| Nitrogen Stable Isotope Composition (δ15N) of Vehicle-Emitted NOx WW Walters, SR Goodwin, G Michalski Environmental science & technology 49 (4), 2278-2285, 2015 | 165 | 2015 |
| Nitrogen Isotope Composition of Thermally Produced NOx from Various Fossil-Fuel Combustion Sources WW Walters, BD Tharp, H Fang, BJ Kozak, G Michalski Environmental science & technology 49 (19), 11363-11371, 2015 | 128 | 2015 |
| Theoretical calculation of nitrogen isotope equilibrium exchange fractionation factors for various NOy molecules WW Walters, G Michalski Geochimica et Cosmochimica Acta 164, 284-297, 2015 | 115 | 2015 |
| Theoretical calculation of oxygen equilibrium isotope fractionation factors involving various NOy molecules, OH, and H2O and its implications for isotope variations in … WW Walters, G Michalski Geochimica et Cosmochimica Acta 191, 89-101, 2016 | 100 | 2016 |
| Nitrogen isotope exchange between NO and NO2 and its implications for δ15N variations in tropospheric NOx and atmospheric nitrate WW Walters, DS Simonini, G Michalski Geophysical Research Letters 43 (1), 440-448, 2016 | 85 | 2016 |
| Important contributions of non-fossil fuel nitrogen oxides emissions W Song, XY Liu, CC Hu, GY Chen, XJ Liu, WW Walters, G Michalski, ... Nature communications 12 (1), 243, 2021 | 81 | 2021 |
| Substantial nitrogen oxides emission reduction from China due to COVID-19 and its impact on surface ozone and aerosol pollution Q Zhang, Y Pan, Y He, WW Walters, Q Ni, X Liu, G Xu, J Shao, C Jiang Science of the Total Environment 753, 142238, 2021 | 73 | 2021 |
| Theoretical phase resolved ammonia–ammonium nitrogen equilibrium isotope exchange fractionations: applications for tracking atmospheric ammonia gas-to-particle conversion WW Walters, J Chai, MG Hastings ACS earth and space chemistry 3 (1), 79-89, 2018 | 64 | 2018 |
| Global patterns of nitrate isotope composition in rivers and adjacent aquifers reveal reactive nitrogen cascading I Matiatos, LI Wassenaar, LR Monteiro, JJ Venkiteswaran, DC Gooddy, ... Communications Earth & Environment 2 (1), 52, 2021 | 63 | 2021 |
| Systematic low bias of passive samplers in characterizing nitrogen isotopic composition of atmospheric ammonia Y Pan, M Gu, L Song, S Tian, D Wu, WW Walters, X Yu, X Lü, X Ni, ... Atmospheric research 243, 105018, 2020 | 46 | 2020 |
| Revisiting the concentration observations and source apportionment of atmospheric ammonia Y Pan, M Gu, Y He, D Wu, C Liu, L Song, S Tian, X Lü, Y Sun, T Song, ... Advances in Atmospheric Sciences 37, 933-938, 2020 | 41 | 2020 |
| Vehicular emissions enhanced ammonia concentrations in winter mornings: Insights from diurnal nitrogen isotopic signatures M Gu, Y Pan, WW Walters, Q Sun, L Song, Y Wang, Y Xue, Y Fang Environmental Science & Technology 56 (3), 1578-1585, 2022 | 39 | 2022 |
| Characterizing the spatiotemporal nitrogen stable isotopic composition of ammonia in vehicle plumes WW Walters, L Song, J Chai, Y Fang, N Colombi, MG Hastings Atmospheric Chemistry and Physics 20 (19), 11551-11567, 2020 | 38 | 2020 |
| Nitrate isotopic composition in precipitation at a Chinese megacity: Seasonal variations, atmospheric processes, and implications for sources Z Li, WW Walters, MG Hastings, Y Zhang, L Song, D Liu, W Zhang, Y Pan, ... Earth and Space Science 6 (11), 2200-2213, 2019 | 38 | 2019 |
| Summertime diurnal variations in the isotopic composition of atmospheric nitrogen dioxide at a small midwestern United States city WW Walters, H Fang, G Michalski Atmospheric environment 179, 1-11, 2018 | 38 | 2018 |
| Collection of ammonia for high time-resolved nitrogen isotopic characterization utilizing an acid-coated honeycomb denuder WW Walters, MG Hastings Analytical chemistry 90 (13), 8051-8057, 2018 | 36 | 2018 |
| Is fertilization the dominant source of ammonia in the urban atmosphere? M Gu, Y Pan, Q Sun, WW Walters, L Song, Y Fang Science of the Total Environment 838, 155890, 2022 | 33 | 2022 |
| Assessing the seasonal dynamics of nitrate and sulfate aerosols at the South Pole utilizing stable isotopes WW Walters, G Michalski, JK Böhlke, B Alexander, J Savarino, ... Journal of Geophysical Research: Atmospheres 124 (14), 8161-8177, 2019 | 33 | 2019 |
| Significant contributions of combustion-related sources to ammonia emissions ZL Chen, W Song, CC Hu, XJ Liu, GY Chen, WW Walters, G Michalski, ... Nature Communications 13 (1), 7710, 2022 | 28 | 2022 |
| Isotopic evidence that recent agriculture overprints climate variability in nitrogen deposition to the Tibetan Plateau Z Li, MG Hastings, WW Walters, L Tian, SC Clemens, L Song, L Shao, ... Environment international 138, 105614, 2020 | 24 | 2020 |
