The Global Earth Observation System of Systems ... - PMOD/WRC
The Global Earth Observation System of Systems ... - PMOD/WRC
The Global Earth Observation System of Systems ... - PMOD/WRC
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GEOSS and Metrological Support for MeasuringM<br />
Radiometric<br />
Properties <strong>of</strong> Objects<br />
<strong>of</strong> <strong>Observation</strong>s<br />
Formulation <strong>of</strong> the problem - 2<br />
Within the wide area <strong>of</strong> GEOSS data application, the highest requirements for<br />
the long-term stability <strong>of</strong> the data and for the accuracy <strong>of</strong> optical sensors are<br />
imposed by climatology which needs time series extending over decades.<br />
Required accuracies and stabilities <strong>of</strong> satellite instruments<br />
No<br />
1<br />
2*<br />
3*<br />
4*<br />
5*<br />
6<br />
7<br />
8<br />
9<br />
Ozone<br />
Vegetation<br />
Surface albedo<br />
Ocean color<br />
Sea surface temperature<br />
Atmospheric temperature<br />
Water vapor<br />
Climate variable<br />
Total solar irradiance<br />
Cloud parameters<br />
* Requirements to radiance measurements<br />
Accuracy<br />
0.1 %<br />
1 %<br />
2 %<br />
5 %<br />
5 %<br />
0.1 K<br />
0.5 K<br />
1 K<br />
1 K<br />
[Satellite Instrument Calibration for Measuring <strong>Global</strong> Climate Change. C<br />
NISTIR 7047.<br />
US Department <strong>of</strong> Commerce. 2004. ]<br />
Stability<br />
(per decade)<br />
0.02 %<br />
0.1 %<br />
0.8 %<br />
1 %<br />
1 %<br />
0.01 K<br />
0.04 K<br />
0.03 K<br />
0.2 K<br />
10
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