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DOI | 10.1175/JCLI-D-16-0438.1 |
The Record-Breaking Hot Summer in 2015 over Hawaii and Its Physical Causes | |
Zhu, Zhiwei; Li, Tim1 | |
2017-06-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Hawaiian surface air temperature (HST) during the summer of 2015 (from July to October) was about 1.5 degrees C higher than the climatological mean, which was the hottest since records began in 1948. In the context of record-breaking seasonal- mean high temperature, 98 exceptional local heatwave days occurred during the summer of 2015. Based on diagnoses and simulations, this paper demonstrates that the record- high HST during the summer of 2015 arose mainly from the combined effects of the interannual and interdecadal variability of sea surface temperature anomalies (SSTAs). The interannual variability of SSTAs, with an El Nino-like pattern in the tropics and cold (warm) anomalies over the western (eastern) North Pacific, was the primary contributor to the abnormally high HST in the summer of 2015. This interannual tropical-extratropical SSTA pattern was accompanied by low- level southwesterly anomalies over the central North Pacific, which weakened the climatological northeasterly trade winds and reduced the ventilation effect, warming Hawaii. Numerical experiments further revealed that the SST warming in the subtropical eastern North Pacific was mostly responsible for the weakened trade winds and warming over Hawaii. Interdecadal SST warming in the tropics was a secondary factor. By superimposing the positive SSTAs over the Indo-Pacific warm pool and tropical North Atlantic Ocean upon the climatological- mean maximum SST regions, it was found that these anomalies led to enhanced convection over the Maritime Continent and the oceans around Mexico, causing anomalous subsidence and reduced cloud cover over the tropical central North Pacific. The reduced cloudiness increased the amount of downward solar radiation, thus warming Hawaii. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401007500018 |
WOS关键词 | WINTER RAINFALL ; TEMPERATURE ; VARIABILITY ; PARADIGM ; PATTERNS ; TRENDS ; ENSO |
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/19805 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Key Lab Meteorol Disaster, Minist Educ, Joint Int Res Lab Climate & Environm Change,Colla, Nanjing, Jiangsu, Peoples R China; 2.Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA; 3.Univ Hawaii Manoa, Dept Atmospher Sci, Honolulu, HI 96822 USA |
推荐引用方式 GB/T 7714 | Zhu, Zhiwei,Li, Tim. The Record-Breaking Hot Summer in 2015 over Hawaii and Its Physical Causes[J]. JOURNAL OF CLIMATE,2017,30(11). |
APA | Zhu, Zhiwei,&Li, Tim.(2017).The Record-Breaking Hot Summer in 2015 over Hawaii and Its Physical Causes.JOURNAL OF CLIMATE,30(11). |
MLA | Zhu, Zhiwei,et al."The Record-Breaking Hot Summer in 2015 over Hawaii and Its Physical Causes".JOURNAL OF CLIMATE 30.11(2017). |
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