Results 1 to 10 of about 3,898 (146)

Aerosol optical depth (AOD): spatial and temporal variations and association with meteorological covariates in Taklimakan desert, China [PDF]

open access: yesPeerJ, 2021
Aerosol optical depth (AOD) is a key parameter that reflects aerosol characteristics. However, research on the AOD of dust aerosols and various environmental variables is scarce. Therefore, we conducted in-depth studies on the distributions and variations of AOD in the Taklimakan Desert and its margins, China.
Jinglong Li   +3 more
openaire   +3 more sources

Reducing cloud contamination in aerosol optical depth (AOD) measurements [PDF]

open access: yesAtmospheric Measurement Techniques, 2021
We propose a new cloud screening method for sun photometry that is designed to effectively filter thin clouds. Our method is based on a k-nearest-neighbour algorithm instead of scanning time series of aerosol optical depth.
V. Schenzinger, A. Kreuter, A. Kreuter
doaj   +3 more sources

Comparative study of aerosol optical depth satellite data with earth’s observations [PDF]

open access: yesDesert, 2022
This research seeks to investigate the consistency of satellite data and the information obtained from the ground meteorological stations in Iran. In this study, the Aerosol Optical Depth (AOD) data of Moderate Resolution Imaging Spectroradiometer (MODIS)
M. Araghizadeh, S.A. Masoodian
doaj   +1 more source

Assimilating aerosol optical properties related to size and absorption from POLDER/PARASOL with an ensemble data assimilation system [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
A data assimilation system for aerosol, based on an ensemble Kalman filter, has been developed for the ECHAM – Hamburg Aerosol Model (ECHAM-HAM) global aerosol model and applied to POLarization and Directionality of the Earth's Reflectances (POLDER ...
A. Tsikerdekis   +3 more
doaj   +1 more source

Variation and Driving Factor of Aerosol Optical Depth over the South China Sea from 1980 to 2020

open access: yesAtmosphere, 2022
Spatial and temporal variation of aerosol optical depth (AOD) and optical depth of different aerosol types derived from the second Modern-Era Retrospective analysis for Research and Applications (MERRA-2) over the South China Sea (SCS) between 1980 and ...
Enwei Sun   +5 more
doaj   +1 more source

Aerosol Optical Properties and Type Retrieval via Machine Learning and an All-Sky Imager

open access: yesAtmosphere, 2023
This study investigates the applicability of using the sky information from an all-sky imager (ASI) to retrieve aerosol optical properties and type. Sky information from the ASI, in terms of Red-Green-Blue (RGB) channels and sun saturation area, are ...
Stavros-Andreas Logothetis   +7 more
doaj   +1 more source

Improving the sectional Model for Simulating Aerosol Interactions and Chemistry (MOSAIC) aerosols of the Weather Research and Forecasting-Chemistry (WRF-Chem) model with the revised Gridpoint Statistical Interpolation system and multi-wavelength aerosol optical measurements: the dust aerosol observation campaign at Kashi, near the Taklimakan Desert, northwestern China [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
The Gridpoint Statistical Interpolation data assimilation (DA) system was developed for the four size bin sectional Model for Simulating Aerosol Interactions and Chemistry (MOSAIC) aerosol mechanism in the Weather Research and Forecasting-Chemistry (WRF ...
W. Chang   +4 more
doaj   +1 more source

Measuring Aerosol Optical Depth (AOD) and Aerosol Profiles Simultaneously with a Camera Lidar [PDF]

open access: yesEPJ Web of Conferences, 2016
CLidar or camera lidar is a simple, inexpensive technique to measure nighttime tropospheric aerosol profiles. Stars in the raw data images used in the CLidar analysis can also be used to calculate aerosol optical depth simultaneously. A single star can be used with the Langley method or multiple star pairs can be used to reduce the error. The estimated
Barnes John   +2 more
openaire   +2 more sources

Aerosol optical depth (AOD) retrieval using simultaneous GOES-East and GOES-West reflected radiances over the western United States [PDF]

open access: yesAtmospheric Measurement Techniques, 2013
Aerosol optical depth (AOD) in the western United States is observed independently by both the (Geostationary Operational Environmental Satellites) GOES-East and GOES-West imagers.
H. Zhang   +4 more
doaj   +1 more source

Interannual and Seasonal Variation of Optical and Microphysical Properties of Aerosol in the Baikal Region

open access: yesAtmosphere, 2022
The paper analyzes the interannual, seasonal variations of the optical and microphysical characteristics of aerosol in the Baikal region atmosphere according to measurements using the CIMEL sun photometer of the AERONET network at Tory station and ...
Ayuna Dementeva   +3 more
doaj   +1 more source

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