Probable Relationship between COVID-19, Pollutants and Meteorology: A Case Study at Santiago, Chile by Giovanni A. Salini, Patricio R. Pacheco, Eduardo Mera, María C. Parodi

“…Abstract We present here a study about the possible spread of covid-19 pandemic between human’s beings through aerosols contained in urban air polluted by respirable particulate matter and tropospheric ozone, as well as the incidence of local meteorology in an area with orographic basin characteristics and in a certain period of time. …”
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Effect of Lockdown due to COVID-19 on the Aerosol and Trace Gases Spatial Distribution over India and Adjoining Regions by Madineni Venkat Ratnam, Perumal Prasad, Sivan Thankamani Akhil Raj, Ibrahim Hoteit

“…Using Ozone Monitoring Instrument (OMI) satellite measurements, we found a 50–60% reduction in the mean tropospheric columnar Nitrogen dioxide (NO2) and planetary boundary layer Sulphur dioxide (SO2) levels over India and adjoining regions during the lockdown (25 March–7 April 2020) compared to the pre-lockdown periods (8–21 March 2020). …”
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Comparison of BTX Profiles and Their Mutagenicity Assessment at Two Sites of Agra, India by Vyoma Singla, Tripti Pachauri, Aparna Satsangi, K. Maharaj Kumari, Anita Lakhani

“…In the present study, the concentrations of three volatile organic compounds (VOCs), namely, acronym for benzene, toluene, and xylenes (BTX) were assessed because of their role in the tropospheric chemistry. Two representative sites, a roadside and a petrol pump, were chosen for sample collection. …”
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Nitrogen Dioxide (NO2) Level Changes during the Control of COVID-19 Pandemic in Thailand by Tin Ko Oo, Noppol Arunrat, Praeploy Kongsurakan, Sukanya Sereenonchai, Can Wang

“…The concentrations of tropospheric NO2 were extracted from the Sentinel-5P satellite data. …”
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Impact of Tibetan plateau warming amplification on the interannual variations in East Asia Summer precipitation by XiaoJing Jia, XinHai Chen, Wei Dong, Hao Ma, JingWen Ge, QiFeng Qian

“…Specifically, positive TA is linked to significant local tropospheric warming, which intensifies and eastward expands the South Asian High, creating a double-gyre meridional circulation over East Asia. …”
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Development of a Cost-effective Adsorption Dryer for High-quality Aerosol Sampling by Simonas Kecorius, Leizel Madueño, Susanne Sues, Josef Cyrys, Mario Lovrić, Mira Pöhlker, Kristina Plauškaitė, Lina Davulienė, Agnė Minderytė, Steigvilė Byčenkienė

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The Potential for Observing African Weather with GNSS Remote Sensing by Olalekan A. Isioye, Ludwig Combrinck, Joel O. Botai, Cilence Munghemezulu

“…Preliminary results of calculated zenith tropospheric delay (ZTD) from the African GNSS indicate spatial variability and diurnal dependence of ZTD. …”
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Retrieval of NO2 Columns by Exploiting MAX-DOAS Observations and Comparison with OMI and TROPOMI Data during the Time Period of 2015–2019 by Ahmad Iqbal, Naveed Ahmad, Hassan Mohy ud Din, Michel Van Roozendael, Muhammad Shehzaib Anjum, Muhammad Zeeshan Ali Khan, Muhammad Fahim Khokhar

“…Abstract Nitrogen dioxide (NO2)—a criteria major air pollutant, is of paramount importance due to its role in atmospheric chemistry and tropospheric ozone formation. Exposure to high concentrations of NO2 has been reported to cause various health issues in humans. …”
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Impacts of Strategic Mobility Restrictions Policies during 2020 COVID-19 Outbreak on Brazil’s Regional Air Quality by Anderson P. Rudke, Daniela S. de Almeida, Ronaldo A. Alves, Alexandra Beal, Leila D. Martins, Jorge A. Martins, Ricardo Hallak, Taciana T. de Almeida Albuquerque

“…In addition, spatial assessment of changes was evaluated using tropospheric NO2 column densities from the TROPOMI. Although there was no national regulation regarding mobility restrictions, the results show that the reduction in urban mobility was similar for all the analyzed states. …”
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Climatic Background and Prediction of Boreal Winter PM2.5 Concentrations in Hubei Province, China by Yuanyue Huang, Zijun Tang, Zhengxuan Yuan, Qianqian Zhang

“…The key findings are as follows: (1) Elevated DJF-HBPMC levels are associated with an upper-tropospheric northerly anomaly, a deepened southern branch trough (SBT) that facilitates southwesterly flow into central and eastern China, and a weakened East Asian winter monsoon (EAWM), which reduces the frequency and intensity of cold air intrusions. …”
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Impacts of Elevated Atmospheric CO2 and O3 on Paper Birch (Betula papyrifera): Reproductive Fitness by Joseph N. T. Darbah, Mark E. Kubiske, Neil Nelson, Elina Oksanen, Elina Vaapavuori, David F. Karnosky

