NCAR Global Climate Four-Dimensional Data Assimilation (CFDDA) Hourly 40 km Reanalysis

NCAR Global Climate Four-Dimensional Data Assimilation (CFDDA) Hourly 40 km Reanalysis dataset is a dynamically-downscaled dataset with high temporal and spatial resolution that was created using NCAR's CFDDA system. At the core of the CFDDA system is the 5th generation Pennsylvania State University / NCAR mesoscale model (MM5).

The dataset contains three-dimensional hourly analyses in netCDF format for the global atmospheric state from 1985 to 2005 on a 40 km horizontal grid (0.4 degree grid increment) with 28 vertical levels. As a result, the dataset provides a collection of hourly, meso-beta scale reanalyses files for all the days of the months within the 21-year period, providing good representation of local forcing and the diurnal variation of processes in the planetary boundary layer. At the time of its creation, this was the only reanalysis dataset with full three-dimensional fields available at hourly intervals.

The dataset was generated by continuously assimilating standard surface and upper-air observations. Hourly and 6-hourly surface data and upper-air measurements (primarily 12- and 24-hourly rawinsondes) were assimilated. Initial land surface conditions were based on the NASA Global Land Data Assimilation System (GLDAS) on a 1 degree by 1 degree latitude-longitude grid, compiled using the Noah land surface model (LSM), where GLDAS values for substrate soil moisture and temperature, ground skin temperature, and snow water equivalent were used. Daily sea surface temperatures (SSTs) were specified by the National Centers for Environmental Prediction (NCEP) Version 2.0 global and daily SST dataset defined on a 0.25 degree by 0.25 degree grid.

To Access Resource:

Questions? Email Resource Support Contact:

  • Riley Conroy
    rpconroy@ucar.edu
    UCAR/NCAR - Research Data Archive

Temporal Range

  • Begin:  1985-01-01T00:00:00Z
    End:  2005-12-31T23:00:00Z

Keywords

Resource Type dataset
Temporal Range Begin 1985-01-01T00:00:00Z
Temporal Range End 2005-12-31T23:00:00Z
Temporal Resolution N/A
Bounding Box North Lat N/A
Bounding Box South Lat N/A
Bounding Box West Long N/A
Bounding Box East Long N/A
Spatial Representation N/A
Spatial Resolution N/A
Related Links

Related Resource #1 : MM5: Mesoscale Model - Core of the CFDDA System

Related Resource #2 : CDO: Collection of command line Operators to manipulate and analyse Climate and NWP model Data

Related Resource #3 : NCO: Shell-command style, stand-alone programs that take netCDF, HDF, and/or DAP files as input and output the results in text, binary, or netCDF formats

Related Resource #4 : Ncview: netCDF visual browser allowing users to visually inspect NetCDF data files

Related Resource #5 : Panoply: Cross-platform application that plots geo-gridded and other arrays from netCDF, HDF, GRIB, and other datasets

Related Resource #6 : IDV: Java-based software framework from Unidata for analyzing and visualizing geoscience data

Additional Information N/A
Resource Format NetCDF4 (Binary)
Standardized Resource Format NetCDF
Asset Size 26975231 MB
Legal Constraints

RELEASE POLICY: All uses of this dataset must be properly cited. See "How to Cite this Dataset" section below for examples of different citation styles. Additionally, notify [mailto:grace@ucar.edu] (303-497-1218) of technical reports and submitted publications that use the NCAR Global Climate Four-Dimensional Data Assimilation (CFDDA) Hourly 40 km Reanalysis dataset.


Access Constraints Registration on the RDA web site is a requirement for access to the data.
Software Implementation Language N/A

Resource Support Name Riley Conroy
Resource Support Email rpconroy@ucar.edu
Resource Support Organization UCAR/NCAR - Research Data Archive
Distributor NCAR Research Data Archive
Metadata Contact Name N/A
Metadata Contact Email rdahelp@ucar.edu
Metadata Contact Organization NCAR Research Data Archive

Author Rife, Daran L
Pinto, James O
Monaghan, Andrew J
Davis, Chris A
Hannan, John R
Publisher Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory
Publication Date 2014-07-08
Digital Object Identifier (DOI) https://doi.org/10.5065/D6M32STK
Alternate Identifier ds604.0
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2024-01-03T15:11:50-07:00
Metadata Record Identifier edu.ucar.rda::ds604.0
Metadata Language eng; USA
Suggested Citation Rife, Daran L, Pinto, James O, Monaghan, Andrew J, Davis, Chris A, Hannan, John R. (2014). NCAR Global Climate Four-Dimensional Data Assimilation (CFDDA) Hourly 40 km Reanalysis. Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory. https://doi.org/10.5065/D6M32STK. Accessed 19 May 2024.

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