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DOI	10.1002/joc.6554
	Opposite spatial variability of climate change-induced surface temperature trends due to soil and atmospheric moisture in tropical/subtropical dry and wet land regions
	Khanna, Jaya; Cook, Kerry H.; Vizy, Edward K.
通讯作者	Khanna, J
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
ISSN	0899-8418
EISSN	1097-0088
出版年	2020
卷号	40 期号:14 页码:5887-5905
英文摘要	Regional responses to surface warming are strongly influenced by the availability of surface or atmospheric moisture. For example, differences in evapotranspiration, atmospheric temperature lapse rate and heat capacity due to the availability of water over oceans and its lack over land contribute to an observed land/ocean warming ratio that is greater than one. This study shows that mechanisms related to the distributions of soil or atmospheric moisture could result in variations in regional climate change over land in the tropics and subtropics. Using atmospheric reanalyses and observations for the satellite era (1979-2016) within +/- 30 degrees latitude, the analysis shows that dry regions such as northern and southern Africa and south-central Australia have a significant negative regional spatial correlation between time-averaged soil moisture/evapotranspiration and surface temperature trends. In contrast, wet tropical regions such as Amazonia and the Congo Basin display a significant positive spatial correlation between these quantities. Spatial correlations suggest that a regional amplification of surface temperature trends in wet regions could be associated with a robust positive longwave radiative effect of high clouds which co-occur with wet soils. This positive relationship is strongest during austral summer, dominated by the summer seasons in the Amazon and Congo basins. These differences in regional sensitivity to greenhouse gas warming can be consequential for regional climate change assessment, for both tropical forests, which could already be operating at their high temperature limit, and also for dry desert regions, which are already marginal for supporting life.
英文关键词	Amazon rain forest cloud radiative effect land-atmosphere coupling regional climate change soil moisture surface warming amplification
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000588053600005
WOS关键词	AMAZON BASIN ; WARMING CONTRAST ; PART I ; WATER ; SEASONALITY ; PERFORMANCE ; JRA-55 ; IMPACT
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327441
作者单位	[Khanna, Jaya; Cook, Kerry H.; Vizy, Edward K.] Univ Texas Austin, Dept Geol Sci, Jackson Sch Geosci, Austin, TX 78712 USA; [Khanna, Jaya] Homi Bhabha Natl Inst, Natl Inst Sci Educ & Res, Sch Earth & Planetary Sci, Room 04,Lib Complex, Jatni 752050, Odisha, India
推荐引用方式 GB/T 7714	Khanna, Jaya,Cook, Kerry H.,Vizy, Edward K.. Opposite spatial variability of climate change-induced surface temperature trends due to soil and atmospheric moisture in tropical/subtropical dry and wet land regions[J],2020,40(14):5887-5905.
APA	Khanna, Jaya,Cook, Kerry H.,&Vizy, Edward K..(2020).Opposite spatial variability of climate change-induced surface temperature trends due to soil and atmospheric moisture in tropical/subtropical dry and wet land regions.INTERNATIONAL JOURNAL OF CLIMATOLOGY,40(14),5887-5905.
MLA	Khanna, Jaya,et al."Opposite spatial variability of climate change-induced surface temperature trends due to soil and atmospheric moisture in tropical/subtropical dry and wet land regions".INTERNATIONAL JOURNAL OF CLIMATOLOGY 40.14(2020):5887-5905.