“…Atmospheric CO2 and tropospheric O3 are rising in many regions of the world. …”
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Hemispheric asymmetry in recent stratospheric age of air changes by K. Dubé, S. Tegtmeier, F. Ploeger, K. A. Walker

“…The AoA is derived using observations of <span class="inline-formula">N₂O</span>, <span class="inline-formula">CH₄</span>, and CFC-12, all long-lived trace gases with tropospheric sources. We also consider CLaMS simulations driven with four different reanalyses (ERA5, ERA-Interim, JRA-55, MERRA-2). …”
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Under a not so white sky: visual impacts of stratospheric aerosol injection by Ansar Lemon, David W Keith, Steve Albers

“…Noticeability depends strongly on tropospheric aerosol optical depth (AOD) and the amount of SAI used. …”
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Comparing space-based to reported carbon monoxide emission estimates for Europe's iron and steel plants by G. Leguijt, G. Leguijt, J. D. Maasakkers, H. A. C. Denier van der Gon, A. J. Segers, T. Borsdorff, I. R. van der Velde, I. R. van der Velde, I. Aben, I. Aben

“…We perform analytical inversions to estimate emissions from 21 individual plants using observations from the TROPOspheric Monitoring Instrument (TROPOMI) for 2019. …”
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Impact of introducing electric vehicles on ground-level O₃ and PM_2.5 in the Greater Tokyo Area: yearly trends and the importance of changes in the urban heat... by H. Hata, N. Mizushima, T. Ihara

“…Even though previous studies have shown the effects of reducing vehicular emissions on the formation of tropospheric ozone (O<span class="inline-formula">₃</span>), no studies have evaluated the effect of decreasing anthropogenic heat, which is expected to mitigate urban heat island (UHI) effect, on air quality issues. …”
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Analysis of Radio Science Data from the KaT Instrument of the 3GM Experiment During JUICE’s Early Cruise Phase by Paolo Cappuccio, Andrea Sesta, Mauro Di Benedetto, Daniele Durante, Umberto De Filippis, Ivan di Stefano, Luciano Iess, Ruaraidh Mackenzie, Bernard Godard

“…In this test, the accuracy of range data at an integration time of 1s, particularly sensitive to the link signal-to-noise ratio, degraded to 13.6 cm, whilst the range-rate accuracy turned out to be better than 0.003 mm/s at 1000 s, thanks to the accurate tropospheric delay calibration system (TDCS) available at the Malargue station (inactive during NECP).…”
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Road Transport and Urban Mobility Greenhouse Gas Emissions Factor for Air Pollution Modeling in Burkina Faso by Issaka Abdou Razakou Kiribou, Tiga Neya, Bernard Nana, Kehinde Ogunjobi, Tizane Daho, Y․ Woro Gounkaou, Faith Mawia Muema, Dejene W. Sintayehu

“…With an average emission of 1.89 mol/m2, the satellite tropospheric nitrogen dioxide concentration is mostly affecting the Central Business Division (CBD) of Ouagadougou City. …”
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Comprehensive health risk assessment of urban ambient air pollution (PM2.5, NO2 and O3) in Ghana by Boansi Adu Ababio, Gerheart Winfred Ashong, Thomas Peprah Agyekum, Blessed Adjei Yeboah, Marian Asantewah Nkansah, Jonathan Nartey Hogarh, Michael Kweku Commeh, Edward Ebow Kwaansa-Ansah, Kwabena Dabie, Felix Adulley, Eldad Boansi, Lorenda Sarbeng, Birago Adu Ababio, Maame Serwaa Boapea, Nana Kwabena Oduro Darko, Meshach Kojo Appiah

“…Alarmingly, our findings revealed the yearly median PM2.5 concentrations (50.79–67.97 µg m−3) to be significantly higher than the WHO recommendation of 5 µg m−3. Tropospheric ozone concentrations (72.21–92.58 µg m−3 ) also exceeded the WHO annual standard of 60 µg m−3. …”
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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

“…<p>Volatile organic compounds (VOCs) play an important role in modulating the atmosphere's oxidizing capacity and affect tropospheric ozone, carbon monoxide, formaldehyde, and organic aerosol formation. …”
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Assessment of Impact of Meteorology and Precursor in Long-term Trends of PM and Ozone in a Tropical City by Christian Mark G. Salvador, Angeles D. Alindajao, Karen B. Burdeos, Mark Anthony M. Lavapiez, Jhon Robin Yee, Angel T. Bautista, Preciosa Corazon B. Pabroa, Rey Y. Capangpangan

“…The highest O3 concentration occurred during the summer months when photochemistry enhanced the formation of tropospheric O3. The increasing O3 trend was attributed to the contribution of anthropogenic VOCs (AVOCs), based on their ozone-forming potentials (OFPs). …”
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