Search Results - "Michalski, Greg"

Summertime diurnal variations in the isotopic composition of atmospheric nitrogen dioxide at a small midwestern United States city by Walters, Wendell W., Fang, Huan, Michalski, Greg

“…The nitrogen and oxygen stable isotopes (δ15N & δ18O) of nitrogen oxides (NOx = nitric oxide (NO) + nitrogen dioxide (NO2)) may be a useful tool for…”
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Important contributions of non-fossil fuel nitrogen oxides emissions by Song, Wei, Liu, Xue-Yan, Hu, Chao-Chen, Chen, Guan-Yi, Liu, Xue-Jun, Walters, Wendell W., Michalski, Greg, Liu, Cong-Qiang

“…Since the industrial revolution, it has been assumed that fossil-fuel combustions dominate increasing nitrogen oxide (NO x ) emissions. However, it remains…”
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Isotopic evidence for enhanced fossil fuel sources of aerosol ammonium in the urban atmosphere by Pan, Yuepeng, Tian, Shili, Liu, Dongwei, Fang, Yunting, Zhu, Xiaying, Gao, Meng, Gao, Jian, Michalski, Greg, Wang, Yuesi

“…The sources of aerosol ammonium (NH4+) are of interest because of the potential of NH4+ to impact the Earth's radiative balance, as well as human health and…”
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Nitrogen Isotope Composition of Thermally Produced NOx from Various Fossil-Fuel Combustion Sources by Walters, Wendell W, Tharp, Bruce D, Fang, Huan, Kozak, Brian J, Michalski, Greg

“…The nitrogen stable isotope composition of NOx (δ(15)N-NOx) may be a useful indicator for NOx source partitioning, which would help constrain NOx source…”
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Atmospheric deposition across the Atacama Desert, Chile: Compositions, source distributions, and interannual comparisons by Li, Jianghanyang, Wang, Fan, Michalski, Greg, Wilkins, Benjamin

“…Hyper-arid areas such as the Atacama Desert accumulated significant amounts of insoluble dust and soluble salts from the atmosphere, providing minable salt…”
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Significant contributions of combustion-related sources to ammonia emissions by Chen, Zhi-Li, Song, Wei, Hu, Chao-Chen, Liu, Xue-Jun, Chen, Guan-Yi, Walters, Wendell W., Michalski, Greg, Liu, Cong-Qiang, Fowler, David, Liu, Xue-Yan

“…Atmospheric ammonia (NH 3 ) and ammonium (NH 4 + ) can substantially influence air quality, ecosystems, and climate. NH 3 volatilization from fertilizers and…”
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Reinterpreting Precipitation Stable Water Isotope Variability in the Andean Western Cordillera Due To Sub‐Seasonal Moisture Source Changes and Sub‐Cloud Evaporation by Welp, Lisa R., Olson, Elizabeth J., Valdivia, Adriana Larrea, Larico, Juan Reyes, Arhuire, Efraín Palma, Paredes, Lino Morales, DeGraw, Jonathan T., Michalski, Greg M.

“…Precipitation in the arid Central Andean Western Cordillera is strongly sensitive to large‐scale atmospheric circulation patterns which transport moisture from…”
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Isotopic evidence for the occurrence of biological nitrification and nitrogen deposition processing in forest canopies by Guerrieri, Rossella, Vanguelova, Elena I., Michalski, Greg, Heaton, Timothy H. E., Mencuccini, Maurizio

“…This study examines the role of tree canopies in processing atmospheric nitrogen (Ndₑₚ) for four forests in the United Kingdom subjected to different Ndₑₚ:…”
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Investigating Source Contributions of Size‐Aggregated Aerosols Collected in Southern Ocean and Baring Head, New Zealand Using Sulfur Isotopes by Li, Jianghanyang, Michalski, Greg, Davy, Perry, Harvey, Mike, Katzman, Tanya, Wilkins, Benjamin

“…Marine sulfate aerosols in the Southern Ocean are critical to the global radiation balance, yet the sources of sulfate and their seasonal variations are…”
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Oxygen and nitrogen isotopic composition of nitrate in commercial fertilizers, nitric acid, and reagent salts by Michalski, Greg, Kolanowski, Michelle, Riha, Krystin M.

