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    Academic Journals

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• Use of machine learning and principal component analysis to retrieve nitrogen dioxide (NO.sub.2) with hyperspectral imagers and reduce noise in spectral fitting.

  Authors:Joanna Joiner, Sergey Marchenko, Zachary Fasnacht, Lok Lamsal, Can Li, Alexander Vasilkov, et al.From:Atmospheric Measurement Techniques (Vol. 16, Issue 2) Peer-Reviewed

  Jan. 26, 2023396 words Brief article Nitrogen dioxide (NO.sub.2) is an important trace-gas pollutant and climate agent whose presence also leads to spectral interference in ocean color retrievals. NO.sub.2 column densities have been retrieved with satellite...

• Version 2 of the global catalogue of large anthropogenic and volcanic SO.sub.2 sources and emissions derived from satellite measurements.

  Authors:Vitali E. Fioletov, Chris A. McLinden, Debora Griffin, Ihab Abboud, Nickolay Krotkov, Peter J. T. Leonard, et al.From:Earth System Science Data (Vol. 15, Issue 1) Peer-Reviewed

  Jan. 4, 2023419 words Article Sulfur dioxide (SO.sub.2) measurements from the Ozone Monitoring Instrument (OMI), Ozone Mapping and Profiler Suite (OMPS), and TROPOspheric Monitoring Instrument (TROPOMI) satellite spectrometers were used to update and...

• 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...

• Polarization performance simulation for the GeoXO atmospheric composition instrument: NO.sub.2 retrieval impacts.

  Authors:Aaron Pearlman, Monica Cook, Boryana Efremova, Francis Padula, Lok Lamsal, Joel McCorkel, et al.From:Atmospheric Measurement Techniques (Vol. 15, Issue 15) Peer-Reviewed

  Aug. 4, 2022395 words Brief article NOAA's Geostationary Extended Observations (GeoXO) constellation will continue and expand on the capabilities of the current generation of geostationary satellite systems to support US weather, ocean, atmosphere, and...

• Radiative forcing of Saharan dust: GOCART model simulations compared with ERBE data

  Authors:Clark J. Weaver, Paul Ginoux, N. Christina Hsu, Ming-Dah Chou, and Joanna JoinerFrom:Journal of the Atmospheric Sciences (Vol. 59, Issue 3) Peer-Reviewed

  Feb. 1, 2002255 words Abstract

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• Using satellite observations of tropospheric NO.sub.2 columns to infer long-term trends in US NO.sub.x emissions: the importance of accounting for the free tropospheric NO.sub.2 background

  Authors:Rachel F. Silvern, Daniel J. Jacob, Loretta J. Mickley, Melissa P. Sulprizio, Katherine R. Travis, Eloise A. Marais, et al.From:Atmospheric Chemistry and Physics (Vol. 19, Issue 13) Peer-Reviewed

  July 12, 2019341 words Author abstract, Bri...

  The National Emission Inventory (NEI) of the US Environmental Protection Agency (EPA) reports a steady decrease in US NO.sub.x emissions over the 2005-2017 period at a rate of 0.1 Tg N a.sup.-1...

• A geometry-dependent surface Lambertian-equivalent reflectivity product for UV-Vis retrievals - Part 1: Evaluation over land surfaces using measurements from OMI at 466 nm

  Authors:Wenhan Qin, Zachary Fasnacht, David Haffner, Alexander Vasilkov, Joanna Joiner, Nickolay Krotkov, et al.From:Atmospheric Measurement Techniques (Vol. 12, Issue 7) Peer-Reviewed

  July 19, 2019385 words Brief article

  The anisotropy of the Earth's surface reflection has implications for satellite-based retrieval algorithms that utilize climatological surface reflectivity databases that do not depend upon the observation geometry....

• A new method for inferring city emissions and lifetimes of nitrogen oxides from high-resolution nitrogen dioxide observations: a model study.

  Authors:Fei Liu, Zhining Tao, Steffen Beirle, Joanna Joiner, Yasuko Yoshida, Steven J. Smith, et al.From:Atmospheric Chemistry and Physics (Vol. 22, Issue 2) Peer-Reviewed

  Jan. 26, 2022370 words Brief article We present a new method to infer emissions and lifetimes of nitrogen oxides (NO.sub.x) based on tropospheric nitrogen dioxide (NO.sub.2) observations together with reanalysis wind fields for cities located in polluted...

• 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...

• A geometry-dependent surface Lambertian-equivalent reflectivity product for UV-Vis retrievals - Part 2: Evaluation over open ocean

  Authors:Zachary Fasnacht, Alexander Vasilkov, David Haffner, Wenhan Qin, Joanna Joiner, Nickolay Krotkov, et al.From:Atmospheric Measurement Techniques (Vol. 12, Issue 12) Peer-Reviewed

  Dec. 19, 2019242 words Brief article Satellite-based cloud, aerosol, and trace-gas retrievals from ultraviolet (UV) and visible (Vis) wavelengths depend on the accurate representation of surface reflectivity. Current UV and Vis retrieval algorithms...

