Archiving New Climate Forecast System Data

Map of CFSv2 Analysis of the Global Total Ozone in the Atmosphere on Aug 31, 2014

Utilizing the CFSv2 analysis, this map shows the total amount of ozone in the atmosphere across the globe on August 31, 2014 at 0000 UTC. At that time, higher concentrations of atmospheric ozone were present in the Southern Hemisphere’s midlatitudes than in the Northern Hemisphere.

NCDC is announcing the beginning of an addition of over 500 terabytes of Climate Forecast System version 2 (CFSv2) model data to the Center’s archive. Several new CFSv2 datasets will be available through NOAA’s National Model Archive and Distribution System (NOMADS) over the next several months, including operational CFSv2 forecasts, operational CFSv2 analysis, retrospective CFSv2 reforecasts from 1982 through 2011, and CFSv2 calibration climatologies for the CFS Reanalysis and Reforecast datasets.

The calibration climatologies for the CFSv2 Reanalysis and the CFSv2 Reforecast datasets will be available as completely new sets of data, making the NCDC repository a more convenient one-stop shop for CFSv2 data users. Additionally, 45-day, 3-month, and 9-month CFSv2 Reforecast data that include all pressure and surface flux variables will now be available at all levels. New Operational CFSv2 analysis data from April 2011 to the present will continue the current archive of CFSv2 Reanalysis data already being provided by the Center. NCDC will begin archiving 9-month Operational CFSv2 Forecast data from April 2011 to the present.

The Climate Forecast System or CFS is a model representing the global interaction between the Earth's oceans, land, and atmosphere. Produced by several dozen scientists under guidance from the National Centers for Environmental Prediction (NCEP), this model offers hourly data for many variables with a resolution down to approximately 56 km. CFS uses the latest scientific approaches for taking in, or assimilating, observations from many data sources including surface observations, upper-air balloon observations, aircraft observations, and satellite observations.

NOAA’s Climate Prediction Center (CPC) as well as other government, university and private sector researchers use the CFSv2 data that NCDC will house to produce seasonal outlooks with a stable model in which the underlying code has not and will not change over time. The CFSv2 data also provide an ongoing reanalysis that can be used for a variety of purposes including providing a consistent depiction of the atmosphere, regardless of changing observational systems, which scientists can use in short-term weather as well asseasonal and other climatological studies.

Access the new CFSv2 data and all of NCDC’s historical model holdings on the Model Datasets page. Additional information and real-time data can be accessed from the CPC CFSv2 page.

For additional information on the CFSv2 datasets, see Saha, Suranjana, and Coauthors, 2014:  The NCEP Climate Forecast System Version 2. Journal of Climate, 27, 2185–2208, http://dx.doi.org/10.1175/JCLI-D-12-00823.1.