“…Nitrate is a key component of synthetic fertilizers that can be beneficial to crop production in agro-ecosystems, but can also cause damage to natural…”
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Sources and Transport of Nitrogen in Arid Urban Watersheds by Hale, Rebecca L, Turnbull, Laura, Earl, Stevan, Grimm, Nancy, Riha, Krystin, Michalski, Greg, Lohse, Kathleen A, Childers, Daniel

“…Urban watersheds are often sources of nitrogen (N) to downstream systems, contributing to poor water quality. However, it is unknown which components (e.g.,…”
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Geochemical, isotopic, and mineralogical constraints on atmospheric deposition in the hyper-arid Atacama Desert, Chile by Wang, Fan, Michalski, Greg, Seo, Ji-hye, Ge, Wensheng

“…Modern atmospheric deposition across the Atacama was collected by an array of dust traps that stretched from the Pacific coast to the Andean altiplano, and the…”
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Oxygen-17 anomaly in soil nitrate: A new precipitation proxy for desert landscapes by Wang, Fan, Ge, Wensheng, Luo, Hao, Seo, Ji-Hye, Michalski, Greg

“…The nitrogen cycle in desert soil ecosystems is particularly sensitive to changes in precipitation, even of relatively small magnitude and short duration,…”
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High Atmospheric Nitrate Inputs and Nitrogen Turnover in Semi-arid Urban Catchments by Riha, Krystin M, Michalski, Greg, Gallo, Erika L, Lohse, Kathleen A, Brooks, Paul D, Meixner, Tom

“…The influx of atmospheric nitrogen to soils and surfaces in arid environments is of growing concern due to increased N emissions and N usage associated with…”
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Multiyear Measurements on Δ17O of Stream Nitrate Indicate High Nitrate Production in a Temperate Forest by Huang, Shaonan, Wang, Fan, Elliott, Emily M, Zhu, Feifei, Zhu, Weixing, Koba, Keisuke, Yu, Zhongjie, Hobbie, Erik A, Michalski, Greg, Kang, Ronghua, Wang, Anzhi, Zhu, Jiaojun, Fu, Shenglei, Fang, Yunting

“…Nitrification is a crucial step in ecosystem nitrogen (N) cycling, but scaling up from plot-based measurements of gross nitrification to catchments is…”
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Long term atmospheric deposition as the source of nitrate and other salts in the Atacama Desert, Chile: New evidence from mass-independent oxygen isotopic compositions by Michalski, Greg, Böhlke, J.K., Thiemens, Mark

“…Isotopic analysis of nitrate and sulfate minerals from the nitrate ore fields of the Atacama Desert in northern Chile has shown anomalous 17O enrichments in…”
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In Their Own Words: A Text Analytics Investigation of College Course Attrition by Michalski, Greg V.

“…Excessive course attrition is costly to both the student and the institution. While most institutions have systems to quantify and report the numbers, far less…”
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A diurnal story of Δ17O(NO3−) in urban Nanjing and its implication for nitrate aerosol formation by Zhang, Yan-Lin, Zhang, Wenqi, Fan, Mei-Yi, Li, Jianghanyang, Fang, Huan, Cao, Fang, Lin, Yu-Chi, Wilkins, Benjamin Paul, Liu, Xiaoyan, Bao, Mengying, Hong, Yihang, Michalski, Greg

“…Inorganic nitrate production is critical in atmospheric chemistry that reflects the oxidation capacity and the acidity of the atmosphere. Here we use the…”
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role of symmetry in the mass independent isotope effect in ozone by Michalski, Greg, Bhattacharya, S.K

“…Understanding the internal distribution of "anomalous" isotope enrichments has important implications for validating theoretical postulates on the origin of…”
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Purification procedure for δ15N, δ18O, Δ17O analysis of nitrate by Michalski, Greg

“…A solid phase extraction technique has been developed for purification of nitrate in environmental solutions for isotopic analysis. Three materials, C18,…”
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