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    Academic Journals

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• A new machine-learning-based analysis for improving satellite-retrieved atmospheric composition data: OMI SO.sub.2 as an example.

  Authors:Can Li, Joanna Joiner, Fei Liu, Nickolay A. Krotkov, Vitali Fioletov, and Chris McLindenFrom:Atmospheric Measurement Techniques (Vol. 15, Issue 18) Peer-Reviewed

  Sept. 27, 2022457 words Article Despite recent progress, satellite retrievals of anthropogenic SO.sub.2 still suffer from relatively low signal-to-noise ratios. In this study, we demonstrate a new machine learning data analysis method to improve the...

• Version 2 Ozone Monitoring Instrument SO.sub.2 product (OMSO2 V2): new anthropogenic SO.sub.2 vertical column density dataset.

  Authors:Can Li, Nickolay A. Krotkov, Peter J. T. Leonard, Simon Carn, Joanna Joiner, Robert J. D. Spurr, et al.From:Atmospheric Measurement Techniques (Vol. 13, Issue 11) Peer-Reviewed

  Nov. 19, 2020428 words Article The Ozone Monitoring Instrument (OMI) has been providing global observations of SO.sub.2 pollution since 2004. Here we introduce the new anthropogenic SO.sub.2 vertical column density (VCD) dataset in the version 2 OMI...

• Assessment of NO.sub.2 observations during DISCOVER-AQ and KORUS-AQ field campaigns.

  Authors:Sungyeon Choi, Lok N. Lamsal, Melanie Follette-Cook, Joanna Joiner, Nickolay A. Krotkov, William H. Swartz, et al.From:Atmospheric Measurement Techniques (Vol. 13, Issue 5) Peer-Reviewed

  May 19, 2020394 words Brief article NASA's Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality (DISCOVER-AQ, conducted in 2011-2014) campaign in the United States and the joint NASA and...

• Aura OMI observations of regional SO.sub.2 and NO.sub.2 pollution changes from 2005 to 2015

  Authors:Nickolay A. Krotkov, Chris A. McLinden, Can Li, Lok N. Lamsal, Edward A. Celarier, Sergey V. Marchenko, et al.From:Atmospheric Chemistry and Physics (Vol. 16, Issue 7) Peer-Reviewed

  Apr. 13, 2016414 words Brief article The Ozone Monitoring Instrument (OMI) onboard NASA's Aura satellite has been providing global observations of the ozone layer and key atmospheric pollutant gases, such as nitrogen dioxide (NO.sub.2) and sulfur dioxide...

• Anthropogenic and volcanic point source SO.sub.2 emissions derived from TROPOMI on board Sentinel-5 Precursor: first results.

  Authors:Vitali Fioletov, Chris A. McLinden, Debora Griffin, Nicolas Theys, Diego G. Loyola, Pascal Hedelt, et al.From:Atmospheric Chemistry and Physics (Vol. 20, Issue 9) Peer-Reviewed

  May 13, 2020318 words Brief article The paper introduces the first TROPOMI-based sulfur dioxide (SO.sub.2) emissions estimates for point sources. A total of about 500 continuously emitting point sources releasing about 10 kt yr.sup.-1 to more...

• Multi-source SO.sub.2 emission retrievals and consistency of satellite and surface measurements with reported emissions

  Authors:Vitali Fioletov, Chris A. McLinden, Shailesh K. Kharol, Nickolay A. Krotkov, Can Li, Joanna Joiner, et al.From:Atmospheric Chemistry and Physics (Vol. 17, Issue 20) Peer-Reviewed

  Oct. 24, 2017285 words Author abstract, Bri... Reported sulfur dioxide (SO.sub.2) emissions from US and Canadian sources have declined dramatically since the 1990s as a result of emission control measures. Observations from the Ozone Monitoring Instrument (OMI) on...

