SARS-CoV2/COVID-19 propagated rapidly from local to global scales with multi-trillion $ impact and over 123M cases, 2.72M deaths (March 2021). The Pandemic has prevailed over the annual seasonal cycles of both hemispheres. Key questions remain regarding environmental determinants and co-factors associated with virus infectiousness and transmission rates, and disease severity. Infection rates and severity appear to vary substantially between countries and geopolitical domains. Robust vaccination efforts are under way to build herd immunity, but effective implementation will take time, especially considering virus variants. This session invites papers using environmental observations (RS/In-Situ/modeled) to distinguish between environmental factors associated (or not) with SARS-CoV-2/COVID-19 and concurrent forcings due to policy, social practice, demographics, and economic activity. Applications to local to global diagnostics and risk warning systems are encouraged, as are the presentation of tools to support enhanced monitoring and prediction (e.g., smart phone applications).