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    Academic Journals

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• Retrieval of tropospheric aerosol, NO.sub.2, and HCHO vertical profiles from MAX-DOAS observations over Thessaloniki, Greece: intercomparison and validation of two inversion algorithms.

  Authors:Dimitris Karagkiozidis, Martina Michaela Friedrich, Steffen Beirle, Alkiviadis Bais, François Hendrick, Kalliopi Artemis Voudouri, et al.From:Atmospheric Measurement Techniques (Vol. 15, Issue 5) Peer-Reviewed

  Mar. 11, 2022532 words Article In this study we focus on the retrieval of aerosol and trace gas vertical profiles from multi-axis differential optical absorption spectroscopy (MAX-DOAS) observations for the first time over Thessaloniki, Greece. We use...

• Calculating the vertical column density of O.sub.4 during daytime from surface values of pressure, temperature, and relative humidity.

  Authors:Steffen Beirle, Christian Borger, Steffen Dörner, Vinod Kumar, and Thomas WagnerFrom:Atmospheric Measurement Techniques (Vol. 15, Issue 4) Peer-Reviewed

  Feb. 24, 2022229 words Brief article We present a formalism that relates the vertical column density (VCD) of the oxygen collision complex O.sub.2 -O.sub.2 (denoted as O.sub.4 below) to surface (2 m) values of temperature and pressure, based on physical...

• 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...

• 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

• Technical note: Evaluation of profile retrievals of aerosols and trace gases for MAX-DOAS measurements under different aerosol scenarios based on radiative transfer simulations.

  Authors:Xin Tian, Yang Wang, Steffen Beirle, Pinhua Xie, Thomas Wagner, Jin Xu, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 17) Peer-Reviewed

  Aug. 31, 2021420 words Article Ground-based Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) is a state-of-the-art remote sensing technique for deriving vertical profiles of trace gases and aerosols. However, MAX-DOAS profile...

• Observations of iodine monoxide over three summers at the Indian Antarctic bases of Bharati and Maitri.

  Authors:Anoop S. Mahajan, Mriganka S. Biswas, Steffen Beirle, Thomas Wagner, Anja Schönhardt, Nuria Benavent, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 15) Peer-Reviewed

  Aug. 9, 2021271 words Brief article Iodine plays a vital role in oxidation chemistry over Antarctica, with past observations showing highly elevated levels of iodine oxide (IO) leading to severe depletion of boundary layer ozone in West Antarctica. Here,...

• Structural uncertainty in air mass factor calculation for NO.sub.2 and HCHO satellite retrievals

  Authors:Alba Lorente, K. Folkert Boersma, Huan Yu, Andreas Hilboll, Andreas Richter, Mengyao Liu, et al.From:Atmospheric Measurement Techniques (Vol. 10, Issue 3) Peer-Reviewed

  Mar. 7, 2017450 words Brief article Air mass factor (AMF) calculation is the largest source of uncertainty in NO.sub.2 and HCHO satellite retrievals in situations with enhanced trace gas concentrations in the lower troposphere. Structural uncertainty...

• Validation of OMI, GOME-2A and GOME-2B tropospheric NO.sub.2, SO.sub.2 and HCHO products using MAX-DOAS observations from 2011 to 2014 in Wuxi, China: investigation of the effects of priori profiles and aerosols on the satellite products

  Authors:Yang Wang, Steffen Beirle, Johannes Lampel, Mariliza Koukouli, Isabelle De Smedt, Nicolas Theys, et al.From:Atmospheric Chemistry and Physics (Vol. 17, Issue 8) Peer-Reviewed

  Apr. 18, 2017562 words Brief article, Repor... Tropospheric vertical column densities (VCDs) of NO.sub.2, SO.sub.2 and HCHO derived from the Ozone Monitoring Instrument (OMI) on AURA and the Global Ozone Monitoring Experiment 2 aboard METOP-A (GOME-2A) and METOP-B...

• Evaluating different methods for elevation calibration of MAX-DOAS (Multi AXis Differential Optical Absorption Spectroscopy) instruments during the CINDI-2 campaign

  Authors:Sebastian Donner, Jonas Kuhn, Michel Van Roozendael, Alkiviadis Bais, Steffen Beirle, Tim Bosch, et al.From:Atmospheric Measurement Techniques (Vol. 13, Issue 2) Peer-Reviewed

  Feb. 13, 2020429 words Brief article We present different methods for in-field elevation calibration of MAX-DOAS (Multi AXis Differential Optical Absorption Spectroscopy) instruments that were applied and inter-compared during the second Cabauw...

• Intercomparison of MAX-DOAS vertical profile retrieval algorithms: studies using synthetic data

  Authors:Udo Friess, Steffen Beirle, Leonardo Alvarado Bonilla, Tim Bosch, Martina M. Friedrich, Francois Hendrick, et al.From:Atmospheric Measurement Techniques (Vol. 12, Issue 4) Peer-Reviewed

  Apr. 10, 201968 words Author abstract, Bri... Byline: Udo FrieÃ,Ÿ,, Steffen Beirle, Leonardo Alvarado Bonilla, Tim Bö,sch, Martina M. Friedrich, FranÃ,§,ois Hendrick, Ankie Piters, Andreas Richter, Michel van Roozendael, Vladimir V. Rozanov,...

• Estimating real driving emissions from multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements at the A60 motorway near Mainz, Germany.

