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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
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.

Bits per 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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Message

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

Observations

The Met Office's weather observations are key to understanding current atmospheric conditions and form the basis for accurate weather forecasting. They provide the ground truth from which many important products and services are formed, including vital validation of forecasts that enable continuous quality improvement to services delivered.

Specification

  • Land Observations

    Our Land Observations API provides access to recent observational data. The API is ideal for applications that need accurate, hourly data on key weather parameters observed at the land surface.

    Data from ground-based instruments is available from 150 locations, separated on average 50km from each other to provide the greatest representative coverage of the UK. Each of these stations have a scheduled maintenance visit every six months in which every instrument is checked for performance. In addition, sites are inspected every two years to ensure exposure classifications are kept to the internationally aligned standards – this will include identifying any changes to sites from trees or buildings for example.

    All sensors are located within an enclosure and variables are measured according to World Meteorological Organisation (WMO) standards. A full list of available parameters can be found in the Glossary. Measurements are fully automated, with data logged at each station and transmitted centrally for processing. For synoptic purposes in the UK and internationally, standard observing times are hourly, each station reports 24 observations daily at 0000, 0100, 0200, through to 2300 UTC.

    Domain

    150 UK Station Locations

    Parameters

    Our Land Observations API currently provides 9 parameters on an hourly basis. These can be found in our Glossary.

    Timesteps

    0000, 0100, 0200, ... 2200 and 2300 UTC for the past 48 hours.

    Update frequency

    Hourly

    Delivery

    API

    Format

    JSON

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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