Air Quality Forecasts Using the NASA GEOS Model

Knowland, K Emma ; Keller, Christoph A ; Nielsen, Eric JOrbe, Clara ; Ott, Lesley ; Pawson, Steven ; Saunders, Emily ; Duncan, Bryan ; Follette-Cook, Melanie ; Liu, Junhua(Universities Space Research Association (USRA), Greenbelt, MD, United States)

关键词: AIR QUALITY;    GEODETIC SATELLITES;    EARTH OBSERVING SYSTEM (EOS);    FORECASTING;    ATMOSPHERIC COMPOSITION;    HIGH RESOLUTION;    REAL TIME OPERATION;   

RP-ID  :  GSFC-E-DAA-TN57727

学科分类：污染

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

We provide an introduction to a new high-resolution (0.25 degree) global composition forecast produced by NASA's Global Modeling and Assimilation office. The NASA Goddard Earth Observing System version 5 (GEOS-5) model has been expanded to provide global near-real-time forecasts of atmospheric composition at a horizontal resolution of 0.25 degrees (~25 km). Previously, this combination of detailed chemistry and resolution was only provided by regional models. This system combines the operational GEOS-5 weather forecasting model with the state-of-the-science GEOS-Chem chemistry module (version 11) to provide detailed chemical analysis of a wide range of air pollutants such as ozone, carbon monoxide, nitrogen oxides, and fine particulate matter (PM2.5).