Eddy Length Scale Response to Static Stability Change in an Idealized Dry Atmosphere: A Linear Response Function Approach

2021 ◽  
Author(s):  
Pak Wah Chan ◽  
Pedram Hassanzadeh ◽  
Zhiming Kuang
Keyword(s):  
Response Function ◽  
Linear Response ◽  
Static Stability ◽  
Function Approach ◽  
Length Scale ◽  
Scale Response ◽  
Linear Response Function ◽  
Stability Change

Eddy Length Scale Response to Static Stability Change in an Idealized Dry Atmosphere: A Linear Response Function Approach*

2021 ◽  
Author(s):  
Pak Wah Chan ◽  
Pedram Hassanzadeh ◽  
Zhiming Kuang
Keyword(s):  
Response Function ◽  
Zonal Wind ◽  
Linear Response ◽  
Static Stability ◽  
Length Scale ◽  
Controlled Experiments ◽  
Mean Flow ◽  
Near Surface ◽  
Zonal Scale ◽  
Linear Response Function

AbstractThe response of mid-latitude equilibrated eddy length scale to static stability has long been questioned but not investigated in well-controlled experiments with unchanged mean zonal wind and meridional temperature gradient. With iterative use of the linear response function of an idealized dry atmosphere, we obtain a time-invariant and zonally-uniform forcing to decrease the near-surface temperature by over 2 K while keeping the change in zonal wind negligible (within 0.2m s−1). In such experiments of increased static stability, energy-containing zonal scale decreases by 3–4%, which matches with Rhines scale decrease near the jet core. Changes in Rossby radius (+2%), maximum baroclinic growth scale (-1%) and Kuo scale (0%) fail to match this change in zonal scale. These findings and well-controlled experiments help with better understanding of eddy–mean flow interactions and hence the mid-latitude circulation and its response to climate change.

Linear response function approach for the boundary problem of QM/MM methods

2012 ◽  
Vol 113 (3) ◽  
pp. 336-341 ◽  
Author(s):  
Koki Ueda ◽  
Shusuke Yamanaka ◽  
Kazuto Nakata ◽  
Masahiro Ehara ◽  
Mitsutaka Okumura ◽  
...  
Keyword(s):  
Boundary Problem ◽  
Response Function ◽  
Linear Response ◽  
Function Approach ◽  
Linear Response Function

Unified linear response function for zonal flows with full finite orbit effects

2007 ◽  
Vol 14 (11) ◽  
pp. 112512 ◽  
Author(s):  
T. Watari ◽  
Y. Hamada ◽  
A. Nishizawa ◽  
J. Todoroki
Keyword(s):  
Response Function ◽  
Linear Response ◽  
Zonal Flows ◽  
Linear Response Function
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