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DOI | 10.1029/2019JD030665 |
Amplification of Australian Heatwaves via Local Land-Atmosphere Coupling | |
Hirsch, Annette L.1,2; Evans, Jason P.1,2; Di Virgilio, Giovanni2; Perkins-Kirkpatrick, Sarah E.1,2; Argueso, Daniel3; Pitman, Andrew J.1,2; Carouge, Claire C.1; Kala, Jatin4; Andrys, Julia4; Petrelli, Paola5; Rockel, Burkhardt6 | |
2019-12-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:24页码:13625-13647 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; Spain; Germany |
英文摘要 | Antecedent land surface conditions play a role in the amplification of temperature anomalies experienced during heatwaves by modifying the local partitioning of available energy between sensible and latent heating. Most existing analyses of heatwave amplification from soil moisture anomalies have focused on exceptionally rare events and consider seasonal scale timescales. However, it is not known how much the daily evolution of land surface conditions, both before and during a heatwave, contributes to the intensity and frequency of these extremes. We examine how the daily evolution of land surface conditions preceding a heatwave event contributes to heatwave intensity. We also diagnose why the land surface contribution to Australian heatwaves is not homogeneous due to spatiotemporal variations in land-atmosphere coupling. We identify two coupling regimes: a land-driven regime where surface temperatures are sensitive to local variations in sensible heating and an atmosphere-driven regime where this is not the case. Northern Australia is consistently strongly coupled, where antecedent soil moisture conditions can influence temperature anomalies up to day 4 of a heatwave. For southern Australia, heatwave temperature anomalies are not influenced by antecedent soil moisture conditions due to an atmosphere-driven coupling regime. Therefore, antecedent land surface conditions have a role in increasing the temperature anomalies experienced during a heatwave only over regions with strong land-driven coupling. The timescales over which antecedent land surface conditions contribute to Australian heatwaves also vary regionally. Overall, the spatiotemporal variations of land-atmosphere interactions help determine where and when antecedent land surface conditions contribute to Australian heat extremes. |
英文关键词 | CORDEX land-atmosphere interactions excess heat factor two-legged coupling |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000502795600001 |
WOS关键词 | SOIL-MOISTURE ; HEAT WAVES ; CLIMATE VARIABILITY ; RECORD-BREAKING ; EUROPEAN SUMMER ; MODEL ; TEMPERATURES ; PROJECTIONS ; EXTREMES ; 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/225951 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ New South Wales, ARC Ctr Excellence Climate Extremes, Sydney, NSW, Australia; 2.Univ New South Wales, Climate Change Res Ctr, Sydney, NSW, Australia; 3.Univ Balearic Isl, Dept Phys, Palma De Mallorca, Spain; 4.Murdoch Univ, Environm & Conservat Sci, Perth, WA, Australia; 5.Univ Tasmania, Inst Marine & Antarctic Sci, Hobart, Tas, Australia; 6.Helmholtz Zentrum Geesthacht, Inst Coastal Res, Geesthacht, Germany |
推荐引用方式 GB/T 7714 | Hirsch, Annette L.,Evans, Jason P.,Di Virgilio, Giovanni,et al. Amplification of Australian Heatwaves via Local Land-Atmosphere Coupling[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(24):13625-13647. |
APA | Hirsch, Annette L..,Evans, Jason P..,Di Virgilio, Giovanni.,Perkins-Kirkpatrick, Sarah E..,Argueso, Daniel.,...&Rockel, Burkhardt.(2019).Amplification of Australian Heatwaves via Local Land-Atmosphere Coupling.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(24),13625-13647. |
MLA | Hirsch, Annette L.,et al."Amplification of Australian Heatwaves via Local Land-Atmosphere Coupling".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.24(2019):13625-13647. |
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