Publication Abstracts
Chua et al. 2023
, V. Naik, and L.W. Horowitz, 2023: Exploring the drivers of tropospheric hydroxyl radical trends in the Geophysical Fluid Dynamics Laboratory AM4.1 atmospheric chemistry-climate model. Atmos. Chem. Phys., 23, no. 8, 4955-4975, doi:10.5194/acp-23-4955-2023.
We explore the sensitivity of modeled tropospheric hydroxyl (OH) concentration trends to meteorology and near-term climate forcers (NTCFs), namely methane (CH4) nitrogen oxides carbon monoxide (CO), non-methane volatile organic compounds (NMVOCs) and ozone-depleting substances (ODSs), using the Geophysical Fluid Dynamics Laboratory (GFDL)'s atmospheric chemistry-climate model, the Atmospheric Model version 4.1 (AM4.1), driven by emissions inventories developed for the Sixth Coupled Model Intercomparison Project (CMIP6) and forced by observed sea surface temperatures and sea ice prepared in support of the CMIP6 Atmospheric Model Intercomparison Project (AMIP) simulations. We find that the modeled tropospheric air-mass-weighted mean [OH] has increased by ∼5% globally from 1980 to 2014. We find that NOx emissions and CH4 concentrations dominate the modeled global trend, while CO emissions and meteorology were also important in driving regional trends. Modeled tropospheric NO2 column trends are largely consistent with those retrieved from the Ozone Monitoring Instrument (OMI) satellite, but simulated CO column trends generally overestimate those retrieved from the Measurements of Pollution in The Troposphere (MOPITT) satellite, possibly reflecting biases in input anthropogenic emission inventories, especially over China and South Asia.
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BibTeX Citation
@article{ch08610m,
author={Chua, G. and Naik, V. and Horowitz, L. W.},
title={Exploring the drivers of tropospheric hydroxyl radical trends in the Geophysical Fluid Dynamics Laboratory AM4.1 atmospheric chemistry-climate model},
year={2023},
journal={Atmospheric Chemistry and Physics},
volume={23},
number={8},
pages={4955--4975},
doi={10.5194/acp-23-4955-2023},
}
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RIS Citation
TY - JOUR ID - ch08610m AU - Chua, G. AU - Naik, V. AU - Horowitz, L. W. PY - 2023 TI - Exploring the drivers of tropospheric hydroxyl radical trends in the Geophysical Fluid Dynamics Laboratory AM4.1 atmospheric chemistry-climate model JA - Atmos. Chem. Phys. JO - Atmospheric Chemistry and Physics VL - 23 IS - 8 SP - 4955 EP - 4975 DO - 10.5194/acp-23-4955-2023 ER -
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