气候变化领域集成服务门户(CCPortal): Validation of satellite formaldehyde (HCHO) retrievals using observations from 12 aircraft campaigns

CCPortal

DOI	10.5194/acp-20-12329-2020
	Validation of satellite formaldehyde (HCHO) retrievals using observations from 12 aircraft campaigns
	Zhu L.; González Abad G.; Nowlan C.R.; Miller C.C.; Chance K.; Apel E.C.; Digangi J.P.; Fried A.; Hanisco T.F.; Hornbrook R.S.; Hu L.; Kaiser J.; Keutsch F.N.; Permar W.; St. Clair J.M.; Wolfe G.M.
发表日期	2020
ISSN	1680-7316
起始页码	12329
结束页码	12345
卷号	20 期号:20
英文摘要	Formaldehyde (HCHO) has been measured from space for more than 2 decades. Owing to its short atmospheric lifetime, satellite HCHO data are used widely as a proxy of volatile organic compounds (VOCs; please refer to Appendix A for abbreviations and acronyms), providing constraints on underlying emissions and chemistry. However, satellite HCHO products from different satellite sensors using different algorithms have received little validation so far. The accuracy and consistency of HCHO retrievals remain largely unclear. Here we develop a validation platform for satellite HCHO retrievals using in situ observations from 12 aircraft campaigns with a chemical transport model (GEOS-Chem) as the intercomparison method. Application to the NASA operational OMI HCHO product indicates negative biases (-44.5% to -21.7%) under high-HCHO conditions, while it indicates high biases (+66.1% to +112.1%) under low-HCHO conditions. Under both conditions, HCHO a priori vertical profiles are likely not the main driver of the biases. By providing quick assessment of systematic biases in satellite products over large domains, the platform facilitates, in an iterative process, optimization of retrieval settings and the minimization of retrieval biases. It is also complementary to localized validation efforts based on ground observations and aircraft spirals. © 2020 Author(s).
语种	英语
scopus关键词	aircraft; algorithm; formaldehyde; optimization; satellite data; sensor; vertical profile; volatile organic compound
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/247440
作者单位	Harvard-Smithsonian Center for Astrophysics, Cambridge, MA USA, United States; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China; Atmospheric Chemistry Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; NASA Langley Research Center, Hampton, VA, United States; Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO, United States; Atmospheric Chemistry and Dynamic Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Chemistry and Biochemistry, University of Montana, Missoula, MT, United States; School of Civil and Environmental Engineering or Earth, Georgia Institute of Technology, Atlanta, GA, United States; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States; John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, United States; Depar...
推荐引用方式 GB/T 7714	Zhu L.,González Abad G.,Nowlan C.R.,et al. Validation of satellite formaldehyde (HCHO) retrievals using observations from 12 aircraft campaigns[J],2020,20(20).
APA	Zhu L..,González Abad G..,Nowlan C.R..,Miller C.C..,Chance K..,...&Wolfe G.M..(2020).Validation of satellite formaldehyde (HCHO) retrievals using observations from 12 aircraft campaigns.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(20).
MLA	Zhu L.,et al."Validation of satellite formaldehyde (HCHO) retrievals using observations from 12 aircraft campaigns".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.20(2020).