4:30 PM - 4:45 PM
[ACG34-05] Vicarious calibration activities of ASTER Thermal Infrared Radiometer (TIR) for Earth environmental observation
Keywords:multispectral data, remote-sensing, ASTER, Earth observation satellite, vicarious calibration
In order to establish the ASTER data for high-accuracy applications, radiometric calibration and atmospheric correction are highly important. Since any optical sensor is expected to degrade in space, we need to monitor the performance of the sensor over time based on onboard and vicarious calibrations. One of vicarious calibration approaches characterizes instrument performance based on comparison with the data measured by field campaigns at homogeneous ground areas such as lake and desert sites. The field campaigns for ASTER took place at various test sites such as Railroad Valley Playa, Lunar Lake, and Alkali Lake in Nevada and water sites such as Lake Kasumigaura in Japan during about two decades.
On 30 August through 1 September 2018, as part of annual vicarious calibrations for ASTER Thermal Infrared Radiometer (TIR), we conducted the field campaigns at Railroad Valley playa and Alkali Lake in Nevada. We also made the vicarious calibration at Lone Mountain playa in Nevada, which is a new test site discovered during this campaign. In this presentation, we will report the activity of the 2018's field campaigns at Nevada, and discuss how important the radiometric calibration after launch is to Earth's science applications including assessment of global environmental change based on satellites.