Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-5483-2018 |
High-resolution inversion of OMI formaldehyde columns to quantify isoprene emission on ecosystem-relevant scales: application to the southeast US | |
Kaiser, Jennifer1; Jacob, Daniel J.1,2; Zhu, Lei1; Travis, Katherine R.1,12; Fisher, Jenny A.3,4; Abad, Gonzalo Gonzalez5; Zhang, Lin6; Zhang, Xuesong7; Fried, Alan8; Crounse, John D.9; St Clair, Jason M.9,13,14; Wisthaler, Armin10,11 | |
2018-04-23 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:8页码:5483-5497 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Australia; Peoples R China; Canada; Austria; Norway |
英文摘要 | Isoprene emissions from vegetation have a large effect on atmospheric chemistry and air quality. "Bottomup" isoprene emission inventories used in atmospheric models are based on limited vegetation information and uncertain land cover data, leading to potentially large errors. Satellite observations of atmospheric formaldehyde (HCHO), a high-yield isoprene oxidation product, provide "top-down" information to evaluate isoprene emission inventories through inverse analyses. Past inverse analyses have however been hampered by uncertainty in the HCHO satellite data, uncertainty in the time-and NOx-dependent yield of HCHO from isoprene oxidation, and coarse resolution of the atmospheric models used for the inversion. Here we demonstrate the ability to use HCHO satellite data from OMI in a high-resolution inversion to constrain isoprene emissions on ecosystem-relevant scales. The inversion uses the adjoint of the GEOS-Chem chemical transport model at 0.25 degrees x 0.3125 degrees horizon-tal resolution to interpret observations over the southeast US in August-September 2013. It takes advantage of concurrent NASA SEAC(4)RS aircraft observations of isoprene and its oxidation products including HCHO to validate the OMI HCHO data over the region, test the GEOS-Chem isoprene oxidation mechanism and NOx environment, and independently evaluate the inversion. This evaluation shows in particular that local model errors in NOx concentrations propagate to biases in inferring isoprene emissions from HCHO data. It is thus essential to correct model NOx biases, which was done here using SEAC(4)RS observations but can be done more generally using satellite NO2 data concurrently with HCHO. We find in our inversion that isoprene emissions from the widely used MEGAN v2.1 inventory are biased high over the southeast US by 40% on average, although the broad-scale distributions are correct including maximum emissions in Arkansas/Louisiana and high base emission factors in the oak-covered Ozarks of southeast Missouri. A particularly large discrepancy is in the Edwards Plateau of central Texas where MEGAN v2.1 is too high by a factor of 3, possibly reflecting errors in land cover. The lower isoprene emissions inferred from our inversion, when implemented into GEOS-Chem, decrease surface ozone over the southeast US by 1-3 ppb and decrease the isoprene contribution to organic aerosol from 40 to 20 %. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430738100001 |
WOS关键词 | FINE PARTICULATE MATTER ; ORGANIC AEROSOL ; AIR-QUALITY ; ATMOSPHERIC COMPOSITION ; SATELLITE-OBSERVATIONS ; AIRCRAFT OBSERVATIONS ; UNITED-STATES ; SURFACE OZONE ; NORTH-AMERICA ; NOX EMISSIONS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30771 |
专题 | 地球科学 |
作者单位 | 1.Harvard Univ, John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA; 2.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA; 3.Univ Wollongong, Sch Chem, Ctr Atmospher Chem, Wollongong, NSW, Australia; 4.Univ Wollongong, Sch Earth & Environm Sci, Wollongong, NSW, Australia; 5.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA; 6.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Lab Climate & Ocean Atmosphere Studies, Beijing 100871, Peoples R China; 7.Univ Toronto, Dept Phys, Toronto, ON, Canada; 8.Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO USA; 9.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA; 10.Univ Innsbruck, Inst Ion Phys & Appl Phys, Innsbruck, Austria; 11.Univ Oslo, Dept Chem, Oslo, Norway; 12.MIT, Dept Civil & Environm Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA; 13.NASA, Atmospher Chem & Dynam Lab, Goddard Space Flight Ctr, Greenbelt, MD USA; 14.Univ Maryland Baltimore Cty, Joint Ctr Earth Syst Technol, Baltimore, MD 21228 USA |
推荐引用方式 GB/T 7714 | Kaiser, Jennifer,Jacob, Daniel J.,Zhu, Lei,et al. High-resolution inversion of OMI formaldehyde columns to quantify isoprene emission on ecosystem-relevant scales: application to the southeast US[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(8):5483-5497. |
APA | Kaiser, Jennifer.,Jacob, Daniel J..,Zhu, Lei.,Travis, Katherine R..,Fisher, Jenny A..,...&Wisthaler, Armin.(2018).High-resolution inversion of OMI formaldehyde columns to quantify isoprene emission on ecosystem-relevant scales: application to the southeast US.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(8),5483-5497. |
MLA | Kaiser, Jennifer,et al."High-resolution inversion of OMI formaldehyde columns to quantify isoprene emission on ecosystem-relevant scales: application to the southeast US".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.8(2018):5483-5497. |
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