What question did this study set out to answer?

Explore the behavior and dissipation of morning glories in the Gulf of Carpentaria using mesoscale modeling.

February 5, 2026

On the mortality of morning glories

Key Points

Explore the behavior and dissipation of morning glories in the Gulf of Carpentaria using mesoscale modeling.
Used a coarse resolution three-dimensional mesoscale model (Pielke) with orography.
Simulated the propagation of the morning glory phenomenon during night hours.
Analyzed the influence of solar heating on the dissipation of the morning glory.
The model predicts the morning glory propagates without significant attenuation at night.
Findings indicate that morning glories mark the onset of a bore rather than a long wave.
Under cloudless conditions, morning glories dissipate quickly due to solar heating.

Abstract

The Gulf of Carpentaria morning glory has been simulated with a coarse resolution three-dimensional mesoscale (Pielke) model with orography. The simulation is surprisingly good. It predicts (as observed) that the glory should propagate with little attenuation during the night hours, although there is no westerly thermal wind in the model. Its evidence is clear that the glory marks the onset of a bore rather than a finite-length long wave; and it shows with little doubt that the glory dissipates rapidly, at least with cloudless conditions, under the influence of solar heating over land, and is not likely to be responsible for the pressure waves observed at Tennant Creek, far inland to the west.

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