气候变化领域集成服务门户(CCPortal): Multi-model evaluation of the sensitivity of the global energy budget and hydrological cycle to resolution

CCPortal

DOI	10.1007/s00382-018-4547-y
	Multi-model evaluation of the sensitivity of the global energy budget and hydrological cycle to resolution
	Vannière B.; Demory M.-E.; Vidale P.L.; Schiemann R.; Roberts M.J.; Roberts C.D.; Matsueda M.; Terray L.; Koenigk T.; Senan R.
发表日期	2019
ISSN	0930-7575
起始页码	6817
结束页码	6846
卷号	52 期号:11
英文摘要	This study undertakes a multi-model comparison with the aim to describe and quantify systematic changes of the global energy and water budgets when the horizontal resolution of atmospheric models is increased and to identify common factors of these changes among models. To do so, we analyse an ensemble of twelve atmosphere-only and six coupled GCMs, with different model formulations and with resolutions spanning those of state-of-the-art coupled GCMs, i.e. from resolutions coarser than 100 km to resolutions finer than 25 km. The main changes in the global energy budget with resolution are a systematic increase in outgoing longwave radiation and decrease in outgoing shortwave radiation due to changes in cloud properties, and a systematic increase in surface latent heat flux; when resolution is increased from 100 to 25 km, the magnitude of the change of those fluxes can be as large as 5 W m−2. Moreover, all but one atmosphere-only model simulate a decrease of the poleward energy transport at higher resolution, mainly explained by a reduction of the equator-to-pole tropospheric temperature gradient. Regarding hydrological processes, our results are the following: (1) there is an increase of global precipitation with increasing resolution in all models (up to 40 × 103 km3 year−1) but the partitioning between land and ocean varies among models; (2) the fraction of total precipitation that falls on land is on average 10% larger at higher resolution in grid point models, but it is smaller at higher resolution in spectral models; (3) grid points models simulate an increase of the fraction of land precipitation due to moisture convergence twice as large as in spectral models; (4) grid point models, which have a better resolved orography, show an increase of orographic precipitation of up to 13 × 103 km3 year−1 which explains most of the change in land precipitation; (5) at the regional scale, precipitation pattern and amplitude are improved with increased resolution due to a better simulated seasonal mean circulation. We discuss our results against several observational estimates of the Earth's energy budget and hydrological cycle and show that they support recent high estimates of global precipitation. © 2018, The Author(s).
英文关键词	Global energy budget; Global hydrological cycle; High-resolution modelling; Sensitivity to model resolution
语种	英语
scopus关键词	energy budget; general circulation model; hydrological cycle; precipitation (climatology); sensitivity analysis; spectral resolution; water budget
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/146230
作者单位	Department of Meteorology, NCAS Climate, University of Reading, Whiteknights Campus Earley Gate, PO Box 243, Reading, RG6 6BB, United Kingdom; Met Office Hadley Centre, Exeter, United Kingdom; European Centre for Medium-Range Weather Forecasting (ECMWF), Reading, United Kingdom; Center for Computational Sciences, University of Tsukuba, Tsukuba, Japan; Climat, Environnement, Couplages, Incertitudes, CECI, Université de Toulouse, CNRS, Cerfacs, Toulouse, France; Rossby Centre, Swedish Meteorological and Hydrological Institute, Norrköping, Sweden
推荐引用方式 GB/T 7714	Vannière B.,Demory M.-E.,Vidale P.L.,et al. Multi-model evaluation of the sensitivity of the global energy budget and hydrological cycle to resolution[J],2019,52(11).
APA	Vannière B..,Demory M.-E..,Vidale P.L..,Schiemann R..,Roberts M.J..,...&Senan R..(2019).Multi-model evaluation of the sensitivity of the global energy budget and hydrological cycle to resolution.Climate Dynamics,52(11).
MLA	Vannière B.,et al."Multi-model evaluation of the sensitivity of the global energy budget and hydrological cycle to resolution".Climate Dynamics 52.11(2019).