气候变化领域集成服务门户(CCPortal): A new look at the variance of summertime temperatures over land

CCPortal

DOI	10.1175/JCLI-D-19-0887.1
	A new look at the variance of summertime temperatures over land
	Vargas Zeppetello L.R.; Battisti D.S.; Baker M.B.
发表日期	2020
ISSN	0894-8755
起始页码	5465
结束页码	5477
卷号	33 期号:13
英文摘要	The increasing frequency of very high summertime temperatures has motivated growing interest in the processes determining the probability distribution of surface temperature over land. Here, we show that on monthly time scales, temperature anomalies can be modeled as linear responses to fluctuations in shortwave radiation and precipitation. Our model contains only three adjustable parameters, and, surprisingly, these can be taken as constant across the globe, notwithstanding large spatial variability in topography, vegetation, and hydrological processes. Using observations of shortwave radiation and precipitation from 2000 to 2017, the model accurately reproduces the observed pattern of temperature variance throughout the Northern Hemisphere midlatitudes. In addition, the variance in latent heat flux estimated by the model agrees well with the few long-term records that are available in the central United States. As an application of the model, we investigate the changes in the variance of monthly averaged surface temperature that might be expected due to anthropogenic climate change. We find that a climatic warming of 48C causes a 10% increase in temperature variance in parts of North America. © 2020 American Meteorological Society.
英文关键词	Atmospheric temperature; Climate change; Heat flux; Probability distributions; Surface properties; Topography; Adjustable parameters; Anthropogenic climate changes; Hydrological process; Northern Hemispheres; Short-wave radiation; Spatial variability; Surface temperatures; Temperature variance; Climate models; climate change; evapotranspiration; land-atmosphere interaction; probability; shortwave radiation; soil moisture; summer; surface temperature; variance analysis; United States
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/171244
作者单位	Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
推荐引用方式 GB/T 7714	Vargas Zeppetello L.R.,Battisti D.S.,Baker M.B.. A new look at the variance of summertime temperatures over land[J],2020,33(13).
APA	Vargas Zeppetello L.R.,Battisti D.S.,&Baker M.B..(2020).A new look at the variance of summertime temperatures over land.Journal of Climate,33(13).
MLA	Vargas Zeppetello L.R.,et al."A new look at the variance of summertime temperatures over land".Journal of Climate 33.13(2020).