Fladenground Experiment

A data set which has been used throughout the last 20 years as a calibration for mixing parameterisations has been collected during the measurements of the Fladenground Experiment 1976 (FLEX'76) campaign. These measurements of meteorological forcing and potential temperature profiles were carried out in spring 1976 in the northern North Sea at a water depth of about 145 m and a geographical position at 58$ ^{\circ}$55'N and 0$ ^{\circ}$32'E. The simulation is run from April 6 to June 7, 1976. The Kondo (1975) bulk formulae have been used for calculating the surface fluxes. For further details concerning the measurements, see Soetje and Huber (1980) and Brockmann et al. (1984). This FLEX'76 data set has been used by several authors in order to test different mixing schemes (see e.g. Friedrich (1983), Frey (1991), Burchard and Baumert (1995), Pohlmann (1997), Burchard and Petersen (1999), Mellor (2001)).

Data files:

momentumflux.dat surface stress components, $ \tau_x$ and $ \tau_y$ in Nm$ ^{-2}$
heatflux.dat solar radiation and outgoing heat flux, $ Q_{in}$ and $ Q_{out}$ in Wm$ ^{-2}$
sst.dat observed SST in $ ^{\circ}$C
pressure.dat time series of surface slopes fitted to the local spring-neap cycle
tprof.dat profiles of measured potential temperature for initial conditions and
  validation, data are reanalysed and low pass filtered
sprof.dat profiles of idealised salinity for initial conditions and relaxation
tprof_ctd CTD-profiles of potential temperature, with some gaps
sprof_ctd CTD-profiles of salinity, with some gaps
extinction.dat extinction coefficients fitted to measurements

Karsten Bolding 2012-01-24