The paper addresses on the devastating episode (17-18 June 2013) at Kedarnath (Uttrakhand, India). The disaster caused huge loss of lives and physical/material wealth. To understand this catastrophic event, rainfall/convective data and associated climate meteorological parameters are investigated to understand the causes of disaster. The cause of disaster seems to be the heavy and continuous rainfall associated with snow melting and over flooding/collapse of the Chorabari Lake, located upstream.

The present study deals with the quantitative effect of vehicular emission on ambient air quality during May, 2006 in urban area of Lucknow city. In this study, SPM, RSPM, SO2, NOx and 7 trace metals associated with RSPM were estimated at 10 representative locations in urban area and one village area for control. Beside this, air quality index (AQI), health effects of different metals and mortality were assessed.

The elevated concentration of Respirable Suspended Particulate Matter (RSPM, PM10) in the ambient air is a major cause of health problem and urban people are affected at risk on exposure.