The European Infrastructure Network InGOS (Integrated non-CO2 Greenhouse gas Observing System) aims to optimise and standardise flux measurement systems for non-CO2 greenhouse gases. To support this activity, the Centre for Ecology and Hydrology (CEH) in Edinburgh (UK) is hosting a major intercomparison campaign for the measurement of micrometeorological fluxes of N2O on a managed grassland for the period 3rd to 28th June 2013.


To verify a variety of N2O flux measurement setups using eddy covariance, REA or gradient method on the same field, for a duration of 4 weeks. All instruments will be running in parallel for the first few days measuring background conditions, and continue for a three week period following the fertilisation event.  All system will be calibrated together with the same gas standards. There will be the opportunity to interface various analysers with a common anemometer / data acquisition system or to test independent complete systems against a reference. Data analysis will be performed individually with own methodology and in parallel following a common protocol.

The Easter Bush grazed grassland is split into north and South fields. Both fields are suitable for eddy covariance measurements; the prevailing wind direction is southwesterly and therefore most measurements are made over the south field. White dots are static chambers.     Measurement setup inbetween the north and south fields

Field Site

The Easter Bush measurement site is located in a rural area 10 km south of Edinburgh, Scotland UK (3012’W, 55o52’N, 190 m a.s.l.). The site is situated on the border between two intensively-managed grassland fields of approximately 5 ha each. A full meteorological station is installed at the field site providing data for wind speed and direction, air humidity, solar radiation, soil T and moisture, atmospheric pressure, PAR, rainfall etc. The organic rich soil has consistently resulted in high N2O emission factors from fertiliser application in previous studies (Di Marco et al., 2004; Flechard et al., 2009; Jones et al., 2012).


We will be providing mains power, equipment enclosures and ultrasonic anemometer, as well as a joint data logging system and broadband connection in the field. Desk space and WIFI connection will be available at the CEH Institute, a 5 minute walk from the site.


Please register interest in participating in the campaign with Eiko Nemitz and Daniela Famulari (; +44 131 4458523). Transnational access (TNA) funds to cover travel, subsistence and shipment costs can be applied for by eligible parties via the InGOS website (see ) after discussion with the organisers.

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