The vicarious calibration techniques achieve to determine the radiometric spectral level and the sensor degradation.
This website focuses on the high spectral resolution GHGs sensors (such as GOSAT, OCO-2, TRPOMI, OCO-3, and GOSAT-2) radiometric calibration in Railroad Valley Desert Playa, NV, USA.
We have conducted an annual joint calibration and validation (calval) campaign in Railroad Valley from 2009.
This website provides a long term campaign data of surface reflectance, radio sonde, and airplane GHG data.
≪Past campaign for other satellite≫
ASTER , MISR, Landsat7 (ETM+) , EO-1, Terra/MODIS ,MERIS/ENVISAT, SNPP/VIIRS, etc.
NASA JPL : Surface reflectance measured by ASD field spectrometer.
JAXA : Temperature and Humidity profile measured with radio sonde.
NASA Ames : Alpha Jet Atmospheric eXperiment (AJAX)
JAXA: CO2 and CH4 total column density measured with ground-based portable FTS (EM27/SUN)
Railroad Valley monthly weather report