FlashAustria {FlashAustria}R Documentation

Flash Counts in Austria 2010–2018

Description

Lightning discharges counted on 32 x 32 sq-km grid over Austria, Europe, for the years 2010–2018 and the month May–August, detected by the ground-based Austrian Lightning Detection and Information System (ALDIS). A selection of atmospheric parameters from the fifth ECMWF re-analysis (ERA5) interpolated nearest neighbour method to the grid of the counted lightning discharges. The temporal resolution of the data is hourly.

Format

Three objects FlashAustriaTrain, FlashAustriaEval and FlashAustriaCase are added to the environment. FlashAustriaTrain and FlashAustriaEval are data.frames. FlashAustriaCase is an "sf" object, containing a geometry column providing the 32 x 32 sq-km grid as polygons.

counts

ALDIS counts of cloud-to-ground lightning discharges.

d2m

2m dewpoint temperature.

q_prof_PC1

First principal component of the vertical profile of specific humidity.

cswc_prof_PC4

Fourth principal component of the vertical profile of specific snow water content.

t_prof_PC1

First principal component of the vertical profile of temperature.

v_prof_PC2

Second principal component of the vertical profile of v component of wind.

sqrt_cape

Square root of convective available potential energy.

sqrt_lsp

Square root of large scale precipitation.

Details

Only a random subset of the data given positive counts is provided for training and evaluation: FlashAustriaTrain and FlashAustriaEval contain 12000 and 6000 observations, respectively. The following prediction cases are provided: 2019-09-15 06 UTC, 2001-09-15 17 UTC, 2001-09-15 23 UTC and 2001-09-16 13 UTC.

References

To cite the flash count data (observations), please use:

Schulz, W., Cummins, K., Diendorfer, G., and Dorninger, M. (2005). Cloud-to-Ground Lightning in Austria: A 10-Year Study Using Data from a Lightning Location System. J. Geophys. Res., 110, D09101. https://doi.org/10.1029/2004JD005332

Schulz, W. and Diendorfer, G. and Pedeboy, S. and Poelman, D. R. (2016). The European Lightning Location System EUCLID—Part 1: Performance Analysis and Validation. Nat. Hazards Earth Syst. Sci., 16, 595–605. https://doi.org/10.5194/nhess-16-595-2016

To cite the reanalyses data (covariates), please use:

Copernicus Climate Change Service (C3S) (2017). ERA5: Fifth Generation of ECMWF Atmospheric Reanalyses of the Global Climate. Copernicus Climate Change Service Climate Data Store (CDS), date of access: June 2019. https://cds.climate.copernicus.eu/cdsapp#!/home

Examples

data("FlashAustria", package = "FlashAustria")
head(FlashAustriaTrain)
nrow(FlashAustriaTrain)
hist(FlashAustriaTrain$counts,
  breaks = c(seq(.5, 50.5), Inf),
  xlim = c(0, 50),
  col = "lightgray"
)

plot(counts ~ log(sqrt_cape), FlashAustriaTrain)

nrow(FlashAustriaEval)

if(require("sf")) {
  class(FlashAustriaCase)
  head(FlashAustriaCase)
  plot(st_geometry(FlashAustriaCase))
}


[Package FlashAustria version 0.3-0 Index]