Datasets: Datasets for illustrating the functions in the SPEI package.

Description

Data used in the examples of the SPEI package: wichita dataset: monthly climate in Wichita (Kansas, lat=37.6475, elevation=402.6 m. a.s.l.) since January 1980; balance dataset: monthly climatic water balance (precipitation minus potential evapotranspiration) at eleven locations around the World, since January 1900; cabinda: one year of data for computing Penman-Monteith ET0 from Allen et al. (1998).

Usage

data(wichita)
data(balance)
data(cabinda)

Arguments

Format

wichita dataset:

YEAR: monthly precipitation totals, in mm.
MONTH: monthly precipitation totals, in mm.
PRCP: monthly precipitation totals, in mm.
TMAX: monthly mean daily maximum temperature, in <U+00BA>C.
TMIN: monthly mean daily minimum temperature, in <U+00BA>C.
TMED: monthly mean temperature, in <U+00BA>C.
AWND: monthly mean wind speed, in km h-1
ACSH: monthly mean sun hours, in h.
ACSH: monthly mean cloud cover, in %.

balance dataset: monthly climatic water balance (precipitation minus potential evapotranspiration) at Indore (India), Kimberley (South Africa), Albuquerque (US), Valencia (Spain), Wien (Austria), Abashiri (Japan), Tampa (US), Sao Paulo (Brasil), Lahore (India), Punta Arenas (Chile) and Helsinki (Finland), in mm.

cabinda dataset: one year of monthly climatic data at Cabinda (Angola, -5.33S 12.11E 20 m), taken from Allen et al. (1998), page 69, figure 18:

mon: month of the year
Tmin: monthly mean daily minimum temperature, in <U+00BA>C.
Tmax: monthly mean daily maximum temperature, in <U+00BA>C.
RH: monthly mean relative humidity, in %.
U2: monthly mean wind speed, in km h-1
tsun: monthly mean sunshine hours, in h.
Rs: monthly mean dialy incoming solar radiation, MJ m-2 d-1.
ET0: monthly ET0 from the original publication, in mm.

References

S.M. Vicente-Serrano, S. Beguer<U+00ED>a, J.I. L<U+00F3>pez-Moreno. 2010. A Multi-scalar drought index sensitive to global warming: The Standardized Precipitation Evapotranspiration Index <U+2013> SPEI. Journal of Climate 23: 1696, DOI: 10.1175/2009JCLI2909.1. R.G. Allen, L.S. Pereira, D. Raes, M. Smith. 1998. JCrop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56. FAO, Rome. ISBN 92-5-104219-5.

Examples

Run this code

data(wichita)
names(wichita)
summary(wichita)

data(balance)
summary(balance)

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