Search Results - "Lamsal, Lok N"

A Space-based, High-resolution View of Notable Changes in Urban Nox Pollution Around the World (2005 - 2014) by Duncan, Bryan N., Lamsal, Lok N., Thompson, Anne M., Yoshida, Yasuko, Lu, Zifeng, Streets, David G., Hurwitz, Margaret M., Pickering, Kenneth E.

“…Nitrogen oxides (NOxNO+NO2) are produced during combustion processes and, thus may serve as a proxy for fossil fuel-based energy usage and committed greenhouse…”
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Global Fine Scale Changes in Ambient NO2 During COVID-19 Lockdowns by Cooper, Matthew J, Martin, Randall V, Levelt, Pieternel F, Veefkind, Pepijn, Lamsal, Lok N, Krotkov, Nickolay A, Brook, Jeffrey R, McLinden, Chris A

“…Nitrogen dioxide (NO2) is an important contributor to air pollution and can adversely affect human health(1–9) . A decrease in NO2 concentrations has been…”
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Enhanced Capabilities of TROPOMI NO2: Estimating NOX from North American Cities and Power Plants by Goldberg, Daniel L, Lu, Zifeng, Streets, David G, Foy, Benjamin de, Griffin, Debora, Lamsal, Lok N, Krotkov, Nickolay A

“…The TROPOspheric Monitoring Instrument (TROPOMI) is used to derive top-down NOXemissions for twolarge power plants and three megacities in North America…”
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Ozone Monitoring Instrument (OMI) Aura nitrogen dioxide standard product version 4.0 with improved surface and cloud treatments by Lamsal, Lok N, Krotkov, Nickolay A, Vasilkov, Alexander, Marchenko, Sergey, Qin, Wenhan, Yang, Eun-Su, Fasnacht, Zachary, Joiner, Joanna, Choi, Sungyeon, Haffner, David, Swartz, William H, Fisher, Bradford, Bucsela, Eric

“…We present a new and improved version (V4.0) of the NASA standard nitrogen dioxide (NO2) product from the Ozone Monitoring Instrument (OMI) on the Aura…”
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Abrupt decline in tropospheric nitrogen dioxide over China after the outbreak of COVID-19 by Liu, Fei, Page, Aaron, Strode, Sarah A., Yoshida, Yasuko, Choi, Sungyeon, Zheng, Bo, Lamsal, Lok N., Li, Can, Krotkov, Nickolay A., Eskes, Henk, van der A, Ronald, Veefkind, Pepijn, Levelt, Pieternel F., Hauser, Oliver P., Joiner, Joanna

“…Chinese COVID-19 policies indirectly lead to reduced fuel use and reduction in environmental emissions. China’s policy interventions to reduce the spread of…”
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Emissions estimation from satellite retrievals: A review of current capability by Streets, David G., Canty, Timothy, Carmichael, Gregory R., de Foy, Benjamin, Dickerson, Russell R., Duncan, Bryan N., Edwards, David P., Haynes, John A., Henze, Daven K., Houyoux, Marc R., Jacob, Daniel J., Krotkov, Nickolay A., Lamsal, Lok N., Liu, Yang, Lu, Zifeng, Martin, Randall V., Pfister, Gabriele G., Pinder, Robert W., Salawitch, Ross J., Wecht, Kevin J.

“…Since the mid-1990s a new generation of Earth-observing satellites has been able to detect tropospheric air pollution at increasingly high spatial and temporal…”
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Trends and variability in surface ozone over the United States by Strode, Sarah A., Rodriguez, Jose M., Logan, Jennifer A., Cooper, Owen R., Witte, Jacquelyn C., Lamsal, Lok N., Damon, Megan, Van Aartsen, Bruce, Steenrod, Stephen D., Strahan, Susan E.

“…We investigate the observed trends and interannual variability in surface ozone over the United States using the Global Modeling Initiative chemical transport…”
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Evaluating a Space‐Based Indicator of Surface Ozone‐NOx‐VOC Sensitivity Over Midlatitude Source Regions and Application to Decadal Trends by Jin, Xiaomeng, Fiore, Arlene M., Murray, Lee T., Valin, Lukas C., Lamsal, Lok N., Duncan, Bryan, Folkert Boersma, K., De Smedt, Isabelle, Abad, Gonzalo Gonzalez, Chance, Kelly, Tonnesen, Gail S.

“…Determining effective strategies for mitigating surface ozone (O3) pollution requires knowledge of the relative ambient concentrations of its precursors, NOx,…”
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Satellite observation of pollutant emissions from gas flaring activities near the Arctic by Li, Can, Hsu, N. Christina, Sayer, Andrew M., Krotkov, Nickolay A., Fu, Joshua S., Lamsal, Lok N., Lee, Jaehwa, Tsay, Si-Chee

“…Gas flaring is a common practice in the oil industry that can have significant environmental impacts, but has until recently been largely overlooked in terms…”
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A decade of changes in nitrogen oxides over regions of oil and natural gas activity in the United States by Majid, Aman, Val Martin, Maria, Lamsal, Lok N., Duncan, Bryan N.

