Mean vertical sections of zonal currents in the Tropical Pacific
Mean subthermocline and intermediate zonal currents meridional sections are produced at several longitudes across the Tropical Pacific, from 18°S to 18°N and 0 to 2000m depth. They are based on a compilation of shipboard ADCP measurements, and absolute geostrophic velocities constructed from a high-resolution 0–2000-m Argo climatology referenced to a 1000-m velocity field derived from Argo float drifts.
Description
1) SADCP data obtained from ships transiting in the low-latitude tropical Pacific, during 1999–2015 (see Cravatte et al., 2017, 190 cruises) are compiled. Most of the data (128 cruises) were provided by the Joint Archive for Shipboard ADCP (JASADCP) at the University of Hawaii, with a large fraction from the NOAA ship Ka’imimoana, servicing the TAO array of moored buoys.
All data retrieved from the JASADCP center were from their ‘‘standard subset’’ containing hourly averages interpolated to a 10-m vertical grid. For the other datasets, SADCP data were provided as 5- to 15-min temporal averages with 5- to 24-m vertical resolution. They were then averaged and interpolated to the 1-h, 10-m vertical grid. The complete dataset was mapped on a 0.25° latitude by 1° longitude grid using a simple Gaussian weighting function with 0.25° latitude and 3° longitude decorrelation scales, independent of the timing of the measurements, with windows of 0.5° of latitude and 6° of longitude.
2) The mean Argo temperature and salinity gridded climatology with a 1/6° resolution (Roemmich and Gilson 2009 was used to compute dynamic height anomalies. Derived zonal geostrophic shear both on and off the equator were computed following the method presented by Picaut and Tournier (1991) using a 1000-m reference level. The 1000-m Argo float drift then provided the constant of integration for vertically integrating the geostrophic shear to obtain a field of mean absolute geostrophic velocity.
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Citation proposal
Sophie Cravatte (LEGOS, Université de Toulouse, FranceIRD, France) - Elodie Kestenare () (2018) . Mean vertical sections of zonal currents in the Tropical Pacific. https://services.mspdata.eu:/geonetwork/srv/api/records/ee0df940-a26b-4e74-360b-3e7da111a151 |
Simple
- Date ( Publication )
- 2018-01-01
- Identifier
- http://dx.doi.org/ / 10.6096/12
- Credit
- LEGOS, Project LEFE/INSU ZEBRE
- Status
- Completed Completed
Author
contributor
contributor
contributor
- GEMET - INSPIRE themes, version 1.0 ( Theme )
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- Oceanographic geographical features
- Centre de données ODATIS ( Theme )
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- CDS-IS-OMP
- Thèmatiques ODATIS ( Theme )
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- Scientific cruises
- Variables ODATIS ( Theme )
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- /Physical Oceanography/Currents
- Type de jeux de donnée ODATIS ( Theme )
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- /In-situ observations/Networks , In-situ observations/Sea cruises
- Use limitation
- Publications using these data should acknowledge the use of the data by citing the DOI and refering the publication Cravatte et al. (2017) : Cravatte, S., E. Kestenare, F. Marin, P. Dutrieux and E. Firing, Subthermocline and Intermediate Zonal Currents in the Tropical Pacific Ocean: paths and vertical structure, J. Phys. Oceanogr. (2017) 47 (9): 2305–2324., https://doi.org/10.1175/JPO-D-17-0043.1
- Other constraints
- No access conditions apply
- Metadata language
- English
- Topic category
-
- Oceans
))
))
- Reference system identifier
- EPSG:4326
- Distribution format
-
- ASCII ()
- NetCDF (3 )
- OnLine resource
-
Archive.zip
Archive.zip
- OnLine resource
- http://dx.doi.org/10.6096/12
- Hierarchy level
- Dataset Dataset
Conformance result
- Date ( Publication )
- 2018-01-01
- Explanation
- NA
- Pass
- true
- Statement
- Data produced with Project LEFE/INSU ZEBRE
Metadata
- File identifier
- ee0df940-a26b-4e74-360b-3e7da111a151 XML
- Metadata language
- English
- Character set
- UTF-8 UTF8
- Hierarchy level
- Dataset Dataset
- Date stamp
- 2021-12-01T12:00:04.122+01:00