Abstract
AbstractThe seasonal lightning distribution at the Gaisberg tower in Austria is very different from the distribution observed in a circular ring with a radius of 2 to 10 km around the tower. The distribution in the circular ring shows the typical peak during the convective season. In contrast, we find a bimodal distribution with a peak in early spring and late fall at the tower. By selecting two cases representing these two situations, the differences in the meteorological setting are discussed.Lightning events observed solely at the Gaisberg tower are characterized by strong horizontal winds in the lower layers of the atmosphere from the northwest sector. This direction represents the open window from the Gaisberg towards the foreland, meaning there are no mountains upstream, and the flow can reach the Gaisberg unhindered. Cases of this type occur mainly during the cold season but are not limited to it.In contrast, lightning events at the tower and in its vicinity are typical for convective events with low horizontal wind speed in the lower layers and occur mainly during the convective season.
Publisher
Springer Science and Business Media LLC
Subject
Electrical and Electronic Engineering
Reference14 articles.
1. Diendorfer G, Pichler H, Mair M (2009) Some parameters of negative upward-initiated lightning to the Gaisberg tower (200-2007). IEEE Trans Electromagn Compat 51(3):443–452. https://doi.org/10.1109/TEMC.2009.2021616
2. Diendorfer G, Zhou H, Pichler H (2011) Review of 10 years oflightning measurement at the Gaisberg Tower in Austria. In: Proc 3rd Int Symp Winter Lightning Sapporo, 15–19 Jun 2011, pp 185–190
3. Zhou H, Diendorfer G, Thottappillil R, Pichler H, Mair M (2011) Characteristics of upward bipolar lightning flashes observed at the Gaisberg Tower. J Geophys Res Atmos. https://doi.org/10.1029/2011JD015634
4. Zhou H, Diendorfer G, Thottappillil R, Pichler H, Mair M (2011) Characteristics of upward positive lightning flashes initiated from the Gaisberg Tower. J Geophys Res Atmos. https://doi.org/10.1029/2011JD017269
5. Smorgonskiy A, Rachidi F, Rubinstein M, Diendorfer G, Schulz W (2013) On the proportion of upward flashes to lightning research towers. Atmos Res 129–130:110–116. https://doi.org/10.1016/j.atmosres.2012.08.014