Dataset
HadISD: Global sub-daily, surface meteorological station data, 1931-2015, v1.0.4.2015f
Abstract
This is version 1.0.4.2015f of HadISD (27 April 2015) the Met Office Hadley Centre's global sub-daily data, extending v1.0.3.2014f to span 1/1/1931 - 31/12/2015.
The quality controlled variables in this dataset are: temperature, dewpoint temperature, sea-level pressure, wind speed and direction, cloud data (total, low, mid and high level). Past significant weather and precipitation data are also included, but have not been quality controlled, their quality and completeness cannot be guaranteed. Quality control flags and data values which have been removed in the quality control process are also provided along with a station listing with IDs, names and location information. The data are provided as one NetCDF file per station.
The data are provided as one NetCDF file per station. Files in the station_data folder station data files have the format "station_code"_HadISD_HadOBS_19310101-20151231_v1-0-4-2015f.nc. The station codes can be found under the docs tab or on the archive beside the station_data folder. The station codes file has five columns as follows: 1) station code, 2) station name 3) station latitude 4) station longitude 5) station height.
To keep up to date with 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 HadISD blog: http://hadisd.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) :
Dunn, R. J. H., et al. (2012), HadISD: A Quality Controlled global synoptic report database for selected variables at long-term stations from 1973-2011, Climate of the Past
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
For a homogeneity assessment of HadISD please see this following reference
Dunn, R. J. H., K. M. Willett, C. P. Morice, and D. E. Parker. "Pairwise homogeneity assessment of HadISD." Climate of the Past 10, no. 4 (2014): 1501-1522. doi:10.5194/cp-10-1501-2014, 2014.
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: http://www.nationalarchives.gov.uk/doc/non-commercial-government-licence/version/2/. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
HadISD the global sub-daily station dataset is produced by the Met Office Hadley Centre. It is based on the ISD dataset from NOAA's NCDC. HadISD has been passed to the BADC for archiving and distribution. |
| Data Quality: |
Uncertainty estimates are provided as part of the dataset both at the station and gridbox level, this includes information covering station uncertainty (climatological, homogenisation and measurement uncertainty), gridbox spatial and temporal sampling uncertainty and combined station and sampling uncertainty. See dataset associated documentation for full details.
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| File Format: |
Data are NetCDF formatted.
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Process overview
| Title | HadISD station data processing performed at the Met Office Hadley Centre |
| Abstract | The HadISD station data were produced by the Met Office Hadley Centre. Individual station data within the ISD were selected to be merged to form composite stations using a hierarchical scoring system. Then stations were selected on the basis of their length of record and reporting frequency. A final set of 6103 stations were passed through a suite of automated quality control tests designed to remove bad data whilst keeping the extremes. None of the ISD flags were used in this process. The QC tests focussed on the temperature, dewpoint temperature and sea-level pressure variables, although some were applied to the wind speed and direction and cloud data. The data files also contain other variables which were pulled through from the raw ISD record, but have had no QC applied (e.g. cloud base and precipitation depth). Some final filtering was performed to select those stations which in our opinion are most useful for climate studies. Note: These data have not yet been homogenised and so trend fitting should be undertaken with caution. The homogeneity has been assessed and results are available from the Met Office Hadley Centre HadISD website (http://www.metoffice.gov.uk/hadobs/hadisd/). For further details see: Dunn, R. J. H., et al. (2012), HadISD: A Quality Controlled global synoptic report database for selected variables at long-term stations from 1973-2011, Climate of the Past and Dunn, R. J. H., et al. (2014), Pairwise Homogeneity Assessment of HadISD, Climate of the Past, 10, 1501-1522 (see Docs for links to publications). |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
- standard_name: cloud_base_altitude
- units: metres
- long_name: Cloud base of lowest cloud layer nearest to reporting hour
- var_id: cbase
- names: cloud_base_altitude, Cloud base of lowest cloud layer nearest to reporting hour
- units: mm
- standard_name: lwe_thickness_of_precipitation_amount
- long_name: Depth of precipitation reported
- var_id: precipitation-amount
- names: lwe_thickness_of_precipitation_amount, Depth of precipitation reported
- standard_name: dew_point_temperature
- var_id: tds
- units: degreeC
- long_name: Dew point temperatures nearest to reporting hour
- names: dew_point_temperature, Dew point temperatures nearest to reporting hour
- standard_name: air_temperature
- var_id: tas
- units: degreeC
- long_name: Dry bulb temperatures nearest to reporting hour
- names: air_temperature, Dry bulb temperatures nearest to reporting hour
- units: hr
- long_name: Period of precipitation report
- var_id: precip1_period
- names: Period of precipitation report
- units: 1
- long_name: Quality Control status for individual obs
- var_id: quality_control_flags
- names: Quality Control status for individual obs
- units: hPa
- var_id: psl
- standard_name: air_pressure_at_sea_level
- long_name: Reported sea level pressure
- names: air_pressure_at_sea_level, Reported sea level pressure
- var_id: stationname
- long_name: Station ID number
- names: Station ID number
- units: 1
- long_name: Station reports of past significant weather phenomena
- var_id: pastsigwx1
- standard_name: past_significant_weather
- names: Station reports of past significant weather phenomena, past_significant_weather
- units: 1
- standard_name: cloud_area_fraction
- var_id: clt
- long_name: Total cloud cover derived in priority order GA, GF, GD - see ISD documentation
- names: cloud_area_fraction, Total cloud cover derived in priority order GA, GF, GD - see ISD documentation
- standard_name: wind_from_direction
- units: Degrees
- long_name: Wind Direction
- var_id: wd
- names: Wind Direction, wind_from_direction
- units: metres per second
- standard_name: wind_speed_of_gust
- long_name: Wind Gust speed
- var_id: wg
- names: wind_speed_of_gust, Wind Gust speed
- units: metres per second
- standard_name: wind_speed
- long_name: Wind speed
- var_id: ws
- names: Wind speed, wind_speed
- standard_name: altitude
- var_id: altitude
- units: meters
- long_name: altitude of station site
- names: altitude, altitude of station site
- units: 1
- long_name: high cloud cover derived in priority order GA, GF, GD - see ISD documentation. Units are Oktas
- var_id: clhigh
- names: high cloud cover derived in priority order GA, GF, GD - see ISD documentation. Units are Oktas
- units: 1
- long_name: low cloud cover derived in priority order GA, GF, GD - see ISD documentation. Units are Oktas
- var_id: cllow
- names: low cloud cover derived in priority order GA, GF, GD - see ISD documentation. Units are Oktas
- units: 1
- long_name: mid cloud cover derived in priority order GA, GF, GD - see ISD documentation. Units are Oktas
- var_id: clmid
- names: mid cloud cover derived in priority order GA, GF, GD - see ISD documentation. Units are Oktas
- long_name: station ID code at time step
- var_id: station_identification_code
- names: station ID code at time step
Co-ordinate Variables
- units: degrees_north
- standard_name: latitude
- var_id: latitude
- long_name: station latitude
- names: latitude, station latitude
- units: degrees_east
- standard_name: longitude
- var_id: longitude
- long_name: station longitude
- names: longitude, station longitude
- long_name: time
- standard_name: time
- var_id: time
- names: time
Temporal Range
1931-01-01T00:00:00
2015-12-31T23:59:59
Geographic Extent
90.0000° |
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-180.0000° |
180.0000° |
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-90.0000° |