062942e96a6e4567b2bc47045be910a7 English 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 251474c7b09449d8b9e7aeaf1461858f dataset NERC EDS Centre for Environmental Data Analysis 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk pointOfContact 2026-05-06T02:26:49 UK GEMINI 2.3 WGS 84 HadISDH.land: gridded global monthly land surface humidity data version 4.4.0.2021f 2022-05-26T13:29:47 publication 2022-05-26T13:29:47 creation https://catalogue.ceda.ac.uk/uuid/062942e96a6e4567b2bc47045be910a7 062942e96a6e4567b2bc47045be910a7 NERC EDS Centre for Environmental Data Analysis 10.5285/062942e96a6e4567b2bc47045be910a7 doi This is the HadISDH.land 4.4.0.2021f version of the Met Office Hadley Centre Integrated Surface Dataset of Humidity (HadISDH). HadISDH.land is a near-global gridded monthly mean land surface humidity climate monitoring product. It is created from in situ observations of air temperature and dew point temperature from weather stations. The observations have been quality controlled and homogenised. Uncertainty estimates for observation issues and gridbox sampling are provided (see data quality statement section below). The data are provided by the Met Office Hadley Centre and this version spans 1/1/1973 to 31/12/2021. 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 previous version to the end of 2021. Users are advised to read the update document in the Docs section for full details on all changes from the previous release. As in previous years, the annual scrape of NOAAs Integrated Surface Dataset for HadISD.3.1.2.202101p, which is the basis of HadISDH.land, has pulled through some historical changes to stations. 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 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., 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. Willett, Kate M. Unavailable author Unavailable author Dunn, Robert J. H. Unavailable author Unavailable author Thorne, Peter W. Unavailable author Unavailable author Bell, Stephanie Unavailable author Unavailable author de Podesta, Michael Unavailable author Unavailable author Parker, David E. Unavailable author Unavailable author Jones, Philip D. Unavailable author Unavailable author Williams Jr., Claude N. Unavailable author Unavailable author NERC EDS Centre for Environmental Data Analysis custodian 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk custodian Met Office Hadley Centre (MOHC) data_owner FitzRoy Road Exeter EX1 3PB UK enquiries@metoffice.gov.uk owner NERC EDS Centre for Environmental Data Analysis distributor 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk distributor NERC EDS Centre for Environmental Data Analysis point_of_contact 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk pointofContact Willett, Kate M. Unavailable point_of_contact Unavailable pointofContact NERC EDS Centre for Environmental Data Analysis publisher 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk publisher notPlanned dataset HadISDH humidity surface land gridded station specific humidity temperature dew point temperature wet bulb temperature dew point temperature vapour pressure in-situ atmospheric conditions theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication otherRestrictions Public data: access to these data is available to both registered and non-registered users. otherRestrictions 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, policy, non-commercial and attribution required 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. grid English climatologyMeteorologyAtmosphere -180.0 180.0 -90.0 90.0 1973-01-01T00:00:00 2021-12-31T23:59:59 Data are netCDF formatted NERC EDS Centre for Environmental Data Analysis Data Center Contact 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk distributor https://catalogue.ceda.ac.uk/uuid/062942e96a6e4567b2bc47045be910a7 CEDA Data Catalogue Page Detail and access information for the resource information http://data.ceda.ac.uk/badc/ukmo-hadobs/data/insitu/MOHC/HadOBS/HadISDH/mon/HadISDHTable/r1/v4-4-0-2021f/ DOWNLOAD Download Data download https://twitter.com/metofficeHadOBS Met Office HadOBS twitter feed No further details. information http://journals.ametsoc.org/doi/abs/10.1175/2011BAMS3015.1 Integrated surface database reference paper No further details. information https://zenodo.org/record/7356965/files/HadISDH.2.0.0Process.png HadISDH process diagram No further details. information http://www.clim-past.net/9/657/2013/cp-9-657-2013.html HadISDH 2013 reference paper No further details. information https://zenodo.org/record/7357311 HadISDH Data Format v2 No further details. information http://www.clim-past.net/10/1983/2014/cp-10-1983-2014.html HadISDH 2014 reference paper No further details. information http://www.geosci-instrum-method-data-syst.net/5/473/2016/gi-5-473-2016.html 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. No further details. information http://www.metoffice.gov.uk/hadobs/hadisdh/ HadISDH Homepage No further details. information http://hadisdh.blogspot.co.uk/ HadISDH blog No further details. information https://doi.org/10.5281/zenodo.6532614 HadISDH update document for v4.4.1.2021f No further details. information dataset 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 2010-12-08 HadISDH.land is a global land surface (~2 m) 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 CEDA for archiving and distribution.