ThunderstormAustria {FlashAustria} | R Documentation |
Thunderstorm occurrence on 32 x 32 sq-km grid over Austria, Europe, for the years 2010–2018 and the month May–August, derived 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.
Two objects ThunderstormAustriaTrain
and ThunderstormAustriaEval
are added to the environment, both of which are data.frame
s.
factor indicating the occurrence of a tunderstorm.
2m dewpoint temperature.
First principal component of the vertical profile of specific humidity.
Fourth principal component of the vertical profile of specific snow water content.
First principal component of the vertical profile of temperature.
Second principal component of the vertical profile of v component of wind.
Square root of convective available potential energy.
Square root of large scale precipitation.
The World Meteorological Organization (WMO) defines a thunderstorm as follows: “One or more sudden electrical discharges, manifested by a flash of light (lightning) or rumbling sound (thunder).”
Following this definition the thunderstorm occurrence is derived
from the ALDIS lightning detection data: If at least one lightning
discharge was detected in a 32 x 32 sq-km grid, it indicates the
occurrence of a thunderstorm.
Only a random subset of the data given, thunderstorm occurrence
is provided for training and evaluation:
ThunderstormAustriaTrain
and ThunderstormAustriaEval
contain 40000 and 20000 observations, respectively.
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
The WMO's definition of thunderstorm:
https://cloudatlas.wmo.int/thunderstorm.html
data("ThunderstormAustria", package = "FlashAustria") head(ThunderstormAustriaTrain) nrow(ThunderstormAustriaTrain) prop.table(table(ThunderstormAustriaTrain$thunderstorm)) plot(thunderstorm ~ log(sqrt_cape), ThunderstormAustriaTrain) nrow(ThunderstormAustriaEval)