Aparajeo Chattopadhyay

Research Scientist I

Chemical Processes & Instrument Development


NOAA Chemical Sciences Laboratory
325 Broadway, R/CSL5
Boulder, CO 80305 USA



Ph.D. Physical Chemistry, Indian Association for the Cultivation of Science, India (degree awarded by University of Calcutta, Advisor: Professor Tapas Chakraborty), 2018.
M.Sc. Chemistry (Special in Physical Chemistry), University of Calcutta, India, 2011.


Atmospheric Chemistry, Photochemistry, Gas Kinetics.

Current Topics

Atmospheric chemistry of biomass burning related compounds as part of the laboratory component of NOAA's FIREX mission. The studies include measurement of the rate coefficients of the reactions with OH radical, Cl atom and recording the photolysis quantum yields, UV absorption cross sections to estimate the atmospheric lifetime of the concerned chemical compounds. Identification and measurement of yields of the reaction products are carried out for in-depth understanding of the reaction mechanism

Measurement of atmospheric lifetime, infrared spectra and Global Warming Potential (GWP) of perfluorinated compounds to assess their suitability as replacements of CFCs and Halon compounds.

Cooperative Institute for Research in Environmental Sciences National Oceanic and Atmospheric Administration

last modified: August 29, 2019