1 / 8

Additional Output to CrIMSS EDR/IP

Additional Output to CrIMSS EDR/IP. Sung-Yung Lee, Evan Fishbein Sounder PEATE NASA-JPL/Caltech. Why do we need additional Output. To validate the EDR products and evaluate the performance of EDR . Need to study the brightness temperature residuals, both MW and IR

andres
Download Presentation

Additional Output to CrIMSS EDR/IP

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. Additional Output to CrIMSS EDR/IP Sung-Yung Lee, Evan Fishbein Sounder PEATE NASA-JPL/Caltech

  2. Why do we need additional Output • To validate the EDR products and evaluate the performance of EDR. • Need to study the brightness temperature residuals, both MW and IR • but EDR/IP files do not contain enough parameters to compute radiances from EDR/IP products. • We are required to produce EDR products unless it is precipitating • However CrIMSS EDR retrieves the cloud liquid water content, but does not write the products. • ATMS brightness temperature residual • There is a suspicion that the ATMS surface channels have large residual errors • the performance of ATMS scan bias tuning needs to be evaluated through the study of brightness temperature residuals. • Similarly, the performance of IR retrievals cannot be evaluated without analyzing brightness temperature residuals. • IR bidirectional reflectance is retrieved, but not written out • IR bidirectional reflectance is a very good indicator of missing cloud

  3. Output Parameters Requested All parameters are computed in CrIMSS EDR, but not written out

  4. Issue with Surface PressureDR 4923 Sung-Yung Lee Sounder PEATE, JPL

  5. Summary • OMPS submitted a DR concerning extremely high surface pressure • Surface Pressure is acquired from NCEP forecast with small correction to account for differences in surface elevation • Less important with half degree forecast • FORs with Psurf > 1100 occur daily • Mostly over northern part of South America (Giana Highlands?) • But northern Australia also has some FORs with high surface pressure ( Psurf > 1050 over land ) • Page 6 compares forecast surface pressure and surface pressure in EDR • Page 7 shows the effect of surface elevation in surface pressure 5

  6. Maps of Surface Elevation and Pressure 6 Surface Pressure in EDR Surface Pressure from Forecast

  7. Maps of Surface Elevation CrIMSS EDR GFS 7

  8. Scatter Diagram • ZsurfvsPsurf • They should have been highly anti-correlated 8

More Related