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Unit
Unit value
Time steps
Hourly
3 Hourly
6 Hourly
Daily
Time interpretation
Time interpretation value
Bits per value

The bitsPerValue determines the relative size of the data download required for each parameter. The bitsPerValue ranges from 12 to 20 bits for our current parameters.

Note the data download size is not a direct multiplier of the bitsPerValue as there are standard overheads within the generated GRIB files which are common for all parameters. However, the bitsPerValue is a good guide to the relative cost of each parameter.
BitsPerValue value
Level Type
Level type value
Parameter ID
Parameter ID value
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Application name

Your application name is used as a link to our gateway through which your API requests are processed. On subscription we automatically create an application for you with a default name. The application name has no bearing on how things are processed.

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By ordering products from the Met Office Weather DataHub and clicking “confirm”, you are agreeing to be bound by the Met Office Weather DataHub Terms and Conditions which apply to the order.

Should you wish to discuss licensing terms, then please call 0033 678 3454 or email licensing@metoffice.gov.uk

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About monthly data usage

Data plans

All data plans are managed in GBs worth of data but note we use 1,024 conversion for all our plans. So 1,024 GB is equivalent to 1 TB (Terabyte). Strictly speaking this is TiB and GiB i.e. Tebibyte and Gigibyte

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About monthly data usage

Estimate monthly usage

Estimated order size if all selected data for all runs is taken based on an expected file size per parameter. Note this is a guide only and actual sizes for each parameter will vary.

Whilst every effort has been made to make the estimated file download sizes accurate customers should check the projected figures which are based on actual downloads as well as the estimated file sizes.

Usage this month

This figure is the actual data transferred for this calendar month so far.

Projected Monthly Usage

The projected monthly usage is calculated by:

  • retrieving the amount of data downloaded in the last 30 days
  • divide by the number of active days (>0 bytes downloaded) to get a daily average
  • multiply by the number of days in the current month for maximum monthly usage
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Order Naming

Note when used in the API the order name/ id is transformed by substituting spaces with hyphens and all letters are lowercase e.g. 'GLOBAL10k 12amRun' becomes 'global10k-12amrun'

For the avoidance of doubt the transformed order id to use in the API reproduced below in the Delivery section

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Taxpayer Identification Number (TIN)

The taxpayer identification number (TIN) is the unique identifier assigned to the Account Holder by the tax administration in the Account Holder’s jurisdiction of tax residence. It is a unique combination of letters and/or numbers used to identify an individual or entity for the purposes of administering the tax laws of that jurisdiction.

For more information, please see https://www.gov.uk/hmrc-internal-manuals/international-exchange-of-information/ieim402040

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Overview

Atmospheric Model Data

Our Atmospheric model data is supplied in a format known as GRIB2 (Gridded Binary or General Regularly-distributed Information in binary form). GRIB2 is a concise data format commonly used in meteorology to store historical and forecast weather data, and the format is sponsored by the World Meteorological Organisation (WMO).

Model Specification

  • Global deterministic 10km

    Domain

    Global - region can be selected

    Resolution

    Approx. 0.09 degrees - 10km (2,560 x 1,920 grid points)

    Projection

    Equirectangular Latitude-Longitude

    Parameters

    Pick and choose from available model parameters across:

    • Single level (surface, atmosphere and specific level)
    • Pressure levels from 1000hPa to 20hPa (33 levels available)
    • Height levels from 5m to 6000m (34 levels available)
    • Depth levels from 0.05m to 2m (4 levels available)

    Time steps

    Available time steps (from model run time)

    • Every hour from 0 to 54 hours
    • Every 3 hours between 57 to 144 hours
    • Every 6 hours between 150 to 168 hours

    Model runs

    Full runs (to 168 hours) - 00:00, 12:00
    Shortened runs (to 66 hours) - 06:00, 18:00
    All run times in UTC.

