Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Joseph Werne"'
Publikováno v:
Journal of Geophysical Research: Atmospheres. 119:9359-9375
A companion paper describes high-resolution, ground-based imaging of apparent Kelvin-Helmholtz instabilities (KHI) observed in noctilucent clouds (NLCs) near the polar summer mesopause. Here we employ direct numerical simulations of KHI at Richardson
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90dee640a9f91c3de61d02858f301584
https://doi.org/10.1002/2014jd021833
https://doi.org/10.1002/2014jd021833
Publikováno v:
Journal of Geophysical Research: Atmospheres. 119:8858-8871
A companion paper describes high-resolution, ground-based imaging of apparent Kelvin-Helmholtz instabilities (KHI) observed in OH airglow at ~87 km over the Andes Lidar Observatory at 30°S. Here we employ direct numerical simulations (DNSs) and larg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9b2fe023b8911a8b3bff2df3b635798
https://doi.org/10.1002/2014jd021737
https://doi.org/10.1002/2014jd021737
Publikováno v:
Journal of the Atmospheric Sciences. 70:3710-3734
Four idealized direct numerical simulations are performed to examine the dynamics arising from the superposition of a monochromatic gravity wave (GW) and sinusoidal linear and rotary fine structure in the velocity field. These simulations are motivat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16a4f0a0c42ff981e48ae157d9a9e7b6
https://doi.org/10.1175/jas-d-13-055.1
https://doi.org/10.1175/jas-d-13-055.1
Direct numerical simulation data of an evolving Kelvin-Helmholtz instability have been analyzed in order to characterize the dynamic and kinematic response of shear-generated turbulent flow to imposed stable stratification. Particular emphasis was pu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10ea140ea7b918b3a20a4b8d9d6dc3ed
http://hdl.handle.net/10852/48620
http://hdl.handle.net/10852/48620
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 68:247-265
Recently we have begun to appreciate more fully the degree and the consequences of variability in gravity wave (GW) forcing of the middle atmosphere. Such variability arises for a number of reasons. GW sources in the lower atmosphere reflect the sign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b14adf5d52e3f1e0f5e0fcc4991207f3
https://doi.org/10.1016/j.jastp.2005.04.010
https://doi.org/10.1016/j.jastp.2005.04.010
Publikováno v:
Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere. 26:259-262
Convection, generated by destabilising buoyancy forcing, is a significant source of vertical mixing in the ocean and atmosphere. Ensembles of convective elements or plumes transport buoyancy and tracers across the convective layer. Here we examine nu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2abed6a2cd008f5994b1c7e714394f8
https://doi.org/10.1016/s1464-1909(01)00003-x
https://doi.org/10.1016/s1464-1909(01)00003-x
Publikováno v:
Radio Science. 35:783-798
We simulate very high frequency (VHF) radar backscatter from turbulent irregularities in the mesosphere and examine the process of calculating key turbulence parameters from radar Doppler spectral moments. Mesospheric turbulence is represented by a t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34761bac9009c33fba01d63a82bb7bb5
https://doi.org/10.1029/1999rs002269
https://doi.org/10.1029/1999rs002269
Publikováno v:
Journal of Fluid Mechanics. 391:151-187
Atmospheric and oceanic convection often occurs over areas occupied by many localized circulation elements known as plumes. The convective transports therefore may depend not only on the individual elements, but also on the interactions between plume
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c6b94d50033e953737c95b87ca135d6
https://doi.org/10.1017/s0022112099005236
https://doi.org/10.1017/s0022112099005236
Autor:
Joseph Werne, David C. Fritts
Publikováno v:
Geophysical Research Letters. 26:439-442
The highest-resolution 3D direct numerical simulations to date of Kelvin-Helmholtz instability are reported. The ensuing turbulence spans a broad range of spatial scales and exhibits Kolmogorov spectra in horizontal planes. Non-Gaussian statistics ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2f2111ba439c7e65104f641c72d0d68
https://doi.org/10.1029/1999gl900022
https://doi.org/10.1029/1999gl900022
Publikováno v:
Theoretical and Computational Fluid Dynamics. 11:251-261
The incompressible Navier–Stokes equation is considered in the limit of rapid rotation (small Ekman number). The analysis is limited to horizontal scales small enough so that both horizontal and vertical velocities are comparable, but the horizonta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d23c42f012c63cf5da699e919a4e208
https://doi.org/10.1007/s001620050092
https://doi.org/10.1007/s001620050092