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    Academic Journals

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• On the application and grid-size sensitivity of the urban dispersion model CAIRDIO v2.0 under real city weather conditions.

  Authors:Michael Weger, Holger Baars, Henriette Gebauer, Maik Merkel, Alfred Wiedensohler, and Bernd HeinoldFrom:Geoscientific Model Development (Vol. 15, Issue 8) Peer-Reviewed

  Apr. 22, 2022460 words Article There is a gap between the need for city-wide air-quality simulations considering the intra-urban variability and mircoscale dispersion features and the computational capacities that conventional urban microscale models...

• Pollen observations at four EARLINET stations during the ACTRIS-COVID-19 campaign.

  Authors:Xiaoxia Shang, Holger Baars, Iwona S. Stachlewska, Ina Mattis, and Mika KomppulaFrom:Atmospheric Chemistry and Physics (Vol. 22, Issue 6) Peer-Reviewed

  Mar. 28, 2022270 words Brief article Lidar observations were analysed to characterize atmospheric pollen at four EARLINET (European Aerosol Research Lidar Network) stations (Hohenpeißenberg, Germany; Kuopio, Finland; Leipzig, Germany; and Warsaw, Poland)...

• The vertical aerosol type distribution above Israel - 2 years of lidar observations at the coastal city of Haifa.

  Authors:Birgit Heese, Athena Augusta Floutsi, Holger Baars, Dietrich Althausen, Julian Hofer, Alina Herzog, et al.From:Atmospheric Chemistry and Physics (Vol. 22, Issue 3) Peer-Reviewed

  Feb. 3, 2022335 words Brief article For the first time, vertically resolved long-term lidar measurements of the aerosol distribution were conducted in Haifa, Israel. The measurements were performed by a Polly.sup.XT multi-wavelength Raman and polarization...

• Assimilating spaceborne lidar dust extinction can improve dust forecasts.

  Authors:Jerónimo Escribano, Enza Di Tomaso, Oriol Jorba, Martina Klose, Maria Gonçalves Ageitos, Francesca Macchia, et al.From:Atmospheric Chemistry and Physics (Vol. 22, Issue 1) Peer-Reviewed

  Jan. 14, 2022472 words Article Atmospheric mineral dust has a rich tri-dimensional spatial and temporal structure that is poorly constrained in forecasts and analyses when only column-integrated aerosol optical depth (AOD) is assimilated. At present,...

• First triple-wavelength lidar observations of depolarization and extinction-to-backscatter ratios of Saharan dust.

  Authors:Moritz Haarig, Albert Ansmann, Ronny Engelmann, Holger Baars, Carlos Toledano, Benjamin Torres, et al.From:Atmospheric Chemistry and Physics (Vol. 22, Issue 1) Peer-Reviewed

  Jan. 11, 2022325 words Brief article Two layers of Saharan dust observed over Leipzig, Germany, in February and March 2021 were used to provide the first-ever lidar measurements of the dust lidar ratio (extinction-to-backscatter ratio) and linear...

• Optimization of Aeolus' aerosol optical properties by maximum-likelihood estimation.

  Authors:Frithjof Ehlers, Thomas Flament, Alain Dabas, Dimitri Trapon, Adrien Lacour, Holger Baars, et al.From:Atmospheric Measurement Techniques (Vol. 15, Issue 1) Peer-Reviewed

  Jan. 11, 2022381 words Brief article The European Space Agency (ESA) Earth Explorer Mission Aeolus was launched in August 2018, carrying the first Doppler wind lidar in space. Its primary payload, the Atmospheric LAser Doppler INstrument (ALADIN), is an...

• Hemispheric contrasts in ice formation in stratiform mixed-phase clouds: disentangling the role of aerosol and dynamics with ground-based remote sensing.

