Results 61 to 70 of about 4,017 (177)

Radiative forcing from anthropogenic sulfur and organic emissions reaching the stratosphere

Geophysical Research Letters, 2016
Stratospheric aerosols cool the Earth by scattering sunlight. Although sulfuric acid dominates the stratospheric aerosol, this study finds that organic material in the lowermost stratosphere contributes 30–40% of the nonvolcanic stratospheric aerosol ...
Pengfei Yu, Daniel M. Murphy, Robert W. Portmann, Owen B. Toon, Karl D. Froyd, Andrew W. Rollins, Ru‐Shan Gao, Karen H. Rosenlof   +7 more
doaj   +1 more source

Improving satellite-retrieved aerosol microphysical properties using GOCART data [PDF]

Atmospheric Measurement Techniques, 2015
The Multi-angle Imaging SpectroRadiometer (MISR) aboard the NASA Earth Observing System's Terra satellite can provide more reliable aerosol optical depth (AOD) and better constraints on particle size (Ångström exponent, or ANG), sphericity, and single ...
S. Li, R. Kahn, M. Chin, M. J. Garay, Y. Liu   +4 more
doaj   +1 more source

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

Black Carbon‐Attributable Mortality and Its Disparity Across the Population Subgroups in India

GeoHealth, Volume 10, Issue 5, May 2026.
Abstract Black carbon (BC) is an essential short‐lived climate pollutant and a critical component of health‐damaging fine particulate matter (PM2.5), posing significant risks to public health and the climate system. Despite its dual impact, comprehensive assessments of population‐level BC exposure, its associated mortality burden, and its disparities ...
Pratima Gupta, Debajit Sarkar, Amarendra Singh, Fahad Imam, Alok Kumar, Arushi Sharma, Chandra Venkataraman, Yang Liu, Sagnik Dey   +8 more
wiley   +1 more source

Capability Demonstration of a JEDI‐Based System for TEMPO Assimilation: System Description and Evaluation

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 5, May 2026.
Abstract The launch of the Tropospheric Emissions: Monitoring of Pollution (TEMPO) mission in 2023 marked a new era in air quality monitoring by providing high‐frequency, geostationary observations of column NO2 across most of North America. In this study, we present the first implementation of a TEMPO NO2 data assimilation system using the Joint ...
Maryam Abdi‐Oskouei, Jérôme Barré, Shih‐Wei Wei, Sarah Lu, Ashley Griffin, Clementine Hardy Gas, Francois Hebert, Stephen Herbener, Eric Lingerfelt, Evan Parker, Christian Sampson, Steve Vahl, Fabio Diniz, Ben Johnson, Cheng Dang, Yannick Tremolet, Benjamin Ruston, Viral Shah, Emma Knowland, Ricardo Todling, Ronald Gelaro, Caroline Nowlan, Gonzalo Gonzalez Abad, Xiong Liu, Brian McDonald, Kristen Zuraski, Jeff Peischl, Caroline Womack, Laura Judd, Thomas Hanisco, Benjamin Menetrier, Cory Martin, Daniel Holdaway, Anna Shlyaeva, Dom Heinzeller, Steven Pawson, Thomas Auligne   +36 more
wiley   +1 more source

Evaluation of Aerosol Optical Depth (AOD) estimated by Copernicus Atmosphere Monitoring Service (CAMS) in Brazil

Theoretical and Applied Climatology
Abstract The optical depth of aerosols plays a crucial role in scientific research and environmental policies, making it possible to understand the distribution and extent of aerosols in various regions of Brazil. The objective of this study is to evaluate the estimates of Aerosol Optical Depth (AOD) from the Copernicus Atmosphere Monitoring ...
Pedreira Jr., A., Curado, L., da Palácios, R., Santos, L., Querino, C., da Querino, J., Rodrigues, T., Marques, J.   +7 more
openaire   +2 more sources

A Bayesian Framework to Quantify Uncertainty in Aerosol Optical Model Selection Applied to TROPOMI Measurements

Remote Sensing
This article presents a method within a Bayesian framework for quantifying uncertainty in satellite aerosol remote sensing when retrieving aerosol optical depth (AOD).
Anu Kauppi, Antti Kukkurainen, Antti Lipponen, Marko Laine, Antti Arola, Hannakaisa Lindqvist, Johanna Tamminen   +6 more
doaj   +1 more source

Aerosol-cloud interaction inferred from MODIS satellite data and global aerosol models [PDF]

Atmospheric Chemistry and Physics, 2007
We have used the MODIS satellite data and two global aerosol models to investigate the relationships between aerosol optical depth (AOD) and cloud parameters that may be affected by the aerosol concentration. The relationships that are studied are mainly
G. Myhre, F. Stordal, M. Johnsrud, Y. J. Kaufman, D. Rosenfeld, T. Storelvmo, J. E. Kristjansson, T. K. Berntsen, A. Myhre, I. S. A. Isaksen   +9 more
doaj  

Self‐Lofting Drives Tropospheric and Stratospheric Transport of Australian Wildfire Smoke to Antarctic Ice

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract The 2019–2020 Australian New Year (ANY) wildfires injected vast amounts of aerosols and trace gases into the atmosphere. Previous studies focused on pyrocumulonimbus (pyroCb) activities that inject smoke directly into the upper troposphere. Our study shows that extensive aerosol plumes emitted into the lower troposphere during ANY wildfires ...
Jiawei Huang, Yifeng Peng, Yao Guo, Kai Qie, Xuemei Wang, Nan Ma, Min Shao, Pengfei Yu   +7 more
wiley   +1 more source

A Multi-Wavelength Deep Neural Network Framework for Synergistic Retrieval of AOD, FMF, and AAOD from TROPOMI

Remote Sensing
Aerosol optical depth (AOD), fine-mode fraction (FMF), and absorption aerosol optical depth (AAOD) are essential for quantifying aerosol extinction and related climate and air-quality effects.
Benben Xu, Meng Fan, Huaxuan Wang, Heng Jia, Yichen Li, Yangyu Fan, Jinhua Tao, Liangfu Chen   +7 more
doaj   +1 more source