Results 1 to 10 of about 28,370 (186)

Remote sensing of atmospheric optical depth using a smartphone sun photometer. [PDF]

open access: yesPLoS ONE, 2014
In recent years, smart phones have been explored for making a variety of mobile measurements. Smart phones feature many advanced sensors such as cameras, GPS capability, and accelerometers within a handheld device that is portable, inexpensive, and ...
Tingting Cao, Jonathan E Thompson
doaj   +5 more sources

Comparison of AOD from CALIPSO, MODIS, and Sun Photometer under Different Conditions over Central China [PDF]

open access: yesScientific Reports, 2018
Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) provides three-dimensional information on aerosol optical properties across the globe.
Boming Liu   +5 more
doaj   +2 more sources

Evaluation of the new ESR network software for the retrieval of direct sun products from CIMEL CE318 and PREDE POM01 sun-sky radiometers [PDF]

open access: yesAtmospheric Chemistry and Physics, 2012
The European Skynet Radiometers network (EuroSkyRad or ESR) has been recently established as a research network of European PREDE sun-sky radiometers. Moreover, ESR is federated with SKYNET, an international network of PREDE sun-sky radiometers mostly ...
V. Estellés   +4 more
doaj   +4 more sources

Analysis of Visible/SWIR surface reflectance ratios for aerosol retrievals from satellite in Mexico City urban area [PDF]

open access: yesAtmospheric Chemistry and Physics, 2007
The surface reflectance ratio between the visible (VIS) and shortwave infrared (SWIR) radiation is an important quantity for the retrieval of the aerosol optical depth (&tau;<sub><i>a</i></sub>) from the MODIS sensor data ...
A. D. de Almeida Castanho   +5 more
doaj   +3 more sources

Sun photometer retrievals of Saharan dust properties over Barbados during SALTRACE [PDF]

open access: yesAtmospheric Chemistry and Physics, 2019
The Saharan Aerosol Long-Range Transport and Aerosol–Cloud-Interaction Experiment (SALTRACE) was devoted to the investigation of Saharan dust properties over the Caribbean. The campaign took place in June–July 2013.
C. Toledano   +14 more
doaj   +10 more sources

PM2.5 surface concentrations in southern West African urban areas based on sun photometer and satellite observations [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
Southern West Africa (SWA) is influenced by large numbers of aerosol particles of both anthropogenic and natural origins. Anthropogenic aerosol emissions are expected to increase in the future due to the economical growth of African megacities. In this
J.-F. Léon   +6 more
doaj   +1 more source

Casual Rerouting of AERONET Sun/Sky Photometers: Toward a New Network of Ground Measurements Dedicated to the Monitoring of Surface Properties?

open access: yesRemote Sensing, 2021
This paper presents an innovative method for observing vegetation health at a very high spatial resolution (~5 × 5 cm) and low cost by upgrading an existing Aerosol RObotic NETwork (AERONET) ground station dedicated to the observation of aerosols in the ...
Dominique Carrer   +11 more
doaj   +1 more source

Variation of Aerosol Optical Depth Measured by Sun Photometer at a Rural Site near Beijing during the 2017–2019 Period

open access: yesRemote Sensing, 2022
In recent years, the Beijing–Tianjin–Hebei region has become one of the worst areas for haze pollution in China. Sun photometers are widely used for aerosol optical property monitoring due to the advantages of fully automatic acquisition, simple ...
Xiu Wu   +5 more
doaj   +1 more source

Mobile Observations by Lidar, Sun Photometer and in Situ in North China Plain [PDF]

open access: yesEPJ Web of Conferences, 2020
A mobile laboratory integrating lidar, sun photometer and in situ instruments has been deployed to observe the aerosol spatial variability in North China Plain in May 2017. Results from the campaign are presented.
Popovici Ioana Elisabeta   +15 more
doaj   +1 more source

Screening Approach of the Langley Calibration Station for Sun Photometers in China

open access: yesAtmosphere, 2023
A sun photometer is a type of photometer that points at the sun, and it has been playing an increasingly important role in characterizing aerosols across the world.
Lina Xun   +4 more
doaj   +1 more source

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