Tag: dust
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Optical and Microphysical Characterization of Atmospheric Aerosols in Chad Based on Satellite Observations
Introduction Chad, a landlocked nation in central Africa, faces a complex mix of natural and anthropogenic aerosol sources. This study leverages satellite observations to characterize the optical and microphysical properties of atmospheric aerosols over Chad, providing insights into dust transport, aerosol composition, and potential climate impacts. By combining multi-sensor remote sensing data, we aim to…
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Optical and Microphysical Characterization of Atmospheric Aerosols in Chad Using Satellite Observations
Introduction Chad sits at the crossroads of Sub-Saharan Africa, with a landscape that spans deserts, savannas, and urban centers. Understanding the optical and microphysical properties of atmospheric aerosols in Chad is essential for assessing air quality, climate forcing, and regional health impacts. This article summarizes a satellite-based study that characterizes aerosol optical depth, size distribution,…
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JWST Uncovers Hidden Doomed Star Behind SN 2025pht, Shedding Light on Red Supergiant Explosions
A New Look at a Silent Progenitor The James Webb Space Telescope (JWST) has offered astronomers a rare glimpse of a hidden star on the eve of its dramatic finale. In a study published in The Astrophysical Journal Letters, researchers report that the progenitor of the supernova SN 2025pht—an enormous red supergiant—was virtually invisible in…