HadISDH blend: gridded global monthly land and ocean surface humidity data version 1.1.1.2020f

This is the HadISDH blend 1.1.1.2020f version of the Met Office Hadley Centre Integrated Surface Dataset of Humidity (HadISDH). HadISDH-blend is a near-global gridded monthly mean surface humidity climate monitoring product. It is created from in situ observations of air temperature and dew point temperature from ships and weather stations. The observations have been quality controlled and homogenised / bias adjusted. Uncertainty estimates for observation issues and gridbox sampling are provided (see data quality statement section below). These data are provided by the Met Office Hadley Centre. This version spans 1/1/1973 to 31/12/2020.



The data are monthly gridded (5 degree by 5 degree) fields. Products are available for temperature and six humidity variables: specific humidity (q), relative humidity (RH), dew point temperature (Td), wet bulb temperature (Tw), vapour pressure (e), dew point depression (DPD).



This version extends the 1.0.0.2019f version to the end of 2020. It combines HadISDH.land.4.3.1.2020f and HadISDH.marine.1.1.0.2020f and therefore their respective update notes. Users are advised to read the update documents in the Docs section for full details.



To keep informed about updates, news and announcements follow the HadOBS team on twitter @metofficeHadOBS.



For more detailed information e.g bug fixes, routine updates and other exploratory analysis, see the HadISDH blog: http://hadisdh.blogspot.co.uk/



References:



When using the dataset in a paper please cite the following papers (see Docs for link

to the publications) and this dataset (using the "citable as" reference):



Willett, K. M., Dunn, R. J. H., Kennedy, J. J. and Berry, D. I., 2020: Development of

the HadISDH marine humidity climate monitoring dataset. Earth System Sciences Data,

12, 2853-2880, https://doi.org/10.5194/essd-12-2853-2020



Freeman, E., Woodruff, S. D., Worley, S. J., Lubker, S. J., Kent, E. C., Angel, W. E.,

Berry, D. I., Brohan, P., Eastman, R., Gates, L., Gloeden, W., Ji, Z., Lawrimore, J.,

Rayner, N. A., Rosenhagen, G. and Smith, S. R., ICOADS Release 3.0: A major update to

the historical marine climate record. International Journal of Climatology.

doi:10.1002/joc.4775.



Willett, K. M., Dunn, R. J. H., Thorne, P. W., Bell, S., de Podesta, M., Parker, D. E.,

Jones, P. D., and Williams Jr., C. N.: HadISDH land surface multi-variable humidity and

temperature record for climate monitoring, Clim. Past, 10, 1983-2006,

doi:10.5194/cp-10-1983-2014, 2014.



Dunn, R. J. H., et al. 2016: Expanding HadISD: quality-controlled, sub-daily station

data from 1931, Geoscientific Instrumentation, Methods and Data Systems, 5, 473-491.



Smith, A., N. Lott, and R. Vose, 2011: The Integrated Surface Database: Recent

Developments and Partnerships. Bulletin of the American Meteorological Society, 92,

704-708, doi:10.1175/2011BAMS3015.1



We strongly recommend that you read these papers before making use of the data, more

detail on the dataset can be found in an earlier publication:



Willett, K. M., Williams Jr., C. N., Dunn, R. J. H., Thorne, P. W., Bell, S., de

Podesta, M., Jones, P. D., and Parker D. E., 2013: HadISDH: An updated land surface

specific humidity product for climate monitoring. Climate of the Past, 9, 657-677,

doi:10.5194/cp-9-657-2013.

Simple

Date (Publication)
2021-04-28T15:01:53
Date (Creation)
2021-04-28T15:01:53
Citation identifier
https://catalogue.ceda.ac.uk/uuid/8e90b16ddd2a484897ab9737c46d6204
Citation identifier
Centre for Environmental Data Analysis (CEDA) / 8e90b16ddd2a484897ab9737c46d6204
Point of contact
Organisation name Individual name Electronic mail address Role

Unavailable

Willett, Kate M.

Unavailable

 		Author

Unavailable

Dunn, Robert J. H.

Unavailable

 		Author

Unavailable

Kennedy, John J.

Unavailable

 		Author

Unavailable

Berry, David I.

Unavailable

 		Author

Unavailable

Thorne, Peter W.

Unavailable

 		Author

Unavailable

Bell, Stephanie

Unavailable

 		Author

Unavailable

de Podesta, Michael

Unavailable

 		Author

Unavailable

Parker, David E.

Unavailable

 		Author

Unavailable

Jones, Philip D.

Unavailable

 		Author

Unavailable

Williams Jr., Claude N.