“…Nitrogen oxides (NOx = NO2 + NO) are a highly regulated species that play a major role in the formation of photochemical smog. While NOx emissions are…”
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Two Air Quality Regimes in Total Column NO2 over the Gulf of Mexico in May 2019: Shipboard and Satellite Views by Thompson, Anne M, Kollonige, Debra E, Stauffer, Ryan M, Kotsakis, Alexander E, Abuhassan, Nader, Lamsal, Lok N, Swap, Robert J, Blake, Donald R, Townsend-Small, Amy, Wecht, Holli D

“…The Satellite Coastal and Oceanic Atmospheric Pollution Experiment (SCOAPE) cruise in the Gulf of Mexico was conducted in May 2019 by NASA and the Bureau of…”
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Estimates of power plant NOx emissions and lifetimes from OMI NO2 satellite retrievals by de Foy, Benjamin, Lu, Zifeng, Streets, David G., Lamsal, Lok N., Duncan, Bryan N.

“…Isolated power plants with well characterized emissions serve as an ideal test case of methods to estimate emissions using satellite data. In this study we…”
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High‐Resolution Mapping of Nitrogen Dioxide With TROPOMI: First Results and Validation Over the Canadian Oil Sands by Griffin, Debora, Zhao, Xiaoyi, Boersma, Folkert, Bourassa, Adam, Dammers, Enrico, Degenstein, Doug, Fehr, Lukas, Fioletov, Vitali, Hayden, Katherine, Kharol, Shailesh K, Li, Shao-Meng, Makar, Paul, Martin, Randall V, Mihele, Cristian, Mittermeier, Richard L, Krotkov, Nickolay, Sneep, Maarten, Lamsal, Lok N, Linden, Mark ter, Geffen, Jos van, Veefkind, Pepijn, Wolde, Mengistu

“…TROPOspheric Monitoring Instrument (TROPOMI), on-board the Sentinel-5 Precursersatellite, is a nadir-viewing spectrometer measuring reflected sunlight in the…”
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Health damages from air pollution in China by Matus, Kira, Nam, Kyung-Min, Selin, Noelle E., Lamsal, Lok N., Reilly, John M., Paltsev, Sergey

“…► Air pollution in China has created a substantial burden to its economy. ► Pollution-caused welfare damage increased from US$22 billion in 1975 to US$112…”
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Aura OMI Observations of Regional SO2 and NO2 Pollution Changes from 2005 to 2015 by Krotkov, Nickolay A., McLinden, Chris A., Li, Can, Lamsal, Lok N., Celarier, Edward A., Marchenko, Sergey V., Swartz, William H., Bucsela, Eric J., Joiner, Joanna, Duncan, Bryan N., Boersma, K. Folkert, Veefkind, J. Pepijn, Levelt, Pieternel F., Fioletov, Vitali E., Dickerson, Russell R., He, Hao, Lu, Zifeng, Streets, David G.

“…The Ozone Monitoring Instrument (OMI) onboard NASA's Aura satellite has been providing global observations of the ozone layer and key atmospheric pollutant…”
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Global changes in the diurnal cycle of surface ozone by Strode, Sarah A., Ziemke, Jerald R., Oman, Luke D., Lamsal, Lok N., Olsen, Mark A., Liu, Junhua

“…Changing emissions of NOx and other ozone precursors drive trends in both production and loss of surface ozone, leading to surface ozone trends that differ…”
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The Version 3 OMI NO2 Standard Product by Krotkov, Nickolay A., Lamsal, Lok N., Celarier, Edward A., Swartz, William H., Marchenko, Sergey V., Bucsela, Eric J., Chan, Ka Lok, Wenig, Mark, Zara, Marina

“…We describe the new version 3.0 NASA Ozone Monitoring Instrument (OMI) standard nitrogen dioxide (NO2) products (SPv3). The products and documentation are…”
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Revisiting the effectiveness of HCHO/NO2 ratios for inferring ozone sensitivity to its precursors using high resolution airborne remote sensing observations in a high ozone episode during the KORUS-AQ campaign by Souri, Amir H., Nowlan, Caroline R., Wolfe, Glenn M., Lamsal, Lok N., Chan Miller, Christopher E., Abad, Gonzalo González, Janz, Scott J., Fried, Alan, Blake, Donald R., Weinheimer, Andrew J., Diskin, Glenn S., Liu, Xiong, Chance, Kelly

“…The nonlinear chemical processes involved in ozone production (P(O3)) have necessitated using proxy indicators to convey information about the primary…”
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Exploiting OMI NO2 satellite observations to infer fossil-fuel CO2 emissions from U.S. megacities by Goldberg, Daniel L., Lu, Zifeng, Oda, Tomohiro, Lamsal, Lok N., Liu, Fei, Griffin, Debora, McLinden, Chris A., Krotkov, Nickolay A., Duncan, Bryan N., Streets, David G.

“…Fossil-fuel CO2 emissions and their trends in eight U.S. megacities during 2006–2017 are inferred by combining satellite-derived NOX emissions with bottom-up…”
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Using satellite observations of tropospheric NO2 columns to infer long-term trends in US NOx emissions: the importance of accounting for the free tropospheric NO2 background by Silvern, Rachel F, Jacob, Daniel J, Mickley, Loretta J, Sulprizio, Melissa P, Travis, Katherine R, Marais, Eloise A, Cohen, Ronald C, Laughner, Joshua L, Choi, Sungyeon, Joiner, Joanna, Lamsal, Lok N

“…The National Emission Inventory (NEI) of the US Environmental Protection Agency (EPA) reports a steady decrease in US NOx emissions over the 2005–2017 period…”
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