• Arctic SDI catalogue
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Drifter Climatology of Near-Surface Currents

Satellite-tracked SVP drifting buoys (Sybrandy and Niiler, 1991; Niiler, 2001) provide observations of near-surface circulation at unprecedented resolution. In September 2005, the Global Drifter Array became the first fully realized component of the Global Ocean Observing System when it reached an array size of 1250 drifters. A drifter is composed of a surface float which includes a transmitter to relay data, a thermometer which reads temperature a few centimeters below the air/sea interface, and a submergence sensor used to detect when/if the drogue is lost. The surface float is tethered to a subsurface float which minimizes rectification of surface wave motion (Niiler et al., 1987; Niiler et al., 1995). This in turn is tethered to a holey sock drogue, centered at 15 m depth. The drifter follows the flow integrated over the drogue depth, although some slip with respect to this motion is associated with direct wind forcing (Niiler and Paduan, 1995). This slip is greatly enhanced in drifters which have lost their drogues (Pazan and Niiler, 2000). Drifter velocities are derived from finite differencing their raw position fixes. These velocities, and the concurrent SST measurements, are archived at <a href="http://www.aoml.noaa.gov/phod/dac/dacdata.php" target="_blank">AOML's Drifting Buoy Data Assembly Center</a> where the data are quality controlled and interpolated to 1/4-day intervals (Hansen and Herman, 1989; Hansen and Poulain, 1996).

Reference:

Lumpkin, R. and Z. Garraffo, 2005: Evaluating the Decomposition of Tropical Atlantic Drifter Observations. J. Atmos. Oceanic Techn. I 22, 1403-1415.

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Date ( Revision )
2016-01-27
Edition
http://localhost:8080/demodem/editioin
Status
Completed
Point of contact
  NOAA AOML - ( )
Maintenance and update frequency
As needed
Keywords ( Theme )
  • marine
  • abiotic
Keywords ( Place )
  • remote sensing
Access constraints
Copyright
Use constraints
otherRestictions
Spatial representation type
Vector
Metadata language
en
Character set
UTF8
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Reference system identifier
WGS 1984
OnLine resource
Figure 1.31-1 Drifter-Derived Climatology of Near-Surface Currents.tif ( WWW:DOWNLOAD-1.0-http--download )

Image

OnLine resource
drifter_annual_means_lumpkin.zip ( WWW:DOWNLOAD-1.0-http--download )

Shapefile

OnLine resource
drifter_annual_means_lumpkin ( OGC:WMS-1.3.0-http-get-map )

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Dataset

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Date ( Publication )
Pass
File identifier
51be52cc-444d-4a3e-8ebb-81e169c781b5 XML
Metadata language
en
Character set
UTF8
Date stamp
2023-02-13T14:00:41
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Owner
  CAFF - ( )
 
 

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Keywords

abiotic marine

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