Abstract
Climate change due to increasing concentrations of greenhouse gases (GHGs) has emerged as a serious global environmental issue. An attempt has been made to assess the GHG emissions in two geographical regions of India i.e. the Northeast Region (NER) and the West coast Region (WCR) during the period of 1980-2005. The analysis reveals an increasing trend in GHG emissions from the study regions except for CH 4, which shows a decreasing trend in Goa and Kerala. As far as state wise GHG emissions are concerned; Assam ranks first in CO 2 , CH 4 and N 2 O emissions from the NER. Konkan ranks first in CO 2 and CH 4 emissions, while Kerala ranks first in N 2 O emissions representing the WCR. Analysis of the compounded annual growth rate reveals higher for the WCR in CO 2 and CH 4 emissions except N 2 O where the NER remains the highest. In order to find the association between GHG emissions and climatic response, the mean air temperature for 26 stations in both regions were subjected to trend analysis. The findings show warming trends in the mean air temperature over a majority of the stations indicating a possible role by increased GHGs. Further, the analysis reveals a positive correlation of population and GHG emissions significantly at 99% for both the regions. DOI: http://dx.doi.org/10.5755/j01.erem.63.1.2739
Highlights
Climate change due to increasing concentrations of greenhouse gases (GHGs) in the atmosphere has emerged as a serious global environmental issue and poses a threat and challenge to mankind
In the earlier scientific studies trends were not discussed, in this paper an attempt has been made to examine the trend in GHG emissions and climate response in terms of a climatic parameter. This has been achieved by the following objectives: to assess the trends in GHG emissions from the main sources on annual scale; to correlate the population growth with that of the GHG emissions ; to evaluate the GHG emissions and climate response using a climatic parameter
The above Table indicates that Compound annual growth rate (CAGR) of the total CO2 emissions from different states in Northeast Region (NER) depicts the highest rate of 10.9% increase at Sikkim, while the lowest is observed in Assam (2.95%)
Summary
Climate change due to increasing concentrations of greenhouse gases (GHGs) in the atmosphere has emerged as a serious global environmental issue and poses a threat and challenge to mankind. The impact of human activities on climatic system is indisputable These socio-economic activities are related to the development which is a key to the living being of global population. Garg et al (2001a) reported the emission growth of 6.3%, 1.2%, and 3.3% from CO2, CH4 and N2O, respectively, in India during the period of 1990 - 1995. The continued increase in the concentration of GHGs in the atmosphere will lead to climate change affecting humanity, flora and fauna. These two studied regions have huge coal, oil and natural gas reserves for thermal and cement plants generation, followed by a growth in number of vehicles, too. This has been achieved by the following objectives: to assess the trends in GHG emissions from the main sources on annual scale; to correlate the population growth with that of the GHG emissions ; to evaluate the GHG emissions and climate response using a climatic parameter
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