hw_datafr: Example of extreme event characteristics dataset
Description
This dataset provides an example of the structure of the dataframe of
extreme events and their characteristics, as created by gen_hw_set.
This example dataset can be used in developing custom functions to use with
apply_all_models.
Format
A dataframe with 258 rows and 23 columns. The variables are:
- hw.number: A sequential number identifying each heat wave in a city;
- mean.var: Average daily temperature across all days in the
heat wave, in degrees Fahrenheit;
- max.var: Highest daily temperature across days in the
heat wave, in degrees Fahrenheit;
- min.var: Lowest daily temperature across days in the
heat wave, in degrees Fahrenheit
- length: Number of days in the heat wave;
- start.date: Date of the first day of the heat wave;
- end.date: Date of the last day of the heat wave;
- start.doy: Day of the year of the first day of the heat wave
(1 = Jan. 1, etc.);
- start.month: Month in which the heat wave started (1 = January,
etc.);
- days.above.abs.threshold.1: Number of days in the heat wave above 80 degrees
Fahrenheit;
- days.above.abs.threshold.2: Number of days in the heat wave above 85 degrees
Fahrenheit;
- days.above.abs.threshold.3: Number of days in the heat wave above 90 degrees
Fahrenheit;
- days.above.abs.threshold.4: Number of days in the heat wave above 90 degrees
Fahrenheit;
- days.above.99th: Number of days in the heat wave above the 99th
percentile temperature for the city, using the period specified
by the user with the
referenceBoundaries argument in
gen_hw_set as a reference for determining these
percentiles;
- days.above.99.5th: Number of days in the heat wave above the 99.5th
percentile temperature for the city, using the period specified
by the user with the
referenceBoundaries argument in
gen_hw_set as a reference for determining these
percentiles;
- first.in.year: Whether the heat wave was the first to occur in its
calendar year (Note: this characteristic is likely not useful in
southern hemisphere studies.);
- threshold: The temperature used as the threshold for the
heat wave definition in the city;
- mean.var.quantile: The percentile of the average daily mean
temperature during the heat wave compared to the city's year-round
temperature distribution, based on the temperatures for the city
during the period specified by the
referenceBoundaries
argument in gen_hw_set;
- max.var.quantile: The percentile of the highest daily mean
temperature during the heat wave compared to the city's year-round
temperature distribution;
- min.var.quantile: The percentile of the lowest daily mean
temperature during the heat wave compared to the city's year-round
temperature distribution;
- mean.yearround.var: The city's average year-round temperature, based
on the temperatures for the city during the period specified by
the
referenceBoundaries argument in
gen_hw_set;
- mean.seasonal.var: The city's average May--September
temperature, based on the temperatures for the city during the
period specified by the
referenceBoundaries argument
in gen_hw_set; and
- city: The identifier for the city, as given in the file
specified in the
citycsv argument of
gen_hw_set.