• Surface erythemal UV irradiance in the continental United States derived from ground-based and OMI observations: quality assessment, trend analysis and sampling issues

  Authors:Huanxin Zhang, Jun Wang, Lorena Castro Garcia, Jing Zeng, Connor Dennhardt, Yang Liu, et al.From:Atmospheric Chemistry and Physics (Vol. 19, Issue 4) Peer-Reviewed

  Feb. 19, 2019475 words Author abstract, Bri...

  Surface full-sky erythemal dose rate (EDR) from the Ozone Monitoring Instrument (OMI) at both satellite overpass time and local noon time is evaluated against ground measurements at 31 sites from the US Department of...

• A methodology to constrain carbon dioxide emissions from coal-fired power plants using satellite observations of co-emitted nitrogen dioxide.

  Authors:Fei Liu, Bryan N. Duncan, Nickolay A. Krotkov, Lok N. Lamsal, Steffen Beirle, Debora Griffin, et al.From:Atmospheric Chemistry and Physics (Vol. 20, Issue 1) Peer-Reviewed

  Jan. 3, 2020397 words Brief article We present a method to infer CO.sub.2 emissions from individual power plants based on satellite observations of co-emitted nitrogen dioxide (NO.sub.2 ), which could serve as complementary verification of bottom-up...

• Surface ultraviolet irradiance from OMI

  Authors:Aapo Tanskanen, Nickolay A. Krotkov, Jay R. Herman, and Antti ArolaFrom:IEEE Transactions on Geoscience and Remote Sensing (Vol. 44, Issue 5) Peer-Reviewed

  May 2006196 words Author abstract 60L

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• Limb-nadir matching using non-coincident NO.sub.2 observations: proof of concept and the OMI-minus-OSIRIS prototype product

  Authors:Cristen Adams, Elise N. Normand, Chris A. McLinden, Adam E. Bourassa, Nicholas D. Lloyd, Douglas A. Degenstein, et al.From:Atmospheric Measurement Techniques (Vol. 9, Issue 8) Peer-Reviewed

  Aug. 26, 2016320 words Brief article A variant of the limb-nadir matching technique for deriving tropospheric NO.sub.2 columns is presented in which the stratospheric component of the NO.sub.2 slant column density (SCD) measured by the Ozone Monitoring...

• Band residual difference algorithm for retrieval of S[O.sub.2] from the Aura Ozone Monitoring Instrument (OMI)

  Authors:Nickolay A. Krotkov, Simon A. Carn, Arlin J. Krueger, Pawan K. Bhartia, and Kai YangFrom:IEEE Transactions on Geoscience and Remote Sensing (Vol. 44, Issue 5) Peer-Reviewed

  May 2006174 words Author abstract 60L

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• Satellite-derived emissions of carbon monoxide, ammonia, and nitrogen dioxide from the 2016 Horse River wildfire in the Fort McMurray area

  Authors:Cristen Adams, Chris A. McLinden, Mark W. Shephard, Nolan Dickson, Enrico Dammers, Jack Chen, et al.From:Atmospheric Chemistry and Physics (Vol. 19, Issue 4) Peer-Reviewed

  Feb. 28, 2019482 words Brief article, Repor...

  In May 2016, the Horse River wildfire led to the evacuation of ∼ 88 000 people from Fort McMurray and surrounding areas and consumed ∼ 590 000 ha...

• Reduction of skylight reflection effects in the above-water measurement of diffuse marine reflectance: comment

  Authors:Nickolay A. Krotkov and Alexander P. VasilkovFrom:Applied Optics (Vol. 39, Issue 9) Peer-Reviewed

  Mar. 20, 2000174 words Article

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• Comparisons of spectral aerosol single scattering albedo in Seoul, South Korea

  Authors:Jungbin Mok, Nickolay A. Krotkov, Omar Torres, Hiren Jethva, Zhanqing Li, Jhoon Kim, et al.From:Atmospheric Measurement Techniques (Vol. 11, Issue 4) Peer-Reviewed

  Apr. 23, 2018274 words Author abstract, Bri... Quantifying aerosol absorption at ultraviolet (UV) wavelengths is important for monitoring air pollution and aerosol amounts using current (e.g., Aura/OMI) and future (e.g., TROPOMI, TEMPO, GEMS, and Sentinel-4)...

