Urban aerosol monitoring over Ning-bo from HJ-1

There are four CCD cameras with spatial resolution of 30 m in Environment Satellite 1 (HJ-1), the new satellite developed by China. In the paper, deep blue algorithm for CCD/HJ-1 is applied to Ning-bo. Based on the database of surface reflectance from MODerate-resolution Imaging Spectroradiometer (MODIS) spectral reflectance product and look-up table (LUT), aerosol optical depth (AOD) over cloud-free land pixel is retrieved from apparent reflectance in the first band of CCD/HJ-1. AODs over Ning-bo area are retrieved from January to September in 2011, and the results are validated by ground-based measurements of CE318 in the center of Ning-bo city. The validation shows that the retrieved AODs are larger than that of ground-based measurements, but correlation coefficient (R) is greater than 0.7. Further improvements of overestimated AODs is the focus of our future research.