Continuous observations of surface air concentration of carbon dioxide and methane at Maitri, Antarctica

A 23-month record of continuous hourly averaged carbon dioxide observations over the February 2002–January 2004 period and 16-month record of methane over the February 2003–June 2004 period for the Indian Research Station, Maitri (Antarctica) have been examined to reveal baseline values in the atmos...

Full description

Saved in:
Bibliographic Details
Published in:Current science (Bangalore) 2005-06, Vol.88 (12), p.1941-1948
Main Authors: Jain, S. L., Ghude, Sachin D., Kumar, Ashok, Arya, B. C., Kulkarni, P. S.
Format: Article
Language:English
Subjects:
Air sampling
Antarctic regions
Atmospheric methane
Atmospherics
Calibration
Carbon dioxide
Electric generators
Frequency distribution
Gases
Marine
Methane
RESEARCH COMMUNICATIONS
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A 23-month record of continuous hourly averaged carbon dioxide observations over the February 2002–January 2004 period and 16-month record of methane over the February 2003–June 2004 period for the Indian Research Station, Maitri (Antarctica) have been examined to reveal baseline values in the atmosphere. During the observational period, CO2 surface air concentration showed mean yearly value of 368.43 ppm in the year 2002 and 369.72 ppm in the year 2003, indicating an increase by 1.3 ppm. This corresponds to a growth rate of 0.35% per year. Mean CH4 concentration for a 16-month period has been observed to be 1.699 ppm, with standard error of ±0.0025. Unlike CO2, CH4 does not show any evidence for an increase during the observation period. In the present communication, the experimental set-up and results obtained are discussed.
ISSN:0011-3891