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DOI | 10.1002/joc.5253 |
Heat waves in Finland: present and projected summertime extreme temperatures and their associated circulation patterns | |
Kim, Sol1,2; Sinclair, Victoria A.1; Raisanen, Jouni1; Ruuhela, Reija3 | |
2018-03-15 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:3页码:1393-1408 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland |
英文摘要 | The number and intensity of individual hot days affecting Finland in the current and future climate is investigated together with the circulation patterns associated with the hot days. In addition, the number, length and intensity of heat waves lasting at least 3days is also considered. ERA-Interim reanalysis data and both direct model output and bias-corrected data for historical and future climate [representative concentration pathway 4.5 (RCP4.5) scenario] simulations from 17 global climate models are analysed. Three intensities of heat waves and hot days are defined based on daily mean temperature thresholds of 20, 24 and 28 degrees C. The percentage of summertime days which exceed these temperature thresholds is shown to increase in the future. In ERA-Interim, 24% of summertime days in southern Finland exceed the lowest temperature threshold while none exceed the highest temperature threshold. Under the RCP4.5 scenario these values increase to 47 and 1%, respectively. Larger relative changes occur in northern Finland. Heat waves are also longer in the RCP4.5 simulations than in the historical simulations. In southern Finland, the mean length of a heat wave where the 20 degrees C daily mean temperature is exceeded is 6.1days in the historical simulations but increases to 9.4days in the RCP4.5 simulations. The hot days in both northern and southern Finland are associated with a statistically significant positive pressure anomaly over Finland and to the east to Finland and a statistically significant negative pressure anomaly over Russia between 90 and 120 degrees E. These pressure anomalies were evident for all intensities of hot days in the current climate and the future climate. The magnitude of the pressure anomalies increases as the daily mean temperature threshold increases. However, for hot days which exceed the same daily mean temperature threshold, the pressure anomalies are weaker in the RCP4.5 simulations than in the historical or ERA-Interim data. |
英文关键词 | circulation patterns climate change CMIP5 Finland heat waves |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426729300021 |
WOS关键词 | EUROPE |
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/37343 |
专题 | 气候变化 |
作者单位 | 1.Univ Helsinki, Dept Phys, Helsinki, Finland; 2.Fulbright, Helsinki, Finland; 3.Finnish Meteorol Inst, Helsinki, Finland |
推荐引用方式 GB/T 7714 | Kim, Sol,Sinclair, Victoria A.,Raisanen, Jouni,et al. Heat waves in Finland: present and projected summertime extreme temperatures and their associated circulation patterns[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(3):1393-1408. |
APA | Kim, Sol,Sinclair, Victoria A.,Raisanen, Jouni,&Ruuhela, Reija.(2018).Heat waves in Finland: present and projected summertime extreme temperatures and their associated circulation patterns.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(3),1393-1408. |
MLA | Kim, Sol,et al."Heat waves in Finland: present and projected summertime extreme temperatures and their associated circulation patterns".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.3(2018):1393-1408. |
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