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Dataset

 

NOAA-CIRES Twentieth Century Reanalysis Project: Ensemble means and spreads for 1891 to present in GRIB format, Version II

Update Frequency: Not Planned
Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2012-10-16
Download Stats: last 12 months

Abstract

The 20th Century Reanalysis dataset provides 6 hourly analyses on a Global 2.0 degree latitude x 2.0 degree longitude global grid from 1871 to present produced from a series of 56-member ensemble runs. For each output time step ensemble means and associated spreads have been calculated and form a continuous dataset over the entire timespan of the dataset. The data contain fields at the surface and on pressure levels from 1000 hPa to 10 hPa.

The dataset authors request that the following acknowledgment be included in all papers using the dataset:

'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 - http://www.doeleadershipcomputing.org/incite-program/ ) program, and Office of Biological and Environmental Research (BER - http://science.energy.gov/ber/ ), and by the National Oceanic and Atmospheric Administration Climate Program Office (http://www.climate.noaa.gov/).'

Citable as:  Twentieth Century Reanalysis Project Participants; Compo, G.P.; Whitaker, J.S.; Sardeshmukh, P.D.; Matsui, N.; Allan, R.J.; Yin, X.; Gleason Jr, B.E.; Vose, R.S.; Rutledge, G.K.; Bessemoulin, P.; Brönnimann, S.; Brunet, M.; Crouthamel, R.I.; Grant, A.N.; Groisman, P.Y.; Jones, P.D.; Kruk, M.C.; Kruger, A.C.; Marshall, G.J.; Maugeri, M.; Mok, H.Y.; Nordli, Ø.; Ross, T.F.; Trigo, R.M.; Wang, X.L.; Woodruff, S.D.; Worley, S.J. (2012): NOAA-CIRES Twentieth Century Reanalysis Project: Ensemble means and spreads for 1891 to present in GRIB format, Version II. NCAS British Atmospheric Data Centre, date of citation. https://catalogue.ceda.ac.uk/uuid/44ea207df48e328fa56f754fc4fa97ca
Abbreviation: Not defined
Keywords: NOAA, CIRES, reanalysis, model, ensemble, means, spread

Details

Previous Info:
No news update for this record
Previously used record identifiers:
http://badc.nerc.ac.uk/view/badc.nerc.ac.uk__ATOM__ACTIVITY_687aca38-1788-11e2-8487-00163e251233
Access rules:
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: http://creativecommons.org/licenses/by/4.0/. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

The Twentieth Century Reanalysis data were produced by the National Centers for Atmospheric Prediction (NCEP) and archived at the U.S. Department of Energy's National Energy Research Scientific Computing Center (NERSC). The BADC obtained a complete copy of these data as archived at NERSC and have archived the data in the BADC archives splitting the data into the ensemble means with the associated spreads and the ensemble members for each of the runs making up the reanalysis dataset.

Data Quality:
All data issues are reported in Compo GP,Whitaker JS, Sardeshmukh PD, Matsui N, Allan RJ, Yin X, Gleason Jr BE, Vose RS, Rutledge G, Bessemoulin P, Br¨onnimann S, Brunet M, Crouthamel RI, Grant AN, Groisman PY, Jones PD, Kruk MC, Kruger AC, Marshall GJ, Maugeri M, Mok HY, Nordli Ø, Ross TF, Trigo RM, Wang XL, Woodruff SD,Worley SJ. 2011. The Twentieth Century Reanalysis Project. Q. J. R. Meteorol. Soc. 137: 1–28. DOI:10.1002/qj.776 . Note: additional surface pressure observations were made available by the Australian Bureau of Meteorology after 1951-1955 run had been initiated. Therefore the 1946-1950 run was extended to the end of 1951 to incorporate these additional data and the data for 1951 should be taken from the 1946-1951 run. The ensemble means and spreads for 1951 from the 1951-1955 run have also been provided in the archive, but have been demarcated to allow the user to distinguish these data from the extended 1946-1951 run used in the means and spreads data.
File Format:
Data are WMO GRIB1 formatted

Process overview

This dataset was generated by a combination of instruments deployed on platforms and computations as detailed below.

Computation Element: 1

Title April 2008 experimental version of the National Centers for Environmental Prediction (NCEP) Global Forecast System (GFS) deployed on Oak Ridge Leadership Computing Facility's (OLCF) 'Jaguar' system Cray XT5 supercomputer
Abstract This computation involved: April 2008 experimental version of the National Centers for Environmental Prediction (NCEP) Global Forecast System (GFS) deployed on Oak Ridge Leadership Computing Facility's (OLCF) 'Jaguar' system Cray XT5 supercomputer. The April 2008 experimental version of the National Centers for Environmental Prediction (NCEP) Global Forecast System (GFS) was used to generate the 20th Century Reanalysis (Version 2) Project reanalysis dataset. For the production of the reanalysis data from the 20th Century Reanalysis (Version 2) Project the April 2008 experimental version of the National Centers for Environmental Prediction (NCEP) Global Forecast System (GFS) on the US Department of Energy's massively parallel system at the National Energy Research Scientific Computing Center. For specific details of the complete suite of physical parameterisations used in the model runs refer to the citation given in the "Documentation and Links to Further Information and References section". The Twentieth Century Reanalysis Project used resources of the National Energy Research Scientific Computing Center managed by Lawrence Berkeley National Laboratory and of the Oak Ridge Leadership Computing Facility 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. 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. The Oak Ridge Leadership Computing Facility's (OLCF) 'Jaguar' Cray XT5 supercomputer system delivers 2.33 petaflop/s (peak) of parallel processing compute with access to 326 terabytes of high-speed memory. The Oak Ridge Leadership Computing Facility (OLCF), part of the US National Center for Computational Sciences, brought its 'Jaguar' system Cray XT5 supercomputer online in 2009, providing access to 2.33 Petaflops/s peak processing power to the research community. The 'Jaguar' system Cray XT5 supercomputer consists of an 84 cabinet quad-core Cray XT4 system and 200 upgraded Cray XT5 cabinets, using six-core processors. The XT4 has 8 gigabytes of memory per node while the XT5 has 16 gigabytes per node, giving the users a total of 362 terabytes of high-speed memory in the combined system. The two systems are connected to the Scalable I/O Network (SION), which links them together and to the Spider file system. The XT5 system has 256 service and I/O nodes providing up to 240 gigabytes per second of bandwidth to SION and 200 gigabits per second to external networks. The XT4 has 116 service and I/O nodes providing 44 gigabytes per second of bandwidth to SION and 100 gigabits per second to external networks.
Input Description None
Output Description None
Software Reference None

Computation Element: 2

Title Computation Process for: Ensemble means and spreads from National Oceanic and Atmospheric Administration (NOAA) - Cooperative Institute for Research in Environmental Sciences (CIRES) Twentieth Century Global Reanalysis Version II Dataset in GRIB format
Abstract This computation involved: deployed on National Energy Research Scientific Computing Center's Cray XE4 'Franklin' system. The National Energy Research Scientific Computing Center's Cray XE4 'Franklin' system had a peak performance of 352 TFlops, 32,288 processor cores, 78 TB of memory, and 436 TB of scratch disk space. The system was retired on 30/04/2012. <div property="cedacat:introduction"> <div class="introduction">Introduction</div> <p>The National Energy Research Scientific Computing Center's (NERSC) 'Frankin' Cray XT4 had a peak performance of 352 TFlops, 32,288 processor cores, 78 TB of memory, and 436 TB of scratch disk space. The system was retired on 30/04/2012.</p> </div>
Input Description None
Output Description None
Software Reference None

No variables found.