Formation and Evolution Mechanisms of Severe Haze Pollution in the Sichuan Basin, Southwest China by Xianyu Yang, Yaqiong Lu, Xinsheng Zhu, Jianjun He, Qi Jiang, Kai Wu, Haolin Wang, Xiaoling Zhang, Shigong Wang

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Interior Convection Regime, Host Star Luminosity, and Predicted Atmospheric CO2 Abundance in Terrestrial Exoplanets by Antonin Affholder, Stéphane Mazevet, Boris Sauterey, Dániel Apai, Régis Ferrière

“…We use end-member models of volcanic outgassing and crust weathering for the stagnant- and mobile-lid convection regimes, which we couple to models of atmospheric chemistry and climate and ocean chemistry to simulate the atmospheric evolution of these worlds in the HZ. …”
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Study on the Influence of Regional Transportation on PM2.5 Based on the RAMS-CMAQ Model in Weihai, a Typical Coastal City of Northern China by Wentao Ning, Zhiwen Xing, Min Wei, Mingyan Li, Meigen Zhang, Houfeng Liu

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Unexpected Impact of COVID-19 Lockdown on the Air Quality in the Metro Atlanta, USA Using Ground-based and Satellite Observations by Guanyu Huang, Reyla Ponder, Amber Bond, Hailey Brim, Akua Temeng, Aaron R. Naeger, Lei Zhu

“…Further studies are needed to understand the impacts of reduced human activities on atmospheric chemistry. We also found TROPOMI and ground measurements have disagreements on NO2 reductions, as collocated TROPOMI observations revealed ~23% and ~21% reductions of tropospheric NO2 columns over NR and UA stations, respectively. …”
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Multi-model Evaluation and Bayesian Model Averaging in Quantitative Air Quality Forecasting in Central China by Haixia Qi, Shuangliang Ma, Jing Chen, Junping Sun, Lingling Wang, Nan Wang, Weisi Wang, Xiefei Zhi, Hao Yang

“…We evaluated the concentrations of six pollutants in Henan Province predicted by three air quality models—the China Meteorological Administration Unified Atmospheric Chemistry Environment (CUACE) model, the Nested Air Quality Prediction (NAQP) model and the Community Multiscale Air Quality (CMAQ) model. …”
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Spatiotemporal Variations of Particulate Matter and their Association with Criteria Pollutants and Meteorology in Malaysia by Anis Asma Ahmad Mohtar, Mohd Talib Latif, Doreena Dominick, Maggie Chel Gee Ooi, Azliyana Azhari, Nor Hafizah Baharudin, Norfazrin Mohd Hanif, Jing Xiang Chung, Liew Juneng

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Potential and costs required for methane removal to compete with BECCS as a mitigation option by Yann Gaucher, Katsumasa Tanaka, Daniel J A Johansson, Olivier Boucher, Philippe Ciais

“…Using the ACC2-GET integrated carbon cycle, atmospheric chemistry, climate and energy system model, we consider a generic MR technology characterized by a given unit cost and a maximal removal potential. …”
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Global decadal measurements of methanol, ethene, ethyne, and HCN from the Cross-track Infrared Sounder by K. C. Wells, D. B. Millet, J. F. Brewer, V. H. Payne, K. E. Cady-Pereira, R. Pernak, S. Kulawik, S. Kulawik, C. Vigouroux, N. Jones, E. Mahieu, M. Makarova, T. Nagahama, I. Ortega, M. Palm, K. Strong, M. Schneider, D. Smale, R. Sussmann, M. Zhou

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Response of South Asia PM2.5 pollution to ammonia emission changes and associated impacts on human health by Yuanlin Wang, Eiko Nemitz, Samuel J. Tomlinson, Edward J. Carnell, Liquan Yao, Janice Scheffler, Tomas Liska, Clare Pearson, Ulrike Dragosits, Chandra Venkataraman, Srinidhi Balasubramanian, Rachel Beck, Mark A. Sutton, Massimo Vieno

“…Using an advanced regional atmospheric chemistry and transport modelling system (WRF-EMEP) with a new estimate of anthropogenic NH3 emissions inputs, we estimate the influence of agricultural NH3 emissions on surface PM2.5 in South Asia and evaluate the health impacts and the economic losses attributable to PM2.5 in 2018. …”
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Accurate space-based NO_<i>x</i> emission estimates with the flux divergence approach require fine-scale model information on local oxidation chemistry and profile shapes by F. Cifuentes, F. Cifuentes, H. Eskes, E. Dammers, E. Dammers, C. Bryan, F. Boersma, F. Boersma

“…An attractive aspect of the FDA is that the method simplifies three-dimensional atmospheric chemistry and transport processes into a two-dimensional (longitude–latitude) steady-state continuity equation for columns that balances local <span class="inline-formula">NO_<i>x</i></span> emissions with the net outflow and chemical loss of <span class="inline-formula">NO_<i>x</i></span>. …”
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Towards a high-quality in situ observation network for oxygenated volatile organic compounds (OVOCs) in Europe: transferring metrological traceability to the field by M. Iturrate-Garcia, T. Salameh, P. Schlauri, A. Baldan, M. K. Vollmer, E. Stratigou, S. Dusanter, J. Li, S. Persijn, A. Claude, R. Holzinger, C. Sutour, T. Macé, Y. Elshorbany, A. Ackermann, C. Pascale, S. Reimann

“…Active collaboration among the metrological, meteorological and atmospheric chemistry monitoring communities is needed to tackle the challenges of OVOC monitoring, such as the lack of stable and SI-traceable calibration standards (i.e. …”
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