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. …”
Get full text

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. …”
Get full text

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. …”
Get full text

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. …”
Get full text

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). …”
Get full text

Mechanistic insights and atmospheric implications of the degradation reaction of 3-methoxy-1-propanol by reaction with hydroxyl radicals and identification of the end products in t... by Abolfazl Shiroudi, Theo Kurtén, Jacek Czub

“…This strong agreement confirms the reliability of the computational approach, which provides insights into the atmospheric reactivity and degradation pathways of 3M1P. The tropospheric lifetime of 3M1P is around 15 h, indicating rapid degradation in the atmosphere, potentially contributing to photochemical smog formation. …”
Get full text

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. …”
Get full text

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. …”
Get full text

Cancellation of cloud shadow effects in the absorbing aerosol index retrieval algorithm of TROPOMI by V. J. H. Trees, V. J. H. Trees, P. Wang, P. Stammes, L. G. Tilstra, D. P. Donovan, D. P. Donovan, A. P. Siebesma

“…<p>Cloud shadows can be detected in the radiance measurements of the TROPOspheric Monitoring Instrument (TROPOMI) on board the Sentinel-5P satellite due to its high spatial resolution and could possibly affect its air quality products. …”
Get full text

Western disturbances and climate variability: a review of recent developments by K. M. R. Hunt, K. M. R. Hunt, J.-P. Baudouin, A. G. Turner, A. G. Turner, A. P. Dimri, A. P. Dimri, G. Jeelani, Pooja, R. Chattopadhyay, R. Chattopadhyay, F. Cannon, T. Arulalan, T. Arulalan, M. S. Shekhar, T. P. Sabin, E. Palazzi

“…Manifesting as upper-level troughs often associated with a lower-tropospheric low over western or northern India, they share some dynamical features with extratropical cyclones. …”
Get full text

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. …”
Get full text

The Investigation of Global Real-Time ZTD Estimation from GPS/Galileo PPP Based on Galileo High Accuracy Service by Xin Chen, Xuhai Yang, Yulong Ge, Yanlong Liu, Hui Lei

“…Utilizing real-time precise point positioning (PPP) technology is an effective approach for obtaining high-precision zenith tropospheric delay (ZTD). Without relying on the terrestrial internet, Galileo high accuracy service (HAS) can provide precise orbit and precise clock products for the world. …”
Get full text

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).…”
Get full text

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. …”
Get full text

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. …”
Get full text

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. …”
Get full text

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). …”
Get full text

A satellite-based analysis of semi-direct effects of biomass burning aerosols on fog and low-cloud dissipation in the Namib Desert by A. Mass, A. Mass, H. Andersen, H. Andersen, J. Cermak, J. Cermak, P. Formenti, E. Pauli, E. Pauli, J. Quinting

“…BBAs are transported to the Namib along moist free-tropospheric air by a large-scale anticyclonic recirculation pattern. …”
Get full text

The greenhouse gas observation mission with Global Observing SATellite for Greenhouse gases and Water cycle (GOSAT-GW): objectives, conceptual framework and scientific contribution... by Hiroshi Tanimoto, Tsuneo Matsunaga, Yu Someya, Tamaki Fujinawa, Hirofumi Ohyama, Isamu Morino, Hisashi Yashiro, Takafumi Sugita, Satoshi Inomata, Astrid Müller, Tazu Saeki, Yukio Yoshida, Yosuke Niwa, Makoto Saito, Hibiki Noda, Yousuke Yamashita, Kohei Ikeda, Nobuko Saigusa, Toshinobu Machida, Matthias Max Frey, Hyunkwang Lim, Priyanka Srivastava, Yoshitaka Jin, Atsushi Shimizu, Tomoaki Nishizawa, Yugo Kanaya, Takashi Sekiya, Prabir Patra, Masayuki Takigawa, Jagat Bisht, Yasko Kasai, Tomohiro O. Sato

“…It aims to retrieve the column-averaged dry-air mole fractions of CO2 and CH4 (denoted as XCO2 and XCH4, respectively), as well as the vertical column density of tropospheric NO2. The TANSO-3 sensor onboard GOSAT-GW will utilize the wavelength bands of 0.45, 0.76, and 1.61 µm for NO2, O2, and CO2 and CH4 retrievals, respectively. …”
Get full text

Analysis of the long-range transport of the volcanic plume from the 2021 Tajogaite/Cumbre Vieja eruption to Europe using TROPOMI and ground-based measurements by P. Hedelt, J. Reichardt, F. Lauermann, B. Weiß, N. Theys, A. Redondas, A. Barreto, O. Garcia, D. Loyola

“…This study provides an analysis of <span class="inline-formula">SO₂</span> vertical column density (VCD) and layer height (LH) measurements of the volcanic plume obtained with Sentinel-5 Precursor/TROPOspheric Monitoring Instrument (TROPOMI), which are compared to the observations at several stations across the Canary Islands. …”
Get full text