Results 41 to 50 of about 28,409 (225)

Column-integrated aerosol microphysical properties from AERONET Sun photometer over southwestern Spain [PDF]

Atmospheric Chemistry and Physics, 2011
The aim of the present work is to carry out a detailed analysis of columnar microphysical properties obtained from Cimel sun-photometer measurements in the Southwest of Spain within the frame of the Aerosol Robotic Network (AERONET) – Iberian Network for
N. Prats, V. E. Cachorro, A. Berjón, C. Toledano, A. M. De Frutos   +4 more
doaj   +1 more source

Increase of Lidar-Sun Photometer System Efficiency of Functioning

Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, 2020
Досліджено питання про оцінку ефективності функціонування лідарного-фотометричних систем. Лідарні системи як наземного, так і космічного призначення проходять первинні перевірку та валідацію отриманих даних при проведенні наземних вимірювань і формування нових критеріїв ефективності функціонування лідарно-фотометричних систем зберігає актуальність для ...
H. H. Asadov, U. F. Mammadova
openaire   +3 more sources

Sun/Moon photometer for Cherenkov Telescope Array – first results [PDF]

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017), 2017
Determination of the energy and flux of the gamma photons by Imaging Atmospheric Cherenkov Technique is strongly dependent on optical properties of the atmosphere. Therefore, atmospheric monitoring during the future observations of the Cherenkov Telescope Array (CTA) as well as anticipated long-term monitoring in order to characterize overal properties
Juryšek, J. (Jakub), Prouza, M. (Michael)   +1 more
openaire   +2 more sources

Lidar Ratio Regional Transfer Method for Extinction Coefficient Accuracy Improvement in Lidar Networks

Remote Sensing, 2022
Lidar networks are essential to study the three-dimensional distribution of aerosols on a regional scale. At present, both Mie-scattering lidar (ML) and advanced lidars are being used in lidar networks.
Yicheng Tong, Sijie Chen, Da Xiao, Kai Zhang, Jing Fang, Chong Liu, Yibing Shen, Dong Liu   +7 more
doaj   +1 more source

Monitoring of the Eyjafjallajökull volcanic aerosol plume over the Iberian Peninsula by means of four EARLINET lidar stations [PDF]

Atmospheric Chemistry and Physics, 2012
Lidar and sun-photometer measurements were performed intensively over the Iberian Peninsula (IP) during the eruption of the Eyjafjallajökull volcano (Iceland) in April–May 2010.
M. Sicard, J. L. Guerrero-Rascado, F. Navas-Guzmán, J. Preißler, F. Molero, S. Tomás, J. A. Bravo-Aranda, A. Comerón, F. Rocadenbosch, F. Wagner, M. Pujadas, L. Alados-Arboledas   +11 more
doaj   +1 more source

Urban Visible/SWIR surface reflectance ratios from satellite and sun photometer measurements in Mexico City

, 2007
International audienceThe surface reflectance ratio between the visible (VIS) and shortwave infrared (SWIR) radiation is an important quantity for the retrieval of the aerosol optical depth (?a) from the MODIS sensor data. Based on empirically determined
De Almeida Castanho, A. D., Herold, M., Ichoku, C., Martins, V., Molina, L. T., Prinn, R.   +5 more
core   +2 more sources

Relative humidity vertical profiling using lidar-based synergistic methods in the framework of the Hygra-CD campaign [PDF]

, 2018
Accurate continuous measurements of relative hu- midity (RH) vertical profiles in the lower troposphere have become a significant scientific challenge. In recent years a synergy of various ground-based remote sensing instru- ments have been successfully ...
Baldasano Recio, José María, Banks, Robert F., Binietoglou, Ioannis, Labzovskii, Lev D., Papayannis, Alexander   +4 more
core   +2 more sources

Airborne tracking sunphotometer apparatus and system [PDF]

, 1987
An airborne tracking Sun photometer apparatus has a rotatable dome. An azimuth drive motor is connected to rotate the dome. The dome has an equatorial slot. A cylindrical housing is pivotally mounted inside the dome at the equatorial slot.
Matsumoto, Yutaka, Mina, Cesar, Russell, Philip B., Vanark, William B.   +3 more
core   +1 more source

Effect of Vapor Pressure Deficit on Nutrient Uptake and Growth of Four Tomato Varieties Grown Hydroponically at Low Nutrient Concentrations

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background Marginal water sources, such as wastewater, have been proposed as the basis for hydroponic nutrient solutions to improve the resource efficiency of greenhouse‐based tomato production. Such water sources are often low in plant‐available nutrient concentrations, and uptake and use efficiency of these nutrients may vary widely among ...
Theresa Detering, Jörn Germer, Folkard Asch   +2 more
wiley   +1 more source

Comparison of aerosol optical thickness with in situ visibility data over Cyprus [PDF]

Natural Hazards and Earth System Sciences, 2010
The monitoring of aerosol concentrations comprises a high environmental priority, particularly in urban areas. Remote sensing of atmospheric aerosol optical thickness (AOT) could be used to assess particulate matter levels at the ground.
A. Retalis, D. G. Hadjimitsis, S. Michaelides, F. Tymvios, N. Chrysoulakis, C. R. I. Clayton, K. Themistocleous   +6 more
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