The WRF Model coupled with Chemistry (WRF-Chem) Forecast Output over CONUS

The Weather Research and Forecasting (WRF) model coupled with Chemistry version 3.9.1 is used to generate a 48-hour air quality forecast daily at 12 km grid spacing over the CONUS. The first 24 forecast files are available here. This WRF-Chem model simulates the emission, transport, mixing, and chemical transformation of trace gases and aerosols simultaneously with the meteorology. These forecasts are used to support air quality decision-making, field campaign planning, early identification of model errors and biases, and support the atmospheric science community in their research. This system aims to complement the operational air quality forecasts produced by the National Oceanic and Atmospheric Administration (NOAA), not to replace them. A publicly available information dissemination system has been established that displays various air quality products, including a near-real-time evaluation of the model forecasts at the WRF Chemistry Forecast Maps [https://www.acom.ucar.edu/firex-aq/forecast.shtml].

采用与化学版本3.9.1耦合的天气研究预报模型（WRF）每日生成48小时空气质量预报，网格间距为12公里，覆盖美国大陆地区。本数据集提供的前24小时预报文件可在此处获取。WRF-Chem模型能够同时模拟与气象条件相结合的痕量气体和气溶胶的排放、传输、混合及化学转化过程。这些预报结果被用于支持空气质量决策制定、现场战役规划、模型误差和偏差的早期识别，并助力大气科学界的研究工作。本系统旨在补充美国国家海洋和大气管理局（NOAA）生成的运行空气质量预报，而非替代之。一个公开的信息传播系统已经建立，该系统展示了各种空气质量产品，包括WRF化学预报地图上模型预报的近实时评估。[https://www.acom.ucar.edu/firex-aq/forecast.shtml]