1 / 14

PROJECT 1 Cal/Val MODIS with S-HIS (AIRS) radiances

PROJECT 1 Cal/Val MODIS with S-HIS (AIRS) radiances. CAL-VAR-IO. Authors: Annamaria, Tiziana, Tiziano, Teo. MODIS / SHIS Comparisons A detailed comparison should account for: instrumental noise and scene variations Different spatial footprints

benita
Download Presentation

PROJECT 1 Cal/Val MODIS with S-HIS (AIRS) radiances

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. PROJECT 1 Cal/Val MODIS with S-HIS (AIRS) radiances CAL-VAR-IO Authors: Annamaria, Tiziana, Tiziano, Teo

  2. MODIS / SHIS Comparisons • A detailed comparison should account for: • instrumental noise and scene variations • Different spatial footprints • Different view angles (MODIS is near nadir, SHIS is ~±35deg from nadir) • Different observation altitudes (MODIS is 705km, SHIS is ~20km on ER2, ~14km on Proteus) • Different spectral response (MODIS has different channels with different bandwidth, SHIS Dn=~0.5 cm-1) and sampling

  3. X TORPEX 2003

  4. FOV MODIS FOV S-HIS • Average SHIS data within MODIS FOV(s) and compare

  5. Average SHIS data within MODIS FOV(s) & compare • We convolve high resolution data with the response functions of the selected MODIS bands • Ex. of response functions of MODIS CO2 bands

  6. MODISsim MODISobs S-HISsim S-HISobs • Compare Residuals from calculations: (obs-calc)SHIS to (obs-calc)MODIS • SHIS and MODIS calcs each done at correct altitudes, view angles, spectral resolution and sampling. • Monochromatic calcs done using same forward model,atmospheric state, and surface property inputs.

  7. MODISsim MODISobs S-HISsim S-HISobs • Difference Residuals: Spectral Resolutions made similar

  8. CONCLUSIONS: • MODIS-(S-HIS): • GOOD RESULTS IN THE WINDOW AND H2OVAP • EXPECTED DISAGREEMENTS IN THE CO2 AND O3 • MODIS-(S-HIS) RESIDUALS: • GOOD CORRECTION IN THE O3 BAND • SIMULATIONS WITH TOO MUCH WV AT HIGH LEVELS

More Related