Seminar on Air Quality Modeling and Forecasting & Role Clouds play in Affecting Atmospheric Composition

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Date: April 1, 2025 from 3pm – 5pm

Presenter(s):  Rajesh Kumar,  Deputy Director, Research Application Lab, NSF NCAR and  Mary Barth , Senior Scientist, NSF NCAR

Zoom: https://ccny.zoom.us/j/84211573613?pwd=oKXF3GDMatUta9weRD3zTkKXLRjWqH.1

Abstracts:

Air Quality Modeling and Forecasting

Air quality science emerged out of the societal need to mitigate health effects of deadly smog events that occurred in North America and
Europe around the middle of 20th century. In the past 70 years, atmospheric chemistry has advanced so much that we are now capable of
predicting air quality in both the short-term (1-3 days) and long-term (climate time scales) and assessing the implications of air pollution for
public health and food security. Dr. Kumar will provide a very high-level historical overview of air quality research followed by fundamentals of
air quality modeling, development of an air quality forecasting system for New Delhi, and conclude with the future of atmospheric
chemistry modeling at NSF NCAR

Role Clouds play in Affecting Atmospheric Composition

The Earth’s atmosphere is composed of gases and aerosol particles that affect air quality, atmospheric radiation, and cloud properties, impacting climate and weather. Clouds, which cover ~60% of the globe at any given time, affect the concentrations of trace gases and aerosols within the atmosphere in many ways, including vertical transport to higher altitudes, removal via precipitation, and cloud chemistry. This talk will review our current understanding of how clouds affect trace gas and aerosol concentrations using data collected in and near thunderstorms during two aircraft field campaigns. The presentation illustrates the value of combining atmospheric chemistry models with observations to advance our understanding of the atmosphere