Articles | Volume 17, issue 6
Nat. Hazards Earth Syst. Sci., 17, 861–879, 2017
https://doi.org/10.5194/nhess-17-861-2017
Nat. Hazards Earth Syst. Sci., 17, 861–879, 2017
https://doi.org/10.5194/nhess-17-861-2017

Research article 13 Jun 2017

Research article | 13 Jun 2017

High-resolution modelling of atmospheric dispersion of dense gas using TWODEE-2.1: application to the 1986 Lake Nyos limnic eruption

Arnau Folch et al.

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Short summary
Atmospheric dispersal of a gas denser than air can threat the environment and surrounding communities. In complex terrains, microscale winds and local orographic features can have a strong influence on the gas cloud behavior, potentially leading to inaccurate model results if not captured by coarser-scale simulations. We introduce a methodology for microscale wind field characterization and validate it using, as a test case, the CO2 gas dispersal from 1986 Lake Nyos eruption.
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