Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.a51c0108s&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #A51C-0108
Physics
[0394] Atmospheric Composition And Structure / Instruments And Techniques
Scientific paper
The Greenhouse Gases Observing Satellite (GOSAT) is a Japanese mission to monitor greenhouse gases such as CO2 and CH4 from space. The GOSAT carries the Fourier Transform Spectrometer (TANSO-FTS) and the Cloud and Aerosol Imager (TANSO-CAI). The FTS has 3 polarized SWIR narrow bands, which are 0.76, 1.6 and 2.0 microns and TIR wide band from 5.5 to 14.3 microns. The FTS observes globally with grid points of 10 km FOV by separate pointing. The CAI is carried 4 radiometers of 0.38, 0.67, 0.87, and 1.60 microns with high spatial resolution of 0.5-1.5 km and wide swath of 1000 km. The GOSAT observes the full moon for the radiometric calibration of the FTS SWIR bands and the CAI by the lunar calibration operation every year. Bottom of the satellite installed the sensors is oriented to the moon before moon rise of the satellite. The initial lunar calibration on orbit just after the launch was operated on March 11, and April 9, 2009. Calibration after one year from the launch was operated on April 28. The FTS observes the moon by 0.6 IFOV. The FTS carries a high-resolution monitoring camera for checking the observation target. The moon position in the FTS IFOV is confirmed by the camera image. The CAI observes the moon by 12 pixels of Band 1-3, by 4 pixels of Band 4. The CAI scans the moon in 2 reciprocations with constant scan speed. This presentation shows the initial results of sensitivity study using the GOSAT lunar observation in one year operation.
Hashiguchi Toshio
Higuchi R.
Kataoka F.
Kawakami Satoru
Shiomi Katsuhiko
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