Some PSD datasets and products are not up-to-date due to a system problem. We are working on a fix.
 

Jones (CRU) Air and Marine Temperature Anomalies: HADCRUT4

Brief Description:

  • Jones (CRU) Combined Air/Marine Temperature Anomalies

Temporal Coverage:

  • Monthly anomalies from 1850/01 to near present.

Spatial Coverage:

  • 5.0 degree latitude x 5.0 degree longitude global grid (72x36).
  • 87.5S - 87.5N, 177.5W - 177.5E.

Levels:

  • Surface

Update Schedule:

  • Irregular

 

Download/Plot Data:

Archive parameters: File names are composed of variable abbreviations and statistic name:

(variable).(time).(statistics).nc

Variable Statistic Level Download File Create Plot/Subset
Air temperature anomalies monthly anomaly: Median of Ensembles Surface air.mon.anom.median.nc plot
Air temperature error monthly value: Stand Error Surface air.mon.anom.error.nc plot

Usage Restrictions:

  • Please register at the Hadley Centre so that they can prove their datasets are widely used and so they can get funding.

Detailed Description:

  • See the Hadley Centre for more details.

    This version is 4.1.1. The gridded data are a blend of the CRUTEM4 land-surface air temperature dataset and the HadSST3 sea-surface temperature (SST) dataset. The dataset is presented as an ensemble of 100 dataset realisations that sample the distribution of uncertainty in the global temperature record given current understanding of non-climatic factors affecting near-surface temperature observations. This ensemble approach allows characterisation of spatially and temporally correlated uncertainty structure in the gridded data, for example arising from uncertainties in methods used to account for changes in SST measurement practices, homogenisation of land station records and the potential impacts of urbanisation. The HadCRUT4 data are neither interpolated nor variance adjusted.

    Note the companion dataset CRUTEM4 Air Temperature Anomalies.

  • Related Datasets

Caveats:

  • None

Related File Naming & Structure Information:

File Names:

  • var.time.stat.nc   (In directory: /Datasets/cru/hadcrut4/)

OpenDap File Names:

  • http://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/cru/hadcrut4/var.time.stat.nc   

Dataset Format and Size:

  • PSD standard NetCDF ~20 Mbytes file for each monthly file.

Missing Data:

  • -9.96921e+36f.

Original Source:

Citation:

  • Morice, C.P., Kennedy, J.J., Rayner, N.A. and Jones, P.D., 2012: Quantifying uncertainties in global and regional temperature change using an ensemble of observational estimates: the HadCRUT4 dataset. Journal of Geophysical Research, 117, D08101, doi:10.1029/2011JD017187
  • Please note: If you acquire HADCRU4 data products from PSD, we ask that you acknowledge us in your use of the data. This may be done by including text such as HADCRU4 data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at http://www.esrl.noaa.gov/psd/ in any documents or publications using these data. We would also appreciate receiving a copy of the relevant publications. This will help PSD to justify keeping the HADCRU4 data set freely available online in the future. Thank you!

References:

  • Morice, C.P., Kennedy, J.J., Rayner, N.A. and Jones, P.D., 2012: Quantifying uncertainties in global and regional temperature change using an ensemble of observational estimates: the HadCRUT4 dataset. Journal of Geophysical Research, 117, D08101, doi:10.1029/2011JD017187
  • Brohan, P., J.J. Kennedy, I. Harris, S.F.B. Tett and P.D. Jones, 2006: Uncertainty estimates in regional and global observed temperature changes: a new dataset from 1850. J. Geophysical Research 111, D12106, doi:10.1029/2005JD006548
  • Jones, P.D., New, M., Parker, D.E., Martin, S. and Rigor, I.G., 1999: Surface air temperature and its variations over the last 150 years. Reviews of Geophysics 37, 173-199.
  • Jones, P.D., Lister, D.H., Osborn, T.J., Harpham, C., Salmon, M. and Morice, C.P., 2012: Hemispheric and large-scale land surface air temperature variations: an extensive revision and an update to 2010. Journal of Geophysical Research, doi:10.1029/2011JD017139.
  • Rayner, N.A., P. Brohan, D.E. Parker, C.K. Folland, J.J. Kennedy, M. Vanicek, T. Ansell and S.F.B. Tett, 2006: Improved analyses of changes and uncertainties in marine temperature measured in situ since the mid-nineteenth century: the HadSST2 dataset. J. Climate, 19, 446-469.
  • Rayner, N.A., D.E. Parker, E.B. Horton, C.K. Folland, L.V. Alexander, D.P. Rowell, E.C. Kent, and A. Kaplan, 2003: Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century. J. Geophys. Res., 108(D14), 4407, doi:10.1029/2002JD002670

Contact:

  • Physical Sciences Division: Data Management
    NOAA/ESRL/PSD
    325 Broadway
    Boulder, CO 80305-3328
    esrl.psd.data@noaa.gov