Aleutian Low Pressure Index
This index measures the relative intensity of the Aleutian Low pressure system of the north Pacific (December through March). It is calculated as the mean area (km²) with sea level pressure <= 100.5 kPa and expressed as an anomaly from the 1950-1997 mean. A positive index value reflects a relatively strong or intense Aleutian Low. The index was completely regenerated using a new method in 2015. The new method produces Aleutian Low Pressure Index (ALPI) values that are comparable to previously published values (1900-2008), and there is no difference in the periods with positive or negative values. To make use of this index, you are requested to cite the manuscript (below).
Correct citation: Surry, A.M., and King, J.R. 2015. A new method for calculating ALPI: The Aleutian Low Pressure Index. Can. Tech. Rep. Fish. Aquat. Sci. 3135: v + 31 p.
Full document: http://waves-vagues.dfo-mpo.gc.ca/Library/359380.pdf
- Publisher - Current Organization Name: Fisheries and Oceans Canada
- Contributor: Jacquelynne King, Maria Surry
- Licence: Open Government Licence - Canada
Data and Resources
Aleutian Low Pressure Index 1900-2015CSVEnglish dataset CSV
Aleutian Low Pressure Index 1900-2015CSVFrench dataset CSV
Aleutian Low Pressure Index 1900-2015 - GraphicJPGEnglish specification JPG
Canadian Technical Report of Fisheries and Aquatic Sciences 3135 - A New Method for Calculating ALPI: The Aleutian Low Pressure IndexPDFEnglish French website PDF