Questions on Validating Atmospheric Profiles

2011-09-14

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  Read the rest of this entry »


Pre-launch procedures for RS92 soundings

2011-06-23

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 ground checks are made before launch in the way described in this document and that the meta-data are reported to the GRUAN lead centre.

Read the rest of this entry »


GRUAN manual open for discussion

2011-01-25

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.

Read the rest of this entry »


Meisei Temperature Reference (MTR) sonde

2010-08-27

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).

Read the rest of this entry »


First GATNDOR post-ICM2 conference call

2010-05-18

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 the next conference call.

Read the rest of this entry »


Reference guidelines are online for discussion

2010-04-20

The paper “A guide for upper-air reference measurements” by F. Immler, J. Dykema, T. Gardiner, D. N. Whiteman, P. W. Thorne, and H. Vömel went online on the interactive Journal “Atmospheric Measurement Techniques” where it is open for public discussion for eight weeks (link).

Read the rest of this entry »


Discussion on the co-location / coincidence issue

2009-11-11

The following paragraphs from an e-mail by John Dykema describes how co-location and coincidence could be formalized.  As an example, the measurements of a temperature profile by a sensor on a balloon and a profile retrieved from microwave radiometry are assumed.

Once we have two well-characterized sensors with rigorously assessed and validated uncertainties, then we can make robust recommendations on co-location.

Read the rest of this entry »