  Authors:Bianca Lauster, Steffen Dörner, Steffen Beirle, Sebastian Donner, Sergey Gromov, Katharina Uhlmannsiek, et al.From:Atmospheric Measurement Techniques (Vol. 14, Issue 1) Peer-Reviewed

  Feb. 1, 2021237 words Brief article In urban areas, road traffic is a dominant source of nitrogen oxides (NOx=NO+NO2). Although the emissions from individual vehicles are regulated by the European emission standards, real driving emissions often exceed...

• Identification of atmospheric and oceanic teleconnection patterns in a 20-year global data set of the atmospheric water vapour column measured from satellites in the visible spectral range.

  Authors:Thomas Wagner, Steffen Beirle, Steffen Dörner, Christian Borger, and Roeland Van MalderenFrom:Atmospheric Chemistry and Physics (Vol. 21, Issue 7) Peer-Reviewed

  Apr. 7, 2021458 words Article We used a global long-term (1995-2015) data set of total column water vapour (TCWV) derived from satellite observations to quantify to which extent the temporal patterns of various teleconnections can be identified in...

• Multi-satellite sensor study on precipitation-induced emission pulses of NO.sub.x from soils in semi-arid ecosystems

  Authors:Marloes Penning de Vries, Steffen Beirle, Holger Sihler, Patrick R. Veres, Jonathan Williams, and Thomas WagnerFrom:Atmospheric Chemistry and Physics (Vol. 16, Issue 14) Peer-Reviewed

  July 29, 2016349 words Brief article We present a top-down approach to infer and quantify rain-induced emission pulses of NO.sub.x ( ≡  NO + NO.sub.2 ),...

• Improving algorithms and uncertainty estimates for satellite NO.sub.2 retrievals: results from the quality assurance for the essential climate variables (QA4ECV) project

  Authors:K. Folkert Boersma, Henk J. Eskes, Andreas Richter, Isabelle De Smedt, Alba Lorente, Steffen Beirle, et al.From:Atmospheric Measurement Techniques (Vol. 11, Issue 12) Peer-Reviewed

  Dec. 17, 2018368 words Author abstract, Bri...

  Global observations of tropospheric nitrogen dioxide (NO.sub.2) columns have been shown to be feasible from space, but consistent multi-sensor records do not yet exist, nor are they covered by planned activities at...

• Catalog of NO.sub.x emissions from point sources as derived from the divergence of the NO.sub.2 flux for TROPOMI.

  Authors:Steffen Beirle, Christian Borger, Steffen Dörner, Henk Eskes, Vinod Kumar, Adrianus de Laat, et al.From:Earth System Science Data (Vol. 13, Issue 6) Peer-Reviewed

  June 24, 2021332 words Brief article We present version 1.0 of a global catalog of NO.sub.x emissions from point sources, derived from TROPOspheric Monitoring Instrument (TROPOMI) measurements of tropospheric NO.sub.2 for 2018-2019. The identification of...

• Total column water vapour retrieval from S-5P/TROPOMI in the visible blue spectral range.

  Authors:Christian Borger, Steffen Beirle, Steffen Dörner, Holger Sihler, and Thomas WagnerFrom:Atmospheric Measurement Techniques (Vol. 13, Issue 5) Peer-Reviewed

  May 28, 2020436 words Article Total column water vapour has been retrieved from TROPOMI measurements in the visible blue spectral range and compared to a variety of different reference data sets for clear-sky conditions during boreal summer and...

• The STRatospheric Estimation Algorithm from Mainz (STREAM): estimating stratospheric NO.sub.2 from nadir-viewing satellites by weighted convolution

  Authors:Steffen Beirle, Song Liu, Marloes Penning de Vries, Andrea Pozzer, Holger Sihler, Pieter Valks, et al.From:Atmospheric Measurement Techniques (Vol. 9, Issue 7) Peer-Reviewed

  July 4, 2016220 words Brief article The STRatospheric Estimation Algorithm from Mainz (STREAM) determines stratospheric columns of NO.sub.2  which are needed for the retrieval of tropospheric columns from satellite observations. It is based on...

• Is a scaling factor required to obtain closure between measured and modelled atmospheric O.sub.4 absorptions? An assessment of uncertainties of measurements and radiative transfer simulations for 2 selected days during the MAD-CAT campaign

  Authors:Thomas Wagner, Steffen Beirle, Nuria Benavent, Tim Bosch, Ka Lok Chan, Sebastian Donner, et al.From:Atmospheric Measurement Techniques (Vol. 12, Issue 5) Peer-Reviewed

  May 14, 2019587 words Author abstract, Bri...

  In this study the consistency between MAX-DOAS measurements and radiative transfer simulations of the atmospheric O.sub.4 absorption is investigated on 2 mainly cloud-free days during the MAD-CAT campaign in Mainz,...

• NO.sub.x emission trends over Chinese cities estimated from OMI observations during 2005 to 2015

  Authors:Fei Liu, Steffen Beirle, Qiang Zhang, Ronald J. van der A, Bo Zheng, Dan Tong, et al.From:Atmospheric Chemistry and Physics (Vol. 17, Issue 15) Peer-Reviewed

  Aug. 1, 2017244 words Brief article, Repor... Satellite nitrogen dioxide (NO.sub.2) observations have been widely used to evaluate emission changes. To determine trends in nitrogen oxides (NO.sub.x) emission over China, we used a method independent of chemical...