Estimator of Surface Ozone Using Formaldehyde and Carbon Monoxide Concentrations Over the Eastern United States in Summer

被引:12
|
作者
Cheng, Ye [1 ]
Wang, Yuhang [1 ]
Zhang, Yuzhong [1 ,2 ]
Crawford, James H. [3 ]
Diskin, Glenn S. [3 ]
Weinheimer, Andrew J. [4 ]
Fried, Alan [5 ]
机构
[1] Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA
[2] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA
[3] NASA, Langley Res Ctr, Hampton, VA 23665 USA
[4] Natl Ctr Atmospher Res, Atmospher Chem Observat & Modeling Lab, POB 3000, Boulder, CO 80307 USA
[5] Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA
关键词
TRACE GAS-COMPOSITION; NORTH-ATLANTIC OCEAN; TROPOSPHERIC OZONE; AIR-QUALITY; SATELLITE-OBSERVATIONS; CONVECTIVE-TRANSPORT; MIDLATITUDE CYCLONES; POLLUTION TRANSPORT; TEMPORAL VARIATIONS; ISOPRENE EMISSIONS;
D O I
10.1029/2018JD028452
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
Strong correlations of O-3-CH2O, O-3-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 O-3-CH2O, O-3-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 O-3-CH2O across much of the eastern United States, providing a good indicator for O-3 enhanced by biogenic isoprene oxidation. In contrast, the regression slope of O-3-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 O-3 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 O-3 estimator by increasing or decreasing anthropogenic emissions by up to 50%. The estimated O-3 distribution is in reasonably good agreement with the full-model simulations (R-2 > 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 O-3 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.
引用
收藏
页码:7642 / 7655
页数:14
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