WTdiff {sspline}R Documentation

World Average Winter Temperature Change (1963-1967 Vs 1993-1997)

Description

The WTdiff data frame has 1391 rows and 4 columns. It contains the average temperature change from 1963-1967 to 1993-1997 for those stations having non-missing observations on the winter (Dec-Feb) for ten years (1963-1967 and 1993-1997).

Format

This data frame contains the following columns:

recid
a numeric vector containing the coded information of the stations (length 11). The first three digits represent the country code; the next five digits, the station number; the last three digits, whether a station is a WMO staion or close to one.
lon
a numeric vector containing the longitudes (in degrees) of the stations.
lat
a numeric vector containing the latitudes (in degrees) of the stations.
avgd
a numeric vector containing the average temperature change from 1963-1967 to 1993-1997 for the stations.

Source

The Global Historical Climatology Network (GHCN)
http://www.ncdc.noaa.gov/cgi-bin/res40.pl?page=ghcn.html

Examples

data(WTdiff)

## Fit a smoothing spherical spline with part of the data
subdat <- WTdiff[sample(nrow(WTdiff), 200), 2:4]
attach(subdat)

smooth.sspline(lon, lat, avgd)

detach(subdat)

[Package sspline version 0.1-5 Index]