6.5.4. Index Calculation
6.5.4.1. Operation
- Operation name
Index Calculation
- Description
This Operation serves for calculation of (pre-defined) indices involving spatial and temporal averaging, anomalies, standardization, filtering etc.
- Utilised in
6.5.4.2. Options
- name
Niño3.4 index
- description
five month running mean of anomalies of monthly means of SST in Niño3.4 region (120°W-170°W, 5°S- 5°N), see UCAR webpage on El Niño indices
- settings
time series calculation, Boolean El Niño (threshold +0.4 deg C), Boolean La Niña (threshold -0.4 deg C)
6.5.4.3. Input data
- name
longitude (lon, x)
- type
floating point number
- range
[-180.; +180.] respectively [0.; 360.]
- dimensionality
vector
- description
grid information on longitudes
- name
latitude (lat, y)
- type
floating point number
- range
[-90.; +90.]
- dimensionality
vector
- description
grid information on latitudes
- name
height (z)
- type
floating point number
- range
[-infinity; +infinity]
- dimensionality
vector
- description
grid information on height/depth
- name
variable(s)
- type
floating point number
- range
[-infinity; +infinity]
- dimensionality
cube or 4D
- description
values of (a) certain variable(s)
- name
time (steps)
- type
integer or double
- range
[0; +infinity]
- dimensionality
vector
- description
days/months since …
6.5.4.4. Output data
- name
index timeseries (values or Boolean)
- type
floating point or Boolean
- description
timeseries of values or Boolean results of index calculation