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Arctic Oscillation (AO) Index (ea_data)

Source: R/data-documentation.R
ao.Rd

The AO Index tracks the primary mode of atmospheric circulation variability in the Northern Hemisphere, calculated via PCA of 1000 hPa geopotential anomalies north of 20°N.

Usage

data(ao)

Format

An ea_data object:

data

Tibble:

  • year: Year

  • month: Month (1–12)

  • value: AO anomaly (unitless index)

meta

Includes:

  • data_type: "Arctic Oscillation Index"

  • region: "Northern Hemisphere"

  • location_descriptor: "AO PCA"

  • units: ""

  • source_citation: "NOAA CPC"

  • original_value_col: "anomaly"

Source

https://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/

Author

Andrew Edwards