气候变化领域集成服务门户(CCPortal): Eurasian snow depth in long-term climate reanalyses

CCPortal

DOI	10.5194/tc-11-923-2017
	Eurasian snow depth in long-term climate reanalyses
	Wegmann M.; Orsolini Y.; Dutra E.; Bulygina O.; Sterin A.; Brönnimann S.
发表日期	2017
ISSN	19940416
卷号	11 期号:2
英文摘要	Snow cover variability has significant effects on local and global climate evolution. By changing surface energy fluxes and hydrological conditions, changes in snow cover can alter atmospheric circulation and lead to remote climate effects. To document such multi-scale climate effects, atmospheric reanalysis and derived products offer the opportunity to analyze snow variability in great detail far back to the early 20th century. So far only little is know about their quality. Comparing snow depth in four long-term reanalysis datasets with Russian in situ snow depth data, we find a moderately high daily correlation (around 0.6-0.7), which is comparable to correlations for the recent era (1981-2010), and a good representation of sub-decadal variability. However, the representation of pre-1950 inter-decadal snow variability is questionable, since reanalysis products divert towards different base states. Limited availability of independent long-term snow data makes it difficult to assess the exact cause for this bifurcation in snow states, but initial investigations point towards representation of the atmosphere rather than differences in assimilated data or snow schemes. This study demonstrates the ability of long-term reanalysis to reproduce snow variability accordingly. © 2017 Author(s).
学科领域	atmospheric circulation; bifurcation; climate conditions; climate effect; comparative study; decadal variation; energy flux; global climate; long-term change; snow cover; twentieth century; Russian Federation
语种	英语
scopus关键词	atmospheric circulation; bifurcation; climate conditions; climate effect; comparative study; decadal variation; energy flux; global climate; long-term change; snow cover; twentieth century; Russian Federation
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119414
作者单位	Institut des Géosciences de l'Environnement, University of Grenoble, Grenoble, France; Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland; Institute of Geography, University of Bern, Bern, Switzerland; NILU-Norwegian Institute for Air Research, Kjeller, Norway; ECMWF-European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom; Instituto Dom Luiz, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal; All-Russian Research Institute of Hydrometeorological Information, World Data Centre, Obninsk, Russian Federation
推荐引用方式 GB/T 7714	Wegmann M.,Orsolini Y.,Dutra E.,et al. Eurasian snow depth in long-term climate reanalyses[J],2017,11(2).
APA	Wegmann M.,Orsolini Y.,Dutra E.,Bulygina O.,Sterin A.,&Brönnimann S..(2017).Eurasian snow depth in long-term climate reanalyses.Cryosphere,11(2).
MLA	Wegmann M.,et al."Eurasian snow depth in long-term climate reanalyses".Cryosphere 11.2(2017).