DOI: 10.1007/s00382-015-2793-9
Scopus记录号: 2-s2.0-84939233884
论文题名: Future trends of snowfall days in northern Spain from ENSEMBLES regional climate projections
作者: Pons M.R. ; Herrera S. ; Gutiérrez J.M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 46, 期: 2017-11-12 起始页码: 3645
结束页码: 3655
语种: 英语
英文关键词: Climate change
; Dynamical downscaling
; ENSEMBLES
; Regional climate modeling
; Snowfall occurrence
; Snowfall trends
英文摘要: In a previous study Pons et al. (Clim Res 54(3):197–207, 2010. doi:10.3354/cr01117g) reported a significant decreasing trend of snowfall occurrence in the Northern Iberian Peninsula since the mid 70s. The study was based on observations of annual snowfall frequency (measured as the annual number of snowfall days NSD) from a network of 33 stations ranging from 60 to 1350 m. In the present work we analyze the skill of Regional Climate Models (RCMs) to reproduce this trend for the period 1961–2000 (using both reanalysis- and historical GCM-driven boundary conditions) and the trend and the associated uncertainty of the regional future projections obtained under the A1B scenario for the first half of the twenty-first century. In particular, we consider the regional simulation dataset from the EU-funded ENSEMBLES project, consisting of thirteen state-of-the-art RCMs run at 25 km resolution over Europe. While ERA40 severely underestimates both the mean NSD and its observed trend (−2.2 days/decade), the corresponding RCM simulations driven by the reanalysis appropriately capture the interannual variability and trends of the observed NSD (trends ranging from −3.4 to −0.7, −2.1 days/decade for the ensemble mean). The results driven by the GCM historical runs are quite variable, with trends ranging from −8.5 to 0.2 days/decade (−1.5 days/decade for the ensemble mean), and the greatest uncertainty by far being associated with the particular GCM used. Finally, the trends for the future 2011–2050 A1B runs are more consistent and significant, ranging in this case from −3.7 to −0.5 days/decade (−2.0 days/decade for the ensemble mean), indicating a future significant decreasing trend. These trends are mainly determined by the increasing temperatures, as indicated by the interannual correlation between temperature and NSD (−0.63 in the observations), which is preserved in both ERA40- and GCM-driven simulations. © 2015, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53708
Appears in Collections: 过去全球变化的重建
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作者单位: Agencia Estatal de Meteorología (AEMET), Santander, Spain; Grupo de Meteorología, Dpto. de Matemática Aplicada y C.C., Universidad de Cantabria, Santander, Spain; Grupo de Meteorología, Instituto de Física de Cantabria (UC-CSIC), Santander, Spain
Recommended Citation:
Pons M.R.,Herrera S.,Gutiérrez J.M.. Future trends of snowfall days in northern Spain from ENSEMBLES regional climate projections[J]. Climate Dynamics,2016-01-01,46(2017-11-12)