气候变化领域集成服务门户(CCPortal): Impacts of orography on large-scale atmospheric circulation

CCPortal

DOI	10.1038/s41612-019-0065-9
	Impacts of orography on large-scale atmospheric circulation
	Sandu I.; van Niekerk A.; Shepherd T.G.; Vosper S.B.; Zadra A.; Bacmeister J.; Beljaars A.; Brown A.R.; Dörnbrack A.; McFarlane N.; Pithan F.; Svensson G.
发表日期	2019
ISSN	23973722
卷号	2 期号:1
英文摘要	Some of the largest and most persistent circulation errors in global numerical weather prediction and climate models are attributable to the inadequate representation of the impacts of orography on the atmospheric flow. Existing parametrization approaches attempting to account for unresolved orographic processes, such as turbulent form drag, low-level flow blocking or mountain waves, have been successful to some extent. They capture the basic impacts of the unresolved orography on atmospheric circulation in a qualitatively correct way and have led to significant progress in both numerical weather prediction and climate modelling. These approaches, however, have apparent limitations and inadequacies due to poor observational evidence, insufficient fundamental knowledge and an ambiguous separation between resolved and unresolved orographic scales and between different orographic processes. Numerical weather prediction and climate modelling has advanced to a stage where these inadequacies have become critical and hamper progress by limiting predictive skill on a wide range of spatial and temporal scales. More physically based approaches are needed to quantify the relative importance of apparently disparate orographic processes and to account for their combined effects in a rational and accurate way in numerical models. We argue that, thanks to recent advances, significant progress can be made by combining theoretical approaches with observations, inverse modelling techniques and high-resolution and idealized numerical simulations. © 2019, The Author(s).
语种	英语
scopus关键词	atmospheric circulation; climate modeling; computer simulation; numerical model; orographic effect; spatiotemporal analysis; weather forecasting
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/178107
作者单位	European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom; Met Office, Exeter, United Kingdom; Department of Meteorology, University of Reading, Reading, United Kingdom; Environment and Climate Change Canada, Dorval, QC, Canada; National Center for Atmospheric Research, Boulder, CO, United States; DLR, Institute of Atmospheric Physics, Oberpfaffenhofen, Germany; University of Victoria, Victoria, Canada; Alfred Wegener Institut, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; Department of Meteorology (MISU), Stockholm University, Stockholm, Sweden
推荐引用方式 GB/T 7714	Sandu I.,van Niekerk A.,Shepherd T.G.,et al. Impacts of orography on large-scale atmospheric circulation[J],2019,2(1).
APA	Sandu I..,van Niekerk A..,Shepherd T.G..,Vosper S.B..,Zadra A..,...&Svensson G..(2019).Impacts of orography on large-scale atmospheric circulation.npj Climate and Atmospheric Science,2(1).
MLA	Sandu I.,et al."Impacts of orography on large-scale atmospheric circulation".npj Climate and Atmospheric Science 2.1(2019).