DOI: 10.1029/2018JD028452
Scopus记录号: 2-s2.0-85050477143
论文题名: Estimator of Surface Ozone Using Formaldehyde and Carbon Monoxide Concentrations Over the Eastern United States in Summer
作者: Cheng Y. ; Wang Y. ; Zhang Y. ; Crawford J.H. ; Diskin G.S. ; Weinheimer A.J. ; Fried A.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 14 起始页码: 7642
结束页码: 7655
语种: 英语
英文关键词: carbon monoxide
; formaldehyde
; ozone
; ozone estimator
; regression slope
; satellite observation
英文摘要: Strong correlations of O3-CH2O, O3-CO and CO-CH2O were observed during the Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality (DISCOVER-AQ) aircraft experiment in July 2011 over the Washington-Baltimore area. The linear regression slopes of observed O3-CH2O, O3-CO, and CO-CH2O do not vary significantly with time (11 a.m. to 4 p.m.) or altitude in the boundary layer. These observed relationships are simulated well by a regional chemical transport model. Using tagged-tracer simulations, we find that biogenic isoprene oxidation makes the largest contribution to the regression slope of O3-CH2O across much of the eastern United States, providing a good indicator for O3 enhanced by biogenic isoprene oxidation. In contrast, the regression slope of O3-CO is controlled by both anthropogenic and biogenic emissions. Therefore, we use the CO-CH2O relationship to separate biogenic from anthropogenic contributions to CO. By combining these regressions, we can track the contributions to surface O3 by anthropogenic and biogenic factors and build a fast-response ozone estimator using near-surface CH2O and CO concentrations as inputs. We examine the quality of O3 estimator by increasing or decreasing anthropogenic emissions by up to 50%. The estimated O3 distribution is in reasonably good agreement with the full-model simulations (R2 > 0.77 in the range of −30% to +50% of anthropogenic emissions). The analysis provides the basis for using high-quality geostationary satellites with UV, thermal infrared, or near-infrared instruments for observing CH2O and CO to improve surface O3 distribution monitoring. The estimation model can also be applied to derive observation-derived regional metrics to evaluate and improve full-fledged 3-D air quality models. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113508
Appears in Collections: 气候减缓与适应
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作者单位: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States; Now at the School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States; NASA Langley Research Center, Hampton, VA, United States; Atmospheric Chemistry Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, CO, United States
Recommended Citation:
Cheng Y.,Wang Y.,Zhang Y.,et al. Estimator of Surface Ozone Using Formaldehyde and Carbon Monoxide Concentrations Over the Eastern United States in Summer[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(14)