We present the first Event Horizon Telescope (EHT) observations of Sagittarius A* (Sgr A*), the G...
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The COVID-19 lockdown had a large impact on anthropogenic emissions of air pollutants and particu...
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On seasonal and interannual time scales, weather is highly influential in aerosol variability. In...
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In this paper, we introduce a spectral surface reflectivity climatology based on observations mad...
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I Introduction The ESA study ‘User requirements for monitoring the evolution of stratospheric oz...
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