coastDat-1 HAMSOM baroclinic hydrodynamic hindcast (1948-2007) North Sea

The experiment contains baroclinic hindcast simulations of the North Sea by the hydrodynamic model HAMSOM (Pohlmann, 2006) for the period 1948-2007. HAMSOM was set up at a spatial resolution of 20' x 12' and with 19 vertical levels (5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 75, 100, 150, 200, 250, 350, 600 and 1000m, lower boundary level). The data-set contains hourly output of temperature, salinity, u- and v-component (3-dim) and water level (2-dim).

At the open boundaries, lateral boundary conditions are obtained from a coarser, large-scale Northwest-European shelf sea model driven by climatological temperature and salinity obtained from Levitus (1982). For water levels, in addition the eight significant tidal constituents (M2, S2, N2, K2, K1, O1, Q1 and P1) are included and weather effects are accounted for by using wind and pressure fields from the NCEP/NCAR Reanalysis 1 (Kalnay et al., 1996). Due to technical reasons at the lateral boundaries the water level was added by 0.5m.

Atmospheric forcing was obtained from NCEP/NCAR Reanalysis 1 data-set comprising near-surface air-temperature, humidity, cloud cover, precipitation, sea level pressure and near surface wind speed and direction. The output format is netCDF.

Date (Publication): 2012-06-28

Edition: 1

Citation identifier: coastDat-1_HAMSOM

Citation identifier: doi:10.1594/WDCC/coastDat-1_HAMSOM

Originator

Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH - Dr. Elke Meyer
not filled

Author

Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH - Dr. Elke Meyer
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Author

Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH - Dr. Ralf Weisse
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Publisher

WDC Climate at DKRZ

Point of contact

Helmholtz-Zentrum Hereon - Dr. Elke Meyer
www.hereon.de

Name: NetCDF

Keywords

HAMSOM

Keywords

coastdat

Keywords

model data

Keywords

regional modelling

Use limitation: scientific use: For scientific use only

Language: eng; USA

Begin date: 1948-01-01

End date: 2007-12-31

Distribution format

NetCDF ()

Transfer size: 610728

OnLine resource: https://www.wdc-climate.de/ui/entry?acronym=coastDat-1_HAMSOM

Hierarchy level: collection

Non quantitative attribute accuracy

Name of measure: n/a

Measure description: None

Attribute description: sea_surface_height_above_sea_level

Descriptor: sea_surface_height_above_sea_level [CF-Standard Name]; unit: m

Attribute description: longitude

Descriptor: longitude [CF-Standard Name]; unit: degrees_east

Attribute description: time

Descriptor: time [CF-Standard Name]; unit: hours since 1900-01-01 00:00

Attribute description: sea_water_temperature

Descriptor: 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: K

Attribute description: sea_water_salinity

Descriptor: sea_water_salinity [CF-Standard Name]; unit: not filled

Attribute description: level height

Descriptor: not filled; unit: m

Attribute description: latitude

Descriptor: latitude [CF-Standard Name]; unit: degrees_north

Attribute description: eastward_sea_water_velocity

Descriptor: A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward) [CF-Standard Name].; unit: m s-1

Attribute description: northward_sea_water_velocity

Descriptor: A velocity is a vector quantity. "Northward" indicates a vector component which is positive when directed northward (negative southward). [CF-Standard Name]; unit: m s-1