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wdc-climate.de:2250989 eng; USA collection UNI_HH_MI_FRONTEX1989 Christian Wetzel University of Hamburg http://www.mi.uni-hamburg.de/ pointOfContact Dr. Gerd Müller University of Hamburg http://www.mi.uni-hamburg.de/ pointOfContact 2011-06-22T14:52:08 ISO 19115 ISO 19115-2:2009 FRONTEX 1989 - Atmospheric Fronts in the Coastal Area of Northern Germany: radiosoundings at the research vessel Valdivia 2012-03-27 publication 1 UNI_HH_MI_FRONTEX1989 doi:10.1594/WDCC/UNI_HH_MI_FRONTEX1989 Dr. Gerd Müller University of Hamburg http://www.mi.uni-hamburg.de/ Email: gerd.mueller@zmaw.de originator Prof. Dr. Helmut Jeske University of Hamburg http://www.mi.uni-hamburg.de/ Email: jeske@dkrz.de author Prof. Dr. Burghard Brümmer University of Hamburg http://www.mi.uni-hamburg.de/ Email: burghard.bruemmer@zmaw.de author Christian Wetzel University of Hamburg http://www.mi.uni-hamburg.de/ Email: christian.wetzel@zmaw.de author Prof. Dr. Burghard Brümmer University of Hamburg http://www.mi.uni-hamburg.de/ Email: burghard.bruemmer@zmaw.de principalInvestigator WDC Climate at DKRZ publisher The field experiment FRONTEX 1989 (FRONT EXperiment) took place in the German coastal area of the North Sea between 2 May and 6 June 1989. It was coordinated by the Meteorological Institute of the University of Hamburg and was primarily funded by the German Research Foundation (DFG) in the frame of the priority programme "Fronten und Orographie". The scientific aim was the investigation of cold fronts moving in from the North Sea and reaching the coastal area. The different physical properties of sea and land surface (roughness, humidity, temperature, heat conduction and heat capacity) modify the frontal structure at landfall. The modification should first alter the boundary layer and is then communicated to higher levels, thus effects like convection and convergence will be found farther inland. The experimental concept was to monitor the passing front on all relevant temporal and spatial scales. To obtain this goal a large variety of measurement platforms was employed. Ground based remote sensing and in-situ measurements were performed at Heligoland, Schleswig, Hanover, Emden, Berlin, and on board the research vessel. Three research aircraft (POLAR-2 and POLAR-4 of AWI Bremerhaven and DO-128 of TU Braunschweig) were used to measure the frontal structure with high temporal and spatial resolution. Dr. Gerd Müller University of Hamburg http://www.mi.uni-hamburg.de/ pointOfContact tar-File(s) observational data radiosonde ship scientific use: For scientific use only eng; USA 4.0 14.0 52.0 56.0 calendrical 1989-05-02 1989-06-06 relative_humidity relative_humidity [CF-Standard Name]; unit: not filled dew_point_temperature Dew point temperature is the temperature at which a parcel of air reaches saturation upon being cooled at constant pressure and specific humidity. [CF-Standard Name]; unit: not filled wind_speed Speed is the magnitude of velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) The wind speed is the magnitude of the wind velocity.[CF-Standard Name]; unit: m s-1 wind_from_direction Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) In meteorological reports, the direction of the wind vector is usually (but not always) given as the direction from which it is blowing (wind_from_direction) (westerly, northerly, etc.). In other contexts, such as atmospheric modelling, it is often natural to give the direction in the usual manner of vectors as the heading or the direction to which it is blowing (wind_to_direction) (eastward, southward, etc.) "from_direction" is used in the construction X_from_direction and indicates the direction from which the velocity vector of X is coming. [CF-Standard Name]; unit: degree air_pressure air_pressure [CF-Standard Name]; unit: hPa air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: not filled specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: g kg-1 height Height is the vertical distance above the surface. [CF-Standard Name]; unit: m tar-File(s) 1 https://www.wdc-climate.de/ui/entry?acronym=UNI_HH_MI_FRONTEX1989 information collection n/a None n/a None