Preprints
https://doi.org/10.5194/egusphere-2024-174
https://doi.org/10.5194/egusphere-2024-174
12 Feb 2024
 | 12 Feb 2024

Thunderstorm characteristics with lightning jumps and dives in satellite-based nowcasting

Felix Erdmann and Dieter Roel Poelman

Abstract. The first Meteosat Third Generation (MTG) satellite was launched in December 2022. Its high resolution Flexible Combined Imager (FCI) in combination with the Lightning Imager (LI) herald a new period for geostationary (GEO) weather observations over Europe, Africa, and adjacent regions. Similar instruments are already operational over the U.S., with the Advanced Baseline Imagers (ABIs) and the Geostationary Lightning Mappers (GLMs). The objective of this study is to gain a deeper understanding of GEO data, with a specific emphasis on sudden increases in a storm's lightning activity, referred to as lightning jumps (LJ), and decreases, known as lightning dives (LD), as observed from a geostationary orbit. ABI-based cloud characteristics of thunderstorms are analyzed while storms are categorized by whether they produced LJs, LDs, or severe weather. It is found that the storms with LJs and/or LDs feature overall similar characteristics as the severe thunderstorms. Those storms typically feature elevated, colder cloud tops, more and stronger overshooting tops (OTs), consequently leading to more structured updrafts. As a result, these storms tend to generate higher convective rain rates (CRRs) on average compared to storms lacking LJs, LDs, and those categorized as non-severe. In particular, thunderstorms experiencing multiple LJs throughout their lifecycle exhibit the most and strongest OTs, signifying highly organized updrafts, extremely cold cloud tops, and highest CRRs. Considering the characteristics mentioned above, these storms, especially those featuring multiple LJs and LDs during their lifecycle, are of particular interest for nowcasting potentially dangerous weather phenomena.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Felix Erdmann and Dieter Roel Poelman

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-174', Anonymous Referee #1, 13 Mar 2024
    • AC2: 'Reply on RC1', Felix Erdmann, 23 Apr 2024
  • RC2: 'Comment on egusphere-2024-174', Anonymous Referee #2, 25 Mar 2024
    • AC1: 'Reply on RC2', Felix Erdmann, 23 Apr 2024
Felix Erdmann and Dieter Roel Poelman
Felix Erdmann and Dieter Roel Poelman

Viewed

Total article views: 464 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
314 119 31 464 18 16
  • HTML: 314
  • PDF: 119
  • XML: 31
  • Total: 464
  • BibTeX: 18
  • EndNote: 16
Views and downloads (calculated since 12 Feb 2024)
Cumulative views and downloads (calculated since 12 Feb 2024)

Viewed (geographical distribution)

Total article views: 453 (including HTML, PDF, and XML) Thereof 453 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 20 Nov 2024
Download
Short summary
This study provides detailed insight into the thunderstorm characteristics associated with abrupt changes in the lightning activity of a thunderstorm – lightning jump (LJ) and lightning dive (LD) – using geostationary satellite observations. Thunderstorms exhibiting one or multiple LJs or LDs feature similar characteristics as severe thunderstorms. Storms with multiple LJs contain strong convective updrafts, and are prone to produce high rain rates, large hail or tornadoes.