The North Atlantic THORPEX Observing System Test (Atlantic-TOST) was a European, North American and Canadian joint observation targeting project, which tested the hypothesis that the number and size of significant weather forecast errors over Europe and eastern seaboard of the USA could be reduced by targeting extra observations over oceanic storm tracks and other remote areas, determined each day from the forecast flow patterns.
More about Atlantic-TOST observation targeting

In this section you will find information on the radiosonde network operated by participating members of EUMETNET.
More about EUMETNET radiosondes

GEO promotes the development of a comprehensive, co-ordinated, and sustained Earth observation system, among governments and international organisations, to significantly advance our collective ability to understand and address global environmental and economic challenges. Its aim is to develop a framework and implementation plan for building systems. The Met Office is active in several of the groups.
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AMDAR (Aircraft Meteorological Data Reporting) systems are carried on board aircraft and automatically measure various atmospheric parameters which are sent to data receiving centres and eventually are used in numerical weather prediction models.
More about the AMDAR programme

Argo will be a global array of 3,000 free-drifting profiling floats to measure the temperature and salinity of the upper 2,000 m of the ocean. Argo data are used in operational ocean models, coupled seasonal forecasting models and will help in detecting climate change in the oceans.
More about the Argo programme

GCOS is intended to be a long-term, user-driven operational system capable of providing the comprehensive observations required for monitoring the climate system, for detecting and attributing climate change, for assessing the impacts of climate variability and change, and for supporting research toward improved understanding, modelling and prediction of the climate system. It addresses the total climate system including physical, chemical and biological properties, and atmospheric, oceanic, hydrologic, cryospheric and terrestrial processes.
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The UK Regional Specialised Met. Centre (RSMC) is operated from the Met Office headquarters in Exeter. RSMC Exeter and RSMC Toulouse have joint responsibility for Environmental Emergency Response requirements in World Meteorological Organization (WMO) regions VI and I which covers Africa and Europe. RSMCs exist to provide advice in the event of a nuclear accident.
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A group of European national meteorological services with the aim of closer collaboration in the development of techniques for short-range weather prediction.
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An international project using wind profilers across Europe.
More about CWINDE

EuroSPICE and SOLICE are both projects concerned with how changes in the climate and environment may affect processes in the stratosphere.
More about EuroSPICE and SOLICE

The GRAS Meteorology SAF is a EUMETSAT-funded project that develops an operational radio occultation system responsible for delivering temperature, pressure, and humidity profiles in real time, software products for numerical weather prediction models and for carrying out related research. The project is hosted by the Danish Meteorological Institute.
More about the GRAS SAF

The NWP SAF is a EUMETSAT-funded project that exists to co-ordinate research and development efforts among the SAF partners to improve the interface between satellite data and NWP for the benefit of EUMETSAT member states.
More about the NWP SAF

The Stochastic Precipitation Nowcast Programme (SPNP) was established at the Joint Centre for Hydro-Meteorological Research in July 2001. The primary aim of the Programme is to oversee research and development projects whose purpose is to improve the quality, reliability and timeliness of operational precipitation nowcasts and early warnings of extreme precipitation events.
More about the SPNP (participating members only)

The MAXWAVE research project is funded by the European Community Fifth Framework Programme contributing to the implementation of Key Action 3: Sustainable Marine Ecosystems within Energy, Environment and Sustainable Development.
More about MAXWAVE

PRISM is a research project supported by the European Commission under the Fifth Framework Programme. The project goals include the development of a set of portable climate community models and associated diagnostic software under standardised coding conventions.
More about PRISM

The Met Office participates in several EU Framework Programmes which have led to advances in the science of meteorology, and the development of numerical weather prediction and climate simulation modelling. The Met Office is a partner in 12 successful FP6 projects. Some are research and development projects focusing on improving scientific understanding in climatology, oceanography and aviation safety.

Others are:

The Global Ocean Data Assimilation Experiment (GODAE) High Resolution SST Pilot Project will provide a new generation of sea surface temperature data products by merging complementary satellite and in situ SST observations in near real time. The Met Office, through the National Centre for Ocean Forecasting (NCOF), is a full partner within GODAE. The GHRSST-PP International Project Office is hosted by the Hadley Centre and jointly sponsored by the European Space Agency (ESA).
More about the GHRSST-PP

The WMO RA-VI network performance statistics are based on EUCOS performance criteria and monitor data received at the Met Office for each WMO RA-VI observing system, using the Met Office Global Model background field.

These pages are updated daily at 1000 UTC and are available for download as csv files.
More about WMO RA-VI Network performance statistics

The EUCOS Composite Observing System (EUCOS) aims to establish and operate a truly European observing network under the auspices of the European Meteorological Network (EUMETNET), to deliver increased efficiency leading to better-quality numerical and general forecasts, initially on a European scale.
More about EUMETNET Composite Observing System (EUCOS)