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| DOI | 10.1175/JCLI-D-23-0368.1 |
| Benchmark Thermodynamic Contributors to the Growth and Decay of the Regional Extreme Surface Temperature | |
| 发表日期 | 2024 |
| ISSN | 0894-8755 |
| EISSN | 1520-0442 |
| 起始页码 | 37 |
| 结束页码 | 7 |
| 卷号 | 37期号:7 |
| 英文摘要 | A thermodynamic energy budget analysis is applied to the lowest model level of the ERA5 dataset to investigate the mechanisms that drive the growth and decay of extreme positive surface air temperature (SAT) events. Regional and seasonal variation of the mechanisms are investigated. For each grid point on Earth's surface, a separate composite analysis is performed for extreme SAT events, which are days when temperature anomaly exceeds the 95th percentile. Among the dynamical terms, horizontal temperature advection of the climatological temperature by the anomalous wind dominates SAT anomaly growth over the extratropics, while nonlinear horizontal temperature advection is a major factor over high -latitude regions and the adiabatic warming is important over major mountainous regions. During the decay period, advection of the climatological temperature by the anomalous wind sustains the warming while nonlinear advection becomes the dominant decay mechanism. Among diabatic heating processes, vertical mixing contributes to the SAT anomaly growth over most locations while longwave radiative cooling hinders SAT anomaly growth, especially over the ocean. However, over arid regions during summer, longwave heating largely contributes to SAT anomaly growth while the vertical mixing dampens the SAT anomaly growth. During the decay period, both longwave cooling and vertical mixing contribute to SAT anomaly decay with more pronounced effects over the ocean and land, respectively. These regional and seasonal characteristics of the processes that drive extreme SAT events can serve as a benchmark for understanding the future behavior of extreme weather. |
| 英文关键词 | Extreme events; Heat wave; Surface temperature |
| 语种 | 英语 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001186249100001 |
| 来源期刊 | JOURNAL OF CLIMATE
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/296551 |
| 作者单位 | Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Princeton University; National Oceanic Atmospheric Admin (NOAA) - USA |
| 推荐引用方式 GB/T 7714 | . Benchmark Thermodynamic Contributors to the Growth and Decay of the Regional Extreme Surface Temperature[J],2024,37(7). |
| APA | (2024).Benchmark Thermodynamic Contributors to the Growth and Decay of the Regional Extreme Surface Temperature.JOURNAL OF CLIMATE,37(7). |
| MLA | "Benchmark Thermodynamic Contributors to the Growth and Decay of the Regional Extreme Surface Temperature".JOURNAL OF CLIMATE 37.7(2024). |
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