MODIS aerosol product Collection 005（C005） is an upgrade of C004

and is introduced in detail in this paper.Through fitting with AERONET ground observation aerosol optical thickness（AOT）

MODIS aerosol C004 and C005 products of TERRA and AQUA are compared and evaluated to analyze their applicability in the north of China at Beijing and Yulin sites.We match AERONET ground-based data with MODIS aerosol product by band interpolation and temporal-spatial matching

then compare and evaluate them by linear fitting.We conceive a scale of temporal-spatial matching in the north of China considering the local aerosol movement velocity of given sites.The results show that:（1） C005 product algorithm does not improve the accuracy of AOT at Beijing site

and the accuracy drops when AOT< 0.8;both C004 and C005 products do not have a significant application at Beijing site

but the C004 performs better than C005 products.（2） At Yulin site

TERRA-MODIS C004 product meets the demand

and the accuracy of AQUA-MODIS C004 product decreases.Compared with the C004 product

the accuracy of the C005 product improves greatly

and correlation coefficients between AOTs of three bands（470nm

550nm

660nm） and the AERONET ground observation data are all higher than 0.9.It could be concluded that the method of the surface reflectance determination used in the new algorithm is feasible for dark dense vegetation

but is not suitable for the bright surface.