气候变化领域集成服务门户(CCPortal): Satellite Formaldehyde to Support Model Evaluation

CCPortal

DOI	10.1029/2020JD032881
	Satellite Formaldehyde to Support Model Evaluation
	Harkey M.; Holloway T.; Kim E.J.; Baker K.R.; Henderson B.
发表日期	2021
ISSN	2169897X
卷号	126 期号:4
英文摘要	Formaldehyde (HCHO), a known carcinogen classified as a hazardous pollutant by the United States Environmental Protection Agency (U.S. EPA), is measured through monitoring networks across the U.S. Since these data are limited in spatial and temporal extent, model simulations from the U.S. EPA Community Multiscale Air Quality (CMAQ) model are used to estimate ambient HCHO exposure for the EPA National Air Toxics Assessment (NATA). Here, we employ satellite HCHO retrievals from the Ozone Monitoring Instrument (OMI)—the NASA retrieval developed by the Smithsonian Astrophysical Observatory (SAO), and the European Union Quality Assurance for Essential Climate Variables (QA4ECV) retrieval—to evaluate three CMAQ configurations, spanning the summers of 2011 and 2016, with differing biogenic emissions inputs and chemical mechanisms. These CMAQ configurations capture the general spatial and temporal behavior of both satellite retrievals, but underestimate column HCHO, particularly in the western U.S. In the southeastern U.S., the comparison with OMI HCHO highlights differences in modeled meteorology and biogenic emissions even with differences in satellite retrievals. All CMAQ configurations show low daily correlations with OMI HCHO (r = 0.26–0.38), however, we find higher monthly correlations (r = 0.52–0.73), and the models correlate best with the OMI-QA4ECV product. Compared to surface observations, we find improved agreement over a 24-h period compared to afternoon-only, suggesting daily HCHO amounts are captured with more accuracy than afternoon amounts. This work highlights the potential for synergistic improvements in modeling and satellite retrievals to support near-surface HCHO estimates for the NATA and other applications. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	CMAQ; formaldehyde; model; OMI; satellite
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185450
作者单位	Nelson Institute Center for Sustainability and the Global Environment (SAGE), University of Wisconsin-Madison, Madison, WI, United States; Department of Atmospheric & Oceanic Sciences, University of Wisconsin-Madison, Madison, WI, United States; U.S. Environmental Protection Agency, Research Triangle Park, NC, United States
推荐引用方式 GB/T 7714	Harkey M.,Holloway T.,Kim E.J.,et al. Satellite Formaldehyde to Support Model Evaluation[J],2021,126(4).
APA	Harkey M.,Holloway T.,Kim E.J.,Baker K.R.,&Henderson B..(2021).Satellite Formaldehyde to Support Model Evaluation.Journal of Geophysical Research: Atmospheres,126(4).
MLA	Harkey M.,et al."Satellite Formaldehyde to Support Model Evaluation".Journal of Geophysical Research: Atmospheres 126.4(2021).