James Roberts

Research Chemist

Chemical Processes & Instrument Development

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




Dr. Roberts has a long-standing interest in the organic chemistry of the atmosphere. He has worked on a variety of issues such as; the transport and chemistry of volatile organic compounds, the chemistry of organic nitrates and their contribution to the transport of atmospheric odd-nitrogen, the involvement of biogenic hydrocarbons in ozone and particle formation in the troposphere, the activation of chlorine by odd-nitrogen, and the atmospheric chemistry of acidic species.


PhD. Chemistry, University of Colorado, Boulder, 1983
B.S. Chemistry and Environmental Engineering, California Polytechnic University, San Luis Obispo, California, 1978


Chemical ionization mass spectrometry
Interfacial chemistry of halides
Measurement and chemistry of organic acids
Biomass burning
The use of unique atmospheric compounds to elucidate key atmospheric processes

Current Topics

Acylperoxynitrates [PANs: RC(O)OONO2]
Nitryl Chloride [ClNO2]
Molecular chlorine [Cl2]
Nitrous acid [HONO]
Isocyanic acid [HNCO]

National Oceanic and Atmospheric Administration

last modified: January 26, 2021