  Authors:Martin Radenz, Johannes Bühl, Patric Seifert, Holger Baars, Ronny Engelmann, Boris Barja González, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 23) Peer-Reviewed

  Dec. 8, 2021360 words Brief article Multi-year ground-based remote-sensing datasets were acquired with the Leipzig Aerosol and Cloud Remote Observations System (LACROS) at three sites. A highly polluted central European site (Leipzig, Germany), a polluted...

• Measurement report: Comparison of airborne, in situ measured, lidar-based, and modeled aerosol optical properties in the central European background - identifying sources of deviations.

  Authors:Sebastian Düsing, Albert Ansmann, Holger Baars, Joel C. Corbin, Cyrielle Denjean, Martin Gysel-Beer, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 22) Peer-Reviewed

  Nov. 18, 2021360 words Brief article A unique data set derived from remote sensing, airborne, and ground-based in situ measurements is presented. This measurement report highlights the known complexity of comparing multiple aerosol optical parameters...

• The unexpected smoke layer in the High Arctic winter stratosphere during MOSAiC 2019-2020.

  Authors:Kevin Ohneiser, Albert Ansmann, Alexandra Chudnovsky, Ronny Engelmann, Christoph Ritter, Igor Veselovskii, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 20) Peer-Reviewed

  Oct. 22, 2021516 words Article During the 1-year MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) expedition, the German icebreaker Polarstern drifted through Arctic Ocean ice from October 2019 to May 2020, mainly at...

• Wildfire smoke, Arctic haze, and aerosol effects on mixed-phase and cirrus clouds over the North Pole region during MOSAiC: an introduction.

  Authors:Ronny Engelmann, Albert Ansmann, Kevin Ohneiser, Hannes Griesche, Martin Radenz, Julian Hofer, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 17) Peer-Reviewed

  Sept. 9, 2021441 words Article An advanced multiwavelength polarization Raman lidar was operated aboard the icebreaker Polarstern during the MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) expedition to continuously...

• The unprecedented 2017-2018 stratospheric smoke event: decay phase and aerosol properties observed with the EARLINET.

  Authors:Holger Baars, Albert Ansmann, Kevin Ohneiser, Moritz Haarig, Ronny Engelmann, Dietrich Althausen, et al.From:Atmospheric Chemistry and Physics (Vol. 19, Issue 23) Peer-Reviewed

  Dec. 13, 2019483 words Article Six months of stratospheric aerosol observations with the European Aerosol Research Lidar Network (EARLINET) from August 2017 to January 2018 are presented. The decay phase of an unprecedented, record-breaking...

• Application of the shipborne remote sensing supersite OCEANET for profiling of Arctic aerosols and clouds during Polarstern cruise PS106.

  Authors:Hannes J. Griesche, Patric Seifert, Albert Ansmann, Holger Baars, Carola Barrientos Velasco, Johannes Bühl, et al.From:Atmospheric Measurement Techniques (Vol. 13, Issue 10) Peer-Reviewed

  Oct. 9, 2020382 words Brief article From 25 May to 21 July 2017, the research vessel Polarstern performed the cruise PS106 to the high Arctic in the region north and northeast of Svalbard. The mobile remote-sensing platform OCEANET was deployed aboard...

• Automated time-height-resolved air mass source attribution for profiling remote sensing applications.

  Authors:Martin Radenz, Patric Seifert, Holger Baars, Athena Augusta Floutsi, Zhenping Yin, and Johannes BühlFrom:Atmospheric Chemistry and Physics (Vol. 21, Issue 4) Peer-Reviewed

  Mar. 1, 2021281 words Brief article Height-resolved air mass source attribution is crucial for the evaluation of profiling ground-based remote sensing observations, especially when using lidar (light detection and ranging) to investigate different aerosol...

• Tropospheric and stratospheric wildfire smoke profiling with lidar: mass, surface area, CCN, and INP retrieval.

  Authors:Albert Ansmann, Kevin Ohneiser, Rodanthi-Elisavet Mamouri, Daniel A. Knopf, Igor Veselovskii, Holger Baars, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 12) Peer-Reviewed

  June 29, 2021284 words Brief article We present retrievals of tropospheric and stratospheric height profiles of particle mass, volume, surface area, and number concentrations in the case of wildfire smoke layers as well as estimates of smoke-related cloud...

