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aThe contributions of the volumetric expansion term in the vorticity magnitude equation could be negative or positive depending on the flow being in expansion or in contraction. Our results (not shown) indicate that the highest vorticity values occur where the volumetric expansion term has its highest...
These ones are also correlated with maximum and minimumvorticityvalues, with troughs associated with higher vorticity and ridges with lower vorticity. An axis of maximum vorticity is indicated by a short-wave trough. So what?Weather is explained this way:airrises and clouds form ahead of a troug...
aSetting m*=0, b*=0, and k*=0 in equation (3) leaves the cylinder free to move in the transverse plane solely under the influence of forces which are induced by unsteady vorticity 设置m*=0, b*=0和k*=0在式(3)留下圆筒自由单一地移动横向飞机受不平稳的涡量导致的力量的影响 [translate...
Putting this all together, DPVA means: positive vorticity increasing from the surface to the upper levels is being advected. DPVA causes the troposphere to become more dynamically unstable. DPVA occurs inshortwavesand within just about any trough. DPVA contributes to rising air. The spin up of ...
Vorticity helps to spin that up, dry powdery snow into a little funnel. Usually, they are pretty short-lived and not really very impactful." What Is Smoke on the Water a.k.a. a Steam Devil? Another rare weather event is smoke on the water. This is an eerie and sometimes beautiful ...
When do analysts need to forecast hourly weather? Astonishing changes in the air can surprise us at any time.
represent the planetary vorticity and the vertical component of relative vorticity, respectively, a is radius of the Earth, \(\varphi\) is latitude, \(u\) and \(v\) are zonal and meridional winds, respectively, \({Ro}\) is the local Rossby number (defined as \...
Part II: Role of potential vorticity production for cyclone intensification Hence, in the two hemispheres cyclone intensification responds differently to an increase in WCB strength, which however is consistent with the opposite ... H Binder,H Joos,M Sprenger,... - 《Weather & Climate Dynamics》...