A
Alex Papayannis
Researcher at National Technical University of Athens
Publications - 16
Citations - 239
Alex Papayannis is an academic researcher from National Technical University of Athens. The author has contributed to research in topics: Lidar & Mineral dust. The author has an hindex of 7, co-authored 16 publications receiving 193 citations. Previous affiliations of Alex Papayannis include Kuwait University.
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Journal ArticleDOI
Lidar-Radiometer Inversion Code (LIRIC) for the retrieval of vertical aerosol properties from combined lidar/radiometer data: development and distribution in EARLINET
Anatoli Chaikovsky,Oleg Dubovik,Brent N. Holben,Andrey Bril,Philippe Goloub,Didier Tanré,Gelsomina Pappalardo,Ulla Wandinger,Ludmila I. Chaikovskaya,Sergey Denisov,J. O. Grudo,Anton Lopatin,Yana Karol,Tatsiana Lapyonok,Vassilis Amiridis,Albert Ansmann,Arnoud Apituley,Lucas Allados-Arboledas,Ioannis Binietoglou,Antonella Boselli,Giuseppe D'Amico,Volker Freudenthaler,David M. Giles,María José Granados-Muñoz,Panayotis Kokkalis,Doina Nicolae,Sergey Oshchepkov,Alex Papayannis,Maria Rita Perrone,Alexander Pietruczuk,Francesc Rocadenbosch,Michaël Sicard,Ilya Slutsker,Camelia Talianu,Ferdinando De Tomasi,Alexandra Tsekeri,Janet Wagner,Xuan Wang +37 more
TL;DR: In this article, a detailed description of LIRIC (LIdar-Radiometer Inversion Code) algorithm for simultaneous processing of coincident lidar and radiometric (sun photometric) observations for the retrieval of the aerosol concentration vertical profiles is presented.
Journal ArticleDOI
An automatic observation-based aerosol typing method for EARLINET
Nikolaos Papagiannopoulos,Lucia Mona,Aldo Amodeo,Giuseppe D'Amico,Pilar Gumà Claramunt,Gelsomina Pappalardo,Lucas Alados-Arboledas,Juan Luis Guerrero-Rascado,Vassilis Amiridis,Panagiotis Kokkalis,Arnoud Apituley,Holger Baars,Anja Schwarz,Ulla Wandinger,Ioannis Binietoglou,Doina Nicolae,Daniele Bortoli,Adolfo Comerón,Alejandro Rodríguez-Gómez,Michaël Sicard,Alex Papayannis,Matthias Wiegner +21 more
TL;DR: The presented algorithm has proven to be highly versatile as it adapts to changes in the size of the training dataset and the number of aerosol classes and classifying parameters and is extremely suitable for the implementation within the single calculus chain (SCC), the EARLINET centralized processing suite.
Journal ArticleDOI
Assessment of lidar depolarization uncertainty by means of a polarimetric lidar simulator
Juan Antonio Bravo-Aranda,Juan Antonio Bravo-Aranda,Livio Belegante,Volker Freudenthaler,Lucas Alados-Arboledas,Doina Nicolae,María José Granados-Muñoz,Juan Luis Guerrero-Rascado,Aldo Amodeo,Giusseppe D'Amico,Ronny Engelmann,Gelsomina Pappalardo,P. Kokkalis,Rodanthy Mamouri,Alex Papayannis,Francisco Navas-Guzmán,Francisco Navas-Guzmán,Francisco Olmo,Ulla Wandinger,Francesco Amato,Martial Haeffelin +20 more
TL;DR: In this paper, the authors present a new tool to assess the systematic error of the volume linear depolarization ratio (δ), combining the Stokes-Muller formalism and the complete sampling of the error space using the lidar model presented in Freudenthaler.
Journal ArticleDOI
An EARLINET Early Warning System for atmospheric aerosol aviation hazards
Nikolaos Papagiannopoulos,Giuseppe D'Amico,Anna Gialitaki,Nicolae Ajtai,Lucas Alados-Arboledas,Aldo Amodeo,Vassilis Amiridis,Holger Baars,Dimitris Balis,Ioannis Binietoglou,Adolfo Comerón,Davide Dionisi,Alfredo Falconieri,Patrick Fréville,Anna Kampouri,Inna Mattis,Zoran Mijić,Francisco Molero,Alex Papayannis,Gelsomina Pappalardo,Alejandro Rodríguez-Gómez,Stavros Solomos,Lucia Mona +22 more
TL;DR: In this paper, a stand-alone lidar-based method for detecting airborne hazards for aviation in near-real-time (NRT) is presented, where a polarization lidar allows for the identification of irregular-shaped particles such as volcanic dust and desert dust.
Saharan Dust Outbreaks Towards Europe: 3 Years of Systematic Observations by the European LIDAR Network in the Frame of the Earlinet Project (2000-2003)
Alex Papayannis,Matthias Alpers,Dimitris Balis,Jens Bösenberg,Anatoli Chaikovsky,Ferdinando De Tomasi,Aarne Haagaard,Volker Matthias,Ina Mattis,Valentin Mitev,Slobodan Nickovic,Gelsomina Pappalardo,Jacques Pelon,Carlos Pérez,Gianluca Pisani,Sylwester Puchalski,Dimitar Stoyanov,Vincenzo Rizi,Laurent Sauvage,Valentin Simeonov,Thomas Trickl,Geraint Vaughan,Matthias Wiegner,Anna D. Castahno +23 more
TL;DR: In this paper, a three-year period (2000-2003) of 90 Saharan dust outbreaks over Europe were monitored by a coordinated aerosol lidar network in the frame of the EARLINET project.