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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
Identifier
https://catalogue.ceda.ac.uk/uuid/8e90b16ddd2a484897ab9737c46d6204
Identifier
Centre for Environmental Data Analysis (CEDA) / 8e90b16ddd2a484897ab9737c46d6204
Author
  Unavailable - Willett, Kate M. ( author )
Author
  Unavailable - Dunn, Robert J. H. ( author )
Author
  Unavailable - Kennedy, John J. ( author )
Author
  Unavailable - Berry, David I. ( author )
Author
  Unavailable - Thorne, Peter W. ( author )
Author
  Unavailable - Bell, Stephanie ( author )
Author
  Unavailable - de Podesta, Michael ( author )
Author
  Unavailable - Parker, David E. ( author )
Author
  Unavailable - Jones, Philip D. ( author )
Author
  Unavailable - Williams Jr., Claude N. ( author )
Custodian
  Centre for Environmental Data Analysis (CEDA) - custodian
Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom
01235446432
Owner
  Met Office Hadley Centre (MOHC) - data_owner
FitzRoy Road , Exeter , EX1 3PB , UK
Distributor
  Centre for Environmental Data Analysis (CEDA) - distributor
Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom
01235446432
pointofContact
  NERC EDS Centre for Environmental Data Analysis - point_of_contact
RAL Space , STFC Rutherford Appleton Laboratory, Harwell Campus , Didcot , OX11 0QX , United Kingdom
01235446432
pointofContact
  Unavailable - Willett, Kate M. ( point_of_contact )
Publisher
  Centre for Environmental Data Analysis (CEDA) - publisher
Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom
01235446432
Maintenance and update frequency
notPlanned Not planned
Update scope
dataset 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
otherRestrictions Other restrictions
Other constraints
Public data: access to these data is available to both registered and non-registered users.
Use constraints
otherRestrictions 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 Grid
Metadata language
EnglishEnglish
Topic category
  • Climatology, meteorology, atmosphere
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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
  • The data are NetCDF formatted. ()

Distributor
  Centre for Environmental Data Analysis (CEDA) - Data Center Contact
Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom
01235446432
OnLine resource
CEDA Data Catalogue Page

Detail and access information for the resource

OnLine resource
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OnLine resource
HadISDH.land 2013 paper

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OnLine resource
HadISD reference paper

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OnLine resource
ICOADS.3.0.0 reference paper

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ISD reference paper

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OnLine resource
Met Office HadOBS twitter feed

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HadISDH.land 2014 reference paper

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OnLine resource
HadISDH Homepage

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OnLine resource
HadISDH blog

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OnLine resource
HadISDH land update doc for version 4.3.1.2020f

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OnLine resource
HadISDH marine update doc for version 1.1.0.2020f

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OnLine resource
HadISDH Data Format v2

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OnLine resource
HadISDH.marine process diagram

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Hierarchy level
dataset Dataset

Conformance result

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.
File identifier
8e90b16ddd2a484897ab9737c46d6204 XML
Metadata language
EnglishEnglish
Character set
8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 UTF8
Parent identifier
HadISDH: global surface humidity data 251474c7b09449d8b9e7aeaf1461858f
Hierarchy level
dataset Dataset
Date stamp
2025-11-15T03:21:04
Metadata standard name
UK GEMINI
Metadata standard version
2.3
Point of contact
  Centre for Environmental Data Analysis (CEDA)
Rutherford Appleton Laboratory , Harwell , Oxon , OX11 0QX , United Kingdom
01235446432
 
 

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Spatial extent

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Keywords

GEMET - INSPIRE themes, version 1.0
atmospheric conditions

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