Rapid Refresh with Chemistry

Real time forecasts predicting weather and air quality

The Rapid Refresh model is used to predict air pollution. The forecast model based on the Weather Research and Forecasting (WRF) coupled with chemistry via the RACM chemical mechanism incuding MOSAIC/VBS for better prediction of secondary orangic aerosols (SOA). In addition, the forecasts include:
For a more detailed description of the meteorology model, one may go to the Rapid Refresh model web page or to the WRF/Chem web page for a description of the chemistry model.

In addition to the forecasts shown below, the High-Resolution Rapid Refresh with chemistry (HRRR-Chem) is being run in real time on a high resolution domain over the western region of the US. Output from the forecasts are available under the HRRR-Chem web page.




The RR-Chem forecasts are run twice a day - 00 and 12 UTC. A few plots from the model forecasts are provided below.

13 km RR-CHEM air quality and weather forecast using RACM-SOA-VBS with MADE/SORGAM

This model is run on NOAA/ESRL's 64-bit supercomputer. Meteorological initial and boundary conditions come from the GFS model forecasts. For air quality forecasts, the chemistry fields produced by a previous 12 h forecast are used to initiallize each new forecast. Anthropogenic emissions data for CONUS are from an improved EPA NEI-11 (National Emissions Inventory, 2011) data set with RETRO/EDGAR emissions used elsewhere.


Full domain at times:

CONUS at times:

Colorado region at times:











High Resolution Rapid Refresh with Smoke Tracers

Real time forecasts predicting weather and air quality

An experimental version of the High Resolution Rapid Refresh model is being used to predict wildfire smoke transport. The forecast model based on the the Weather Research and Forecasting (WRF) numerical model coupled with chemistry (WRF-Chem).
For a more detailed description of the meteorology model, one may go to the Rapid Refresh model web page or to the WRF/Chem web page for a description of the chemistry model.


The HRRR-Chem smoke tracer forecasts are run four times a day - 00, 06, 12 and 18 UTC. A few plots from the 00 and 12 UTC model forecasts are provided below. When available, the smoke tracer field produced by a previous forecast are used to initiallize each new forecast.

3 km HRRR-CHEM wildfire forecast

This model is run on NOAA/ESRL's 64-bit supercomputer. Meteorological initial and boundary conditions come from the developmental HRRR model forecasts.

THESE FORECASTS ARE EXPERIMENTAL AND PLOTS MIGHT CHANGE, OR BE REMOVED WITHOUT NOTICE.


CONUS smoke at times:

This page developed by Steven Peckham. The real-time air quality prediction experiment is set up and run by Georg Grell and Steven Peckham.
Last modified: Monday, 9 Jul 2013




Since 24 June 2014
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