• Depolarization and lidar ratios at 355, 532, and 1064 nm and microphysical properties of aged tropospheric and stratospheric Canadian wildfire smoke

  Authors:Moritz Haarig, Albert Ansmann, Holger Baars, Cristofer Jimenez, Igor Veselovskii, Ronny Engelmann, et al.From:Atmospheric Chemistry and Physics (Vol. 18, Issue 16) Peer-Reviewed

  Aug. 20, 2018258 words Brief article, Repor...

  We present spectrally resolved optical and microphysical properties of western Canadian wildfire smoke observed in a tropospheric layer from 5-6.5 km height and in a stratospheric layer from 15-16 km...

• Long-term profiling of aerosol light extinction, particle mass, cloud condensation nuclei, and ice-nucleating particle concentration over Dushanbe, Tajikistan, in Central Asia.

  Authors:Julian Hofer, Albert Ansmann, Dietrich Althausen, Ronny Engelmann, Holger Baars, Sabur F. Abdullaev, et al.From:Atmospheric Chemistry and Physics (Vol. 20, Issue 8) Peer-Reviewed

  Apr. 21, 2020498 words Article For the first time, continuous, vertically resolved long-term aerosol measurements were conducted with a state-of-the-art multiwavelength lidar over a Central Asian site. Such observations are urgently required in...

• Optical properties of Central Asian aerosol relevant for spaceborne lidar applications and aerosol typing at 355 and 532 nm.

  Authors:Julian Hofer, Albert Ansmann, Dietrich Althausen, Ronny Engelmann, Holger Baars, Khanneh Wadinga Fomba, et al.From:Atmospheric Chemistry and Physics (Vol. 20, Issue 15) Peer-Reviewed

  Aug. 6, 2020362 words Brief article For the first time, a dense data set of particle extinction-to-backscatter ratios (lidar ratios), linear depolarization ratios, and backscatter- and extinction-related Ãngström exponents for a Central Asian site are...

• The automated multiwavelength Raman polarization and water-vapor lidar Polly.sup.XT: the neXT generation

  Authors:Ronny Engelmann, Thomas Kanitz, Holger Baars, Birgit Heese, Dietrich Althausen, Annett Skupin, et al.From:Atmospheric Measurement Techniques (Vol. 9, Issue 4) Peer-Reviewed

  Apr. 25, 2016220 words Brief article The atmospheric science community demands autonomous and quality-assured vertically resolved measurements of aerosol and cloud properties. For this purpose, a portable lidar called Polly was developed at TROPOS in 2003....

• Validation of Aeolus wind products above the Atlantic Ocean.

  Authors:Holger Baars, Alina Herzog, Birgit Heese, Kevin Ohneiser, Karsten Hanbuch, Julian Hofer, et al.From:Atmospheric Measurement Techniques (Vol. 13, Issue 11) Peer-Reviewed

  Nov. 11, 2020397 words Brief article In August 2018, the first Doppler wind lidar in space called Atmospheric Laser Doppler Instrument (ALADIN) was launched on board the satellite Aeolus by the European Space Agency (ESA). Aeolus measures profiles of one...

• Helicopter-borne observations of the continental background aerosol in combination with remote sensing and ground-based measurements

  Authors:Birgit Wehner, Patric Seifert, Albert Ansmann, Holger Baars, Florian Ditas, Silvia Henning, et al.From:Atmospheric Chemistry and Physics (Vol. 18, Issue 2) Peer-Reviewed

  Jan. 31, 201858 words Brief article, Repor... Byline: Sebastian Dü,sing, Birgit Wehner, Patric Seifert, Albert Ansmann, Holger Baars, Florian Ditas, Silvia Henning, Nan Ma, Laurent Poulain, Holger Siebert, Alfred Wiedensohler, Andreas Macke To access,...