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The global monitoring of the greenhouse gases is necessary to handle the global warming issue and the monitoring from space is very useful for the global monitoring. In order to realize this and repeatable monitoring, the GOSAT program was started. The mission of the GOSAT is to observe CO2 and CH4 column density with relative accuracy of 1 % for CO2 and 2(More)
to estimate changes in the radiometric response of both sensors. While the 2009 campaign (VCC 2009) indicated significant initial degradation in the sensors compared to the prelaunch values, the results presented here show that the stability of the sensors has improved with time. The largest changes were seen in the 0.76 μm oxygen A-band for TANSO-FTS and(More)
Spatial and temporal variability of atmospheric water vapor (H 2 O) is extremely high, and therefore it is difficult to accurately evaluate the measurement precision of H 2 O data by a simple comparison between the data derived from two different instruments. We determined the measurement precisions of column-averaged dry-air mole fractions of H 2 O (XH 2(More)
Northern Japan is a tectonically active area, with the presence of several volcanoes, and with frequent earthquakes among which the destructive M w = 8.9–9.0 Tohoku-oki occurred on 11 March 2011. Tectonic activity leaves an imprint on the crustal structures, on both the upper and the lower layers. To investigate the crust in northern Japan, we construct a(More)
Greenhouse gases Observing SATellite (GOSAT) is a Japanese MOE/NIES/JAXA joint program to observe greenhouse gases, such as CO 2 and CH 4 , from space. The GOSAT will be launched in 2008. The GOSAT carries a Fourier transform spectrometer and a push broom imager. The GOSAT development is going on in phase-C/D and characterized the sensor performance in(More)
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