气候变化领域集成服务门户(CCPortal): Subhourly rainfall in a convection-permitting model

CCPortal

DOI	10.1088/1748-9326/ab6787
	Subhourly rainfall in a convection-permitting model
	Meredith E.P.; Ulbrich U.; Rust H.W.
发表日期	2020
ISSN	17489318
卷号	15 期号:3
英文摘要	Convection-permitting models (CPMs) - the newest generation of high-resolution climate models - have been shown to greatly improve the representation of subdaily and hourly precipitation, in particular for extreme rainfall. Intense precipitation events, however, often occur on subhourly timescales. The distribution of subhourly precipitation, extreme or otherwise, during a rain event can furthermore have important knock-on effects on hydrological processes. Little is known about how well CPMs represent precipitation at the subhourly timescale, compared to the hourly. Here we perform multi-decadal CPM simulations centred over Catalonia and, comparing with a high temporal-resolution gauge network, find that the CPM simulates subhourly precipitation at least as well as hourly precipitation is simulated. While the CPM inherits a dry bias found in its parent model, across a range of diagnostics and aggregation times (5, 15, 30 and 60 min) we find no consistent evidence that the CPM precipitation bias worsens with shortening temporal aggregation. We furthermore show that the CPM excels in its representation of subhourly extremes, extending previous findings at the hourly timescale. Our findings support the use of CPMs for modelling subhourly rainfall and add confidence to CPM-based climate projections of future changes in subhourly precipitation, particularly for extremes. © 2020 The Author(s). Published by IOP Publishing Ltd.
语种	英语
scopus关键词	Climate models; Climate projection; Extreme rainfall; High resolution climate model; High temporal resolution; Hydrological process; Intense precipitation; Knock-on effect; Temporal aggregation; Rain; climate modeling; convection; extreme event; gauge; numerical model; precipitation intensity; Catalonia; Spain
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154161
作者单位	Institut für Meteorologie, Freie Universit t Berlin, Carl-Heinrich-Becker-Weg 6-10, Berlin, D-12165, Germany
推荐引用方式 GB/T 7714	Meredith E.P.,Ulbrich U.,Rust H.W.. Subhourly rainfall in a convection-permitting model[J],2020,15(3).
APA	Meredith E.P.,Ulbrich U.,&Rust H.W..(2020).Subhourly rainfall in a convection-permitting model.Environmental Research Letters,15(3).
MLA	Meredith E.P.,et al."Subhourly rainfall in a convection-permitting model".Environmental Research Letters 15.3(2020).