November 2019 onwards

Adjunct Professor, Centre of Excellence for Research on Clean Air (CERCA), Indian Institute of Technology-Delhi, Delhi, India

August 2018 onwards

Higher Administrative Grade Professor (HAG) Professor, Civil Engineering, IIT-Kanpur, Kanpur, India

June 2018 – May 2021

Head Department of Civil Engineering, IIT-Kanpur, Kanpur, India

Dec 2015

Visiting Professor, School of Civil Environmental Engineering, Georgia Institute of Technology, USA

Nov 2014-Oct 2017

Coordinator Centre for Environmental Science & Engneering, IIT Kanpur

Nov 2014 -Oct 2016

Adjunct Professor Department of Earth Sciences, IIT Kanpur

June-July 2014

Visiting Professor School of Civil and Environmental Engineering, Georgia Institute of Technology, USA

May – July 2012

Professor Laboratoire de Physique et Chimie de Environnement, University of Orleans, France.

April 2012 – July 2018

Professor Department of Civil Engineering, IIT Kanpur

Aug 2009 – July 2010

Senior Fellow, NASA Goddard Space Flight Center, Greenbelt, US.

Jan 2008 – Feb 2012

Associate Professor Department of Civil Engineering, IIT Kanpur

May – July 2006

Visiting Associate Professor Centre for Climate System Research The University of Tokyo, Japan

June 2004

Visiting Researcher NOAA Aeronomy Laboratory, Boulder, USA

July 2003 – Dec 2007


Assistant Professor Department of Civil Engineering and Environmental Engineering and Management Programme Indian Institute of Technology, Kanpur.

Jan 2002 – July 2003

Post-Doctoral Research Assistant, Atmospheric, Oceanic and Planetary Physics, Department of Physics, University of Oxford, UK.

Dec 2000-Dec 2001

Visiting Scientist, Environmental Assessment Division, Bhabha Atomic Research Centre, Mumbai, India.