气候变化领域集成服务门户(CCPortal): Assessing precipitation extremes (1981–2018) and deep convective activity (2002–2018) in the Amazon region with CHIRPS and AMSU data

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DOI	10.1007/s00382-021-05742-8
	Assessing precipitation extremes (1981–2018) and deep convective activity (2002–2018) in the Amazon region with CHIRPS and AMSU data
	Funatsu B.M.; Le Roux R.; Arvor D.; Espinoza J.C.; Claud C.; Ronchail J.; Michot V.; Dubreuil V.
发表日期	2021
ISSN	0930-7575
起始页码	545
结束页码	563
英文摘要	The frequency and spatial distributions of precipitation extremes (PEs) and deep convective clouds (DCC) across the Amazon region were assessed using satellite-derived data. For PEs, CHIRPS dataset for the period 1981–2018 were used to calculate a set of absolute, threshold, duration, and percentile-based threshold indices defined by the Expert Team on Climate Change Detection and Indices. DCC occurrence was assessed based on the Advanced Microwave Sounding Unit data for the period 2002–2018. In northern Amazon (north of 5 ∘S) PEs and DCC are more frequent (≥ 60 % frequency) during February–June. Averaged trends over these months have shown increase in daily rainfall above 20 mm of near 3 days over the 1981–2018 period, and an increase of 2 consecutive wet days (P ≥1mm) in the same period. South of 5 ∘S prevalence of PEs and DCC is largely observed during November–March (≥ 60 % frequency), whereas the longest persistence of dry days is observed during June–August. Though all PE trends point to an intensification of rainfall in November–March, only consecutive dry days in winter (JJA) and spring (SON) show significant trends, pointing to an increase of 7 days over the 38-yr winters. Rainfall extremes over the entire Amazon region were found to be moderate to strongly correlated with the mean vertically integrated moisture divergence, and in southern Amazon also to upper level divergence and upward vertical velocity. Increased frequency of DCC were found over the whole basin (∼18%yr-1), in contrast to decreased convective overshooting (up to ∼15.4%yr-1). © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Amazon; Climatology; Deep convective clouds; Precipitation extremes; Trends
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183500
作者单位	CNRS, Université de Nantes, UMR6554 LETG, Chemin de la Censive du Tertre, BP 81227, Nantes Cedex 3, 44312, France; CIRAD-Forêts et Sociétés, Montpellier, 34398, France; CNRS, Université Rennes 2, UMR6554 LETG COSTEL, Rennes, France; IGE Univ. Grenoble Alpes, IRD, CNRS UMR 5001/UR 252, Grenoble, France; Laboratoire de Métóorologie Dynamique, Sorbonne Université, École Normale Supérieure, IPSL Research University, École Polytechnique, CNRS, LMD/IPSL, Paris, 75005, France; Université de Paris, GHES, UMR 7159 LOCEAN, Paris, France; Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS/IPSL), UVSQ, Université Paris-Saclay, Paris, France
推荐引用方式 GB/T 7714	Funatsu B.M.,Le Roux R.,Arvor D.,等. Assessing precipitation extremes (1981–2018) and deep convective activity (2002–2018) in the Amazon region with CHIRPS and AMSU data[J],2021.
APA	Funatsu B.M..,Le Roux R..,Arvor D..,Espinoza J.C..,Claud C..,...&Dubreuil V..(2021).Assessing precipitation extremes (1981–2018) and deep convective activity (2002–2018) in the Amazon region with CHIRPS and AMSU data.Climate Dynamics.
MLA	Funatsu B.M.,et al."Assessing precipitation extremes (1981–2018) and deep convective activity (2002–2018) in the Amazon region with CHIRPS and AMSU data".Climate Dynamics (2021).