Met Office Hadley Centre observations datasets
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HadSLP2 Data: Download


HadSLP2 is available as compressed plain text file in this data format (with sample fortran code).


HadSLP2.0 (un-interpolated HadSLP2 product) is also available to download. It is available with the same data format.


The number of observations at each grid point for each month and year are also available to download. They are available in this data format (with sample fortran code).


The uncertainty estimates (land and marine) at each grid point for each month and year are also available to download. They are available in this data format (with sample fortran code).

Please see Allan & Ansell (2006) for more details on how these uncertainty estimates were calculated.


HadSLP2r (our near-real time product) is also available to download. The previous months data is available on the 7th of the current month (e.g. November 2012 fields are available from 7th December 2012). It is available in the same ascii format as above. Please note that the HadSLP2r updates (from 2005) are not homogeneous with the 1850-2004 series. The means of the two series are homogeneous, but the variance in the HadSLP2r product is larger than that of the HadSLP2.


HadSLP2r with reduced variance: this is identical to HadSLPr (above) except its variance has been reduced to be consistent with that of HadSLP2.

Details of how the variance was reduced are available: HadSLP2r_lowvar_description.doc (~1Mb; Microsoft Word document format).

The data - currently through December 2012 - are available for download in NetCDF and in pp format: