Evaluation of AIRS, MODIS, and HIRS 11 micron brightness temperature difference changes from 2002 through 2006
In an effort to validate the accuracy and stability of AIRS data at low scene temperatures (200-250 K range), we evaluated brightness temperatures at 11 microns with Aqua MODIS band 31 and HIRS/3 channel 8 for Antarctic granules between September 2002 and May 2006. We found excellent agreement with...
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ftnasajpl:oai:trs.jpl.nasa.gov:2014/39856 2023-05-15T13:31:50+02:00 Evaluation of AIRS, MODIS, and HIRS 11 micron brightness temperature difference changes from 2002 through 2006 Broberg, Steven E. Aumann, Hartmut H. Gregorich, David T. Xiong, X. 2006-10-25T21:59:04Z 280427 bytes application/pdf http://hdl.handle.net/2014/39856 en_US eng Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2006. SPIE Earth Observing Systems XI, San Diego, August 14, 2006. 06-2063 http://hdl.handle.net/2014/39856 Atmospheric Infrared Sounder (AIRS) MODIS HIRS spectrometers radiometers validation Preprint 2006 ftnasajpl 2021-12-23T13:18:25Z In an effort to validate the accuracy and stability of AIRS data at low scene temperatures (200-250 K range), we evaluated brightness temperatures at 11 microns with Aqua MODIS band 31 and HIRS/3 channel 8 for Antarctic granules between September 2002 and May 2006. We found excellent agreement with MODIS (at the 0.2 K level) over the full emperature range in data from early in the Aqua mission. However, in more recent data, starting in April 2005, we found a scene temperature dependence in MODIS-AIRS brightness temperature differences, with a discrepancy of 1- 1.5 K at 200 K. The comparison between AIRS and HIRS/3 (channel 8) on NOAA 16 for the same time period yields excellent agreement. The cause and time dependence of the disagreement with MODIS is under evaluation, but the change was coincident with a change in the MODIS production software from collection 4 to 5. NASA/JPL Report Antarc* Antarctic JPL Technical Report Server Antarctic |
institution |
Open Polar |
collection |
JPL Technical Report Server |
op_collection_id |
ftnasajpl |
language |
English |
topic |
Atmospheric Infrared Sounder (AIRS) MODIS HIRS spectrometers radiometers validation |
spellingShingle |
Atmospheric Infrared Sounder (AIRS) MODIS HIRS spectrometers radiometers validation Broberg, Steven E. Aumann, Hartmut H. Gregorich, David T. Xiong, X. Evaluation of AIRS, MODIS, and HIRS 11 micron brightness temperature difference changes from 2002 through 2006 |
topic_facet |
Atmospheric Infrared Sounder (AIRS) MODIS HIRS spectrometers radiometers validation |
description |
In an effort to validate the accuracy and stability of AIRS data at low scene temperatures (200-250 K range), we evaluated brightness temperatures at 11 microns with Aqua MODIS band 31 and HIRS/3 channel 8 for Antarctic granules between September 2002 and May 2006. We found excellent agreement with MODIS (at the 0.2 K level) over the full emperature range in data from early in the Aqua mission. However, in more recent data, starting in April 2005, we found a scene temperature dependence in MODIS-AIRS brightness temperature differences, with a discrepancy of 1- 1.5 K at 200 K. The comparison between AIRS and HIRS/3 (channel 8) on NOAA 16 for the same time period yields excellent agreement. The cause and time dependence of the disagreement with MODIS is under evaluation, but the change was coincident with a change in the MODIS production software from collection 4 to 5. NASA/JPL |
format |
Report |
author |
Broberg, Steven E. Aumann, Hartmut H. Gregorich, David T. Xiong, X. |
author_facet |
Broberg, Steven E. Aumann, Hartmut H. Gregorich, David T. Xiong, X. |
author_sort |
Broberg, Steven E. |
title |
Evaluation of AIRS, MODIS, and HIRS 11 micron brightness temperature difference changes from 2002 through 2006 |
title_short |
Evaluation of AIRS, MODIS, and HIRS 11 micron brightness temperature difference changes from 2002 through 2006 |
title_full |
Evaluation of AIRS, MODIS, and HIRS 11 micron brightness temperature difference changes from 2002 through 2006 |
title_fullStr |
Evaluation of AIRS, MODIS, and HIRS 11 micron brightness temperature difference changes from 2002 through 2006 |
title_full_unstemmed |
Evaluation of AIRS, MODIS, and HIRS 11 micron brightness temperature difference changes from 2002 through 2006 |
title_sort |
evaluation of airs, modis, and hirs 11 micron brightness temperature difference changes from 2002 through 2006 |
publisher |
Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2006. |
publishDate |
2006 |
url |
http://hdl.handle.net/2014/39856 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
SPIE Earth Observing Systems XI, San Diego, August 14, 2006. 06-2063 http://hdl.handle.net/2014/39856 |
_version_ |
1766021246492868608 |