extRemes (version 2.2)

PORTw: Annual Maximum and Minimum Temperature

Description

Annual maximum and minimum Winter temperature (degrees centigrade) with a covariate for the North Atlantic Oscillation index from 1927 through 1995. Data is for Winter for Port Jervis, New York (PORTw) and Spring for Sept-Iles, Quebec (SEPTsp).

Usage

data(PORTw)

Format

A data frame with 68 observations on the following 16 variables.

Year

a numeric vector giving the year.

MTMAX

a numeric vector giving the mean winter maximum temperatures (degrees centigrade).

MTMIN

a numeric vector giving the mean winter minimum temperatures (degrees centigrade).

STDTMAX

a numeric vector giving the standard deviations of maximum winter temperatures (degrees centigrade).

STDMIN

a numeric vector giving the standard deviations of minimum winter temperatures (degrees centigrade).

TMX1

a numeric vector giving the maximum winter temperature (degrees centigrade).

TMN0

a numeric vector giving the minimum winter temperature (degrees centigrade).

MDTR

a numeric vector giving the mean winter diurnal temperature range (degrees centigrade).

AOindex

a numeric vector giving the Atlantic Oscillation index (see Thompson and Wallace (1998)).

Details

See Wettstein and Mearns (2002) for a much more detailed explanation of the above variables.

References

Thompson, D. W. J. and Wallace, J. M. (1998) The Arctic Oscillation signature in the wintertime geopotential height and temperature fields. Geophys. Res. Lett., 25, 1297--1300.

Wettstein, J. J. and Mearns, L. O. (2002) The influence of the North Atlantic-Arctic Oscillation on mean, variance and extremes of temperature in the northeastern United States and Canada. Journal of Climate, 15, 3586--3600.

Examples

data(PORTw)
str(PORTw)
par( mfrow=c(2,1))
plot(PORTw[,"TMX1"], type="l", lwd=2, xlab="", xaxt="n", ylab="Maximum Temperature (C)")
plot(PORTw[,"TMN0"], type="l", lwd=2, xlab="", xaxt="n", ylab="Minimum Temperature (C)")