ, Funding<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=159&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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		<title>FAQ-16: Does GRUAN require real or near real time data dissemination?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-16-does-gruan-require-real-or-near-real-time-data-dissemination/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-16-does-gruan-require-real-or-near-real-time-data-dissemination/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:01:58 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[Data dissemination]]></category>
		<category><![CDATA[FAQ]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=161</guid>
		<description><![CDATA[Real time and near real time delivery of observations is currently not a priority for GRUAN. The requirements for GRUAN are to provide upper reference observations of climate research, for the validation of globally comprehensive observations systems and for the complete characterisation of the atmospheric column. These requirements will require additional processing, which is not [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=161&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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		<title>FAQ-17: What are best practices at a GRUAN site?</title>
		<link>http://gruan.wordpress.com/2009/07/30/faq-17/</link>
		<comments>http://gruan.wordpress.com/2009/07/30/faq-17/#comments</comments>
		<pubDate>Thu, 30 Jul 2009 12:00:48 +0000</pubDate>
		<dc:creator>Holger Vömel</dc:creator>
				<category><![CDATA[FAQ]]></category>
		<category><![CDATA[Measuring]]></category>
		<category><![CDATA[Station]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=163</guid>
		<description><![CDATA[Best practices at a GRUAN site aim at obtaining long term climate reference observations and reference observations for validation of other sensors. This requires operational best practices as well as best practices for instruments and data analysis. Establishing measurement uncertainties will be an important element of best practices. This implies that any instrument that is [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=163&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>0</slash:comments>
	
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		<title>GRUAN operations: Suggestion to do regular parallel ascents</title>
		<link>http://gruan.wordpress.com/2009/06/22/gruan-operations/</link>
		<comments>http://gruan.wordpress.com/2009/06/22/gruan-operations/#comments</comments>
		<pubDate>Mon, 22 Jun 2009 15:22:37 +0000</pubDate>
		<dc:creator>Franz Immler</dc:creator>
				<category><![CDATA[General]]></category>
		<category><![CDATA[Instrument]]></category>
		<category><![CDATA[Measuring]]></category>
		<category><![CDATA[Radiosonde]]></category>
		<category><![CDATA[Reference]]></category>
		<category><![CDATA[Temperature]]></category>
		<category><![CDATA[Uncertainty]]></category>
		<category><![CDATA[Water vapour]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=65</guid>
		<description><![CDATA[Suggetion for a weekly parallel launch of two types of production radiosondes<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=65&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>2</slash:comments>
	
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		<title>Discussion on GCOS-112 specifications</title>
		<link>http://gruan.wordpress.com/2009/05/07/gcos-112-requirements/</link>
		<comments>http://gruan.wordpress.com/2009/05/07/gcos-112-requirements/#comments</comments>
		<pubDate>Thu, 07 May 2009 10:09:36 +0000</pubDate>
		<dc:creator>Franz Immler</dc:creator>
				<category><![CDATA[Reference]]></category>

		<guid isPermaLink="false">http://gruan.wordpress.com/?p=35</guid>
		<description><![CDATA[Defining GRUAN specifications<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=gruan.wordpress.com&amp;blog=7640009&amp;post=35&amp;subd=gruan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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		<slash:comments>7</slash:comments>
	
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