Publication Abstracts

Naimark et al. 2021

Naimark, J.G., A.M. Fiore, X. Jin, Y. Wang, E. Klovenski, and C. Braneon, 2021: Evaluating drought responses of surface ozone precursor proxies: Variations with land cover type, precipitation, and temperature. Geophys. Res. Lett., 48, no. 7, e2020GL091520, doi:10.1029/2020GL091520.

Prior work suggests drought exacerbates U.S. air quality by increasing surface ozone concentrations. We analyze 2005-2015 tropospheric column concentrations of two trace gases that serve as proxies for surface ozone precursors retrieved from the OMI/Aura satellite: nitrogen dioxide (ΩNO2; NOx proxy) and formaldehyde (ΩHCHO; VOC proxy). We find 3.5% and 7.7% summer drought enhancements for ΩNO2 and ΩHCHO, respectively, corroborating signals previously extracted from ground-level observations. When we subset by land cover type (using MCD12Q1) and isolate the influences of precipitation and temperature on drought, we find the strongest ΩHCHO drought enhancement (10%) in the woody savannas of the Southeast US. This increase likely reflects biogenic VOC emissions and occurs independently with both high temperature and low precipitation. The strongest ΩNO2 drought enhancement (6.0%) occurs over Midwest US croplands and grasslands, which we infer to reflect the sensitivity of soil NOx emissions to temperature.

Export citation: [ BibTeX ] [ RIS ]

BibTeX Citation

@article{na06400u,
  author={Naimark, J. G. and Fiore, A. M. and Jin, X. and Wang, Y. and Klovenski, E. and Braneon, C.},
  title={Evaluating drought responses of surface ozone precursor proxies: Variations with land cover type, precipitation, and temperature},
  year={2021},
  journal={Geophys. Res. Lett.},
  volume={48},
  number={7},
  pages={e2020GL091520},
  doi={10.1029/2020GL091520},
}

[ Close ]

RIS Citation

TY  - JOUR
ID  - na06400u
AU  - Naimark, J. G.
AU  - Fiore, A. M.
AU  - Jin, X.
AU  - Wang, Y.
AU  - Klovenski, E.
AU  - Braneon, C.
PY  - 2021
TI  - Evaluating drought responses of surface ozone precursor proxies: Variations with land cover type, precipitation, and temperature
JA  - Geophys. Res. Lett.
VL  - 48
IS  - 7
SP  - e2020GL091520
DO  - 10.1029/2020GL091520
ER  -

[ Close ]

• Return to 2021 Publications

• Return to Publications Homepage