气候变化领域集成服务门户(CCPortal): On the Spin-Up Period in WRF Simulations Over Europe: Trade-Offs Between Length and Seasonality

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DOI	10.1029/2019MS001945
	On the Spin-Up Period in WRF Simulations Over Europe: Trade-Offs Between Length and Seasonality
	Jerez S.; López-Romero J.M.; Turco M.; Lorente-Plazas R.; Gómez-Navarro J.J.; Jiménez-Guerrero P.; Montávez J.P.
发表日期	2020
ISSN	19422466
卷号	12 期号:4
英文摘要	Regional climate models (RCMs) are usually initialized and driven through the boundaries of their limited area domain by data provided by global models (GCMs). The mismatch between the low-resolution GCM initial conditions and RCM's high resolution introduces physical inconsistencies between the various components of the RCM. These inconsistencies can be resolved by running the RCM during a period that is considered unreliable: the spin-up period. There is no deterministic definition of the length that the spin-up period should have. Here we try to provide general guidelines that can be used to the advantage of the community. We base our analysis on Weather Research and Forecasting (WRF) simulations over a Euro-Cordex compliant domain and find that for 2-m temperature and precipitation, rather short spin-up periods (1 week) can be sufficient. Nevertheless, longer periods (6 months) are advisable, and start dates in non-winter months should be pursued, as this ensures a more realistic representation of the snow cover. Thus, the issue is not only about the spin-up length. As the soil subsystem evolves slowly and requires longer periods to reach equilibrium than the longest considered here (1 year), seasonality plays an important role in minimizing the impact of the unreliability of the soil initialization. Fortunately, except for goals where the deep soil-atmosphere feedback are critical, the lack of equilibrium between them can be ignored, as it seems to have little effect on the simulation of the atmospheric variables most frequently used in RCM studies. ©2020. The Authors.
英文关键词	Euro-Cordex; regional climate models; spin-up period; WRF
语种	英语
scopus关键词	Climate models; Economic and social effects; Snow; Soils; Atmospheric variables; Global models; High resolution; Initial conditions; Low resolution; Regional climate models; Weather research and forecasting; Winter months; Weather forecasting; air temperature; climate conditions; general circulation model; guideline; precipitation (climatology); regional climate; seasonality; snow cover; trade-off; weather forecasting; Europe
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156721
作者单位	Regional Atmospheric Modeling (MAR) Group, Department of Physics, University of Murcia, Murcia, Spain; Department of Meteorology, Meteored, Spain
推荐引用方式 GB/T 7714	Jerez S.,López-Romero J.M.,Turco M.,et al. On the Spin-Up Period in WRF Simulations Over Europe: Trade-Offs Between Length and Seasonality[J],2020,12(4).
APA	Jerez S..,López-Romero J.M..,Turco M..,Lorente-Plazas R..,Gómez-Navarro J.J..,...&Montávez J.P..(2020).On the Spin-Up Period in WRF Simulations Over Europe: Trade-Offs Between Length and Seasonality.Journal of Advances in Modeling Earth Systems,12(4).
MLA	Jerez S.,et al."On the Spin-Up Period in WRF Simulations Over Europe: Trade-Offs Between Length and Seasonality".Journal of Advances in Modeling Earth Systems 12.4(2020).