PCI

Luo_Suppe2026-08-15

gma.climet.index.PCI

function PCI(pre, axis = None, scale = 1, periodicity = 12):

Calculate Precipitation Concentration Index.

Parameters:

pre: array.

Precipitation (mm).

Optional:

axis = int. Default None.

Calculation axis. If not set (None), multidimensional data will be expanded to 1 dimension for calculation.

scale = int. Default 1.

Time scale. For example: 1, 3 or others.

periodicity = int. Default 12.

Periodicity of data. For example: the monthly scale can have a period of 12.

*Note: scale||periodicityarebasedoncalculatedaxis!.

Returns:

Type: array.

*Note:

1.The PCI index scales down the amount of axis data. On axis,

there is only one set of results per periodicity..

2.Data on axis with less than one periodicity will not be computed!.

References.

De Luis M, Gonz��lez-Hidalgo J C, Ravent��s J, et al. 1997. Distribucion espacial de la.

concentracion y agresividad de la lluvia en el territorio de la Comunidad Valenciana [J]..

Cuaternario y Geomorfologia, 11: 33�C44.

Oliver J E. 1980. Monthly precipitation distribution: Acomparativeindex[J].Professional.

Geographer, 32: 300�C309.