Fire episodes and air quality over India from January to June.

Ummed Saharan, CSIR-National Physical Laboratory, Dr. KS Krishnan Road, New Delhi, India, Delhi, India, Tuhin Kumar Mandal, Principal Scientist, Environmental Sciences and Biomedical Metrology Division, Delhi, India, Rajesh Kumar, National Center for Atmospheric Research, Research Applications Laboratory, Boulder, CO, United States and Shyam Lal, Physical Research Laboratory, Ahmedabad, India