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    Academic Journals

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• Global, regional and seasonal analysis of total ozone trends derived from the 1995-2020 GTO-ECV climate data record.

  Authors:Melanie Coldewey-Egbers, Diego G. Loyola, Christophe Lerot, and Michel Van RoozendaelFrom:Atmospheric Chemistry and Physics (Vol. 22, Issue 10) Peer-Reviewed

  May 25, 2022338 words Brief article We present an updated perspective on near-global total ozone trends for the period 1995-2020. We use the GOME-type (Global Ozone Monitoring Experiment) Total Ozone Essential Climate Variable (GTO-ECV) satellite data...

• An improved TROPOMI tropospheric NO.sub.2 research product over Europe.

  Authors:Song Liu, Pieter Valks, Gaia Pinardi, Jian Xu, Ka Lok Chan, Athina Argyrouli, et al.From:Atmospheric Measurement Techniques (Vol. 14, Issue 11) Peer-Reviewed

  Nov. 22, 2021522 words Article Launched in October 2017, the TROPOspheric Monitoring Instrument (TROPOMI) aboard Sentinel-5 Precursor provides the potential to monitor air quality over point sources across the globe with a spatial resolution as high...

• Nitrogen dioxide decline and rebound observed by GOME-2 and TROPOMI during COVID-19 pandemic.

  Authors:Song Liu, Pieter Valks, Steffen Beirle, and Diego G. LoyolaFrom:Air Quality, Atmosphere & Health (Vol. 14, Issue 11)

  Nov. 2021282 words Report, Brief articl...

   Abstract Only

• A method for random uncertainties validation and probing the natural variability with application to TROPOMI on board Sentinel-5P total ozone measurements.

  Authors:Viktoria F. Sofieva, Hei Shing Lee, Johanna Tamminen, Christophe Lerot, Fabian Romahn, and Diego G. LoyolaFrom:Atmospheric Measurement Techniques (Vol. 14, Issue 4) Peer-Reviewed

  Apr. 22, 2021282 words Brief article In this paper, we discuss the method for validation of random uncertainties in the remote sensing measurements based on evaluation of the structure function, i.e., root-mean-square differences as a function of increasing...

• Applying FP_ILM to the retrieval of geometry-dependent effective Lambertian equivalent reflectivity (GE_LER) daily maps from UVN satellite measurements

  Authors:Diego G. Loyola, Jian Xu, Klaus-Peter Heue, and Walter ZimmerFrom:Atmospheric Measurement Techniques (Vol. 13, Issue 2) Peer-Reviewed

  Mar. 2, 2020332 words Brief article The retrieval of trace gas, cloud, and aerosol measurements from ultraviolet, visible, and near-infrared (UVN) sensors requires precise information on surface properties that are traditionally obtained from Lambertian...

• Comparison of GTO-ECV and adjusted MERRA-2 total ozone columns from the last 2 decades and assessment of interannual variability.

  Authors:Melanie Coldewey-Egbers, Diego G. Loyola, Gordon Labow, and Stacey M. FrithFrom:Atmospheric Measurement Techniques (Vol. 13, Issue 3) Peer-Reviewed

  Apr. 2, 2020389 words Brief article In this study we compare the satellite-based Global Ozone Monitoring Experiment (GOME)-type Total Ozone Essential Climate Variable (GTO-ECV) record, generated as part of the European Space Agency's Climate Change...

• 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...

• The operational cloud retrieval algorithms from TROPOMI on board Sentinel-5 Precursor

  Authors:Diego G. Loyola, Ronny Lutz, Athina Argyrouli, Fabian Romahn, Robert J. D. Spurr, Mattia Pedergnana, et al.From:Atmospheric Measurement Techniques (Vol. 11, Issue 1) Peer-Reviewed

  Jan. 18, 201859 words Author abstract, Bri... Byline: Diego G. Loyola, Sebastiá,n Gimeno Garcí,a, Ronny Lutz, Athina Argyrouli, Fabian Romahn, Robert J. D. Spurr, Mattia Pedergnana, Adrian Doicu, Ví,ctor Molina Garcí,a, Olena Schü,ssler To...

• Record low ozone values over the Arctic in boreal spring 2020.

  Authors:Martin Dameris, Diego G. Loyola, Matthias Nützel, Melanie Coldewey-Egbers, Christophe Lerot, Fabian Romahn, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 2) Peer-Reviewed

  Jan. 18, 2021433 words Article Ozone data derived from the Tropospheric Monitoring Instrument (TROPOMI) sensor on board the Sentinel-5 Precursor satellite show exceptionally low total ozone columns in the polar region of the Northern Hemisphere...

• Sulfur dioxide layer height retrieval from Sentinel-5 Precursor/TROPOMI using FP_ILM.

  Authors:Pascal Hedelt, Dmitry S. Efremenko, Diego G. Loyola, Robert Spurr, and Lieven ClarisseFrom:Atmospheric Measurement Techniques (Vol. 12, Issue 10) Peer-Reviewed

  Oct. 18, 2019215 words Report, Author abstr...

  The accurate determination of the location, height, and loading of sulfur dioxide (SO.sub.2) plumes emitted by volcanic eruptions is essential for aviation safety. The SO.sub.2 layer height is also one of the most...

• TROPOMI aerosol products: evaluation and observations of synoptic-scale carbonaceous aerosol plumes during 2018-2020.

  Authors:Omar Torres, Hiren Jethva, Changwoo Ahn, Glen Jaross, and Diego G. LoyolaFrom:Atmospheric Measurement Techniques (Vol. 13, Issue 12) Peer-Reviewed

  Dec. 15, 2020252 words Brief article TROPOspheric Monitoring Instrument (TROPOMI) near-ultraviolet (near-UV) radiances are used as input to an inversion algorithm that simultaneously retrieves aerosol optical depth (AOD), single-scattering albedo (SSA), and...

• The use of QBO, ENSO, and NAO perturbations in the evaluation of GOME-2 MetOp A total ozone measurements

  Authors:Kostas Eleftheratos, Christos S. Zerefos, Dimitris S. Balis, Maria-Elissavet Koukouli, John Kapsomenakis, Diego G. Loyola, et al.From:Atmospheric Measurement Techniques (Vol. 12, Issue 2) Peer-Reviewed

  Feb. 14, 2019504 words Author abstract, Bri...

  In this work we present evidence that quasi-cyclical perturbations in total ozone (quasi-biennial oscillation - QBO, El Niño-Southern Oscillation - ENSO, and North Atlantic Oscillation - NAO) can be used as...

• Volcanic SO.sub.2 effective layer height retrieval for the Ozone Monitoring Instrument (OMI) using a machine-learning approach.

  Authors:Nikita M. Fedkin, Can Li, Nickolay A. Krotkov, Pascal Hedelt, Diego G. Loyola, Russell R. Dickerson, et al.From:Atmospheric Measurement Techniques (Vol. 14, Issue 5) Peer-Reviewed

  May 20, 2021359 words Brief article Information about the height and loading of sulfur dioxide (SO.sub.2) plumes from volcanic eruptions is crucial for aviation safety and for assessing the effect of sulfate aerosols on climate. While SO.sub.2 layer height...