Level 1 data set of FY-3A Solar Backscatter Ultraviolet Sounder(SBUS):
L1 data set contains all SBUS sensor data including atmospheric radiance and solar flux for 12 spectral bands and for 160nm-400nm with step length of 0.21nm,it also contains in-flight calibration data for solar flux and geo location data.
Level 1 data set of FY-3A Solar Backscatter Ultraviolet Sounder(SBUS):
The Solar Backscatter Ultraviolet Sounder (SBUS) instrument onboard the FY-3 polar orbiting satellite measures the ultraviolet sunlight scattered by the Earth's atmosphere at 12 spectral bands ranging from 252 nm to 340 nm with 1.1nm average bandpass. Measurements at the shortest eight wavelengths are used to estimate ozone vertical profiles by using a maximum likelihood retrieval algorithm. Measurements at the longer four wavelengths, which penetrate into the lower atmosphere, are used to obtain estimates of total column ozone. Total ozone is calculated by using the ratio of two wavelengths of backscattered ultraviolet light, where one is strongly absorbed by ozone while the other is absorbed very little. The SBUS also measures the solar flux ranging from 160nm to 400nm with 0.21nm step length in sweep mode, and solar flux at 12 discrete bands.
