Forecasts

Forecasts and Near Real Time (NRT) Products

Chemical forecasts are now being provided with the Whole Atmosphere Community Climate Model (WACCM) configuration of CESM2.  10-day forecasts are being run, driven by NASA/GMAO GEOS-5 meteorological forecasts.  Fire emissions are updated daily with near-real-time FINNv1 emissions and used for the following 10-day forecast. Anthropogenic emissions are from the CMIP6 inventory.

The chemical mechanism in CESM2-WACCM includes comprehensive tropospheric, stratospheric and mesospheric chemistry.  The tropospheric chemistry mechanism has been significantly updated from MOZART-4 and is called MOZART-T1.  A preliminary version of this mechanism is described in Knote et al. (2014) and a complete description of the chemistry in CESM2 is being prepared.  The most important change for users of the model output for regional model boundary conditions is the new treatment of aromatics: the previous lumped aromatic (confusingly called 'TOLUENE') has been replaced with the specific species BENZENE, TOLUENE and XYLENES.  The lumped monoterpene is now called MTERP, and a sesquiterpene, BCARY, has been added. The full list of species in this configuration are in this file. The aerosol scheme in WACCM is the MAM4 modal aerosol scheme, which is described in Liu et al. (GMD, 2015).

We have provided a variety of tools for visualizing our data products:

Pre-made Forecast Maps

WACCM Pre-made Plots Thumbnail

Custom Forecast Plots

WACCM Custom Plots Thumbnail

WACCM Chemical Map

Interactive Chemical Map Thumbnail

MOPITT in Worldview (NRT)

WACCM Data Subsetter Thumbnail

FINN Fire Emissions (NRT)

Fire Emissions (FINN) Thumbnail

We have also made our data products available for download in a variety of ways:

WACCM Data Subsetter and Download

WACCM Data Subsetter Thumbnail

Cam-chem Data Subsetter and Download

Fire Emissions (FINN) Thumbnail

UCAR/NCAR Share

                  

                  

ACOM | Atmospheric Chemistry Observations & Modeling