• NERC Data Catalogue Service
  •  
  •  
  •  

Met Office Globally gridded radiosonde temperature anomalies HadAT Datasets (1958-2012)

The HadAT data are global radiosonde gridded temperature anomalies at standard levels (850, 700, 500, 300, 200, 150, 100, 50, and 30hPa) in the troposphere and in the lower stratosphere from 1958 to December 2012. This monthly timeseries are available on a 10 degree longitude by 5 degree latitude basis. This dataset supersedes the HadRT dataset. All values are anomalies relative to the monthly 1966-95 climatology.

The gridded product is derived from 676 individual radiosonde stations with long-term records. Because of the criteria of data longevity the resulting dataset is limited to land areas and primarily Northern Hemisphere locations. Radiosondes are single launch instruments and there have been many changes in instruments and observing practices with time. HadAT has used a neighbour-based approach to attempt to adjust for these effects and produce a homogeneous product suitable for climate applications.

Zonal averages were created by averaging all available gridbox values in each 5 degree latitude band. Large scale mean timeseries for the globe and the tropics (defined here as 20N to 20S) are simply cos(lat) weighted zonal mean field values. This reduces the spatial sampling bias towards Northern Hemisphere mid-latitudes. Other plausible large-scale averaging techniques would impact the timeseries values calculated.

Cautionary note from the Met Office Hadley Centre

It is important to note that significant uncertainty exists in radiosonde datasets reflecting the large number of choices available to researchers in their construction and the many heterogeneities in the data. To this end we strongly recommend that users consider, in addition to HadAT, the use of one or more of the following products to ensure their research results are robust. Currently, other radiosonde products of climate quality available from other centres for bona fide research purposes are:

- Radiosonde Atmospheric Temperature Products for Assessing Climate (RATPAC)

- RAdiosonde OBservation COrrection using REanalyses and Radiosonde Innovation Composite Homogenization )

- IUK (Iterative Universal Kriging) Radiosonde Analysis Project

Also see a comparison with Microwave Sounding Unit (MSU) data by Remote Sensing Systems (see links under Docs tab below) .

Simple

Date (Publication)
2005-12-10T03:04:09
Date (Creation)
2005-12-10T03:04:09
Identifier
https://catalogue.ceda.ac.uk/uuid/1205818e121bd8c12a6029f9cbd11a18
Identifier
NCAS British Atmospheric Data Centre (NCAS BADC) / 1205818e121bd8c12a6029f9cbd11a18
Author
  Hadley Centre for Climate Prediction and Research (MOHC) - author
Met Office , Exeter ,
Author
  Unavailable - Tett, Simon F.B. ( author )
Author
  Unavailable - Thorne, P.W. ( author )
Author
  Unavailable - Parker, Douglas E. ( author )
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
unknown Unknown
Update scope
series Series
Keywords
  • Met Office
  • HADAT
  • radiosonde
  • temperature anomalies
  • Hadley
GEMET - INSPIRE themes, version 1.0
  • atmospheric conditions
Access constraints
otherRestrictions Other restrictions
Other constraints
Access to data within this collection is restricted. Please see the individual datasets within this collection for further access details.
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
N
S
E
W
thumbnail


Begin date
1958-01-01T00:00:00
End date
2012-12-31T00:00:00
Unique resource identifier
WGS 84
Distribution format
  • Contact data centre for format details. ()

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
BADC Doc: Summary of HadAT development

No further details.

OnLine resource
BADC Doc: HadAT Uncertainty estimates

No further details.

OnLine resource
Lanzante, J.R. et al., 2003

No further details.

OnLine resource
Lanzante, J.R. et al., 2003

No further details.

OnLine resource
Thorne P.W. et al., 2005; Revisiting radiosonde upper air temperatures from 1958 to 2002, JGR-Atmospheres, D18, 110

No further details.

OnLine resource
RAdiosonde OBservation COrrection using REanalyses and Radiosonde Innovation Composite Homogenization

No further details.

OnLine resource
HadAT Typically used Diagrams

No further details.

OnLine resource
Coleman, H. and Thorne, P.W., 2005

No further details.

OnLine resource
Radiosonde Atmospheric Temperature Products for Assessing Climate (RATPAC)

No further details.

OnLine resource
IUK (Iterative Universal Kriging) Radiosonde Analysis Project

No further details.

OnLine resource
A comparison with Microwave Sounding Unit (MSU) data

No further details.

Hierarchy level
series Series

Conformance result

Date (Publication)
2010-12-08
Statement
Please see data lineage statements for each dataset within this collection for data lineage details.
File identifier
1205818e121bd8c12a6029f9cbd11a18 XML
Metadata language
EnglishEnglish
Character set
8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 UTF8
Hierarchy level
series Series
Hierarchy level name
series
Date stamp
2025-11-15T03:26:54
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

Provided by

logo

Share on social sites

Access to the portal
Read here the full details and access to the data.

Associated resources

Not available


  •  
  •  
  •