heat {ExtremalDep} | R Documentation |
Summer temperature maxima in Melbourne, Australia between 1961 and 2010.
Description
The dataset corresponds to the summer maxima taken over the period from August to April inclusive, recorded between 1961 and 2010 at 90 stations on a 0.15 degree grid in a 9 by 10 formation.
Details
The first maximum is taken over the August 1961 to April 1962 period, and the last maximum is taken over the August 2010 to April 2011 period. The object heatdata
contains the core of the data:
vals
: Amatrix containing the
summer maxima at the
locations.
sitesLL:
Amatrix containing the sites locations in Latitude-Longitude, recentred (means have been substracted).
sitesEN:
Amatrix containing the sites locations in Eastings-Northings, recentred (means have been substracted).
vals
: Amatrix containing integers indicating the “heatwave” number of each of the
summer maxima at all
locations. Locations on the same row with the same integer indicates that they were obtained from the same heatwave. Heatwaves are defined over a three day window.
sitesLLO:
Amatrix containing the sites locations in Latitude-Longitude, on the original scale.
sitesENO:
Amatrix containing the sites locations in Eastings-Northings, on the original scale.
ufvals
: Amatrix containing the
summer maxima at the
locations, on the unit Frechet scale.
Standardisation to unit Frechet is performed as in Beranger et al. (2021) by fitting the GEV distribution marginally using unconstrained location and shape parameters and the shape parameter to be a linear function of eastings and northings in 100 kilometre units. The resulting estimates are given in the objects locgrid
, scalegrid
and shapegrid
, which are matrices.
Details about the study region are given in mellat
and mellon
, vectors of length and
which give the latitude and longitude coordinates of the grid.
References
Beranger, B., Stephenson, A. G. and Sisson, S.A. (2021) High-dimensional inference using the extremal skew-t process Extremes, 24, 653-685.
Examples
image(x=mellon, y=mellat, z=locgrid)
points(heatdata$sitesLLO, pch=16)