气候变化领域集成服务门户(CCPortal): On the Emergence of Human Influence on Surface Air Temperature Changes Over India

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DOI	10.1029/2020JD032911
	On the Emergence of Human Influence on Surface Air Temperature Changes Over India
	Dileepkumar R.; AchutaRao K.; J. W. Bonfils C.; Arulalan T.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:18
英文摘要	Human activities in terms of greenhouse gas (GHG) emissions and aerosols resulting from the combustion of fossil fuels have been shown to have affected the temperature of the Earth on global and continental scales. The surface air temperature (TAS) over India has also been observed to be increasing over the last 100 years. Understanding the underlying causes of regional climate change over India can help in developing appropriate mitigation and adaptation strategies. Differentiating signals of externally forced climate changes from the noise of natural internal variability generally becomes more difficult as spatial scale reduces. Therefore detecting and attributing the influence of external forcings such as GHGs and aerosols is harder at local and regional scales. In this study, we applied a detection and attribution (D&A) method to study annual and seasonal mean TAS over the Indian region. We found that the observed warming over India from 1906 to 2005 cannot be explained by natural climate variability alone. We found that the warming is largely driven by the increase in GHGs, and partially offset by regional anthropogenic emissions of aerosols. These results were confirmed for the shorter 1956–2005 period, but results were sensitive to the choice of observational data set. The changes cannot be explained by internal climate variability or natural external forcings alone, but are compatible with the responses to combined anthropogenic GHG and aerosol forcings. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	anthropogenic; detection-attribution; fingerprint; regional climate change
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236986
作者单位	Department of Mathematics, KSMDB College, Kollam, Kerala, India; Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, New Delhi, Delhi, India; Program for Climate Model Diagnosis and Intercomparison (PCMDI), Lawrence Livermore National Laboratory, Livermore, CA, United States; India Meteorological Department, Ministry of Earth Sciences, Government of India, New Delhi, Delhi, India
推荐引用方式 GB/T 7714	Dileepkumar R.,AchutaRao K.,J. W. Bonfils C.,et al. On the Emergence of Human Influence on Surface Air Temperature Changes Over India[J],2021,126(18).
APA	Dileepkumar R.,AchutaRao K.,J. W. Bonfils C.,&Arulalan T..(2021).On the Emergence of Human Influence on Surface Air Temperature Changes Over India.Journal of Geophysical Research: Atmospheres,126(18).
MLA	Dileepkumar R.,et al."On the Emergence of Human Influence on Surface Air Temperature Changes Over India".Journal of Geophysical Research: Atmospheres 126.18(2021).