Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.01.017 |
The unusual wet summer (July) of 2014 in Southern Europe | |
Ratna, Satyaban B.1; Ratnam, J. V.1; Behera, Swadhin K.1; Cherchi, Annalisa2,3; Wang, Wanqiu4; Yamagata, Toshio1 | |
2017-06-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2017 |
卷号 | 189 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; Italy; USA |
英文摘要 | Southern Europe (Italy and the surrounding countries) experienced an unusual wet summer in 2014. The monthly rainfall in July 2014 was 84% above (more than three standard deviation) normal with respect to the 19822013 July climatology. The heavy rainfall damaged agriculture, and affected tourism and overall economy of the region. In this study, we tried to understand the physical mechanisms responsible for such abnormal weather by using model and observed datasets. The anomalously high precipitation over Italy is found to be associated with the positive sea surface temperature (SST) and convective anomalies in the tropical Pacific through the atmospheric teleconnection. Rossby wave activity flux at upper levels shows an anomalous tropospheric quasi stationary Rossby wave from the Pacific with an anomalous cyclonic phase over southern Europe. This anomalous cyclonic circulation is barotropic in nature and seen extending to lower atmospheric levels, weakening the seasonal high and causing heavy precipitation over the Southern Europe. The hypothesis is verified using the National Centers for Environmental Prediction (NCEP) coupled forecast system model (CFSv2) seasonal forecasts. It is found that two-month lead forecast of CFSv2 was able to capture the wet summer event of 2014 over Southern Europe. The teleconnection pattern from Pacific to Southern Europe was also forecasted realistically by the CFSv2 system. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Wet summer Southern Europe Italy Pacific ocean Sea surface temperature Teleconnection |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398007400006 |
WOS关键词 | WAVE-BREAKING CHARACTERISTICS ; NORTH-ATLANTIC OSCILLATION ; GLOBAL LAND PRECIPITATION ; CLIMATE FORECAST SYSTEM ; MEDITERRANEAN REGION ; TELECONNECTIONS ; CIRCULATION ; HEMISPHERE ; BLOCKING ; RAINFALL |
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/38195 |
专题 | 地球科学 |
作者单位 | 1.Japan Agcy Marine Earth Sci & Technol, Applicat Lab, Yokohama, Kanagawa 2360001, Japan; 2.Fdn Ctr Euromediterraneo Cambiamenti Climat, Bologna, Italy; 3.Ist Nazl Geofis & Vulcanol, Bologna, Italy; 4.NOAA, Climate Predict Ctr, NWS, NCEP, College Pk, MD USA |
推荐引用方式 GB/T 7714 | Ratna, Satyaban B.,Ratnam, J. V.,Behera, Swadhin K.,et al. The unusual wet summer (July) of 2014 in Southern Europe[J]. ATMOSPHERIC RESEARCH,2017,189. |
APA | Ratna, Satyaban B.,Ratnam, J. V.,Behera, Swadhin K.,Cherchi, Annalisa,Wang, Wanqiu,&Yamagata, Toshio.(2017).The unusual wet summer (July) of 2014 in Southern Europe.ATMOSPHERIC RESEARCH,189. |
MLA | Ratna, Satyaban B.,et al."The unusual wet summer (July) of 2014 in Southern Europe".ATMOSPHERIC RESEARCH 189(2017). |
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