气候变化领域集成服务门户(CCPortal): Benefits and added value of convection-permitting climate modeling over Fenno-Scandinavia

CCPortal

DOI	10.1007/s00382-020-05359-3
	Benefits and added value of convection-permitting climate modeling over Fenno-Scandinavia
	Lind P.; Belušić D.; Christensen O.B.; Dobler A.; Kjellström E.; Landgren O.; Lindstedt D.; Matte D.; Pedersen R.A.; Toivonen E.; Wang F.
发表日期	2020
ISSN	0930-7575
起始页码	1893
结束页码	1912
卷号	55
英文摘要	Convection-permitting climate models have shown superior performance in simulating important aspects of the precipitation climate including extremes and also to give partly different climate change signals compared to coarser-scale models. Here, we present the first long-term (1998–2018) simulation with a regional convection-permitting climate model for Fenno-Scandinavia. We use the HARMONIE-Climate (HCLIM) model on two nested grids; one covering Europe at 12 km resolution (HCLIM12) using parameterized convection, and one covering Fenno-Scandinavia with 3 km resolution (HCLIM3) with explicit deep convection. HCLIM12 uses lateral boundaries from ERA-Interim reanalysis. Model results are evaluated against reanalysis and various observational data sets, some at high resolutions. HCLIM3 strongly improves the representation of precipitation compared to HCLIM12, most evident through reduced “drizzle” and increased occurrence of higher intensity events as well as improved timing and amplitude of the diurnal cycle. This is the case even though the model exhibits a cold bias in near-surface temperature, particularly for daily maximum temperatures in summer. Simulated winter precipitation is biased high, primarily over complex terrain. Considerable undercatchment in observations may partly explain the wet bias. Examining instead the relative occurrence of snowfall versus rain, which is sensitive to variance in topographic heights it is shown that HCLIM3 provides added value compared to HCLIM12 also for winter precipitation. These results, indicating clear benefits of convection-permitting models, are encouraging motivating further exploration of added value in this region, and provide a valuable basis for impact studies. © 2020, The Author(s).
英文关键词	Convection-permitting climate modeling; Diurnal cycle; Extremes; Fenno-Scandinavia; HARMONIE-climate; Precipitation
语种	英语
scopus关键词	atmospheric convection; climate change; climate modeling; computer simulation; image resolution; parameterization; precipitation (climatology); regional climate; Fennoscandia
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/145334
作者单位	Rossby Centre, Swedish Meteorological and Hydrological Institute, Folkborgsvägen 17, Norrköping, 60176, Sweden; Danish Meteorological Institute, Copenhagen, Denmark; Norwegian Meteorological Institute, Oslo, Norway; University of Copenhagen, Copenhagen, Denmark; Finnish Meteorological Institute, Helsinki, Finland
推荐引用方式 GB/T 7714	Lind P.,Belušić D.,Christensen O.B.,et al. Benefits and added value of convection-permitting climate modeling over Fenno-Scandinavia[J],2020,55.
APA	Lind P..,Belušić D..,Christensen O.B..,Dobler A..,Kjellström E..,...&Wang F..(2020).Benefits and added value of convection-permitting climate modeling over Fenno-Scandinavia.Climate Dynamics,55.
MLA	Lind P.,et al."Benefits and added value of convection-permitting climate modeling over Fenno-Scandinavia".Climate Dynamics 55(2020).