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You can find more info about the upcoming URL changes here.
Jones (CRU) Air and Marine Temperature Amomalies: HADCRUT2/HADCRUTEMV2
One-Line Description:
- Jones (CRU) Combined Air/Marine Temperature Anomalies (HADCRUT2 and HADCRUT2V).
Temporal Coverage:
- Monthly anomalies from 1856/01 for standard.
- Monthly anomalies from 1856/01 for variance adjusted.
Spatial Coverage:
- 5.0 degree latitude x 5.0 degree longitude global grid (72x36).
- 87.5S - 87.5N , 2.5E - 357.5E.
Levels:
- Surface
Update Schedule:
- Monthly
Download/Plot Data:
| Variable | Statistic | Level | Download File | Create Plot/Subset |
|---|---|---|---|---|
| ' ' | Monthly Anomaly | Surface | air.mon.anom.nc |  |
| ' ' | Monthly Anomaly (variance adjusted) | Surface | air.mon.anom.nc | |
| ' ' | Monthly Long Term Mean (variance adjusted) | Surface | air.mon.ltm.nc | |
Usage Restrictions:
- None
Detailed Description:
- See the Climate Research Unit (CRU) webpage 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 (HADCRUT2V) is available. The technique for the variance adjusted dataset can be found at Jone et. al (2001).
- Related Datasets
Caveats:
- None
Related File Naming & Structure Information:
File Names:
- var.time.stat.nc (In directory: /Datasets/udel.airt.precip/)
Dataset Format and Size:
- PSD standard NetCDF 19 Mbyte file for each monthly file (packed).
- PSD standard NetCDF 16 Mbyte file for each long term mean file (packed).
- PSD standard NetCDF 12 Mbyte file for each long term mean file (packed).
Missing Data:
- Missing data is flagged with a value of 32767s.
Citation:
- Please note: If you acquire HADCRUTV2 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 HADCRUTV2 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 HADCRUTV2 data set freely available online in the future. Thank you!
References:
- 1994, Journal of Climate: Vol. 7, No. 11, pp. 1794-1802. Hemispheric Surface Air Temperature Variations: A Reanalysis and an Update to 1993 P.D. Jones
- Folland, C.K., Karl, T.R., Christy, J.R., Clarke, R.A., Gruza, G.V., Jouzel, J., Mann, M.E., Oerlemans, J., Salinger, M.J. and Wang, S.-W., 2001b: Observed Climate Variability and Change. pp. 99-181 In: Climate Change 2001: The Scientific Basis. Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change (Houghton, J.T., Ding, Y., Griggs, D.J., Noguer, M., van der Linden, P.J., Dai, X., Maskell, K. and Johnson, C.A. Eds.). Cambridge University Press, Cambridge, UK, 881pp.
- Jones, P.D., Osborn, T.J. and Briffa, K.R., 1997: Estimating sampling errors in large-scale temperature averages. J. Climate 10, 2548-2568.
- Legates, D. R. and C. J. Willmott (1990a) Mean Seasonal and Spatial Variability Global Surface Air Temperature. Theoretical and Applied Climatology , 41, 11-21.
- Shepard, D. (1968) A two-dimensional Interpolation function for irregularly-spaced Data. Proceedings, 1968 ACM National Conference, 517-523.
- Willmott, C. J., C. M. Rowe and W. D. Philpot (1985) Small-Scale Climate Maps: A Sensitivity Analysis of Some Common Assumptions Associated with Grid-point Interpolation and Contouring. American Cartographer, 12, 5-16.
- Willmott, C. J. and K. Matsuura (1995) Smart Interpolation of Annually Averaged Air Temperature in the United States. Journal of Applied Meteorology, 34, 2577-2586.
Original Source:
- Climatic Research Unit University of East Anglia Norwich NR4 7TJ, UK http://www.cru.uea.ac.uk/cru/data/temperature/ and ftp://ftp.cru.uea.ac.uk/data/
Contact:
- Physical Sciences Division: Data Management
NOAA/ESRL/PSD
325 Broadway
Boulder, CO 80305-3328
esrl.psd.data@noaa.gov