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A Study of Co2 and Related Trace Gases Using a Laser-Based Technique at an Urban Site in Western India


Affiliations
1 Physical Research Laboratory, Ahmedabad 380 009, India
 

Continuous measurements of surface-level carbon dioxide (CO2) along with its co-emitted carbon monoxide (CO) and methane (CH4) are being made at Ahmedabad using a laser-based cavity ring down spectrometer, which offers much longer path length for accurate and fast measurements of these species simultaneously. The average data during November 2013 show large variability in all the three species. These measurements also show significant diurnal variations with maximum in CO being relatively the shortest-lived species in this set of gases. The correlations and slopes among them have been used to identify potential emission sources.

Keywords

Cavity Ring Down Spectroscopy, Fossil Fuel, Greenhouse Gases, India, Vehicular Emissions.
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  • A Study of Co2 and Related Trace Gases Using a Laser-Based Technique at an Urban Site in Western India

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Authors

S. Lal
Physical Research Laboratory, Ahmedabad 380 009, India
N. Chandra
Physical Research Laboratory, Ahmedabad 380 009, India
S. Venkataramani
Physical Research Laboratory, Ahmedabad 380 009, India

Abstract


Continuous measurements of surface-level carbon dioxide (CO2) along with its co-emitted carbon monoxide (CO) and methane (CH4) are being made at Ahmedabad using a laser-based cavity ring down spectrometer, which offers much longer path length for accurate and fast measurements of these species simultaneously. The average data during November 2013 show large variability in all the three species. These measurements also show significant diurnal variations with maximum in CO being relatively the shortest-lived species in this set of gases. The correlations and slopes among them have been used to identify potential emission sources.

Keywords


Cavity Ring Down Spectroscopy, Fossil Fuel, Greenhouse Gases, India, Vehicular Emissions.

References





DOI: https://doi.org/10.18520/cs%2Fv109%2Fi11%2F2111-2116