indexNino34

An analysis task for plotting both time series and spectra of the El Niño 3.4 Climate Index against observations.

Component and Tags:

component: ocean
tags: timeSeries, index, nino, publicObs

Configuration Options

The following configuration options are available for this task:

[indexNino34]
## options related to plotting time series of the El Nino 3.4 index

# Specified region for the Nino Index,'nino3', 'nino4', or 'nino3.4'
# The indexNino34 routine only accepts one value at a time
region = nino3.4

# Data source to read for comparison.  There are two options
# 1 - ERS SSTv4 -- Extended Reconstructed Sea Surface Temperature -- 1854 - 2016
# 2 - HADIsst -- Hadley Center analysis -- 1870 - 2016
observationData = HADIsst

While the default is the El Niño 3.4 region, you may select among nino3, nino4, and nino3.4. See Regions for more information about regions in MPAS-Analyis.

Note

A bug in indexNino34 means that plot titles and other output will indicate that El Niño 3.4 was plotted regarless of which of the three El Niño regions was actually selected.

By default, observations are taken from the Hadley Center analysis. To use the Extended Reconstructed Sea Surface Temperature (ERS SSTv4), set observationData = ERS SSTv4.

Observations

• HadISST Nino 3.4 Index
• ERS SSTv4 Nino 3.4 Index

Example Result