气候变化领域集成服务门户(CCPortal): Local and remote temperature response of regional SO2 emissions

CCPortal

DOI	10.5194/acp-19-2385-2019
	Local and remote temperature response of regional SO2 emissions
	Lewinschal A.; Ekman A.M.L.; Hansson H.-C.; Sand M.; Berntsen T.K.; Langner J.
发表日期	2019
ISSN	16807316
起始页码	2385
结束页码	2403
卷号	19 期号:4
英文摘要	Short-lived anthropogenic climate forcers (SLCFs), such as sulfate aerosols, affect both climate and air quality. Despite being short-lived, these forcers do not affect temperatures only locally; regions far away from the emission sources are also affected. Climate metrics are often used in a policy context to compare the climate impact of different anthropogenic forcing agents. These metrics typically relate a forcing change in a certain region with a temperature change in another region and thus often require a separate model to convert emission changes to radiative forcing (RF) changes. In this study, we used a coupled Earth system model, NorESM (Norwegian Earth System Model), to calculate emission-to-temperature-response metrics for sulfur dioxide (SO2) emission changes in four different policy-relevant regions: Europe (EU), North America (NA), East Asia (EA) and South Asia (SA). We first increased the SO2 emissions in each individual region by an amount giving approximately the same global average radiative forcing change (-0.45Wm-2). The global mean temperature change per unit sulfur emission compared to the control experiment was independent of emission region and equal to ∼0.006 K(TgSyr-1)-1. On a regional scale, the Arctic showed the largest temperature response in all experiments. The second largest temperature change occurred in the region of the imposed emission increase, except when South Asian emissions were changed; in this experiment, the temperature response was approximately the same in South Asia and East Asia. We also examined the non-linearity of the temperature response by removing all anthropogenic SO2 emissions over Europe in one experiment. In this case, the temperature response (both global and regional) was twice that in the corresponding experiment with a European emission increase. This non-linearity in the temperature response is one of many uncertainties associated with the use of simplified climate metrics. © 2019 Springer Verlag. All Rights Reserved.
语种	英语
scopus关键词	climate effect; climate forcing; radiative forcing; sulfur dioxide; sulfur emission; temperature effect
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144623
作者单位	Department of Meteorology, Stockholm University, Stockholm, Sweden; Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden; Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden; CICERO Center for International Climate and Environmental Research, Oslo, Norway; Department of Geosciences, University of Oslo, Oslo, Norway; Swedish Meteorological and Hydrological Institute, Air Quality Research Unit, Norrköping, Sweden
推荐引用方式 GB/T 7714	Lewinschal A.,Ekman A.M.L.,Hansson H.-C.,et al. Local and remote temperature response of regional SO2 emissions[J],2019,19(4).
APA	Lewinschal A.,Ekman A.M.L.,Hansson H.-C.,Sand M.,Berntsen T.K.,&Langner J..(2019).Local and remote temperature response of regional SO2 emissions.Atmospheric Chemistry and Physics,19(4).
MLA	Lewinschal A.,et al."Local and remote temperature response of regional SO2 emissions".Atmospheric Chemistry and Physics 19.4(2019).