NISTAR: Continuous Total and Short Wave Measurements of the Full Sunlit Earth Disk from L1
Abstract
The NIST Advanced Radiometer (NISTAR) is designed to take advantage of the unique view point onboard the Deep Space Climate Observatory (DSCOVR) to help quantify the Earth's radiation budget by measuring the solar reflected and thermal emitted radiation from the planet. NISTAR is positioned near the first Lagrangian point between the Earth and the Sun, providing the first measurement of the continuous irradiance from the entire sunlit face of Earth. NISTAR contains four detectors: three active cavity radiometers and a silicon photodiode. Optical filters allow irradiance measurements in three spectral bands corresponding to the total channel (reflected and emitted), the solar reflected channel, and the near-IR solar reflected channel. The photodiode serves as a high signal to noise detector, short time constant detector to aid in the characterization of the cavity detectors. The instrument provides data on the daily and seasonal variability in the radiation balance from the planet and over time can illustrate any long term changes due to human or natural causes.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2016
- Bibcode:
- 2016AGUFM.A21K..01L
- Keywords:
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- 0321 Cloud/radiation interaction;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 3311 Clouds and aerosols;
- ATMOSPHERIC PROCESSESDE: 3359 Radiative processes;
- ATMOSPHERIC PROCESSESDE: 3360 Remote sensing;
- ATMOSPHERIC PROCESSES