Year: 2024
Type: article
Abstract: Tornado records in Chile show an apparent seasonality with a peak between May and June. We study this seasonality in central‐south and austral Chile by analyzing three indicators of tornado environments: vorticity generation parameter (VGP), storm‐relative helicity (SRH) and mean relative humidity . Annual cycles of VGP, SRH and show favorable conditions during the fall in the central‐south region, well correlated with the records in the area, and associated with maximum values of low‐level (0–1 km) and deep‐layer (0–6 km) wind shear, and relatively high values of most unstable CAPE. In the austral region, favorable conditions occur during the summer, in the presence of maximum deep‐layer wind shear and maximum values of the most unstable CAPE. Analysis of temperature, wind, and humidity were performed to understand the mechanisms that lead to the development of these conditions in these two regions.
Source: Geophysical Research Letters
DOI: 10.1029/2024gl110900
Authors: V. Caballero‐Morán, R. Rondanelli
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
SDG: Climate action
Open Access status: gold
Estimated APC paid: $2,900
OpenAlex ID: W4405887096