• Ozone Monitoring Instrument (OMI) Aura nitrogen dioxide standard product version 4.0 with improved surface and cloud treatments.

  Authors:Lok N. Lamsal, Nickolay A. Krotkov, Alexander Vasilkov, Sergey Marchenko, Wenhan Qin, Eun-Su Yang, et al.From:Atmospheric Measurement Techniques (Vol. 14, Issue 1) Peer-Reviewed

  Jan. 21, 2021329 words Brief article We present a new and improved version (V4.0) of the NASA standard nitrogen dioxide (NO.sub.2) product from the Ozone Monitoring Instrument (OMI) on the Aura satellite. This version incorporates the most salient...

• The TROPOMI surface UV algorithm

  Authors:Anders V. Lindfors, Niilo Kalakoski, Kaisa Lakkala, Tero Mielonen, Maarten Sneep, Nickolay A. Krotkov, et al.From:Atmospheric Measurement Techniques (Vol. 11, Issue 2) Peer-Reviewed

  Feb. 19, 201856 words Author abstract, Bri... Byline: Anders V. Lindfors, Jukka Kujanpä,ä,, Niilo Kalakoski, Anu Heikkilä,, Kaisa Lakkala, Tero Mielonen, Maarten Sneep, Nickolay A. Krotkov, Antti Arola, Johanna Tamminen To access, purchase,...

• New-generation NASA Aura Ozone Monitoring Instrument (OMI) volcanic SO.sub.2 dataset: algorithm description, initial results, and continuation with the Suomi-NPP Ozone Mapping and Profiler Suite (OMPS)

  Authors:Can Li, Nickolay A. Krotkov, Simon Carn, Yan Zhang, Robert J. D. Spurr, and Joanna JoinerFrom:Atmospheric Measurement Techniques (Vol. 10, Issue 2) Peer-Reviewed

  Feb. 6, 2017394 words Brief article Since the fall of 2004, the Ozone Monitoring Instrument (OMI) has been providing global monitoring of volcanic SO.sub.2 emissions, helping to understand their climate impacts and to mitigate aviation hazards. Here we...

• Continuation of long-term global SO.sub.2 pollution monitoring from OMI to OMPS

  Authors:Yan Zhang, Can Li, Nickolay A. Krotkov, Joanna Joiner, Vitali Fioletov, and Chris McLindenFrom:Atmospheric Measurement Techniques (Vol. 10, Issue 4) Peer-Reviewed

  Apr. 20, 2017454 words Author abstract, Bri... Over the past 20 years, advances in satellite remote sensing of pollution-relevant species have made space-borne observations an increasingly important part of atmospheric chemistry research and air quality...

• The version 3 OMI NO.sub.2 standard product

  Authors:Nickolay A. Krotkov, Lok N. Lamsal, Edward A. Celarier, William H. Swartz, Sergey V. Marchenko, Eric J. Bucsela, et al.From:Atmospheric Measurement Techniques (Vol. 10, Issue 9) Peer-Reviewed

  Sept. 1, 2017236 words Brief article, Repor... We describe the new version 3.0 NASA Ozone Monitoring Instrument (OMI) standard nitrogen dioxide (NO.sub.2) products (SPv3). The products and documentation are publicly available from the NASA Goddard Earth Sciences...

• A new global anthropogenic SO.sub.2 emission inventory for the last decade: a mosaic of satellite-derived and bottom-up emissions

  Authors:Fei Liu, Sungyeon Choi, Can Li, Vitali E. Fioletov, Chris A. McLinden, Joanna Joiner, et al.From:Atmospheric Chemistry and Physics (Vol. 18, Issue 22) Peer-Reviewed

  Nov. 22, 2018396 words Author abstract, Bri...

  Sulfur dioxide (SO.sub.2) measurements from the Ozone Monitoring Instrument (OMI) satellite sensor have been used to detect emissions from large point sources. Emissions from over 400 sources have been quantified...