The details of these areas can be found in the UKCP18 guidance notes and the associated shapefiles. The re-gridding is conducted through averaging of all 1km grid points that fall within each of the coarser resolution grid cells.Īrea averages are also produced based on averaging the 1km grid across a set of geographical regions to provide spatial statistics for country, administrative regions and river basins. Large and medium scale topographic mapping and engineering survey. All the gridded datasets use the same grid projection. EPSG:27700 Projected coordinate system for United Kingdom (UK) - offshore to boundary of UKCS within 4946'N to 6101'N and 733'W to 333'E onshore Great Britain (England, Wales and Scotland). To facilitate comparison of the observational dataset with the UKCP18 climate projections the dataset is also provided at 12km, 25km and 60km resolution. The HadUK-Grid dataset is produced on a 1km x 1km grid resolution on the Ordnance Survey's National Grid Standard reference climatology period providing monthly, seasonal and annual averages for 1961 to 1990Ģ0 year reference climatology period provided for use with UKCP18 products Total precipitation amount over the calendar month, season or year (mm)ĭuration of bright sunshine during the month, season or year (hours)Īverage of hourly mean wind speed at a height of 10 m above ground level over the month, season or year (knots)Īverage of hourly (or 3-hourly) mean sea level pressure over the month, season or year (hPa)Īverage of hourly (or 3-hourly) relative humidity over the month, season or year (%)Īverage of hourly (or 3-hourly) vapour pressure over the month, season or year (hPa)Ĭount of days when the grass minimum temperature is below 0 oC (days)Ĭount of days with greater than 50% of the ground covered by snow at 0900 UTC (days) Historical Map Data is offered as black and white raster data in a range of formats, supplied on DVD or as a Web Mapping Service. Monthly, seasonal and annual climate variables Climate VariableĪverage of daily maximum air temperature over the calendar month, season or year ( oC)Īverage of daily minimum air temperature over the calendar month, season or year ( oC)Īverage of daily mean air temperature over the calendar month, season or year ( oC) In 1944 45 OS adopted the National Grid and the entire country’s mapping was transferred to the National Grid projection that we use to this day. Total precipitation amount measured between 0900 UTC on day D and 0900 on day D+1 (mm)
#Uk national grid mapping how to
References How to convert latitude and longitude to a British National Grid Reference. If you wish to find the NGR from Ireland, make sure to tick on the option 'Output NGR for Ireland'. You will then see the Northings, Eastings and National Grid Reference (NGR) below the map. Minimum air temperature measured between 0900 UTC on day D- UTC on day D ( oC) Click on the map anywhere in Britain (Scotland, England and Wales).
Maximum air temperature measured between 0900 UTC on day D and 0900 UTC on day D+1 ( oC)
The HadUK-Grid gridded and regional land surface climate observation datasets are provided under open government licence.