• NOAA-NASA-DoD Workshop on Satellite Data Assimilation

  Authors:Ronald M. Errico, George Ohring, John Derber, and Joanna JoinerFrom:Bulletin of the American Meteorological Society (Vol. 81, Issue 10) Peer-Reviewed

  Oct. 200088 words Article

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• Explicit and consistent aerosol correction for visible wavelength satellite cloud and nitrogen dioxide retrievals based on optical properties from a global aerosol analysis.

  Authors:Alexander Vasilkov, Nickolay Krotkov, Eun-Su Yang, Lok Lamsal, Joanna Joiner, Patricia Castellanos, et al.From:Atmospheric Measurement Techniques (Vol. 14, Issue 4) Peer-Reviewed

  Apr. 13, 2021252 words Brief article We discuss an explicit and consistent aerosol correction for cloud and NO.sub.2 retrievals that are based on the mixed Lambertian-equivalent reflectivity (MLER) concept. We apply the approach to data from the Ozone...

• Cloud products from the Earth Polychromatic Imaging Camera (EPIC): algorithms and initial evaluation

  Authors:Yuekui Yang, Kerry Meyer, Galina Wind, Yaping Zhou, Alexander Marshak, Steven Platnick, et al.From:Atmospheric Measurement Techniques (Vol. 12, Issue 3) Peer-Reviewed

  Mar. 29, 201959 words Author abstract, Bri... Byline: Yuekui Yang, Kerry Meyer, Galina Wind, Yaping Zhou, Alexander Marshak, Steven Platnick, Qilong Min, Anthony B. Davis, Joanna Joiner, Alexander Vasilkov, David Duda, Wenying Su To access, purchase,...

• Combining livestock production information in a process-based vegetation model to reconstruct the history of grassland management

  Authors:Jinfeng Chang, Philippe Ciais, Mario Herrero, Petr Havlik, Matteo Campioli, Xianzhou Zhang, et al.From:Biogeosciences (Vol. 13, Issue 12) Peer-Reviewed

  June 29, 2016349 words Brief article Grassland management type (grazed or mown) and intensity (intensive or extensive) play a crucial role in the greenhouse gas balance and surface energy budget of this biome, both at field scale and at large spatial...

• A global spatially contiguous solar-induced fluorescence (CSIF) dataset using neural networks

  Authors:Yao Zhang, Joanna Joiner, Seyed Hamed Alemohammad, Sha Zhou, and Pierre GentineFrom:Biogeosciences (Vol. 15, Issue 19) Peer-Reviewed

  Oct. 2, 2018355 words Author abstract, Bri...

  Satellite-retrieved solar-induced chlorophyll fluorescence (SIF) has shown great potential to monitor the photosynthetic activity of terrestrial ecosystems. However, several issues, including low spatial and temporal...

• Rotational Raman scattering (Ring effect) in satellite backscatter ultraviolet measurements

  Authors:Joanna Joiner, Pawan K. Bhartia, Richard P. Cebula, Ernest Hilsenrath, Richard D. McPeters, and Hongwoo ParkFrom:Applied Optics (Vol. 34, Issue 21) Peer-Reviewed

  July 20, 1995115 words Article

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• 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...

• A global catalogue of large SO.sub.2 sources and emissions derived from the Ozone Monitoring Instrument

  Authors:Vitali E. Fioletov, Chris A. McLinden, Nickolay Krotkov, Can Li, Joanna Joiner, Nicolas Theys, et al.From:Atmospheric Chemistry and Physics (Vol. 16, Issue 18) Peer-Reviewed

  Sept. 15, 2016308 words Brief article Sulfur dioxide (SO.sub.2) measurements from the Ozone Monitoring Instrument (OMI) satellite sensor processed with the new principal component analysis (PCA) algorithm were used to detect large point emission sources or...

• A cloud-ozone data product from Aura OMI and MLS satellite measurements

  Authors:Jerald R. Ziemke, Sarah A. Strode, Anne R. Douglass, Joanna Joiner, Alexander Vasilkov, Luke D. Oman, et al.From:Atmospheric Measurement Techniques (Vol. 10, Issue 11) Peer-Reviewed

  Nov. 1, 2017312 words Author abstract, Bri... Ozone within deep convective clouds is controlled by several factors involving photochemical reactions and transport. Gas-phase photochemical reactions and heterogeneous surface chemical reactions involving ice, water...

• First results from the OMI rotational Raman scattering cloud pressure algorithm

  Authors:Joanna Joiner and Alexander P. VasilkovFrom:IEEE Transactions on Geoscience and Remote Sensing (Vol. 44, Issue 5) Peer-Reviewed

  May 2006250 words Author abstract 60L

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