气候变化领域集成服务门户(CCPortal): Seasonality of Taylor’s law of fluctuation scaling in all-India daily rainfall

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DOI	10.1038/s41612-019-0104-6
	Seasonality of Taylor’s law of fluctuation scaling in all-India daily rainfall
	Tippett M.K.; Cohen J.E.
发表日期	2020
ISSN	23973722
卷号	3 期号:1
英文摘要	Here we show that the variance over time of all-India daily rainfall (AIR) can be related to the mean over time of AIR by a seasonally varying power law. Outside of the peak monsoon months of July and August, AIR variance increases in proportion to a positive power of mean daily rainfall. During July and August, monthly averages of AIR show little association with the corresponding variances. This power-law relationship of temporal variance to temporal mean is known in biological sciences as Taylor’s law (TL) and in physical sciences as fluctuation scaling. We explain the seasonal variation in TL qualitatively by independent and identically distributed random sampling. Accounting for day-to-day correlation in AIR is sufficient to match quantitatively the observed power-law behavior. Our findings provide a quantitative month-specific assessment of the variability of AIR that could prove useful for the design of crop insurance and social safety nets for the large fraction of the population of the Indian subcontinent that depends on rainfed agriculture. © 2020, The Author(s).
语种	英语
scopus关键词	monsoon; rainfall; seasonal variation; seasonality; India
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178051
作者单位	Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY 10027, United States; Laboratory of Populations, Rockefeller University, New York, NY 10065, United States; Earth Institute and Department of Statistics, Columbia University, New York, NY 10027, United States; Department of Statistics, University of Chicago, Chicago, IL 60637, United States
推荐引用方式 GB/T 7714	Tippett M.K.,Cohen J.E.. Seasonality of Taylor’s law of fluctuation scaling in all-India daily rainfall[J],2020,3(1).
APA	Tippett M.K.,&Cohen J.E..(2020).Seasonality of Taylor’s law of fluctuation scaling in all-India daily rainfall.npj Climate and Atmospheric Science,3(1).
MLA	Tippett M.K.,et al."Seasonality of Taylor’s law of fluctuation scaling in all-India daily rainfall".npj Climate and Atmospheric Science 3.1(2020).