rsoi (version 0.4.0)

download_oni: Download Oceanic Nino Index data

Description

The Oceanic Nino Index is average sea surface temperature in the Nino 3.4 region (120W to 170W) averaged over three months. Phases are categorized by Oceanic Nino Index:

• Warm phase of El Nino/ Southern Oscillation when 3-month average sea-surface temperature departure of positive 0.5 degC

• Cool phase of La Nina/ Southern Oscillation when 3-month average sea-surface temperature departure of negative 0.5 degC

• Neutral phase is defined as when the three month temperature average is between +0.5 and -0.5 degC

Usage

download_oni()

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

• ONI: Oneanic Oscillation Index

• ONI_month_window: 3 month period over which the Oneanic Oscillation Index is calculated

• phase: ENSO phase

References

http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/ensostuff/detrend.nino34.ascii.txt

Examples

# NOT RUN {
oni <- download_oni()

# }