Eddy covariance (EC) measurements of Sensible Heat fluxes and associated measurands, at W16 (grazed grassland), Sheepdrove Organic Farm (Warren Farm PL21), Lambourn, W. Berkshire. See Map View Service for location of these sites.
The study presented here, part of the UK LOwland CAtchment Research programme (LOCAR), extends scintillometry to the complex undulating terrain of chalk downland that has the steeply varying topography with mixed vegetation types that is typical of many parts of southern England. These are the first experimental results comparing the LAS-derived heat fluxes with EC measurements over such complex terrain. Sensible (H) and latent heat (LE) fluxes were measured at four EC stations over contrasting vegetation types, within the source area of a 2.4 km long LAS path. The LAS operated with an effective height of 32 m above the land surface, with a source area of the order of 1 km^2, and thus provides greatly upscaled flux measurements, comparable to the scale of land-atmosphere gridded models and satellite remote sensing.
Keywords: Evaporation, Eddy covariance, Latent Heat Flux, Sensible Heat Flux, Scintillometry, Net Radiation. Catchment: Lambourn
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