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

Description Usage Format Details Author(s) Source References Examples

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).

See wichita

See wichita

Usage

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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 ºC.

TMIN

monthly mean daily minimum temperature, in ºC.

TMED

monthly mean temperature, in ºC.

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 ºC.

Tmax

monthly mean daily maximum temperature, in ºC.

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.

Details

See description.

See wichita

See wichita

Author(s)

Data ported to R by S. Beguería.

Source

The wichita data were obtained from the Global Historical Climatology Network (GHCN, http://www.ncdc.noaa.gov/oa/climate/ghcn-daily/. Data for the balance dataset were extracted from CRU TS V3.1 and from the 20th Century Reanalysis V2 dataset. Data for the balance dataset were taken from Allen et al. (1998), page 69, figure 18.

References

S.M. Vicente-Serrano, S. Beguería, J.I. López-Moreno. 2010. A Multi-scalar drought index sensitive to global warming: The Standardized Precipitation Evapotranspiration Index – 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

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sbegueria/SPEI documentation built on May 8, 2019, 9:57 p.m.