Data · collection
Near Global Ocean Currents Climatology by Meehl from NCAR
Listed in NASA Earthdata CMR
These monthly climatologies were prepared by G. Meehl and are archived at the National Center for Atmospheric Research (NCAR).
Description
G. Meehl prepared a 5 X 5 degree latitude/longitude dataset of long-period ocean currents speed and direction based on pilot charts covering the world ocean southward to about 50 S. The pilot charts are based on summaries of ship drift data. One of the charts was updated about 1984, after the tape data was prepared.
The digital data is available for January, April, July, and October representing the four seasons. Meehl (1982) decided to use pilot charts in constructing an observed seasonal source of global ocean surface currents. These charts are prepared by the U.S. Naval Oceanographic Office (NAVOCEANO), and among numerous other quantities, arrows on these charts show surface current directions labeled with current speeds in either knots or nautical miles per hour.
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Data for the pilot charts are based on long-term mean current speeds and directions already derived from the NAVOCEANO shipdrift file. A ship drift is the difference between its true position and its predicted position calculated 24 hours earlier by dead reckoning; this difference can be attributed to wind and ocean currents. This data set provides the flexibility needed to produce a source of observed surface currents in a suitable format for use in ocean model and diagnostic studies.
Links
Get the data
- GET DATA rda.ucar.edu/datasets/ds280.0 ↗
download · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214046780-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214046780-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- CURRENT METERS · Ocean Currents · SHIPS · Wind-Driven Circulation
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214046780-SCIOPS | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:current-meters | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-circulation/ocean-currents | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-circulation/wind-driven-circulation | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:ships | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |