A constellation of geostationary satellite ultraviolet-visible (UV-VIS) spectrometers with air quality related trace gas and aerosol observational capabilities is in orbit forming a Geo-Ring in the Northern Hemisphere. These include Geostationary Monitoring Spectrometer (GEMS) launched in February 2020 by Korean Aerospace Research Institute over Asia, Tropospheric Emissions: Monitoring of Pollution (TEMPO) launched in April 2023 by NASA over North America, and Sentinel-4 ultraviolet visible near infrared (UVN) instrument launched in July 2025 by European Space Agency over Europe. A very successful demonstration of GEMS and TEMPO trace gas and aerosol products in air quality monitoring and forecasting is paving the way for the newly launched Sentinel-4 UVN instrument. We are soliciting papers on global hourly observations of different pollutants from Geo-Ring, consistency of products with state-of-the-art calibration and validation including Low Earth Orbiting satellite sensors as a transfer standard for Level 1B radiances, usage of trace gas and aerosol data in models, inverse modeling to derive emissions, long-range transport of pollutants, and related topics involving international collaboration to minimize data gaps in the Global South.