My GeoNetwork catalogue
LOFZY 2005 - Field Experiment on Cyclones over the Norwegian Sea: meteorological measurements of the research aircraft Falcon, 23 autonomous water buoys and radiosoundings at the research vessel Celtic Explorer
The field campaign LOFZY 2005 (LOFoten ZYklonen, engl.: Cyclones) was carried out in the frame of Collaborative Research Centre 512, which deals with low-pressure systems (cyclones) and the climate system of the North Atlantic. Cyclones are of special interest due to their influence on the interaction between atmosphere and ocean.
Cyclone activity in the northern part of the Atlantic Ocean is notably high and is of particular importance for the entire Atlantic Ocean. An area of maximum precipitation exists in front of the Norwegian Lofoten islands. One aim of the LOFZY field campaign was to clarify the role cyclones play in the interaction of ocean and atmosphere.
In order to obtain a comprehensive dataset of cyclone activity and ocean-atmosphere interaction a field experiment was carried out in the Lofoten region during March and April 2005. Employed platforms were the Irish research vessel RV Celtic Explorer which conducted a meteorological (radiosondes, standard parameters, observations) and an oceanographic (CTD) program. The German research aircraft Falcon accomplished eight flight missions (between 4-21 March) to observe synoptic conditions with high spatial and temporal resolution. In addition 23 autonomous marine buoys were deployed in advance of the campaign in the observed area to measure drift, air-temperature and -pressure and water-temperature.
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 Celtic Explorer
Simple
- Date (Publication)
- 2012-03-26
- Edition
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1
- Citation identifier
- UNI_HH_MI_LOFZY2005
- Citation identifier
- doi:10.1594/WDCC/UNI_HH_MI_LOFZY2005
http://www.mi.uni-hamburg.de/
- Name
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tar-File(s)
- Keywords
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SFB 512
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- Keywords
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aircraft
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- Keywords
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aircraft measurement
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- Keywords
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buoy
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- Keywords
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observational data
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- Keywords
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ocean
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- Keywords
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radiosonde
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- Keywords
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ship
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- Use limitation
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scientific use: For scientific use only
- Language
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eng; USA
))
- Begin date
- 2005-02-22
- End date
- 2005-03-24
- Distribution format
-
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tar-File(s)
()
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tar-File(s)
()
- Transfer size
- 210
- OnLine resource
- https://www.wdc-climate.de/ui/entry?acronym=UNI_HH_MI_LOFZY2005
- Hierarchy level
- collection
Completeness commission
- Name of measure
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n/a
- Measure description
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None
Non quantitative attribute accuracy
- Name of measure
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n/a
- Measure description
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None
- Attribute description
- air_temperature
- Descriptor
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Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: not filled
- Attribute description
- wind_from_direction
- Descriptor
-
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
- Attribute description
- eastward_wind
- Descriptor
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"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
- Attribute description
- air_pressure_at_sea_level
- Descriptor
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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
- Attribute description
- air_temperature
- Descriptor
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Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: not filled
- Attribute description
- northward_wind
- Descriptor
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"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
- Attribute description
- air_pressure_at_sea_level
- Descriptor
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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
- Attribute description
- downwelling_longwave_flux_in_air
- Descriptor
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downwelling_longwave_flux_in_air [CF-Standard Name]; unit: W m-2
- Attribute description
- specific_humidity
- Descriptor
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"specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: g kg-1
- Attribute description
- height
- Descriptor
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Height is the vertical distance above the surface. [CF-Standard Name]; unit: m
- Attribute description
- relative_humidity
- Descriptor
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relative_humidity [CF-Standard Name]; unit: not filled
- Attribute description
- longitude
- Descriptor
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longitude [CF-Standard Name]; unit: degree_east
- Attribute description
- upward_air_velocity
- Descriptor
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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
- Attribute description
- wind_speed
- Descriptor
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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
- Attribute description
- sea_water_temperature
- Descriptor
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Sea water temperature is the in situ temperature of the sea water. To specify the depth at which the temperature applies use a vertical coordinate variable or scalar coordinate variable. There are standard names for sea_surface_temperature, sea_surface_skin_temperature, sea_surface_subskin_temperature and sea_surface_foundation_temperature which can be used to describe data located at the specified surfaces. For observed data, depending on the period during which the observation was made, the measured in situ temperature was recorded against standard "scales". These historical scales include the International Practical Temperature Scale of 1948 (IPTS-48; 1948-1967), the International Practical Temperature Scale of 1968 (IPTS-68, Barber, 1969; 1968-1989) and the International Temperature Scale of 1990 (ITS-90, Saunders 1990; 1990 onwards). Conversion of data between these scales follows t68 = t48 - (4.4 x 10e-6) * t48(100 - t - 48); t90 = 0.99976 * t68. Observations made prior to 1948 (IPTS-48) have not been documented and therefore a conversion cannot be certain. Differences between t90 and t68 can be up to 0.01 at temperatures of 40 C and above; differences of 0.002-0.007 occur across the standard range of ocean temperatures (-10 - 30 C). The International Equation of State of Seawater 1980 (EOS-80, UNESCO, 1981) and the Practical Salinity Scale (PSS-78) were both based on IPTS-68, while the Thermodynamic Equation of Seawater 2010 (TEOS-10) is based on ITS-90. References: Barber, 1969, doi: 10.1088/0026-1394/5/2/001; UNESCO, 1981; Saunders, 1990, WOCE Newsletter, 10, September 1990. [CF-Standard Name]; unit: not filled
- Attribute description
- air_pressure
- Descriptor
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air_pressure [CF-Standard Name]; unit: hPa
- Attribute description
- upward_sensible_heat_flux_in_air
- Descriptor
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"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
- Attribute description
- upward_latent_heat_flux_in_air
- Descriptor
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"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
- Attribute description
- surface_temperature
- Descriptor
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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
- Attribute description
- height
- Descriptor
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Height is the vertical distance above the surface. [CF-Standard Name]; unit: m
- Attribute description
- longitude
- Descriptor
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longitude [CF-Standard Name]; unit: degree_east
- Attribute description
- air_temperature
- Descriptor
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Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: not filled
- Attribute description
- time
- Descriptor
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time [CF-Standard Name]; unit: s
- Attribute description
- wind_speed
- Descriptor
-
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
- Attribute description
- upwelling_shortwave_flux_in_air
- Descriptor
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"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
- Attribute description
- wind_from_direction
- Descriptor
-
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
- Attribute description
- humidity_mixing_ratio
- Descriptor
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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
- Attribute description
- downwelling_shortwave_flux_in_air
- Descriptor
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downwelling_shortwave_flux_in_air [CF-Standard Name]; unit: W m-2
- Attribute description
- dew_point_temperature
- Descriptor
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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
- Attribute description
- latitude
- Descriptor
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latitude [CF-Standard Name]; unit: degree_north
- Attribute description
- upwelling_longwave_flux_in_air
- Descriptor
-
"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
- Attribute description
- time
- Descriptor
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time [CF-Standard Name]; unit: s
- Attribute description
- latitude
- Descriptor
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latitude [CF-Standard Name]; unit: degree_north
- File identifier
- wdc-climate.de:2250993 XML
- Metadata language
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eng; USA
- Hierarchy level
- collection
- Hierarchy level name
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UNI_HH_MI_LOFZY2005
- Date stamp
- 2011-06-22T14:52:25
- Metadata standard name
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ISO 19115
- Metadata standard version
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ISO 19115-2:2009
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