Near Real-Time Global Composition Forecasts at 25km Horizontal Resolution

[摘要] We present a new high-resolution global composition forecast system produced by NASA's Global Modeling and Assimilation Office. The NASA Goddard Earth Observing System (GEOS) model has been expanded to provide global near-real-time 5-day forecasts of atmospheric composition at unprecedented horizontal resolution of 0.25 degrees (~25 km). This composition forecast system (GEOS-CF) system combines the operational GEOS weather forecasting model with the state-of-the-science GEOS-Chem chemistry module (version 12) to provide detailed analysis of a wide range of air pollutants such as ozone, carbon monoxide, nitrogen oxides, and fine particulate matter (PM2.5). Satellite observations are assimilated into the system for improved representation of weather and smoke.

[发布日期] 2019-05-08

[学科分类] 大气科学

[关键词] FORECASTING;AIR POLLUTION;ATMOSPHERIC COMPOSITION;REAL TIME OPERATION;EARTH OBSERVING SYSTEM (EOS);SATELLITE OBSERVATION;HIGH RESOLUTION