    Delivery

    API

    Format

    GRIB2 - Gridded Binary Format

  • UK deterministic 2km (standard)

    Domain

    UK 2km model - full geographical domain - no regional subsetting

    Resolution

    Approx. 0.018 degrees (2km)

    Projection

    Lambert Azimuthal Equal Area (Standard grid)

    Parameters

    Pick and choose from available model parameters across:

    • Single level (surface, atmosphere and specific level)
    • Pressure levels from 1000hPa to 20hPa (33 levels available)
    • Height levels from 5m to 6000m (34 levels available)
    • Depth levels from 0.05m to 2m (4 levels available)

    Time steps

    Available time steps (from model run time)

    • Every hour from 0 to 54 hours
    • Every 3 hours between 57 to 120 hours

    Model runs

    Every hour (with varying forecast length)

    Delivery

    API

    Format

    GRIB2 - Gridded Binary Format

  • UK deterministic 2km (Latitude-Longitude projection)

    Notes

    This projection is interpolated from a UK Lambert Azimuthal Equal Area (standard grid) which could degrade the accuracy of the data. Click here for the impact of regridding.

    Domain

    UK model with regional subsetting

    Resolution

    Approx. 0.018 degrees (2km)

    Projection

    Equirectangular Latitude-Longitude

    Parameters

    Pick and choose from available model parameters across:

    • Single level (surface, atmosphere and specific level)
    • Pressure levels from 1000hPa to 20hPa (33 levels available)
    • Height levels from 5m to 6000m (34 levels available)
    • Depth levels from 0.05m to 2m (4 levels available)

    Time steps

    Available time steps (from model run time)

    • Every hour from 0 to 54 hours
    • Every 3 hours between 57 to 120 hours

    Model runs

    Every hour (with varying forecast length)

    Delivery

    API

    Format

    GRIB2 - Gridded Binary Format

  • Met Office Global and Regional Ensemble Prediction System - Global 20km

    Notes

    Met Office Global and Regional Ensemble Prediction System - Global. MOGREPS-G is a probabilistic forecast model generating 18 perturbations of the forecast based on slightly different starting conditions. Orders are fulfilled over all 18 forecasts so data volumes can be very high.

    Domain

    Global - region can be selected

    Resolution

    20km (1,280 x 960 grid points)

    Projection

    Equirectangular Latitude-Longitude

    Parameters

    Pick and choose from available model parameters across:

    • Single level (surface, atmosphere and specific level)
    • Pressure levels from 1000hPa to 20hPa (33 levels available)
    • Height levels from 5m to 6000m (34 levels available)
    • Depth levels from 0.05m to 2m (4 levels available)

    Time steps

    Available time steps (from model run time)

    • Every hour from 0 to 132 hours
    • Every 3 hours between 135 to 198 hours

    Model runs

    00:00, 06:00, 12:00, 18:00
    All run times in UTC.

    Delivery

    API

    Format

    GRIB2 - Gridded Binary Format

  • Met Office Global and Regional Ensemble Prediction System - UK 2km

    Notes

    Met Office Global and Regional Ensemble Prediction System - UK. MOGREPS-UK is a probabilistic forecast model generating 3 perturbations per hour of the forecast based on slightly different starting conditions. We recommend you take all 18 forecasts variations over a six hour period for maximum accuracy so data volumes can be high.

    Domain

    UK model - full geographical domain - no regional subsetting

    Resolution

    Approx. 0.018 degrees (2km)

    Projection

    Lambert Azimuthal Equal Area (Standard grid)

    Parameters

    Pick and choose from available model parameters across:

    • Single level (surface, atmosphere and specific level)
    • Pressure levels from 1000hPa to 20hPa (33 levels available)
    • Height levels from 5m to 6000m (34 levels available)
    • Depth levels from 0.05m to 2m (4 levels available)

    Time steps

    Available time steps (from model run time)

    • Every hour from 0 to 126 hours

    Model runs

    Every hour

    Delivery

    API

    Format

    GRIB2 - Gridded Binary Format

Our Atmospheric models require steps that involve selecting your region of interest, parameters, file delivery preferences, and more, to build your order. For more information on how to build your order, please visit our 'How to build your order' page.

What is an order?

An order is how you define the data you would like to retrieve from our system. You can select one of our Atmospheric models (see details of our models above), add parameters, time steps and model runs, and give your order a unique name. Our system uses the information stored to provide you with a retrieval URL for each file.

Need support?

If you have any questions, please consult our frequently asked questions (FAQs) on our support page or contact us directly at enquiries@metoffice.gov.uk.

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