download_mei {rsoi} | R Documentation |
Download Multivariate ENSO Index Version 2 (MEI.v2)
Description
MEI.v2 is based on EOF analysis of level pressure, sea surface temperature, surface zonal winds, surface meridional winds, and Outgoing Longwave Radiation. The analysis is conducted for 12 partially overlapping 2-month "seasons".
Warm phase is defined as MEI index greater or equal to 0.5. Cold phase is defined as MEI index lesser or equal to -0.5.
Usage
download_mei(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: Bi-moonthly season of record
Year: Year of record
MEI: Multivariate ENSO Index Version 2
Phase: ENSO phase
References
https://psl.noaa.gov/enso/mei/
Examples
## Not run:
mei <- download_mei()
## End(Not run)