Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/9570
Title: Variations in atmospheric Carbon Dioxide and its association with rainfall and vegetation over India
Authors: Tiwari YK
Revadekar JV
Ravi Kumar K
Keywords: Air mass;Annual cycle;Atmospheric carbon dioxide;Atmospheric CO;Cape Rama India;Climate variability;Correlation coefficient;Interannual variability;Maritime sites;Monsoon season;Negative correlation;Pre-monsoon;Summer monsoon;West coast;Wind patterns, Atmospheric chemistry;Atmospheric composition;Atmospheric thermodynamics;Climatology;Rain;Vegetation, Carbon dioxide, carbon dioxide;rain, air mass;annual cycle;annual variation;carbon dioxide;coastal zone;concentration (composition);correlation;rainfall;seasonal variation;vegetation index, article;atmosphere;concentration (parameters);growth rate;India;priority journal;seasonal variation;summer;surface property;vegetation;winter, India
Issue Date: 2013
Publisher: Atmospheric Environment
Elsevier
Source: Volume no: 68
Abstract: In this paper we have studied variability and growth rate of surface observed atmospheric Carbon Dioxide (CO2) concentrations over Cape Rama, west coast of India and its association with rainfall and vegetation over this region. Cape Rama is a maritime site which experiences a seasonal reversal wind pattern receiving air masses having marine (continental) signatures during summer (winter) monsoon season. This study reveals that summer monsoon (JJAS) precipitation and monthly values of atmospheric CO2 concentration during the season are well correlated. Negative correlations are seen with CO2 concentrations of concurrent months of the season as well as subsequent months. However the magnitudes of correlation coefficients are decreased till hot pre-monsoon season (MAM). Annual cycle and interannual variability show negative relationship between CO2 concentration and vegetation over the region. CO2 concentration shows increasing trend and NDVI shows decreasing trend. However, the magnitude of increasing trend of CO2 concentration is higher. Amplitude of decreasing phase of vegetation is higher than the amplitude of increasing phase. Though the results show certain link between CO2 and climate variability, further examination with dense and longer data may be needed to confirm the result.
URI: http://hdl.handle.net/123456789/9570
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