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DOI	10.2166/wcc.2016.230
	Spatio-temporal variability of temperature and potential evapotranspiration over india
	Sonali P.; Nagesh Kumar D.
发表日期	2016
ISSN	20402244
起始页码	810
结束页码	822
卷号	7 期号:4
英文摘要	Worldwide, major changes in the climate are expected due to global warming, which leads to temperature variations. To assess the climate change impact on the hydrological cycle, a spatiotemporal change detection study of potential evapotranspiration (PET) along with maximum and minimum temperatures (Tmax and Tmin) over India have been performed for the second half of the 20th century (1950–2005) both at monthly and seasonal scale. From the observed monthly climatology of PET over India, high values of PET are envisioned during the months of March, April, May and June. Temperature is one of the significant factors in explaining changes in PET. Hence seasonal correlations of PET with Tmax and Tmin were analyzed using Spearman rank correlation. Correlation of PET with Tmax was found to be higher compared to that with Tmin. Seasonal variability of trend at each grid point over India was studied for Tmax, Tmin and PET separately. Trend Free Pre-Whitening and Modified Mann Kendall approaches, which consider the effect of serial correlation, were employed for the trend detection analysis. A significant trend was observed in Tmin compared to Tmax and PET. Significant upward trends in Tmax, Tmin and PET were observed over most of the grid points in the interior peninsular region. © IWA Publishing 2016.
英文关键词	Correlation; Non-parametric approaches; Potential evapotranspiration; Seasonal temperature; Trend detection
语种	英语
scopus关键词	Correlation methods; Global warming; Maximum and minimum temperatures; Nonparametric approaches; Potential evapotranspiration; Seasonal temperature; Spatio-temporal changes; Spatiotemporal variability; Spearman rank correlation; Trend detection; Evapotranspiration; air temperature; climate change; correlation; potential evapotranspiration; seasonal variation; temporal variation; trend analysis; India
来源期刊	Journal of Water and Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148137
作者单位	Department of Civil Engineering, Indian Institute of Science, Bangalore, 560012, India; Divecha Centre for Climate Change, Indian Institute of Science, Bangalore, 560012, India; Department of Civil Engineering, Indian Institute of Science, Bangalore, 560012, India; Centre for Earth Sciences, Indian Institute of Science, Bangalore, 560012, India
推荐引用方式 GB/T 7714	Sonali P.,Nagesh Kumar D.. Spatio-temporal variability of temperature and potential evapotranspiration over india[J],2016,7(4).
APA	Sonali P.,&Nagesh Kumar D..(2016).Spatio-temporal variability of temperature and potential evapotranspiration over india.Journal of Water and Climate Change,7(4).
MLA	Sonali P.,et al."Spatio-temporal variability of temperature and potential evapotranspiration over india".Journal of Water and Climate Change 7.4(2016).