Journal Article

FZJ-2019-06206

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Multilayer Observations and Modeling of Thunderstorm-Generated Gravity Waves Over the Midwestern United States

Heale, C. J. (Corresponding author) ; Snively, J. B. ; Bhatt, A. N. ; Hoffmann, L.FZJ* ; Stephan, C. C. ; Kendall, E. A.

2019
Wiley Hoboken, NJ

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Please use a persistent id in citations: http://hdl.handle.net/2128/23786  doi:10.1029/2019GL085934

Abstract: We present multilayer observations and numerical simulations of gravity waves (GWs) generated by a series of Mesoscale Convective Systems over the midwestern United States. Strong semi‐concentric GWs were observed and modeled, which couple from their tropospheric sources to the thermosphere, displaying strong nonlinearity indicated by instability, breaking, and formation of turbulent vortices. GWs in the stratosphere display a large range of horizontal scales from 34‐400 km, however, the smaller wavelength waves break rapidly in the mesosphere and lower‐thermosphere (MLT). Larger scale (≥150 km) waves dominate in the thermosphere and display northwestward propagation at 200‐300 km altitude, opposing the mean winds. Despite strong molecular viscosity and thermal conductivity in the thermosphere, steepened wave fronts, which may indicate nonlinearity, is identified in 630 nm airglow imagers. The agreement between model and data suggest new opportunities for data‐constrained simulations that span multi‐layer observables, including MLT‐region airglow not captured for this event.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)

Appears in the scientific report 2019

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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