气候变化领域集成服务门户(CCPortal): Australian Precipitation Recycling and Evaporative Source Regions

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DOI	10.1175/JCLI-D-19-0926.1
	Australian Precipitation Recycling and Evaporative Source Regions
	Holgate C.M.; Evans J.P.; Dijk I.J.M.V.; Pitman J.; Virgilio G.D.I.
发表日期	2020
ISSN	0894-8755
起始页码	8721
结束页码	8735
卷号	33 期号:20
英文摘要	The relative importance of atmospheric advection and local land-atmosphere coupling to Australian precipitation is uncertain. Identifying the evaporative source regions and level of precipitation recycling can help quantify the importance of local and remotemarine and terrestrialmoisture to precipitation within the different hydroclimates acrossAustralia.Using a three-dimensional Lagrangian back-trajectory approach,moisture from precipitation events across Australia during 1979-2013 was tracked to determine the source of moisture (the evaporative origin) and level of precipitation recycling. We show that source regions vary markedly for precipitation falling in different regions. Advected marine moisture was relatively more important than terrestrial contributions for precipitation in all regions and seasons. For Australia as a whole, contributions from precipitation recycling varied from ;11%in winter up to;21%in summer. The strongest land-atmosphere coupling was in the northwest and southeastwhere recycled local land evapotranspiration accounted for an average of 9% of warm-season precipitation. Marine contributions to precipitation in the northwest of Australia increased in spring and, coupled with positive evaporation trends in the key source regions, suggest that the observed precipitation increase is the result of intensified evaporation in the Maritime Continent and Indian and Pacific Oceans. Less clear were the processes behind an observed shift in moisture contribution fromwinter to summer in southeastern Australia. Establishing the climatological source regions and the magnitude of moisture recycling enables future investigation of anomalous precipitation during extreme periods and provides further insight into the processes driving Australia's variable precipitation. ©2020 American Meteorological Society.
英文关键词	Evaporation; Moisture; Recycling; Atmospheric advection; Back trajectories; Land-atmosphere couplings; Maritime Continent; Precipitation events; Precipitation recycling; South-eastern Australia; Warm season precipitation; Evapotranspiration; advection; climate feedback; climatology; evaporation; extreme event; hydrometeorology; land-atmosphere interaction; marine atmosphere; moisture transfer; precipitation intensity; quantitative analysis; three-dimensional modeling; water vapor; Australia; Pacific Ocean; Southeast Asia
语种	英语
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/171157
作者单位	Fenner School of Environment and Society, Australian National University, Canberra, ACT, Australia; Arc Centre of Excellence for Climate System Science, University of New South Wales, Sydney, NSW, Australia; Arc Centre of Excellence for Climate Extremes, Climate Change Research Centre, School of Biological,Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, Australia; Climate Change Research Centre, School of Biological,Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, Australia
推荐引用方式 GB/T 7714	Holgate C.M.,Evans J.P.,Dijk I.J.M.V.,et al. Australian Precipitation Recycling and Evaporative Source Regions[J],2020,33(20).
APA	Holgate C.M.,Evans J.P.,Dijk I.J.M.V.,Pitman J.,&Virgilio G.D.I..(2020).Australian Precipitation Recycling and Evaporative Source Regions.Journal of Climate,33(20).
MLA	Holgate C.M.,et al."Australian Precipitation Recycling and Evaporative Source Regions".Journal of Climate 33.20(2020).