Limitation of using Angstrom exponent for source apportionment of black carbon in complex environments - A case study from the North West Indo- Gangetic plain

Saryu Garg1, Baerbel Sinha1, Vinayak Sinha2, Prafulla Chandra1, Roland Sarda Esteve3 and Valerie Gros4, (1)Indian Institute of Science Education and Research Mohali, Department of Earth and Environmental Sciences, SAS Nagar, India, (2)Indian Institute of Science Education and Research Mohali, Mohali, India, (3)Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (4)UMR CNRS-CEA-UVSQ, IPSL, Univ. Paris-Saclay, Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France