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DOI | 10.1002/joc.5541 |
The accuracy of climate variability and trends across Arctic Fennoscandia in four reanalyses | |
Marshall, Gareth J.1; Kivinen, Sonja2; Jylha, Kirsti3; Vignols, Rebecca M.1,4; Rees, W. G.4 | |
2018-08-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:10页码:3878-3895 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Finland |
英文摘要 | Arctic Fennoscandia has undergone significant climate change over recent decades. Reanalysis data sets allow us to understand the atmospheric processes driving such changes. Here we evaluate four reanalyses against observations of near-surface air temperature (SAT) and precipitation (PPN) from 35 meteorological stations across the region for the 35-year period from 1979 to 2013. The reanalyses compared are the National Centers for Environmental Prediction (NCEP) Climate Forecast System Reanalysis (CFSR), the European Centre for Medium-Range Weather Forecast (ECMWF) Interim reanalysis (ERA-Interim), the Japanese Meteorological Agency (JMA) 55-year reanalysis (JRA-55) and National Aeronautics and Space Administration (NASA)'s Modern-Era Retrospective Analysis for Research and Applications (MERRA). All four reanalyses have an overall small cool bias across Arctic Fennoscandia, with MERRA typically similar to 1 degrees C cooler than the others. They generally reproduce the broad spatial patterns of mean SAT across the region, although less well in areas of complex orography. Observations reveal a statistically significant warming across Arctic Fennoscandia, with the majority of trends significant at p<.01. Three reanalyses show similar regional warming but of smaller magnitude while CFSR is anomalous, even having a slight cooling in some areas. In general, the other reanalyses are sufficiently accurate to reproduce the varying significance of observed seasonal trends. There are much greater differences between the reanalyses when comparing PPN to observations. MERRA-Land, which merges a gauge-based data set, is clearly the best: CFSR is the least successful, with a significant wet bias. The smoothed reanalysis orography means that the high PPN associated with the western side of the Scandinavian Mountains extends too far inland. Spatial patterns of PPN trends across the region differ markedly between the reanalyses, which have varying success at matching observations and generally fail to replicate sites with significant observed trends. Therefore, using reanalyses to analyse PPN changes in Arctic Fennoscandia should be undertaken with caution. |
英文关键词 | Arctic climate climate change Fennoscandia precipitation reanalysis temperature |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000440826000009 |
WOS关键词 | ATMOSPHERIC CIRCULATION PATTERNS ; SURFACE AIR-TEMPERATURE ; MIDLATITUDE WEATHER ; METEOROLOGICAL OBSERVATIONS ; GROWING-SEASON ; PRECIPITATION ; FINLAND ; LAPLAND ; RUSSIA ; SYSTEM |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/36912 |
专题 | 气候变化 |
作者单位 | 1.British Antarctic Survey, Nat Environm Res Council, Cambridge, England; 2.Univ Eastern Finland, Dept Geog & Hist Studies, Joensuu, Finland; 3.Finnish Meteorol Inst, Weather & Climate Change Impact Res, Helsinki, Finland; 4.Univ Cambridge, Scott Polar Res Inst, Cambridge, England |
推荐引用方式 GB/T 7714 | Marshall, Gareth J.,Kivinen, Sonja,Jylha, Kirsti,et al. The accuracy of climate variability and trends across Arctic Fennoscandia in four reanalyses[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(10):3878-3895. |
APA | Marshall, Gareth J.,Kivinen, Sonja,Jylha, Kirsti,Vignols, Rebecca M.,&Rees, W. G..(2018).The accuracy of climate variability and trends across Arctic Fennoscandia in four reanalyses.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(10),3878-3895. |
MLA | Marshall, Gareth J.,et al."The accuracy of climate variability and trends across Arctic Fennoscandia in four reanalyses".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.10(2018):3878-3895. |
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