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HadISDH: gridded global monthly land surface humidity data version 4.0.0.2017f

This is the 4.0.0.2017f version of the HadISDH land data. These data are provided by the Met Office Hadley Centre. This version spans 1/1/1973 to 31/12/2017.

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). Data are provided in either NetCDF or ASCII format.

This version extends the 3.0.0.2016p version to the end of 2017 and constitutes a major update to HadISDH due to a change to using the 1981-2010 period as its climatological reference period both to make it more consistent with other monitoring products and to maximise station coverage now that it uses the larger station database of HadISD2. Users are advised to read the update document in the docs section for full details. This version now uses the 1981-2010 period as its climatological reference period both to make it more consistent with other monitoring products and to maximise station coverage now that it uses the larger station database of HadISD2.

Additionally, there has been a small methodological change. Stations with large adjustments made during homogenisation are removed based on thresholds for q (>3g/kg), RH (>15%rh), T (>5degC) and Td (>5degC) rather than just T and Td. This results in 54 stations being removed as opposed to 29 last year. All other processing steps for HadISDH remain identical.

The new version of HadISD2 (2.0.2.2017p) has pulled through some historical changes to stations which are passed on to HadISDH. This, and the additional year of data, results in small changes to station selection. The homogeneity adjustments differ slightly due to sensitivity to the addition and loss of stations, historical changes to stations previously included and the additional 12 months of data.

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 you must 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., 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.

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)
2018-04-11T14:18:04
Date (Creation)
2018-04-11T14:18:04
Identifier
https://catalogue.ceda.ac.uk/uuid/de33ae6e5b724a41be34d0f107a65ce2
Identifier
Centre for Environmental Data Analysis (CEDA) / de33ae6e5b724a41be34d0f107a65ce2
Identifier
doi / http://dx.doi.org/10.5285/de33ae6e5b724a41be34d0f107a65ce2
Author
  Met Office Hadley Centre (MOHC) - author
FitzRoy Road , Exeter , EX1 3PB , UK
Author
  Department of Geography, Maynooth University - author
Maynooth , Co Kildare , Ireland
Author
  National Centers for Environmental Information - NOAA (NCEI-NOAA) - author
National Centers for Environmental Information Federal Building , 151 Patton Avenue , Asheville , NC 28801-5 , USA
Author
  National Physical Laboratory (NPL) - author
Hampton Road , Teddington , Middlesex , TW11 0LW , UK
+44 20 8977 3222
Author
  University of East Anglia Climatic Research Unit (CRU) - author
University of East Anglia, School of Environmental Sciences , Faculty of Science, Norwich Research Park , Norwich , NR4 7TJ , United Kingdom
+44 (0) 1603 592542
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
  Centre for Environmental Data Analysis (CEDA) - point_of_contact
Rutherford Appleton Laboratory , Harwell , Oxon , 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
  • humidity
  • surface
  • land
  • gridded
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/non-commercial-government-licence/version/2/, appropriate use of these data may fall under personal, academic and policy 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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S
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Begin date
1973-01-01T00:00:00
End date
2017-12-31T23:59:59
Unique resource identifier
WGS 84
Distribution format
  • These data are provided in NetCDF and ASCII formats, descriptors of the file formats are included in Docs. ()

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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Download Data

OnLine resource
Met Office HadOBS twitter feed

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OnLine resource
Integrated surface database reference paper

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OnLine resource
HadISDH 2013 reference paper

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OnLine resource
HadISDH 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
Dunn, R. J. H., Willett, K. M., Parker, D. E., and Mitchell, L.: Expanding HadISD: quality-controlled, sub-daily station data from 1931, Geosci. Instrum. Method. Data Syst., 5, 473-491, doi:10.5194/gi-5-473-2016, 2016.

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OnLine resource
HadISDH update doc for v4.0.0.2017p

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OnLine resource
HadISDH data format v1

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OnLine resource
HadISDH process diagram

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Hierarchy level
dataset Dataset

Conformance result

Date (Publication)
2010-12-08
Statement
HadISDH is a global land surface humidity dataset and is produced by the Met Office Hadley Centre in collaboration with Maynooth University, NOAA NCEI, NPL and CRU. It is based on the quality controlled sub-daily HadISD from the Met Office Hadley Centre which is in turn based on the ISD dataset from NOAA's NCEI. It is passed to the BADC for archiving and distribution.
File identifier
de33ae6e5b724a41be34d0f107a65ce2 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
2025-11-15T03:15:49
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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