HadSST2 - 5x5 deg Monthly Global fields of SST anomalies (1850-2013)

The Met Office Hadley Centre's sea surface temperature data set, HadSST2, replaces the Met Office Historical Sea Surface Temperature dataset (MOHSST6) and is a monthly global field of SST (Sea Surface Temperature) on a 5 deg latitude by 5 deg longitude grid from 1850 to August 2013. The data are neither interpolated nor variance adjusted.

The SST data are taken from the International Comprehensive Ocean-Atmosphere Data Set, ICOADS, from 1850 to 1997 and from the NCEP-GTS from 1998 to the present. HadSST2 is produced by taking in-situ measurements of SST from ships and buoys, rejecting measurements which which fail quality checks, converting the measurements to anomalies by subtracting climatological values from the measurements, and calculating a robust average of the resulting anomalies on a 5° by 5° degree monthly grid. After gridding the anomalies, bias corrections are applied to remove spurious trends caused by changes in SST measuring practices before 1942. The uncertainties due to under-sampling have been calculated for the gridded monthly data as have the uncertainties on the bias corrections.

This dataset include:

- SST anomaly data (HadSST2_SST_1850on.txt.gz)

- 1961-1990 Climatology (HadSST2_climatology_5x5_1961_1990.txt)

- numbers of observations used to calculate the average (HadSST2_nobs_1850on.txt.gz)

- Estimates on the measurement and sampling errors on the SST data (HadSST2_m_and_s_errors_1850on.txt.gz)

- bias-adjusted data using bias adjustments which represent the 97.5 percent and 2.5 percent confidence levels of the estimated errors on the adjustments (HadSST2_97.5_pct_bias_1850on.txt.gz and HadSST2_2.5_pct_bias_1850on.txt.gz).

- Files showing the correction applied to the data e.g.:

HadSST2_bucket_correction_median.txt.gz - the corrections applied to the data 1850-1941

HadSST2_bucket_correction_2.5pc.txt.gz - the lower bound of the 95% confidence range of the uncertainties 1850-1941

HadSST2_bucket_correction_97.5pc.txt.gz - the upper bound of the 95% confidence range of the uncertainties 1850-1941

A 1 degree version of HadSST2 is also available.

Data were provided by the Met Office Hadley Centre. Dataset was produced by the Hadley Centre in collaboration with ICOADS.

Date (Publication): 2007-02-02T17:01:36

Date (Creation): 2007-02-02T17:01:36

Citation identifier: https://catalogue.ceda.ac.uk/uuid/df1caf8b2e473925944fdd8dd76e098c

Citation identifier: NCAS British Atmospheric Data Centre (NCAS BADC) / df1caf8b2e473925944fdd8dd76e098c

Point of contact

Organisation name	Electronic mail address	Role
Hadley Centre for Climate Prediction and Research (MOHC)	unknown	Author
NCAS British Atmospheric Data Centre (NCAS BADC)	badc@rl.ac.uk	Custodian
NCAS British Atmospheric Data Centre (NCAS BADC)	badc@rl.ac.uk	Distributor
NCAS British Atmospheric Data Centre (NCAS BADC)	badc@rl.ac.uk	pointofContact
NCAS British Atmospheric Data Centre (NCAS BADC)	badc@rl.ac.uk	Publisher

Maintenance and update frequency: Not planned

Update scope: Dataset

Keywords

Met Office
Hadley
SST
ocean
temperature

GEMET - INSPIRE themes, version 1.0

atmospheric conditions

Access constraints: Other restrictions

Other constraints: Restricted data: please submit an application using the REQUEST ACCESS link for access.

Use constraints: Other restrictions

Other constraints: Under the following licence https://artefacts.ceda.ac.uk/licences/specific_licences/ukmo_agreement.pdf, appropriate use of these data may fall under academic use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.

Spatial representation type: Grid

Language: English

Topic category

Climatology, meteorology, atmosphere

Begin date: 1850-01-01T00:00:00

End date: 2013-08-30T23:00:00

Unique resource identifier: WGS 84

Distribution format

Name	Version
ASCII and NetCDF

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://catalogue.ceda.ac.uk/uuid/df1caf8b2e473925944fdd8dd76e098c	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/badc/ukmo-hadsst2/data	DOWNLOAD

OnLine resource

Protocol	Linkage	Name
	http://dx.doi.org/10.1175/JCLI3637.1	Rayner N.A. et al, 2006

OnLine resource

Protocol	Linkage	Name
	https://artefacts.ceda.ac.uk/badc_datadocs/hadsst2/file_format.html	HadSST2 File Format Explained

OnLine resource

Protocol	Linkage	Name
	http://hadobs.metoffice.com/hadsst2/diagnostics/index.html	HadSST2 Diagnostics

Hierarchy level: Dataset

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication): 2010-12-08

Statement: HadSST2 was acquired in 2008 by the BADC from the Met Office Hadley Centre and has been routinely updated as is until 2013 at the BADC from the Hadley Centre.

Metadata

File identifier: df1caf8b2e473925944fdd8dd76e098c XML

Metadata language: English

Character set: UTF8

Parent identifier: Met Office HadSST2 (uninterpolated sea surface temperature) (1850-2013)
85650f53d79a7fc71e2815c7a1ae89c6

Hierarchy level: Dataset

Date stamp: 2026-03-11T03:00:29

Metadata standard name: UK GEMINI

Metadata standard version: 2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Point of contact

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