J
Julian Hofer
Researcher at Leibniz Association
Publications - 44
Citations - 876
Julian Hofer is an academic researcher from Leibniz Association. The author has contributed to research in topics: Aerosol & Lidar. The author has an hindex of 9, co-authored 36 publications receiving 429 citations.
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Journal ArticleDOI
An overview of the first decade of Polly NET : an emerging network of automated Raman-polarization lidars for continuous aerosol profiling
Holger Baars,Thomas Kanitz,Thomas Kanitz,Ronny Engelmann,Dietrich Althausen,Birgit Heese,Mika Komppula,Jana Preißler,Matthias Tesche,Matthias Tesche,Albert Ansmann,Ulla Wandinger,Jae-Hyun Lim,Joon Young Ahn,Iwona S. Stachlewska,Vassilis Amiridis,Eleni Marinou,Patric Seifert,Julian Hofer,Annett Skupin,Florian Schneider,Stephanie Bohlmann,Andreas Foth,Andreas Foth,Sebastian Bley,A. Pfüller,Eleni Giannakaki,Heikki Lihavainen,Yrjö Viisanen,Rakesh K. Hooda,Rakesh K. Hooda,Sergio Pereira,Daniele Bortoli,Frank Wagner,Ina Mattis,Lucja Janicka,Krzysztof M. Markowicz,Peggy Achtert,Peggy Achtert,Paulo Artaxo,Theotonio Pauliquevis,Rodrigo Augusto Ferreira de Souza,Ved Prakesh Sharma,Pieter G. van Zyl,Johan P. Beukes,Junying Sun,Erich G. Rohwer,Ruru Deng,Rodanthi-Elisavet Mamouri,Felix Zamorano +49 more
TL;DR: PollyNET as mentioned in this paper consists of portable, remote-controlled multiwavelength-polarization-Raman lidars (Polly) for automated and continuous 24/7 observations of clouds and aerosols.
Journal ArticleDOI
Overview of the MOSAiC expedition—Atmosphere
Matthew D. Shupe,Markus Rex,Byron Blomquist,P. Ola G. Persson,Julia Schmale,Taneil Uttal,Dietrich Althausen,Hélène Angot,Stephen D. Archer,Ludovic Bariteau,Ivo Beck,John Bilberry,Silvia Bucci,Clifton S. Buck,Matthew Boyer,Zoé Brasseur,Ian M. Brooks,Radiance Calmer,John J. Cassano,Vagner Castro,David Chu,D. Costa,Christopher J. Cox,Jessie M. Creamean,Susanne Crewell,Sandro Dahlke,Ellen Damm,Gijs de Boer,H. Deckelmann,Klaus Dethloff,Marina Dütsch,Kerstin Ebell,André Ehrlich,Jody Ellis,Ronny Engelmann,Allison A. Fong,Markus M. Frey,Michael Gallagher,Laurens Ganzeveld,Rolf Gradinger,Jürgen Graeser,Vernon Greenamyer,Hannes Griesche,Steele Griffiths,Jonathan D. Hamilton,Günther Heinemann,Detlev Helmig,Andreas Herber,Céline Heuzé,Julian Hofer,Todd Houchens,Dean Howard,Jun Inoue,Hans-Werner Jacobi,Ralf Jaiser,Tuija Jokinen,Olivier Jourdan,Gina Jozef,Wessley King,Amélie Kirchgaessner,Marcus Klingebiel,Misha Krassovski,Thomas Krumpen,Astrid Lampert,William M. Landing,Tiia Laurila,D. Lawrence,Michael Lonardi,Brice Loose,Christof Lüpkes,Maximilian Maahn,Andreas Macke,Wieslaw Maslowski,Chris M. Marsay,Marion Maturilli,Mario Mech,Sara M. Morris,Manuel Moser,Marcel Nicolaus,Paul Ortega,J. Osborn,Falk Pätzold,Donald K. Perovich,Tuukka Petäjä,Christian Pilz,Roberta Pirazzini,Kevin Posman,Heath Powers,Kerri A. Pratt,Andrea Preusser,Lauriane L. J. Quéléver,Martin Radenz,Benjamin Rabe,Annette Rinke,Torsten Sachs,A. Schulz,Holger Siebert,Tércio Pessoa Tabosa e Silva,Amy Solomon,Anja Sommerfeld,Gunnar Spreen,Mark P. Stephens,Andreas Stohl,Gunilla Svensson,Janek Uin,Juarez Viegas,Christiane Voigt,Peter von der Gathen,Birgit Wehner,Jeffrey M. Welker,Manfred Wendisch,Martin Werner,Zhouqing Xie,Fan Ming yue +113 more
TL;DR: The MOSAiC program as mentioned in this paper was organized into four subgroups: atmospheric state, clouds and precipitation, gases and aerosols, and energy budgets, using a variety of approaches, and across multiple scales.
