Search Results - "Li, Hugh Z."

Saskatchewan’s oil and gas methane: how have underestimated emissions in Canada impacted progress toward 2025 climate goals? by Seymour, Scott P, Li, Hugh Z, MacKay, Katlyn, Kang, Mary, Xie, Donglai

“…Abstract Canada has set ambitious methane emission reduction targets for its oil and gas industry, and recently, the province of Saskatchewan—Canada’s second…”
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A national estimate of U.S. underground natural gas storage incident emissions by Li, Hugh Z, Saint-Vincent, Patricia M B, Mundia-Howe, Mumbi, Pekney, Natalie J

“…Abstract The 2015 Aliso Canyon storage well blowout was widely reported as the worst natural gas leak in the history of the United States (U.S.) and released…”
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Spatial Variability of Sources and Mixing State of Atmospheric Particles in a Metropolitan Area by Ye, Qing, Gu, Peishi, Li, Hugh Z, Robinson, Ellis S, Lipsky, Eric, Kaltsonoudis, Christos, Lee, Alex K.Y, Apte, Joshua S, Robinson, Allen L, Sullivan, Ryan C, Presto, Albert A, Donahue, Neil M

“…Characterizing intracity variations of atmospheric particulate matter has mostly relied on fixed-site monitoring and quantifying variability in terms of…”
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A measurement-based upstream oil and gas methane inventory for Alberta, Canada reveals higher emissions and different sources than official estimates by Conrad, Bradley M., Tyner, David R., Li, Hugh Z., Xie, Donglai, Johnson, Matthew R.

“…Abstract Mitigation actions and regulations to meet critical 2030 methane reduction targets under the Global Methane Pledge are hampered by uncertainty in true…”
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Gathering Pipeline Methane Emissions in Utica Shale Using an Unmanned Aerial Vehicle and Ground-Based Mobile Sampling by Li, Hugh Z., Mundia-Howe, Mumbi, Reeder, Matthew D., Pekney, Natalie J.

“…The United States Environmental Protection Agency Greenhouse Gas Inventory only recently updated the emission factors of natural gas gathering pipelines in…”
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Improving Correlations between Land Use and Air Pollutant Concentrations Using Wavelet Analysis: Insights from a Low-cost Sensor Network by Zimmerman, Naomi, Li, Hugh Z., Ellis, Aja, Hauryliuk, Aliaksei, Robinson, Ellis S., Gu, Peishi, Shah, Rishabh U., Ye, Qing, Snell, Luke, Subramanian, R., Robinson, Allen L., Apte, Joshua S., Presto, Albert A.

“…City-wide air pollution assessments have typically relied on a small number of widely separated regulatory monitoring sites or land use regression (LUR) models…”
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A Comprehensive Integration and Synthesis of Methane Emissions from Canada’s Oil and Gas Value Chain by MacKay, Katlyn, Seymour, Scott P., Li, Hugh Z., Zavala-Araiza, Daniel, Xie, Donglai

“…Methane emissions from the global oil and gas value chain are a major contributor to climate change, and their mitigation could avoid 0.1 °C of warming by…”
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Restaurant Impacts on Outdoor Air Quality: Elevated Organic Aerosol Mass from Restaurant Cooking with Neighborhood-Scale Plume Extents by Robinson, Ellis Shipley, Gu, Peishi, Ye, Qing, Li, Hugh Z, Shah, Rishabh Urvesh, Apte, Joshua Schulz, Robinson, Allen L, Presto, Albert A

“…Organic aerosol (OA) is a major component of fine particulate matter (PM2.5) in urban environments. We performed in-motion ambient sampling from a mobile…”
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Application of mobile sampling to investigate spatial variation in fine particle composition by Li, Hugh Z., Dallmann, Timothy R., Gu, Peishi, Presto, Albert A.

