WOCE-Argo Global Hydrographic Climatology (WAGHC Version 1.0)

The WOCE/ARGO Global Hydrographic Climatology (WAGHC) is concieved as the update of the previous WOCE Global Hydrographic Climatology (WGHC) (Gouretski and Koltermann, 2004).

The following improvements have been made compared to the WGHC:

2) finer spatial resolution (0.25 degrees Lat/Lon compared to 0.5 degrees for WGHC);

3) finer vertical resolution (65 compared to 45 WGHC standard levels);

4) monthly temporal resolution compared to the all-data-mean WGHC parameters;

5) narrower overall time period;

6) calculation of the mean year corresponding to the optimally interpolated temperature and salinity values;

7) depth of the upper mixed layer.


Similar to the WGHC the optimal spatial interpolation is performed on the local isopycnal surfaces. This approach diminishes the production of the artificial water masses. In addition to the isopycnally interpolated parameters parameter values interpolated on the isobaric levels are also provided.

The monthly gridded vertical profiles extend to the depth of 1898 m, below only annual mean parameter values are available.

Additionally, there is a dataset and a map available providing indexes for selected regions of the world ocean.

Finally, the comparison with the last update of the NOAA World Ocean Atlas (Locarnini et al, 2013) was done.

Simple

Date (Publication)
2018-02-14
Edition

1
Citation identifier
WAGHC_V1.0
Citation identifier
doi:10.1594/WDCC/WAGHC_V1.0
Principal investigator
  University of Hamburg - Dr. Viktor Gouretski
http://www.cen.uni-hamburg.de/
Author
  University of Hamburg - Dr. Viktor Gouretski
http://www.cen.uni-hamburg.de/
Publisher
  WDC Climate at DKRZ
Point of contact
  University of Hamburg - Remon Sadikni
http://icdc.zmaw.de
Name

NetCDF
Keywords

  • In Situ Ocean-based Platforms
Keywords

  • observational data
Keywords

  • ocean
Use limitation

CC-BY-4.0: Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/

Language

eng; USA
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Begin date
1985-01-01
End date
2016-12-31
Distribution format
  • NetCDF ()

Transfer size
55266
OnLine resource
https://www.wdc-climate.de/ui/entry?acronym=WAGHC_V1.0
Hierarchy level
collection

Completeness commission

Name of measure

n/a
Measure description

None
Attribute description
firstguess_temperature
Descriptor

not filled; unit: degC
Attribute description
ocean_mixed_layer_thickness_defined_by_sigma_t
Descriptor

Ocean Mixed Layer Thickness Defined by Sigma T [CF-Standard Name]; unit: m
Attribute description
ocean_mixed_layer_thickness_defined_by_temperature
Descriptor

[CF-Standard Name]; unit: m
Attribute description
sea_floor_depth_below_sea_surface
Descriptor

[CF-Standard Name]; unit: m
Attribute description
Absolute Median Deviation for Salinity
Descriptor

not filled; unit: 1
Attribute description
relative_interpolation_error
Descriptor

not filled; unit: 1
Attribute description
region_index
Descriptor

not filled; unit: 1
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: degC
Attribute description
Absolute Median Deviation for Temperature
Descriptor

not filled; unit: degC
Attribute description
sea_water_salinity
Descriptor

sea_water_salinity [CF-Standard Name]; unit: 1
Attribute description
firstguess_salinity
Descriptor

not filled; unit: 1
File identifier
wdc-climate.de:3584749 XML
Metadata language

eng; USA
Hierarchy level
collection
Hierarchy level name

WAGHC_V1.0
Date stamp
2017-12-18T09:35:22
Metadata standard name

ISO 19115
Metadata standard version

ISO 19115-2:2009
Point of contact
  University of Hamburg - Dr. Viktor Gouretski
http://www.cen.uni-hamburg.de/
Point of contact
  University of Hamburg - Remon Sadikni
http://icdc.zmaw.de
 
 

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