Data set with the numbers of Atlantic Basin tropical storms and
hurricanes for each year from 1950--1997. The variable storm index is
an index of overall intensity of hurricane season. Also listed are
whether the year was a cold, warm or neutral El Nino year and a
variable indicating whether West Africa was wet or dry that year.
Usage
ex1028
Arguments
Format
A data frame with 48 observations on the following 7 variables.
Year
year
ElNino
a factor with levels "cold",
"neutral" and "warm"
Temperature
numeric variable with values -1 if
ElNino is "cold", 0 if "neutral" and 1 if
"warm"
WestAfrica
numeric variable indicating whether West
Africa was wet (1) or dry (0)
Storms
number of storms
Hurricanes
number of hurricanes
StormIndex
index of overall intensity of hurricane season
References
Data were gathered by William Gray of Colorado State University and
reported on USA Today weather page:
http://www.usatoday.com/weather/whurnum.htm