The spectral model construction between MODIS SWIR and HJ-1 CCD blue channel and its application in aerosol retrieval

For the lacks of a shortwave infrared (SWIR) band, aerosol optical depth (AOD) retrieval by HJ-1 A/B CCD datasets is limited obviously. This article simulated the relationships of surface reflectance between HI-1 CCD blue band and MODIS SWIR. channel using typical object spectra from ASTER spectral library. A new surface reflectance determining model at HJ-1 CCD blue band was constructed by introducing MODIS SWIR. channel as support, and was used in HJ-1.A/B CCD aerosol optical depth retrieval. The validation using AERONET ground measurements indicated that the proposed aerosol retrieval method has preferable accuracy and stability.