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HadSST.4.1.1.0 Data: download

The data and products on this page are provided under the Open Government Licence v3.

User information:

For details on file formats, contents and how to use this data please see the Product User Guide, which includes a quick start guide.
Checksums can be used to ensure that downloaded files match the version we hold. On Linux systems the command is "md5sum".
Earlier versions of the data set can be downloaded from: HadSST.4.0.1.0

The HadSST.4.1.0.0 version of the dataset was provided for only a short period of time, and was in most aspects indistinguishable from HadSST.4.1.1.0 (see Product User Guide for details). We have therefore replaced this directly with HadSST.4.1.1.0. Please contact us if you require the HadSST.4.1.0.0 version of the dataset, which runs from January 1850 to February 2025.

Time series files

Time series files are available in csv format.

Annual time series files

HadSST.4.1.1.0_annual_GLOBE.csv (14K) - md5sum checksum = 35586836dda5d4dcdc83efdf7577dc58
HadSST.4.1.1.0_annual_NHEM.csv (14K) - md5sum checksum = fec40b5d31ceb431d8cd2da37b73fe99
HadSST.4.1.1.0_annual_SHEM.csv (14K) - md5sum checksum = 4f530e36573b0d1f6070021d2fc19555
HadSST.4.1.1.0_annual_TROP.csv (14K) - md5sum checksum = d3d1740595d7a44c991259f5e87b48de

Monthly time series files

HadSST.4.1.1.0_monthly_GLOBE.csv (167K) - md5sum checksum = dfac3a75b056e97c9eade5d6858dd75b
HadSST.4.1.1.0_monthly_NHEM.csv (167K) - md5sum checksum = 0842b5793071ee60219fd4ccce2d3668
HadSST.4.1.1.0_monthly_SHEM.csv (168K) - md5sum checksum = 6818674d0afe167ffcd147ab903ac139
HadSST.4.1.1.0_monthly_TROP.csv (167K) - md5sum checksum = 74f090c6cf8fe8f532f7b6106849e7cb

Gridded data files

The gridded data are available as a set of NetCDF (external link) files. The files are CF compliant.

Core dataset

The core 200-member SST anomaly ensemble dataset and median.

HadSST.4.1.1.0_median.nc (8.6M) - md5sum checksum = 8b13cbf97a3da2551df7a16eb31e971a
HadSST.4.1.1.0_ensemble.zip (1.7G) - md5sum checksum = 9f69539ef793d5bf6f6a2aa91509dc32

Uncertainty components

Including correlated and uncorrelated components for use in uncertainty propagation. Please see the Product User Guide for further details.

HadSST.4.1.1.0_total_uncertainty.nc (8.0M) - md5sum checksum = 4c1777450efd672880b2ee24486d8ccc
HadSST.4.1.1.0_measurement_and_sampling_uncertainty.nc (8.0M) - md5sum checksum = 1b5b2000c075d35a35eb72e32aa0ecbd
HadSST.4.1.1.0_error_covariance.zip (1.4G) - md5sum checksum = 6a5154c315371c7f7d6c14d99362205f

Observation counts

HadSST.4.1.1.0_number_of_observations.nc (4.3M) - md5sum checksum = 07aafe88e04626f850919894ef7e2a62
HadSST.4.1.1.0_number_of_superobservations.nc (3.7M) - md5sum checksum = a425cab0f8504265b517f20ea98bc9ca

Additional products

HadSST.4.1.1.0_unadjusted.nc (8.6M) - md5sum checksum = af6c48fe2224ea945b52437b12238236
HadSST.4.1.1.0_actuals_median.nc (7.8M) - md5sum checksum = a653dbdf9ac3d17efc6d1d94a56f489c
HadSST.4.1.1.0_actuals_ensemble.zip (1.6G) - md5sum checksum = 60c208d6e81b2540371754ca727dab18

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