TY - JOUR A1 - Gupta, P. A1 - Christopher, S. A. T1 - Seven year particulate matter air quality assessment from surface and satellite measurements JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 8 IS - 1 SP - 327 EP - 365 Y1 - 2008/01/09 PB - Copernicus Publications SN - 1680-7367 UR - http://www.atmos-chem-phys-discuss.net/8/327/2008/ L1 - http://www.atmos-chem-phys-discuss.net/8/327/2008/acpd-8-327-2008.pdf ER -