Unavailable

 		Author

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Custodian

Met Office Hadley Centre (MOHC)

enquiries@metoffice.gov.uk

Owner

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Distributor

NERC EDS Centre for Environmental Data Analysis

support@ceda.ac.uk

pointofContact

Unavailable

Willett, Kate M.

Unavailable

 		pointofContact

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Publisher
Maintenance and update frequency
Not planned
Update scope
Dataset
Keywords

  • HadISDH

  • blend

  • humidity

  • surface

  • marine

  • gridded

  • station

  • specific humidity

  • temperature

  • dew point temperature

  • wet bulb temperature

  • dew point temperature

  • vapour pressure

  • in-situ

GEMET - INSPIRE themes, version 1.0

  • atmospheric conditions
Access constraints
Other restrictions
Other constraints
Public data: access to these data is available to both registered and non-registered users.
Use constraints
Other restrictions
Other constraints
Under the following licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/, appropriate use of these data may fall under any 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
N
S
E
W
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Begin date
1973-01-01T00:00:00
End date
2020-12-31T23:59:59
Unique resource identifier
WGS 84
Distribution format
Name Version

The data are NetCDF formatted.
Distributor contact
Organisation name Individual name Electronic mail address Role

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Distributor
OnLine resource
Protocol Linkage Name
https://catalogue.ceda.ac.uk/uuid/8e90b16ddd2a484897ab9737c46d6204

CEDA Data Catalogue Page
OnLine resource
Protocol Linkage Name
http://data.ceda.ac.uk/badc/ukmo-hadobs/data/insitu/MOHC/HadOBS/HadISDH-blend/mon/HadISDHTable/r1/v1-1-1-2020f/

DOWNLOAD
OnLine resource
Protocol Linkage Name
https://www.clim-past.net/9/657/2013/cp-9-657-2013.html

HadISDH.land 2013 paper
OnLine resource
Protocol Linkage Name
https://www.geosci-instrum-method-data-syst.net/5/473/2016/

HadISD reference paper
OnLine resource
Protocol Linkage Name
https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/joc.4775

ICOADS.3.0.0 reference paper
OnLine resource
Protocol Linkage Name
https://journals.ametsoc.org/doi/abs/10.1175/2011BAMS3015.1

ISD reference paper
OnLine resource
Protocol Linkage Name
https://twitter.com/metofficeHadOBS

Met Office HadOBS twitter feed
OnLine resource
Protocol Linkage Name
https://www.clim-past.net/10/1983/2014/cp-10-1983-2014.html

HadISDH.land 2014 reference paper
OnLine resource
Protocol Linkage Name
http://www.metoffice.gov.uk/hadobs/hadisdh/

HadISDH Homepage
OnLine resource
Protocol Linkage Name
http://hadisdh.blogspot.co.uk/

HadISDH blog
OnLine resource
Protocol Linkage Name
https://dap.ceda.ac.uk/badc/ukmo-hadobs/docs/HadISDH/HadISDH.land.4.3.1.2020f_update.pdf

HadISDH land update doc for version 4.3.1.2020f
OnLine resource
Protocol Linkage Name
https://dap.ceda.ac.uk/badc/ukmo-hadobs/docs/HadISDH/HadISDH.marine.1.1.0.2020f_update.pdf

HadISDH marine update doc for version 1.1.0.2020f
OnLine resource
Protocol Linkage Name
https://zenodo.org/record/7357311

HadISDH Data Format v2
OnLine resource
Protocol Linkage Name
https://zenodo.org/record/7357309

HadISDH.marine process diagram
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

HadISDH.blend is a global land (~2 m) and ocean (~10 m) surface humidity dataset and is produced by the Met Office Hadley Centre in collaboration with CRU, Maynooth University, NPL, NOAA-NCEI and NOC. It is based on the sub-daily station observations from HadISD (originally from ISD) and ship observations from ICOADS. It is passed to the Centre for Environmental Data Analysis (CEDA) for archiving and distribution. Gridboxes containing both land and marine data are combined using a weighted average with a minimum and maximum weighting of 25% and 75% respectively.

Metadata

File identifier
8e90b16ddd2a484897ab9737c46d6204 XML
Metadata language
English
Character set
UTF8
Parent identifier
HadISDH: global surface humidity data

251474c7b09449d8b9e7aeaf1461858f
Hierarchy level
Dataset
Date stamp
2026-02-16T03:20:31
Metadata standard name
UK GEMINI
Metadata standard version

2.3
Metadata author
Organisation name Individual name Electronic mail address Role

Centre for Environmental Data Analysis (CEDA)

support@ceda.ac.uk

Point of contact
 
 

Overviews

Spatial extent

thumbnail

Keywords

GEMET - INSPIRE themes, version 1.0

atmospheric conditions


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