Satellite-derived constraints on the effect of drought stress on biogenic isoprene emissions in the southeastern US

Wang, Yuxuan; Lin, Nan; Li, Wei; Guenther, Alex; Lam, Joey C. Y.; Tai, Amos P. K.; Potosnak, Mark J.; Seco, Roger

doi:https://doi.org/10.5194/acp-22-14189-2022

Articles | Volume 22, issue 21

https://doi.org/10.5194/acp-22-14189-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-14189-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 21

Research article

|

07 Nov 2022

Research article |

| 07 Nov 2022

Satellite-derived constraints on the effect of drought stress on biogenic isoprene emissions in the southeastern US

Yuxuan Wang, Nan Lin, Wei Li, Alex Guenther, Joey C. Y. Lam, Amos P. K. Tai, Mark J. Potosnak, and Roger Seco

Supplement

https://doi.org/10.5194/acp-22-14189-2022-supplement

Data sets

Reprocessing the MODIS Leaf Area Index products for land surface and climate modelling (http://geoschemdata.wustl.edu/ExtData/HEMCO/Yuan_XLAI/v2021-06/) Hua Yuan, Yongjiu Dai, Zhiqiang Xiao, Duoying Ji, and Wei Shangguan https://doi.org/10.1016/j.rse.2011.01.001

Skill in forecasting extreme ozone pollution episodes with a global atmospheric chemistry model (https://aqs.epa.gov/aqsweb/documents/data_mart_welcome.html) J. L. Schnell, C. D. Holmes, A. Jangam, and M. J. Prather https://doi.org/10.5194/acp-14-7721-2014

OMI/Aura Formaldehyde (HCHO) Total Column Daily L3 Weighted Mean Global 0.1 deg Lat/Lon Grid V003 Kelly Chance https://doi.org/10.5067/Aura/OMI/DATA3010

OMI/Aura NO2 Cloud-Screened Total and Tropospheric Column L3 Global Gridded 0.25 degree x 0.25 degree V3 Nickolay A. Krotkov, Lok N. Lamsal, Sergey V. Marchenko, Edward A. Celarier, Eric J.Bucsela, William H. Swartz, Joanna Joiner, and the OMI core team https://doi.org/10.5067/Aura/OMI/DATA3007

The drought monitor (https://droughtmonitor.unl.edu/DmData/GISData.aspx) Mark Svoboda, Doug LeComte, Mike Hayes, Richard Heim, Karin Gleason, Jim Angel, Brad Rippey, Rich Tinker, Mike Palecki, David Stooksbury, David Miskus, and Scott Stephens https://doi.org/10.1175/1520-0477-83.8.1181

Model code and software

geoschem/geos-chem: GEOS-Chem 12.2.0 The International GEOS-Chem User Community https://doi.org/10.5281/zenodo.2572887

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Short summary

Drought can cause large changes in biogenic isoprene emissions. In situ field observations of isoprene emissions during droughts are confined by spatial coverage and, thus, provide limited constraints. We derived a drought stress factor based on satellite HCHO data for MEGAN2.1 in the GEOS-Chem model using water stress and temperature. This factor reduces the overestimation of isoprene emissions during severe droughts and improves the simulated O₃ and organic aerosol responses to droughts.