Solar Irradiance Monitor-II (SIM-II)
Description
SIM-II is an improved version of SIM-I. The FOV of radiometer is 2 degree instead of 13.3 degree with the new tracking system. The temperature control is improved better than 0.3℃.
FY-3C SIM-II has two absolute radiometers, one radiometer performs normal observation, the other one is observed 1 day in a month for degradation monitor.
FY-3E SIM-II has three absolute radiometers supported for an improving monitor on ageing. A new observation mode is designed with 2 minutes period which can capture solar irradiance on each orbit 11 times.
| Satellite | FY-3C , FY-3E , FY-3F | |
|---|---|---|
| Spectral coverage | 0.2～20μm | |
| Observability of irradiance | 0~1450Wm-2 | |
| Calibration accuracy | ≤0.1% | |
| Sensitivity | ≤0.05Wm-2 | |
| Observation interval | ≤8min | |
Data and Products
| Satellite | Instrument | Datasets |
|---|---|---|
| FY-3F | SIM-II | Search |
| FY-3E | SIM-II | Search |
| FY-3C | SIM-II | Search |
Calibration and Validation
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FY-3F SIM-II
FY-3C/E SIM-II