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 ‘GRUAN for satellite product validation’, so forgive me my ignorance):
- Am I correct in assuming that NPROVS is a tool which allows simultaneous analysis of profiles derived from different measurement techniques, and you have recently incorporated GRUAN data into that environment?
- What, if any, relationship exists between NPROVS and SASBE? I understand from Tobin et al. (JGR, 2006) the methodology of validating AIRS profiles using profiles obtained at ARM sites, where the term ‘site atmospheric state best estimate’ has been coined.
- How do the existing validation methods for AIRS profiles compare with the work published recently by Calbet et al. (AMT, 2011) on intercomparing IASI with radiosonde soundings at Sodankylä (Finland)?