Wavelength Calibration for the SAGE III/ISS Instrument
Abstract
The SAGE III/ISS instrument was sent to orbit in February 2017. Equipped with a CCD spectrometer, the instrument scans the solar and lunar disks before/after and during occultation by the Earth's atmospheric limb, collecting irradiance data for a subset of 809 available spectral channels with center wavelengths between 280nm and 1040nm. Ongoing calibration activities utilize a reference solar irradiance spectrum to characterize the spectral resolution across the CCD and adjust the center wavelengths of each channel. An algorithm has been developed to identify small shifts in the center wavelengths from one occultation event to another. Looking at these small shifts over the course of several months reveals their dependence on the instrument's configuration and thermal environment.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.A31L3094M
- Keywords:
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- 3359 Radiative processes;
- ATMOSPHERIC PROCESSESDE: 3360 Remote sensing;
- ATMOSPHERIC PROCESSESDE: 0525 Data management;
- COMPUTATIONAL GEOPHYSICSDE: 0594 Instruments and techniques;
- COMPUTATIONAL GEOPHYSICS