1 / 14

CrIMSS Temperature Validation

CrIMSS Temperature Validation. CrIMSS minus COSMIC AIRS minus COSMIC Day 122 – 128 (1-7 May 2012). Robert Knuteson, Michelle Feltz , Hank Revercomb , and Dave Tobin University of Wisconsin-Madison CIMSS CrIMSS Product Review 12 June 2012. TOPICS. COSMIC GPS RO

janna
Download Presentation

CrIMSS Temperature Validation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CrIMSS Temperature Validation CrIMSS minus COSMIC AIRS minus COSMIC Day 122 – 128 (1-7 May 2012) Robert Knuteson, Michelle Feltz, Hank Revercomb, and Dave Tobin University of Wisconsin-Madison CIMSS CrIMSS Product Review 12 June 2012

  2. TOPICS • COSMIC GPS RO • Example of CrIMSS product maps • Preliminary AVTP Cal/Val using COSMIC & AIRS • Recommendations

  3. Matchups were found between COSMIC and CrIMSS retrievals of temperature (collocated and within 1 hour). The same matchup software was used with AIRS and COSMIC. The COSMIC data is used a common reference to compare CrIMSS and AIRS retrievals on a daily basis. COSMIC Temperature Profile One Day of COSMIC Profiles http://www.cosmic.ucar.edu/launch/GPS_RO_cartoon.jpg 60 Altitude (km) Longitude Latitude 0

  4. CrIMSS Temperature Level : 100 mb(23 April 2012 Day 114) 240 210 180 • This figure only plots the granules which are collocated with a GPS RO observation. • CrIMSS temperatures appear to be qualitatively reasonable. • Preliminary quantitative evaluation of the AVTP product made using COSMIC GPS RO and AIRS L2 science team products (Version 5).

  5. CrIMSS Profile Cloudiness Flag 2-Cloudy 1-PartlyCloudy 0-Clear • The following analysis includes all cloud conditions.

  6. CrIMSS Profile Overall Data Quality Flag (QF5) 3-Poor 2-MW only 1-IR only 0-GoodMW+IR • This analysis excludes Poor (QF5 = 3) cases but includes all other cases. The result is dominated by MW only retrievals.

  7. Number of Samples A one week periodwas selected forquantitativecomparison withAIRS data usingCOSMIC GPS RO profiles as a common reference. 1-7 May 2012 (Day 122-128) CrIMSS has fewervalid matchupswith COSMIC athigh latitudes dueto the large numberof “poor” qualityCrIMSS retrievalsat those latitudes. AIRS - COSMIC CrIMSS - COSMIC

  8. 1-7 May 2012 (Day 122-128) Global 90S - 90N Bias RMS AIRS - COSMIC Bias RMS CrIMSS - COSMIC

  9. 1-7 May 2012 (Day 122-128) Arctic 90N - 60N Bias RMS AIRS - COSMIC Bias RMS CrIMSS - COSMIC

  10. 1-7 May 2012 (Day 122-128) Northern Midlatitudes 60N - 30N Bias RMS AIRS - COSMIC Bias RMS CrIMSS - COSMIC

  11. 1-7 May 2012 (Day 122-128) Tropics 30N – 30S Bias RMS AIRS - COSMIC Bias RMS CrIMSS - COSMIC

  12. 1-7 May 2012 (Day 122-128) Southern Midlatitudes 30S – 60S Bias RMS AIRS - COSMIC Bias RMS CrIMSS - COSMIC

  13. 1-7 May 2012 (Day 122-128) Antarctica 60S – 90S Bias RMS AIRS - COSMIC Bias RMS CrIMSS - COSMIC

  14. Conclusions/Recommendations • The CrIMSS data product file has been produced consistently since April 2, 2012 using ATMS data and CrIS (limited). • The product files are readable and appear to be filled with useable values. • We recommend that the CrIMSS data product be declared ‘Beta’ status.Comments: • The CrIMSS AVTP (Temperature) profile is showing degraded performance relative to AIRS for data processed in May 2012. • This is believed to be due to the small number of CrIS spectra which are successfully included in the current CrIMSS product retrieval. • Use of the COSMIC RO profiles as a common reference will provide a useful means of monitoring CrIMSS and AIRS relative EDR performance.

More Related