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wdc-climate.de:2250972 eng; USA collection UNI_HH_MI_ACSYS2003 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 2011-06-22T14:50:40 ISO 19115 ISO 19115-2:2009 ACSYS 2003 - Arctic Atmospheric Boundary Layer and Sea Ice Interaction Study north of Spitsbergen: meteorological measurements of the research aircraft Falcon, 11 autonomous ice buoys and radiosoundings at the research vessels Aranda and Polarstern 2012-03-26 publication 1 UNI_HH_MI_ACSYS2003 doi:10.1594/WDCC/UNI_HH_MI_ACSYS2003 Jouko Launiainen Finnish Institute of Marine Research www.fimr.fi/en_GB/ Email: jouko.launiainen@fimr.fi principalInvestigator Dr. Gerd Müller University of Hamburg http://www.mi.uni-hamburg.de/ Email: gerd.mueller@zmaw.de originator Prof. Dr. Burghard Brümmer University of Hamburg http://www.mi.uni-hamburg.de/ Email: burghard.bruemmer@zmaw.de author Jouko Launiainen Finnish Institute of Marine Research www.fimr.fi/en_GB/ Email: jouko.launiainen@fimr.fi author Dr. Gerd Müller University of Hamburg http://www.mi.uni-hamburg.de/ Email: gerd.mueller@zmaw.de author Dr. Amelie Kirchgaessner University of Hamburg http://www.mi.uni-hamburg.de/ Email: amelie.kirchgaessner@polarnetwork.org 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 From 26 March to 22 April 2003, Germany and Finland carried out a joint expedition (ABSIS - Arctic Atmospheric Boundary Layer and Sea Ice Interaction Study) to test and improve the description of the ocean-ice-atmosphere interaction processes. ABSIS was part of the German ACSYS (Arctic Climate System Study) contribution supported by the Ministry of Education and Research and was connected with the RV Polarstern Winter Arctic Polynia Study expedition. The main objectives of ABSIS were to collect data sets to quantify and study: (a) the thermodynamic and dynamic interaction processes at the ice-atmosphere interface and (b) the vertical structure of the atmospheric boundary layer, particularly the Arctic inversion. The latter is a nearly permanent feature over the sea ice. The Arctic inversion is particularly low and strong in winter and effects the exchange between the boundary layer and the free atmosphere as well as the interaction processes at the ice surface. To achieve the above-mentioned objectives various platforms were applied and placed within a 200 km2 area north of Spitsbergen during the expedition period 26 March to 22 April 2003: RV Polarstern and RV Aranda, a research aircraft (Falcon-20 of the German Aerospace Center), 11 automatic ice buoys, and one ice camp station close to RV Polarstern (8-18 April 2003 only). In addition to the published datasets several other measurements were performed during the experiment. Corresonding datasets will be published in the near future and are available on request. Details about all used platforms and sensors and all performed measurements are listed in the fieldreport. The following datasets are available on request: ground data at RV Aranda, ground data at RV Polarstern, ice station near RV Polarstern Dr. Gerd Müller University of Hamburg http://www.mi.uni-hamburg.de/ pointOfContact tar-File(s) aircraft aircraft measurement arctic buoy ice ice drift observational data radiosonde sea ice ship scientific use: For scientific use only eng; USA -20.0 10.0 76.0 83.0 calendrical 2003-03-27 2003-07-31 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 latitude latitude [CF-Standard Name]; unit: degree_north northward_wind "Northward" indicates a vector component which is positive when directed northward (negative southward). 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.) [CF-Standard Name]; unit: m s-1 upward_sensible_heat_flux_in_air "Upward" indicates a vector component which is positive when directed upward (negative downward). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Guidelines for construction] [CF-Standard Name]; unit: W m-2 time time [CF-Standard Name]; unit: s time time [CF-Standard Name]; unit: s 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-2 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: not filled height Height is the vertical distance above the surface. [CF-Standard Name]; unit: m 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 latitude latitude [CF-Standard Name]; unit: degree_north 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 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_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: hPa upward_latent_heat_flux_in_air "Upward" indicates a vector component which is positive when directed upward (negative downward). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Guidelines for construction] [CF-Standard Name]; unit: W m-2 latitude latitude [CF-Standard Name]; unit: degree_north surface_temperature The surface called "surface" means the lower boundary of the atmosphere. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below. [CF-Standard Name]; unit: not filled 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 sea_ice_temperature sea_ice_temperature [CF-Standard Name]; unit: not filled longitude longitude [CF-Standard Name]; unit: degree_east relative_humidity relative_humidity [CF-Standard Name]; unit: not filled relative_humidity relative_humidity [CF-Standard Name]; unit: not filled height Height is the vertical distance above the surface. [CF-Standard Name]; unit: m downwelling_longwave_flux_in_air downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2 upwelling_shortwave_flux_in_air "shortwave" means shortwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 time time [CF-Standard Name]; unit: s longitude longitude [CF-Standard Name]; unit: degree_east air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: hPa upwelling_longwave_flux_in_air "longwave" means longwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: W m-2 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: not filled air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: not filled humidity_mixing_ratio Humidity mixing ratio of a parcel of moist air is the ratio of the mass of water vapor to the mass of dry air. [CF-Standard Name]; unit: g kg-1 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: not filled air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: hPa 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 downwelling_shortwave_flux_in_air downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2 upward_air_velocity vertical wind velocity A velocity is a vector quantity. "Upward" indicates a vector component which is positive when directed upward (negative downward). Upward air velocity is the vertical component of the 3D air velocity vector. [CF-Standard Name]; unit: m s-1 air_pressure air_pressure [CF-Standard Name]; unit: hPa longitude longitude [CF-Standard Name]; unit: degree_east eastward_wind "Eastward" indicates a vector component which is positive when directed eastward (negative westward). 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.) [CF-Standard Name]; unit: m s-1 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 tar-File(s) 59 https://www.wdc-climate.de/ui/entry?acronym=UNI_HH_MI_ACSYS2003 information collection n/a None n/a None