Results 251 to 260 of about 8,334 (293)

Aerosol optical thickness monitoring in the mediterranean

Journal of Aerosol Science, 1998
The Mediterranean atmosphere is often affected by large plumes of desert dust from Africa or the Middle-East. Although satellite monitoring of the aerosol optical thickness (AOT) is being performed from solar radiances recorded over sea-water (Husar et al.. 1997; Moulin et al., 1998).
Patrick Chazette, Gian Luigi Liberti
exaly   +3 more sources

Aerosol extinction and aerosol optical thickness in the atmosphere over the Baltic Sea determined with lidar

Journal of Aerosol Science, 2002
Abstract This work presents the results of investigations of aerosol extinction and aerosol optical thickness in the coastal areas of the southern Baltic Sea. The investigations were carried out under various weather conditions and in various seasons in 1996–2000. Aerosols carried on winds from 300°-N-60° can be regarded as of marine origin.
Tymon Zielinski
exaly   +2 more sources

Maritime aerosol optical thickness measured by handheld sun photometers

Remote Sensing of Environment, 2004
For several years, the NASA SIMBIOS Project has collected, processed, and archived optical aerosol data from shipboard sun photometers. The calibration, processing, quality control, and archival methodology for handheld sun photometers are described here, along with their deployment statistics.
Kirk Knobelspiesse, Christophe Pietras, Giulietta S Fargion   +2 more
exaly   +2 more sources

Variations in parameters of aerosol optical thickness in Dushanbe

Izvestiya, Atmospheric and Oceanic Physics, 2014
The results of studies of aerosol optical thickness (AOT) in Dushanbe conducted from July 2010 to March 2011 within the AERONET program are discussed. The statistical characteristics of AOT have been shown to significantly vary during dust intrusions. The seasonal variations in the dustiness of the atmosphere have been analyzed.
S. F. Abdullaev, V. A. Maslov, В. I. Nazarov, Т. Kh. Salikhov   +3 more
openaire   +1 more source

Cast Shadow Detection to Quantify the Aerosol Optical Thickness for Atmospheric Correction of High Spatial Resolution Optical Imagery [PDF]

Remote Sensing, 2018
The atmospheric correction of optical remote sensing data requires the determination of aerosol and gas optical properties. A method is presented which allows the detection of the aerosol scattering effects from optical remote sensing data at spatial ...
Daniel Schläpfer, Andreas Hueni, Rudolf Richter   +2 more
exaly   +2 more sources

Measuring aerosol optical thickness with a helicopter-based sunphotometer

IEEE Transactions on Geoscience and Remote Sensing, 2000
The use of airborne sunphotometers and radiometrically calibrated sensors with fixed wing remote sensing platforms is a reliable method for obtaining atmospherically corrected surface reflectance. The authors describe a variation of such an instrument for use with helicopters.
Charles L. Walthall, Rangasayi N. Halthore, Sara E. Loechel, Greg C. Elman, Brian L. Markham   +4 more
openaire   +1 more source

Aerosol Optical Thickness Measurement with Elevation-Scanning Lidar

Journal of Atmospheric and Oceanic Technology, 2015
AbstractHigh-accuracy measurement of aerosol optical thickness (AOT) τa with an elevation-scanning lidar is demonstrated and the results are compared with a collocated Cimel 318 sun photometer. Linear regression of the time-coincident data from a 2-week measurement campaign with the two instruments is found to be τalidar = (1.00 ± 0.17)τaphot + (0.025 ±
Pavel I. Ionov, Andrew K. Mollner
openaire   +1 more source

Stratospheric aerosol optical thickness measurements at 35°S

Nature, 1979
IN the stratosphere the attenuation in the radiance of a light beam is predominantly due to scattering by air molecules and aerosols, and absorption by ozone. For the height range 10–30 km, aerosols can account for at least 60% of the attenuation at 700 nm (ref. 1) and are responsible for most of the long and short term variations2.
S. A. YOUNG, W. G. ELFORD
openaire   +1 more source

The aerosol optical thickness retrieval from GOME spectra

IGARSS'97. 1997 IEEE International Geoscience and Remote Sensing Symposium Proceedings. Remote Sensing - A Scientific Vision for Sustainable Development, 2002
A prototype processor for the aerosol optical thickness retrieval and aerosol classification starting from GOME data has been developed. The aerosol classification is made choosing the minimum among the least squares residuals computed for different aerosol classes. For each pixel the output of processor gives the aerosol optical thickness, the aerosol
A. Bartoloni, M. Mochi, C. Serafini, M. Cervino, R. Guzzi, P. Torricella   +5 more
openaire   +1 more source

Spatial aspects of multi-sensor data fusion: Aerosol optical thickness

2007 IEEE International Geoscience and Remote Sensing Symposium, 2007
The Goddard Earth Sciences Data and Information Services Center (GES DISC) investigated the applicability and limitations of combining multi-sensor data through data fusion, to increase the usefulness of the multitude of NASA remote sensing data sets, and as part of a larger effort to integrate this capability in the GES-DISC Interactive Online ...
Gregory Leptoukh, Viktor Zubko, Arun Gopalan   +2 more
openaire   +1 more source