WG Leader (Dr Gil Compo, U. of Colorado CIRES Climate Diagnostics Center and NOAA Earth System Research Laboratory, United States - compo@colorado.edu)Terms of reference: Testing against independent data sources ; Best practice ; Inter-comparisons with other reanalyses and reconstructions; Feedback on the 20th Century Reanalysis Project (eventually moving to SIRCA)Members: Xiaolan Wang (Xiaolan.Wang@ec.gc.ca); Russ Vose (Russell.Vose@noaa.gov); Paul Staten (Paul.Staten@utah.edu); Thomas Reichler (thomas.reichler @utah.edu); Edward Hanna (E.Hanna@sheffield.ac.uk); Julie Jones (julie.jones@sheffield.ac.uk); Ben Giese (b-giese@tamu.edu); John Fasullo (fasullo@ucar.edu); Helen Fairweather (Helen.Fairweather@climatechange.qld.gov.au); Paul Della-Marta (Paul.Della-Marta@partnerre.com); Jim Carton (carton@atmos.umd.edu); Antonio S. Cofiño (antonio.cofino@unican.es); Stefan Brönnimann (stefan.bronnimann@env.ethz.ch); Phil Arkin (parkin@essic.umd.edu); Rob Allan (rob.allan@metoffice.gov.uk) The 20th Century Reanalysis Project The 20th Century Reanalysis Project is an effort to produce a reanalysis dataset spanning the entire twentieth century (1871-present), assimilating only surface observations of synoptic pressure, monthly sea surface temperature and sea-ice distributions. The SST and sea-ice data are courtesy of the UK Met Office Hadley Centre from their HadISST dataset. The pressure observations dataset, the International Surface Pressure Databank (ISPD), has been assembled through international cooperation under the auspices of the international ACRE initiative (http://www.met-acre.org), and working groups of GCOS and WCRP. Global four-times-daily atmospheric and surface analysis fields spanning 1891 to 2008 from the 20th Century Reanalysis Project Version 2 dataset are now available at (http://www.esrl.noaa.gov/psd/data/gridded/data.20thC_ReanV2.html) in netCDF format, courtesy of the NOAA Earth System Research Laboratory, Physical Sciences Division (PSD), and University of Colorado CIRES/Climate Diagnostics Center (CDC). Fields will soon be available via our partners at the National Center for Atmospheric Research (http://dss.ucar.edu/datasets/ds131.1) in GRIB format, and via our partners at NOAA’s National Climatic Data Center (NCDC) through the NOAA Operational Model Archive and Distribution System (NOMADS) (http://nomads.ncdc.noaa.gov) and the NCDC Data Archive in the near future. Additional fields will also become available at PSD/CDC. Beta composite plotting tools for four-times-times daily means are now available courtesy of Cathy Smith of NOAA/ESRL/PSD and CU/CIRES/CDC at (http://www.esrl.noaa.gov/psd/data/composites/day_20thc/). Pre-generated synoptic maps showing the ensemble mean analysis and analysis uncertainty of Sea Level Pressure and 500 hPa height over the Northern and Southern Hemispheres and for Sea Level Pressure and 850 hPa zonal wind in the tropics are available at (http://www.esrl.noaa.gov/psd/data/20thC_Rean/hem_images.html). The Version 2 dataset, when complete, will span 1871-present. The 1871-1890 period is currently in production and is expected later in spring 2010. The Project home page can be found at (http://www.esrl.noaa.gov/psd/data/20thC_Rean/) .
Future planned extensions of these ACRE-facilitated reanalyses aim to ultimately cover the last 200+ years: Surface Input Reanalysis for Climate Applications (SIRCA): 1850-2011 [Autumn 2012] Chemical and Surface Input Reanalysis for Climate Applications (CSIRCA): 1800-2016 [Autumn 2017] Surface Data Sources http://sites.google.com/a/met-acre.org/acre/wg1-data/data-sources Reanalysis Products http://www.esrl.noaa.gov/psd/data/20thC_Rean/ http://dss.ucar.edu/datasets/ds131.0/ http://dss.ucar.edu/datasets/ds131.1/ Acknowledgments The Twentieth Century Reanalysis Project used resources of the National Energy Research Scientific Computing Center and of the National Center for Computational Sciences at Oak Ridge National Laboratory, which are supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 and Contract No. DE-AC05-00OR22725, respectively. Papers using the Twentieth Century Reanalysis Project dataset are requested to include the following text in their acknowledgments: "Support for the Twentieth Century Reanalysis Project dataset is provided by the U.S. Department of Energy, Office of Science Innovative and Novel Computational Impact on Theory and Experiment (DOE INCITE) program, and Office of Biological and Environmental Research (BER), and by the National Oceanic and Atmospheric Administration Climate Program Office." |