Jones (CRU) Air and Marine Temperature Anomalies: HADCRUT3
One-Line Description:
- Jones (CRU) Combined Air/Marine Temperature Anomalies (HADCRUT3 and HADCRUT3V)
Temporal Coverage:
- Monthly anomalies from 1850/01 to present
Spatial Coverage:
- 5.0 degree latitude x 5.0 degree longitude global grid (72x36).
- 87.5S - 87.5N, -177.5E - 177.5E.
Levels:
- Surface
Update Schedule:
- Monthly
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 | Surface | air.mon.anom.nc |  |
| Air temperature anomalies:variance corrected | monthly anomaly | Surface | air.mon.anom.nc | |
| Air temperature Bias 97.5 | monthly anomaly | Surface | air.mon.anom.biased97.5.nc | |
| Air temperature Bias 2.5 | monthly anomaly | Surface | air.mon.biased2.5.nc | |
| Air temperature Station Error | monthly value | Surface | air.mon.anom.stationerror.nc | |
| Air temperature M+S Error | monthly total | Surface | air.mon.anom.mserror.nc | |
| Air temperature (from Hadcrut2!) | monthly long term mean | Surface | air.mon.ltm.nc | |
Usage Restrictions:
- Please register at the Hadley Centre so that they can prove their datasewts are widely used and so they can get funding.
Detailed Description:
-
See the Hadley Centre for more details.
A climatology (1961-90) is provided which is based on the variance adjusted
version HadCRUT2v as this has been corrected for changes in
the numbers of stations/SST observations in the individual grid-box series. This is the current IPCC global
and hemispheric time series which is based on the methods in Folland et al. (2001a).The
air temperature page is from monthly station temperature time series while the SST is from the
HADSSTV2 SST analysis. A version that is variance corrected (HADCRUT3V) is available.
The technique for the variance adjusted dataset can be found at Jones et. al (2001).
Note the companion dataset CRUTEM3 Air Temperature Anomalies. Also note that if you would like a climatology, there is a 1961-1990 LTM file based on the HADCRUT3V data. - Related Datasets
Caveats:
- None
Related File Naming & Structure Information:
File Names:
- var.time.stat.nc (In directory: /Datasets/cru/hadcru3/std/)
- var.time.stat.nc (In directory: /Datasets/cru/hadcru3/var/)
Dataset Format and Size:
- PSD standard NetCDF 18.6Mbytes file for each monthly file.
- PSD standard NetCDF .12Mbytes file the monthly ltm file.
Missing Data:
- -9.96921e+36f.
Original Source:
Citation:
- Please note: If you acquire HADCRU3 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 HADCRU3 data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at http://www.cdc.noaa.gov/ 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 HADCRU3 data set freely available online in the future. Thank you!
References:
- P. Brohan, J.J. Kennedy, I. Harris, S.F.B. Tett and P.D. Jones, Uncertainty estimates in regional and global observed temperature changes: a new dataset from 1850. J. Geophys. Research, 111, D12106, doi:10.1029/2005JD006548.
- Jones, P.D., T.J. Osborn, K.R. Briffa, C.K. Folland, E.B. Horton, L.V. Alexander, D.E. Parker, and N.A. Rayner, 2001. Adjusting for sampling density in grid box land and ocean surface temperature time series. Journal of Geophysical Research 106:3371-3380.
Contact:
- Physical Sciences Division: Data Management
NOAA/ESRL/PSD
325 Broadway
Boulder, CO 80305-3328
esrl.psd.data@noaa.gov