Results 61 to 70 of about 1,442 (137)

Validation of Long-Term Global Aerosol Climatology Project Optical Thickness Retrievals Using AERONET and MODIS Data

Remote Sensing, 2015
A comprehensive set of monthly mean aerosol optical thickness (AOT) data from coastal and island AErosol RObotic NETwork (AERONET) stations is used to evaluate Global Aerosol Climatology Project (GACP) retrievals for the period 1995–2009 during which ...
Igor V. Geogdzhayev, Michael I. Mishchenko   +1 more
doaj   +1 more source

Hourly PM2.5 Estimates From TEMPO and ABI Aerosol Retrievals Using Geographically Weighted Regression

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract The Tropospheric Emissions: Monitoring of Pollution (TEMPO) mission, launched in April 2023 as the first geostationary sensor dedicated to monitoring air quality over North America, provides both traditional aerosol optical depth (AOD) retrievals and novel aerosol layer height (ALH) products.
Hai Zhang, Shobha Kondragunta, Zigang Wei   +2 more
wiley   +1 more source

An Assessment of Lunar Photometry in AERONET

Abstract. AERONET has been acquiring direct beam lunar observations at six wavelengths from 440 to 1640 nm from most newer model T CIMEL sun-sky radiometers in the network for many years and producing a night-time AOD data set, which currently includes observations at 492 sites dating back as far as 2014.
Joel Schafer, Thomas F. Eck, Ilya Slutsker, Pawan Gupta, Mikhail Sorokin, Alexander Sinyuk, Alexander Smirnov   +6 more
openaire   +1 more source

Evaluation of the MERIS aerosol product over land with AERONET [PDF]

Atmospheric Chemistry and Physics, 2008
Abstract. The Medium Resolution Imaging Spectrometer (MERIS) launched in February 2002 on-board the ENVISAT spacecraft is making global observations of top-of-atmosphere (TOA) radiances. Aerosol optical properties are retrieved over land using Look-Up Table (LUT) based algorithm and surface reflectances in the blue and the red spectral regions.
Vidot, J., Santer, R., Aznay, O.
openaire   +4 more sources

Characterizing Aerosol Modes and Uncertainty in VIIRS Aerosol Optical Depth Retrievals Over Africa Using AERONET

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract Accurate characterization of aerosol optical depth (AOD) uncertainties is critical for air quality assessment, data assimilation (DA), and environmental studies. In this study, we evaluate two sets of AOD products retrieved from Suomi‐NPP VIIRS over Africa.
Shima Bahramvash‐Shams, Robert C. Levy, Rajesh Kumar, Helen Worden, Pieternel F. Levelt   +4 more
wiley   +1 more source

Estimation of aerosol complex refractive indices for both fine and coarse modes simultaneously based on AERONET remote sensing products [PDF]

Atmospheric Measurement Techniques, 2017
Climate change assessment, especially model evaluation, requires a better understanding of complex refractive indices (CRIs) of atmospheric aerosols – separately for both fine and coarse modes.
Y. Zhang, Z. Li, Y. Zhang, D. Li, L. Qie, H. Che, H. Xu   +6 more
doaj   +1 more source

Global Diurnal Variation Characteristics of Aerosol Optical Depth From 32 Years of AERONET Observations

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Aerosols are ubiquitous microscopic particles in the atmosphere, and their diurnal variation characteristics reflect short‐term atmospheric changes that are crucial for climate monitoring and prediction. However, satellite, ground‐based, and reanalysis systems cannot simultaneously provide observational authenticity together with full temporal–
Yujia Cao, Cheng Chen, Donghui Li, Siyao Zhai, Yan Wang, Zhihui Wang, Ke Xiao, Haixiao Yu   +7 more
wiley   +1 more source

COMPARISON OF THREE TYPES OF AEROSOL PRODUCTS DURING 2015–2017 IN CHINA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
In this study, we use sunphotometer (AERONET) data as reference to evaluate MODIS, Himawari-08, and MERRA-2 aerosol products over China. AERONET data from Beijing, Xianghe, Xuzhou, Taihu and Hong Kong are used.
S. Li, F. Zhang, F. Zhang, Q.-R. Yu, K. L. Chan, C. Hou, R. Guo, M. Duan, M. Duan   +8 more
doaj   +1 more source

Observed and Modeled Changes in Boundary‐Layer and Surface‐Level Actinic Flux Due To Wildfire Smoke Plumes in the California Central Valley in Summer 2018

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract Wildfire smoke is increasingly degrading U.S. air quality via the emission and transport of pollutants. Smoke's direct role as a pollutant is well‐documented; however, smoke also affects pollutant concentration indirectly by changing the shortwave actinic flux necessary for photochemical reactions.
K. A. Corwin, S. R. Hall, K. Ullmann, C. A. Corr, J. R. Pierce, E. V. Fischer   +5 more
wiley   +1 more source

Radiative forcing bias calculation based on COSMO (Core-Shell Mie model Optimization) and AERONET data

npj Climate and Atmospheric Science, 2023
Direct radiative forcing (DRF) of aerosols is driven by aerosol concentration, size, and mixing state, and solar radiation. This work introduces Core-Shell Mie model optimization (COSMO) to compute top of the atmosphere (TOA) forcing based on inversely ...
Pravash Tiwari, Jason Blake Cohen, Xinying Wang, Shuo Wang, Kai Qin   +4 more
doaj   +1 more source