Atmospheric bore convective initiation environments during PECAN 2015
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Date
2020-11-02
Authors
Ziolkowski, Kyle
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Abstract
The understanding of processes that lead to the initiation of elevated nocturnal convective storms is not well understood. The lack of knowledge in regards to nocturnal deep, moist convection (DMC) creates challenges for operational forecasters in predicting the timing and location of these types of storms. The PECAN
field campaign took place from June 1 to July 15, 2015, and set out to further understand the processes that lead to elevated convective initiation. Atmospheric
bores were found to be a common phenomena that occurred during PECAN,
and would initiate DMC as they propagated through the stable nocturnal boundary layer. However, some bores would not initiate any DMC. There is limited understanding of the role that bores play in the nocturnal environment, including how they
interact with DMC. This research focuses on why some bores initiate DMC and while others do not, in order to gain a deeper understanding of the role bores play in regards to the initiation of elevated DMC. The results are summarized into two bore conceptual models as well as a technique that can be used to help forecast bores.
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Keywords
Meteorology, Atmospheric Science, Gravity Waves, Nocturnal Thunderstorms, Nocturnal Convective Initiation