“…Long-term exposure to particulate matter (PM) is a major contributor to air pollution related deaths. Evidence indicates that metals play an important role in…”
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Intracity Variability of Particulate Matter Exposure Is Driven by Carbonaceous Sources and Correlated with Land-Use Variables by Gu, Peishi, Li, Hugh Z, Ye, Qing, Robinson, Ellis S, Apte, Joshua S, Robinson, Allen L, Presto, Albert A

“…Localized primary emissions of carbonaceous aerosol are the major drivers of intracity variability of submicron particulate matter (PM1) concentrations. We…”
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Direct measurements of methane emissions from key facilities in Alberta's oil and gas supply chain by Li, Hugh Z., Seymour, Scott P., MacKay, Katlyn, Wang, James S., Warren, Jack, Guanter, Luis, Zavala-Araiza, Daniel, Smith, Mackenzie L., Xie, Donglai

“…The Canadian government aims to achieve a 40–45 % reduction of oil and gas (O&G) methane (CH4) emissions by 2025, and 75 % by 2030, although recent studies…”
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Quantifying source contributions of volatile organic compounds under hydraulic fracking moratorium by Li, Hugh Z., Reeder, Matthew D., Pekney, Natalie J.

“…Volatile organic compounds (VOCs) are precursors for ozone (O3) and secondary particulate matter, which contribute to asthma and cardiovascular diseases. With…”
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Land-Use Regression Modeling of Source-Resolved Fine Particulate Matter Components from Mobile Sampling by Robinson, Ellis Shipley, Shah, Rishabh Urvesh, Messier, Kyle, Gu, Peishi, Li, Hugh Z, Apte, Joshua Schulz, Robinson, Allen L, Presto, Albert A

“…This study presents land-use regression (LUR) models for submicron particulate matter (PM1) components from an urban area. Models are presented for mass…”
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Urban Organic Aerosol Exposure: Spatial Variations in Composition and Source Impacts by Li, Hugh Z, Dallmann, Timothy R, Li, Xiang, Gu, Peishi, Presto, Albert A

“…We conducted a mobile sampling campaign in a historically industrialized terrain (Pittsburgh, PA) targeting spatial heterogeneity of organic aerosol…”
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Urban Ultrafine Particle Exposure Assessment with Land-Use Regression: Influence of Sampling Strategy by Saha, Provat K, Li, Hugh Z, Apte, Joshua S, Robinson, Allen L, Presto, Albert A

“…Sampling strategies in the collection of ultrafine particle (UFP) data to develop land-use regression (LUR) models can strongly influence the resulting…”
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Constraining natural gas pipeline emissions in San Juan Basin using mobile sampling by Li, Hugh Z., Mundia-Howe, Mumbi, Reeder, Matthew D., Pekney, Natalie J.

“…Quantifying methane (CH4) leaks of pipeline systems is critical to ensure accurate emission factors in regional and global atmospheric models. The previous…”
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Moving beyond Fine Particle Mass: High-Spatial Resolution Exposure to Source-Resolved Atmospheric Particle Number and Chemical Mixing State by Ye, Qing, Li, Hugh Z, Gu, Peishi, Robinson, Ellis S, Apte, Joshua S, Sullivan, Ryan C, Robinson, Allen L, Donahue, Neil M, Presto, Albert A

“…Most epidemiological studies address health effects of atmospheric particulate matter (PM) using mass-based measurements as exposure surrogates. However, this…”
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Sources and reliability of reported methane reductions from the oil and gas industry in Alberta, Canada by Seymour, Scott P., Xie, Donglai, Li, Hugh Z., MacKay, Katlyn

“…Since committing to a 40%–45% reduction in methane emissions from the oil and gas industry in Canada by 2025, relative to 2012 levels, the federal government…”
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Spatially dense air pollutant sampling: Implications of spatial variability on the representativeness of stationary air pollutant monitors by Li, Hugh Z., Gu, Peishi, Ye, Qing, Zimmerman, Naomi, Robinson, Ellis S., Subramanian, R., Apte, Joshua S., Robinson, Allen L., Presto, Albert A.

“…Long- and short-term exposure to airborne pollutants results in adverse health effects. Regulatory monitors can be used to determine if regional concentrations…”
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Quantifying Urban Spatial Variations of Anthropogenic VOC Concentrations and Source Contributions with a Mobile Sampling Platform by Gu, Peishi, Dallmann, Timothy R, Li, Hugh Z, Tan, Yi, Presto, Albert A

“…Volatile organic compounds (VOCs) are important atmospheric constituents because they contribute to formation of ozone and secondary aerosols, and because some…”
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