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Monthly Gridded Met Office Historical Marine Air Temperature (MOHMATN4) anomalies (1856-2006)

MOHMAT, (Met Office Historical Marine Air Temperature) is a gridded dataset of marine air temperature anomalies covering the period 1856-2006. The current version of the dataset is MOHMAT4, which is described in reference below (under Doc tab).

MOHMAT is produced by taking in-situ measurements of MAT from ships and buoys, rejecting measurements which fail quality checks, converting the measurements to anomalies by subtracting climatological values from the measurements, and averaging the resulting anomalies on a 5 by 5 degree monthly grid. Note that only night-time data are used, because day-time data are corrupted by heat island effects.

Up to 1996 the measurements used are those in the U.K. Marine Data Bank; more recent years use data coming in through the GTS. MOHMAT is no longer updated.

After gridding the anomalies, bias corrections are applied to remove spurious trends caused by changes in ship deck heights and various unusual operational practices, and the data are smoothed to reduce noise.

The data are provided by the Met Office.

Simple

Date (Publication)
2007-02-02T17:08:47
Date (Creation)
2007-02-02T17:08:47
Identifier
https://catalogue.ceda.ac.uk/uuid/365e5e62328975643e320d418bc34e95
Identifier
NCAS British Atmospheric Data Centre (NCAS BADC) / 365e5e62328975643e320d418bc34e95
Author
  Hadley Centre for Climate Prediction and Research (MOHC) - author
Met Office , Exeter ,
Custodian
  NCAS British Atmospheric Data Centre (NCAS BADC) - custodian
British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK
+44(0)1235 446432
Distributor
  NCAS British Atmospheric Data Centre (NCAS BADC) - distributor
British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK
+44(0)1235 446432
pointofContact
  NCAS British Atmospheric Data Centre (NCAS BADC) - point_of_contact
British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK
+44(0)1235 446432
Publisher
  NCAS British Atmospheric Data Centre (NCAS BADC) - publisher
British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK
+44(0)1235 446432
Maintenance and update frequency
notPlanned Not planned
Update scope
dataset Dataset
Keywords
  • SST
  • MOHMAT
  • Met Office
  • Hadley
  • anomalies
GEMET - INSPIRE themes, version 1.0
  • atmospheric conditions
Access constraints
otherRestrictions Other restrictions
Other constraints
Restricted data: please submit an application using the REQUEST ACCESS link for access.
Use constraints
otherRestrictions 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 Grid
Metadata language
EnglishEnglish
Topic category
  • Climatology, meteorology, atmosphere
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Begin date
1856-01-01T00:00:00
End date
2006-08-30T23:00:00
Unique resource identifier
WGS 84
Distribution format
  • Data are ASCII formatted ()

Distributor
  NCAS British Atmospheric Data Centre (NCAS BADC) - Data Center Contact
British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK
+44(0)1235 446432
OnLine resource
CEDA Data Catalogue Page

Detail and access information for the resource

OnLine resource
DOWNLOAD

Download Data

OnLine resource
Parker D.E. et al., 1995

No further details.

OnLine resource
Rayner N.A. et al., 2003

No further details.

OnLine resource
Folland C.K. et al., 2003

No further details.

OnLine resource
MOHMATN4 File Format Explained

No further details.

Hierarchy level
dataset Dataset

Conformance result

Date (Publication)
2010-12-08
Statement
Data files acquired by the BADC from the Met Office Hadley Centre in 2000.
File identifier
365e5e62328975643e320d418bc34e95 XML
Metadata language
EnglishEnglish
Character set
8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 UTF8
Parent identifier
Met Office Global Ice coverage and Sea Surface Temperatures (GISST), and Monthly night marine air temperature/SST anomalies (MOHMATN4)/(MOHSST6) Data (1856-2006) fda780a7697f384010674ebb1d5e4f23
Hierarchy level
dataset Dataset
Date stamp
2025-11-15T03:01:54
Metadata standard name
UK GEMINI
Metadata standard version
2.3
Point of contact
  NCAS British Atmospheric Data Centre (NCAS BADC)
British Atmospheric Data Centre , STFC Rutherford Appleton Laboratory , Harwell Oxford , OX11 0QX , UK
+44(0)1235 446432
 
 

Overviews

Spatial extent

N
S
E
W
thumbnail


Keywords

GEMET - INSPIRE themes, version 1.0
atmospheric conditions

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