气候变化领域集成服务门户(CCPortal): Evaluation of SO2, SO42-and an updated SO2dry deposition parameterization in the United Kingdom Earth System Model

CCPortal

DOI	10.5194/acp-21-18465-2021
	Evaluation of SO2, SO42-and an updated SO2dry deposition parameterization in the United Kingdom Earth System Model
	Hardacre C.; Mulcahy J.P.; Pope R.J.; Jones C.G.; Rumbold S.T.; Li C.; Johnson C.; Turnock S.T.
发表日期	2021
ISSN	1680-7316
起始页码	18465
结束页码	18497
卷号	21 期号:24
英文摘要	In this study we evaluate simulated surface SO2 and sulfate (SO42-) concentrations from the United Kingdom Earth System Model (UKESM1) against observations from ground-based measurement networks in the USA and Europe for the period 1987-2014. We find that UKESM1 captures the historical trend for decreasing concentrations of atmospheric SO2 and SO42- in both Europe and the USA over the period 1987-2014. However, in the polluted regions of the eastern USA and Europe, UKESM1 over-predicts surface SO2 concentrations by a factor of 3 while under-predicting surface SO42- concentrations by 25%-35%. In the cleaner western USA, the model over-predicts both surface SO2 and SO42- concentrations by factors of 12 and 1.5 respectively. We find that UKESM1's bias in surface SO2 and SO42- concentrations is variable according to region and season. We also evaluate UKESM1 against total column SO2 from the Ozone Monitoring Instrument (OMI) using an updated data product. This comparison provides information about the model's global performance, finding that UKESM1 over-predicts total column SO2 over much of the globe, including the large source regions of India, China, the USA, and Europe as well as over outflow regions. Finally, we assess the impact of a more realistic treatment of the model's SO2 dry deposition parameterization. This change increases SO2 dry deposition to the land and ocean surfaces, thus reducing the atmospheric loading of SO2 and SO42-. In comparison with the ground-based and satellite observations, we find that the modified parameterization reduces the model's over-prediction of surface SO2 concentrations and total column SO2. Relative to the ground-based observations, the simulated surface SO42- concentrations are also reduced, while the simulated SO2 dry deposition fluxes increase. © 2021 Catherine Hardacre et al.
语种	英语
scopus关键词	computer simulation; concentration (composition); deposition; dry deposition; parameterization; satellite data; sea surface; sulfate; sulfur dioxide; Europe; United States
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/246354
作者单位	Met Office, Exeter, EX1 3PB, United Kingdom; School Earth and Environment, University of Leeds, Leeds, United Kingdom; National Centre for Atmospheric Science, University of Leeds, Leeds, United Kingdom; Nasa Goddard Space Flight Center, Greenbelt, MD 20771, United States; Earth System Science Interdisciplinary Center, University of Maryland, College ParkMD 20742, United States; University of Leeds Met Office Strategic (LUMOS) Research Group, School of Earth and Environment, University of Leeds, Leeds, United Kingdom
推荐引用方式 GB/T 7714	Hardacre C.,Mulcahy J.P.,Pope R.J.,et al. Evaluation of SO2, SO42-and an updated SO2dry deposition parameterization in the United Kingdom Earth System Model[J],2021,21(24).
APA	Hardacre C..,Mulcahy J.P..,Pope R.J..,Jones C.G..,Rumbold S.T..,...&Turnock S.T..(2021).Evaluation of SO2, SO42-and an updated SO2dry deposition parameterization in the United Kingdom Earth System Model.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(24).
MLA	Hardacre C.,et al."Evaluation of SO2, SO42-and an updated SO2dry deposition parameterization in the United Kingdom Earth System Model".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.24(2021).