Journal ArticleDOI
Long-term profiling of mineral dust and pollution aerosol with multiwavelength polarization Raman lidar at the Central Asian site of Dushanbe, Tajikistan: case studies
Julian Hofer,Dietrich Althausen,Sabur F. Abdullaev,Abduvosit N. Makhmudov,Bakhron I. Nazarov,Georg Schettler,Ronny Engelmann,Holger Baars,K. Wadinga Fomba,K. Müller,Bernd Heinold,Konrad Kandler,Albert Ansmann +12 more
TL;DR: For the first time, continuous vertically resolved aerosol measurements were performed by lidar in Tajikistan, Central Asia, from March 2015 to August 2016 as mentioned in this paper, where a sun photometer was also operated co-located with the lidar.
Journal ArticleDOI
The unprecedented 2017–2018 stratospheric smoke event: decay phase and aerosol properties observed with the EARLINET
Holger Baars,Albert Ansmann,Kevin Ohneiser,Moritz Haarig,Ronny Engelmann,Dietrich Althausen,Ingrid Hanssen,Michael Gausa,Aleksander Pietruczuk,Artur Szkop,Iwona S. Stachlewska,Dongxiang Wang,Jens Reichardt,Annett Skupin,Ina Mattis,Thomas Trickl,Hannes Vogelmann,Francisco Navas-Guzmán,Alexander Haefele,Karen Acheson,Albert A. Ruth,Boyan Tatarov,Detlef Müller,Qiaoyun Hu,Thierry Podvin,Philippe Goloub,Igor Veselovskii,Christophe Pietras,Martial Haeffelin,Patrick Fréville,Michaël Sicard,Adolfo Comerón,Alfonso Javier Fernández García,Francisco Molero Menéndez,Carmen Córdoba-Jabonero,Juan Luis Guerrero-Rascado,Lucas Alados-Arboledas,Daniele Bortoli,Maria João Costa,Davide Dionisi,G. L. Liberti,Xuan Wang,Alessia Sannino,Nikolaos Papagiannopoulos,Antonella Boselli,Lucia Mona,Giuseppe D'Amico,Salvatore Romano,Maria Rita Perrone,Livio Belegante,Doina Nicolae,Ivan Grigorov,Anna Gialitaki,Vassilis Amiridis,Ourania Soupiona,Alexandros Papayannis,Rodanthi Mamouri,Argyro Nisantzi,Birgit Heese,Julian Hofer,Yoav Y. Schechner,Ulla Wandinger,Gelsomina Pappalardo +62 more
TL;DR: In this article, the decay phase of an unprecedented, record-breaking stratospheric perturbation caused by wildfire smoke is reported and discussed in terms of geometrical, optical, and microphysical aerosol properties.
Journal ArticleDOI
Dust mass, cloud condensation nuclei, and ice-nucleating particle profiling with polarization lidar: updated POLIPHON conversion factors from global AERONET analysis
Albert Ansmann,Rodanthi-Elisavet Mamouri,Julian Hofer,Holger Baars,Dietrich Althausen,Sabur F. Abdullaev +5 more
TL;DR: In this paper, the authors present an extended set of dust conversion factors considering all relevant deserts around the globe and apply the new conversion factor set to a dust measurement with polarization lidar in Dushanbe, Tajikistan, in central Asia.