Stations

The UK-ICOS community formally submitted their membership application to ICOS-RI in June 2016. In total, five stations were put forward. Below is a summary of the proposed stations and a synoptic description for each of the observing systems (oceanatmosphere and ecosystem) that constitute the UK-ICOS research infrastructure. For more information about the proposed UK-ICOS stations click on the interactive map below. Alternatively click here for an interactive table with full details of the UK-ICOS stations. Visit the science pages to find out about the UK-ICOS science highlights.

Station Name

Station sector (ocean, atmosphere, terrestrial)

Proposed station status

PAP Sustained Observatory

Ocean

Full

UK – Caribbean VOS line

Ocean

Full

Western Channel Observatory

Ocean

Full

Weybourne

Atmosphere

In discussion

Auchencorth Moss

Terrestrial

Full

 

The Marine Stations

The marine element of the UK observational component of ICOS is designed to capture both the air-sea exchanges and the oceanic sinks of GHGs. The coastal shelf seas around the UK are an important element of the NW European shelf (the latter being the most extensive coastal shelf sea globally). Furthermore, the North Atlantic, across which approximately half of the marine UK-ICOS stations are located is a major sink for anthropogenic CO2.

The marine observational strategy is built on a combination of Eulerian (fixed point) and Lagrangian (moving) stations to capture both the temporal and spatial variability in uptake. In the coastal zone, a long term station in the English Channel operated by PML (Western Channel Observatory) with over 25 years of data allows the ongoing uptake of GHGs by the shelf seas (and the associated impacts such as ocean acidification) to be monitored. In the open ocean the principal observing systems are a combination of fixed-point open ocean observatories such as the Porcupine Abyssal Plain Sustained Observatory, and underway measurement systems collecting data on sea surface pCO2 and air-sea CO2 fluxes. These underway systems are fitted to both merchant vessels (e.g. the UK - Caribbean voluntary observing ships, operational as a science platform since 1995), and research vessels (e.g. the RRS James Clarke Ross, which has operated as the principal vessel for a transect between the UK and Falklands/South America). Together these open ocean observational strategies allows the role of the North Atlantic in the global carbon cycle to be established.

 

The Atmospheric Stations

The atmospheric observing system of the UK component of ICOS is substantially built on the DECC tall tower network. This network is designed to allow the whole GHG budget of the UK to be established along with quantifying the impact of urban landscapes on this budget. The system operates in strong collaboration with a station on the west coast of Ireland at Mace Head and key UK atmospheric stations including Weybourne on the North Norfolk coast and Egham in suburban London. Furthermore the Meteorological Office station on the Channel Island of Jersey provides measurements of background air masses from the southwest, separating the UK from continental European emissions.

The Ecosystem Stations

The ecosystem observing system of the UK component of ICOS is designed to account for the heterogeneity present in UK landscape types and climate, reflecting the key ecosystems within the logistical constraints of having access to mains power. It aims to sample the uptake of carbon by forests, peatlands and grasslands, the major ecotypes with significant impacts on natural and anthropogenic GHG cycling.

Auchencorth Moss is a low-lying caombrotrophic peatland in SE Scotland, which boasts one of the longest CO2 flux time series globally and is unique in quantifying also GHG losses from stream water export. The response of the year-to-year variation in net ecosystem exchange to climate drivers provides important information on the likely impacts of climate change on carbon accumulation in UK peatlands. Through Auchencorth  Moss, a couple of small UK networks (the CEH Carbon Catchment Peatlands and the Defra Lowland Peatlands) will be referenced to ICOS.