HAPEX-MOBILHY: results from the special observing period

The HAPEX-DBILHY program is studying the hydrological budget arid evapotranspiration (ET) flux at the scale of the GG4 grid square i.e. 1O4km2. For the program several surface and subsurface networks operated from mid 1985 to early 1987 to monitor soil moisture, surface energy budget, and surface meteorological parameters. During the Special Observing Period (SOP) from 7 May to 15 July 1986, there were additional measurements including detailed observations of atmospheric fluxes at the surface and with two well instrumented aircraft: the NCPR King-Air for eddy correlation flux measurements and the NTSA C-l30 for remote sensing observations. Brief descriptions of measurement systems and some results from the SOP will be presented here concentrating on the remote sensing of surface tetrerature.