Zobrazeno 1 - 10
of 514
pro vyhledávání: '"P. Kokkalis"'
Autor:
M. Gratsea, T. Bösch, P. Kokkalis, A. Richter, M. Vrekoussis, S. Kazadzis, A. Tsekeri, A. Papayannis, M. Mylonaki, V. Amiridis, N. Mihalopoulos, E. Gerasopoulos
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 749-767 (2021)
In this study, we report on the retrieval of aerosol extinction profiles from ground-based scattered sunlight multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements, carried out at Athens, Greece. It is the first time that ae
Externí odkaz:
https://doaj.org/article/8f341d3765ff47b280a99f45a9d608a0
Autor:
O. Soupiona, A. Papayannis, P. Kokkalis, R. Foskinis, G. Sánchez Hernández, P. Ortiz-Amezcua, M. Mylonaki, C.-A. Papanikolaou, N. Papagiannopoulos, S. Samaras, S. Groß, R.-E. Mamouri, L. Alados-Arboledas, A. Amodeo, B. Psiloglou
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 15147-15166 (2020)
Remote sensing measurements of aerosols using depolarization Raman lidar systems from four EARLINET (European Aerosol Research Lidar Network) stations are used for a comprehensive analysis of Saharan dust events over the Mediterranean basin in the pe
Externí odkaz:
https://doaj.org/article/f4ec661c896f4d27aabd93c64bc3ba41
Autor:
E. Giannakaki, P. Kokkalis, E. Marinou, N. S. Bartsotas, V. Amiridis, A. Ansmann, M. Komppula
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 893-905 (2020)
A new method, called ElEx (elastic extinction), is proposed for the estimation of extinction coefficient lidar profiles using only the information provided by the elastic and polarization channels of a lidar system. The method is applicable to lidar
Externí odkaz:
https://doaj.org/article/136bd650236848fb828804f59e223aba
Autor:
N. Papagiannopoulos, L. Mona, A. Amodeo, G. D'Amico, P. Gumà Claramunt, G. Pappalardo, L. Alados-Arboledas, J. L. Guerrero-Rascado, V. Amiridis, P. Kokkalis, A. Apituley, H. Baars, A. Schwarz, U. Wandinger, I. Binietoglou, D. Nicolae, D. Bortoli, A. Comerón, A. Rodríguez-Gómez, M. Sicard, A. Papayannis, M. Wiegner
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 15879-15901 (2018)
We present an automatic aerosol classification method based solely on the European Aerosol Research Lidar Network (EARLINET) intensive optical parameters with the aim of building a network-wide classification tool that could provide near-real-time
Externí odkaz:
https://doaj.org/article/367b029fe4784a069d72bd944e3f25f4
Autor:
D. Mamali, E. Marinou, J. Sciare, M. Pikridas, P. Kokkalis, M. Kottas, I. Binietoglou, A. Tsekeri, C. Keleshis, R. Engelmann, H. Baars, A. Ansmann, V. Amiridis, H. Russchenberg, G. Biskos
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 2897-2910 (2018)
In situ measurements using unmanned aerial vehicles (UAVs) and remote sensing observations can independently provide dense vertically resolved measurements of atmospheric aerosols, information which is strongly required in climate models. In both
Externí odkaz:
https://doaj.org/article/27e59f2a68704956af8a51bf7816fb20
Autor:
L. Belegante, J. A. Bravo-Aranda, V. Freudenthaler, D. Nicolae, A. Nemuc, D. Ene, L. Alados-Arboledas, A. Amodeo, G. Pappalardo, G. D'Amico, F. Amato, R. Engelmann, H. Baars, U. Wandinger, A. Papayannis, P. Kokkalis, S. N. Pereira
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 1119-1141 (2018)
Particle depolarization ratio retrieved from lidar measurements are commonly used for aerosol-typing studies, microphysical inversion, or mass concentration retrievals. The particle depolarization ratio is one of the primary parameters that can di
Externí odkaz:
https://doaj.org/article/daed7c1e7fac4713a39217db6cbe0394
Autor:
A. Tsekeri, A. Lopatin, V. Amiridis, E. Marinou, J. Igloffstein, N. Siomos, S. Solomos, P. Kokkalis, R. Engelmann, H. Baars, M. Gratsea, P. I. Raptis, I. Binietoglou, N. Mihalopoulos, N. Kalivitis, G. Kouvarakis, N. Bartsotas, G. Kallos, S. Basart, D. Schuettemeyer, U. Wandinger, A. Ansmann, A. P. Chaikovsky, O. Dubovik
Publikováno v:
Atmospheric Measurement Techniques, Vol 10, Pp 4995-5016 (2017)
The Generalized Aerosol Retrieval from Radiometer and Lidar Combined data algorithm (GARRLiC) and the LIdar-Radiometer Inversion Code (LIRIC) provide the opportunity to study the aerosol vertical distribution by combining ground-based lidar and su
Externí odkaz:
https://doaj.org/article/4aae17789b624f1e8718f3c8dbc156b0
We study the computational complexity of computing Bayes-Nash equilibria in first-price auctions with discrete value distributions and discrete bidding space, under general subjective beliefs. It is known that such auctions do not always have pure eq
Externí odkaz:
http://arxiv.org/abs/2402.12068
Autor:
P. Kokkalis
Publikováno v:
Atmospheric Measurement Techniques, Vol 10, Pp 3103-3115 (2017)
The mathematical formulation for the optical setup of a typical EARLINET lidar system is given here. The equations describing a lidar system from the emitted laser beam to the projection of the telescope aperture on the final receiving unit (i.e.,
Externí odkaz:
https://doaj.org/article/e76d7146b1b44eabb84b1c8965fc238a
Autor:
Andreas Panagopoulos, MD, PhD, Konstantina Solou, MD, MSc, Marios Nicolaides, MSc, Ioannis K. Triantafyllopoulos, MD, PhD, Antonis Kouzelis, MD, PhD, Zinon T. Kokkalis, MD, PhD
Publikováno v:
JSES Reviews, Reports, and Techniques, Vol 4, Iss 4, Pp 676-683 (2024)
Background: Unstable “extralateral” fractures of the distal clavicle (lateral to the coracoclavicular ligaments) are not distinguished in the Neer classification system and are commonly included with Neer IIb fractures. In the literature, there i
Externí odkaz:
https://doaj.org/article/6943e42bdb2142c082ee9b651d6173d8