季风的相互作用与中期纬度干扰-地球科学堆栈交换江南电子竞技平台江南体育网页版 最近30从www.hoelymoley.com 2023 - 07 - 10 - t05:17:22z //www.hoelymoley.com/feeds/question/2771 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/2771 9 季风与纬度中期干扰的交互 gansub //www.hoelymoley.com/users/1066 2014 - 11 - 12 - t06:32:10z 2016 - 11 - 21 - t20:54:07z < p >在过去的几年里纷纷印度目睹极端洪水事件引起的季风槽colloding与中期出现暂时的纬度干扰,这些似乎引发洪水。例子——http://en.wikipedia.org/wiki/2013_North_India_floods < a href = " http://en.wikipedia.org/wiki/2013_North_India_floods " > < / >和< a href = " http://en.wikipedia.org/wiki/2014_India%E2%80%93Pakistan_floods " > http://en.wikipedia.org/wiki/2014_India%E2%80%93Pakistan_floods < / >。我的问题涉及到的物理交互。< / p > < p >我的问题如下:< br / > 1)向北传播波发出的850 hPa水平(BSISO)似乎阻尼MJO就可在喜马拉雅山麓(北纬30)。地形相互作用后我想850 hpA的位势高度似乎提高了。是一个精确的声明,即在山里850 hPa季风槽(更高)的位势高度高于海平面?< / p > < p > 2)然后行星波在500 hPa高度似乎浸在热带季风槽相互作用。上层槽“传播”如何?这是由于准geostropic理论吗? < / p > //www.hoelymoley.com/questions/2771/-/2787 # 2787 5 答案由gansub季风与纬度中期干扰的交互 gansub //www.hoelymoley.com/users/1066 2014 - 11 - 13 - t09:11:27z 2014 - 11 - 16 - t08:50:33z < p >这是两个部分的回答,但这决不是完整的。< / p >
  1. Most monsoonal research is focused on explaining the monsoonal passage through the plains of the Indian subcontinent. Very few papers can be found on how the same troughs cause rainfall at 3000 meters. I would like an authoritative reference on Monsoonal Mountain Meteorlogy. All that is known is that the MJO (BSISO) troughs and ridges at the 850 hPa seem to be damped at the Himalayan foothills.
  2. Regarding the 500 hPa propagating downwards I cannot get further more information than introducing the concept of a downward propagating Rossby wave. And as far as the physics that explains what happens when these two disparate systems meet it is at best an open research topic.
  3. I have read recent discussions(no reference available yet) that the two systems may need to "line up" in other words the geometric center of the upper level system needs to pass through the center of the lower level trough.Very recently Tropical Cyclone Hudhud moved up northwards towards the Himalayas and caused a blizzard in Nepal. There was a corresponding mid latitude disturabance at around the same time over the western Himalayas but extraordinary damage was prevented because the two systems did not line up.

What is of more serious concern is the fact that there have been four such incidents in recent times - 1) Pakistan Floods 2010 2) North Indian Floods 2013. 3) Indian Pakistan floods of 2014. 4) The near miss with Cyclone Hudhud. What climatic changes are causing these collisions between disparate systems is a new field of study. Both weather and climate models will be stretched to predict these sort of collisions.

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