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Download Antarctic Oscillation data

Source: R/download-aao.R
download_aao.Rd

Projection of the monthly 700 hPa anomaly height field south of 20°S on the first EOF obtained from the monthly 700 hPa height anomaly.

Usage

download_aao(use_cache = FALSE, file = NULL)

Arguments

use_cache

logical option to save and load from cache. If `TRUE`, results will be cached in memory if `file` is `NULL` or on disk if `file` is not `NULL`.

file

optional character with the full path of a file to save the data. If `cache` is `FALSE` but `file` is not `NULL`, the results will be downloaded from the internet and saved on disk.

Value

  • Date: Date object that uses the first of the month as a placeholder. Date formatted as date on the first of the month because R only supports one partial of date time

  • Month: Month of record

  • Year: Year of record

  • AAO: Antarctic Oscillation

References

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

Examples

if (FALSE) {
aao <- download_aao()
}