We followed the method of Häkkinen and Rhines (2004) to calculate the Sub-Polar Gyre Index, which has been defined as the first Principal Component (PC1) of an Empirical Orthogonal Function Analysis (EOFA) of the sea level anomaly field in the North Atlantic.
Please note that new versions of the Sub-Polar Gyre Index will be added. Please include the resource version number in citation, and use the most recent version.
Data and Resources
Dataset InfoThese fields are compatible with DCAT, an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web.
|Spatial / Geographical Coverage Area|
POLYGON ((-66.139454841614 42.914599606213, -66.139454841614 73.203347949359, 14.080073833466 73.203347949359, 14.080073833466 42.914599606213))
Friday, January 1, 1993 - 00:00 to Saturday, April 30, 2016 - 00:00
UK Open Government Licence (OGL)
Based on AVISO Sea Surface Height Maps in the North Atlantic. Column headers Year: year of observation Month: month of observation SPG-I Monthly: sub-polar gyre index (dimensionless) at monthly resolution SPG-I Annual Filter: annual sub-polar gyre index (dimensionless) after 13 month running mean filter Fill value: NaN (Not a Number)
Marine Scotland Science
|Public Access Level|