Zobrazeno 1 - 10
of 91
pro vyhledávání: '"K. Eleftheratos"'
Autor:
A. Masoom, I. Fountoulakis, S. Kazadzis, I.-P. Raptis, A. Kampouri, B. E. Psiloglou, D. Kouklaki, K. Papachristopoulou, E. Marinou, S. Solomos, A. Gialitaki, D. Founda, V. Salamalikis, D. Kaskaoutis, N. Kouremeti, N. Mihalopoulos, V. Amiridis, A. Kazantzidis, A. Papayannis, C. S. Zerefos, K. Eleftheratos
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 8487-8514 (2023)
In August 2021, a historic heatwave was recorded in Greece which resulted in extreme wildfire events that strongly affected the air quality over the city of Athens. Saharan dust was also transferred over Greece on certain days of the same period due
Externí odkaz:
https://doaj.org/article/83f24193d79e4d7aa63a4948f07d903c
Autor:
K. Eleftheratos, J. Kapsomenakis, I. Fountoulakis, C. S. Zerefos, P. Jöckel, M. Dameris, A. F. Bais, G. Bernhard, D. Kouklaki, K. Tourpali, S. Stierle, J. B. Liley, C. Brogniez, F. Auriol, H. Diémoz, S. Simic, I. Petropavlovskikh, K. Lakkala, K. Douvis
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 12827-12855 (2022)
This study analyses the variability and trends of ultraviolet-B (UV-B, wavelength 280–320 nm) radiation that can cause DNA damage. The variability and trends caused by climate change due to enhanced greenhouse gas (GHG) concentrations. The analysis
Externí odkaz:
https://doaj.org/article/96e9362f778e4d81afbdc6f279838cf6
Autor:
P. G. Kosmopoulos, S. Kazadzis, A. W. Schmalwieser, P. I. Raptis, K. Papachristopoulou, I. Fountoulakis, A. Masoom, A. F. Bais, J. Bilbao, M. Blumthaler, A. Kreuter, A. M. Siani, K. Eleftheratos, C. Topaloglou, J. Gröbner, B. Johnsen, T. M. Svendby, J. M. Vilaplana, L. Doppler, A. R. Webb, M. Khazova, H. De Backer, A. Heikkilä, K. Lakkala, J. Jaroslawski, C. Meleti, H. Diémoz, G. Hülsen, B. Klotz, J. Rimmer, C. Kontoes
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 5657-5699 (2021)
This study introduces an Earth observation (EO)-based system which is capable of operationally estimating and continuously monitoring the ultraviolet index (UVI) in Europe. UVIOS (i.e., UV-Index Operating System) exploits a synergy of radiative trans
Externí odkaz:
https://doaj.org/article/f80a9bc3de304fb69fc48ef980fbf811
Autor:
K. Gierens, K. Eleftheratos
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 3733-3746 (2019)
We present a novel retrieval for upper-tropospheric humidity (UTH) from High-resolution Infrared Radiation Sounder (HIRS) channel 12 radiances that successfully bridges the wavelength change from 6.7 to 6.5 µm that occurred from HIRS/2 on National
Externí odkaz:
https://doaj.org/article/65eb2183018b472fa236bae16eceed50
Autor:
K. Eleftheratos, C. S. Zerefos, D. S. Balis, M.-E. Koukouli, J. Kapsomenakis, D. G. Loyola, P. Valks, M. Coldewey-Egbers, C. Lerot, S. M. Frith, A. S. Haslerud, I. S. A. Isaksen, S. Hassinen
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 987-1011 (2019)
In this work we present evidence that quasi-cyclical perturbations in total ozone (quasi-biennial oscillation – QBO, El Niño–Southern Oscillation – ENSO, and North Atlantic Oscillation – NAO) can be used as independent proxies in evaluating
Externí odkaz:
https://doaj.org/article/74f551669bc341259df1920038d17bf2
Autor:
C. Zerefos, J. Kapsomenakis, K. Eleftheratos, K. Tourpali, I. Petropavlovskikh, D. Hubert, S. Godin-Beekmann, W. Steinbrecht, S. Frith, V. Sofieva, B. Hassler
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 6427-6440 (2018)
This paper is focusing on the representativeness of single lidar stations for zonally averaged ozone profile variations over the middle and upper stratosphere. From the lower to the upper stratosphere, ozone profiles from single or grouped lidar s
Externí odkaz:
https://doaj.org/article/4b309d46ac124a2e84cdc63ecc52d7c2
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 939-948 (2018)
High-resolution Infrared Radiation Sounder (HIRS) brightness temperatures at channel 12 (T12) can be used to assess the water vapour content of the upper troposphere. The transition from HIRS/2 to HIRS/3 in 1999 involved a shift in the central wav
Externí odkaz:
https://doaj.org/article/ad461e61acac4556b54efda7520db8c0
Autor:
K. Gierens, K. Eleftheratos
Publikováno v:
Atmospheric Measurement Techniques, Vol 10, Iss 2, Pp 681-693 (2017)
In the present study we explore the capability of the intercalibrated HIRS brightness temperature data at channel 12 (the HIRS water vapour channel; T12) to reproduce ice supersaturation in the upper troposphere during the period 1979–2014. Focus i
Externí odkaz:
https://doaj.org/article/eb29127419b04803824a6b18181bcece
Autor:
C. S. Zerefos, K. Eleftheratos, J. Kapsomenakis, S. Solomos, A. Inness, D. Balis, A. Redondas, H. Eskes, M. Allaart, V. Amiridis, A. Dahlback, V. De Bock, H. Diémoz, R. Engelmann, P. Eriksen, V. Fioletov, J. Gröbner, A. Heikkilä, I. Petropavlovskikh, J. Jarosławski, W. Josefsson, T. Karppinen, U. Köhler, C. Meleti, C. Repapis, J. Rimmer, V. Savinykh, V. Shirotov, A. M. Siani, A. R. D. Smedley, M. Stanek, R. Stübi
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Iss 1, Pp 551-574 (2017)
This study examines the adequacy of the existing Brewer network to supplement other networks from the ground and space to detect SO2 plumes of volcanic origin. It was found that large volcanic eruptions of the last decade in the Northern Hemisphere h
Externí odkaz:
https://doaj.org/article/3e59dd6eb79049409c666f39ec4dc23f
Publikováno v:
Atmospheric Measurement Techniques, Vol 9, Iss 4, Pp 1871-1888 (2016)
A MkIV Brewer spectrophotometer has been operating in Athens since 2004. Direct-sun measurements originally scheduled for nitrogen dioxide retrievals were reprocessed to provide aerosol optical depths (AODs) at a wavelength of about 440 nm. A novel r
Externí odkaz:
https://doaj.org/article/7330d239d49c4cb9b82495fc4ae4036c