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Killerbeast

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  • Gender
    Male
  • Location
    Burgas, Bulgaria
  • Interests
    Tennis
  • Weather Preferences
    Severe summer weather, winter extratropical cyclones

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  1. It seems that a squall line is being tracked on this radar image. For further analysis and interpratation I must see the radar loop, but this is what I think at first glimpse. The squall lines are characterized by a very strong reflectivity on the leading edge, a transition zone just after it and a stratiform precipitation area. For it to be initiated, there has to be some linear forcing mechanism such as a dry line or a cold front. You must look close at the CAPE and SHEAR values to determine what the most likely structure would be. About the tornado question: It is basically found in supercells : convective cells which possess a rotating updraft. It has a mesocyclone and there you can most probably find wall clouds or a tornado.
  2. http://ocean.dmi.dk/arctic/icecover.uk.php It seems very bad relating the environment around the Arctic circle. The lowest Arctic sea on record is already a fact, not a fiction. I had my reservations about it since after 2007 the summer ice showed a slight increase compared to that year, but the summer of 2012 broke all the records. I am wondering what the effect on the circulation it would have. In my opinion, the following winter is very likely to be a cold one, like 2009-2010. The excessive warmth generated around the poles won't allow the pressure to stabilize (i.e. to be predominantly high) and this could as well lead to one pattern that was predominant during the last winter. The strong Siberian anticyclone is not to be ruled out. But maybe it's too early for such radical conclusions. We have to look over the official seasonal forecasts to make final conclusions.
  3. Yes, it was resolved. But, anyway, it appeared quite strange. I made some investigation, asked a few people about it, and they said to me that the problem may have been due to a software problem or because of the 'blue moon'.
  4. Your suggestions are totally true. Yes, the displacement of the polar vortex very well describes these Rossby waves and the dynamics of the mid-latitude atmosphere. The bigger the amplitude is, the larger the blocking circulation patterns become. If the PV is more displaced this limits the zonal prevailing flow and gives way to a more polarward-oriented one. If we have e blocking pattern, cold spells are more likely to occur at low latitudes and vice versa. If the PV is strong and concentrated: we have a north-south split of the weather. There are weak troughs producing weak surface lows travelling fast from west to east. One very important application of the stratospheric vortex is its role in ozone depletion. It takes place basically on the South pole where the air is stuck and the chemical reactions leading to the process of ozone depletion are very easily carried out.
  5. Here are some notes I made for you in order to understand these statements mathematically:
  6. The anglular acceleration is connected and arises from the fact that, when circling around an axis, the air parcel changes its velocity. As you may already know, the change in velocity can be accomplished in two ways: by changing its magnitude or its direction. In the case of anglular acceleration we have the second option. The angular acceleration is given by the expression v^2/R, where V is the linear velocity and R - the radius of Earth. On the other hand: the momentum is simply the mass of an object multiplied by its speed. This gives m.w (where w is omega, or angular speed, the connection between the angular speed and the linear speed is V=R.w). What is more importantly, the angular acceleration (not momentum) and the Centripetal force make a clear reference to the Centrifugal force (the opposite of Centripetal force = m. v^2/R where v^2/R, as I wrote, is the angular acceleration). These are the basics of angular momentum, angular acceleration and the two forces. Fruther investigation opens the doors into the dynamical meteorology which gives us an opportunity to make use of these assumption and describe the dynamics of the fluid. Shortly, the centrifugal force helps us to describe the Coriolis force and complete the set of equotions that describe the motion of the fluid. If you have any questions, do not hesitate to ask me. I may be able to write down all these things on a sheet of paper and post it there. And finally: I hope this could have helped you
  7. In the morning I saw this picture showing a crash of the satellites. I checked if there is a problem with the site itself, but, unfortunately, it turned out that everywhere there was this way. To be honest, my suggestion that there is some kind of a electromagnetic disturbtance is not to be ruled out. The thing is nowhere one can find out the pure reason for this strangly looking picture. Everyone with any information is welcomed to discuss the hitch here.
  8. In addition to what've been said up to now, I strongly recommend you familiarize with the main could types: these are: 1) cumulus 2) stratus 3) cirrus All other clouds are a combination of the above mentioned and you'll find it very easy to deal with them. The next step would be to aquire the skill of putting these type of cloulds into their proper elevation. That's to say: to determine if you have a low, medium or high clouds. P.S.: A good shot on the cumulus clouds. You've nailed it! Just to be quite accurate we must keep in mind that there are some stratocumulus cumulogenitus, which are simply the rest of your cumulus clouds. They appear after the dissipation process takes place. http://www.metoffice.gov.uk/media/pdf/r/i/Cloud_types_for_observers.pdf This is a guide from Met office in which clouds are discussed widely and broadly. I think you'll find it useful. Good luck!
  9. Tomorrow a new weather system is expected over Great Britain. In terms of its dynamics it can be said that it will be in its last stages of development, with its axes almost vertical which gives us a barotropic atmosphere. Anyway, the cold occlusion will cause widespread precipitations and almost no change in temperatures. A relative shift towards more sunny spells will come with the ridge from southwest. The temperatures at 850 hPa will rise to 10 - 14 degrees.
  10. So, we've had the cold front passing though the Balkans that brought the end of the African heat wave that was around for almost the whole summer. The front was pretty fast, there were some heavy winds, at some places up to 15 - 16 m/s and gusts above 20 m/s (especially in the lee regions). Looking at the 500 hPa isobaric level, a weak low formed, which allowed the front to slow down a bit and wrapped around the clouds. The last led to more stratiform precipitations in the norteastern regions with places having more than 30 mm of rain. What to expect in the next few days? It'll be predominantly stable, a ridge will slowly develop over the Balkans and a warm advection is indeed expected. Cooler than the rest of the coutry will remain in East Bulgaria, with a fresh NE flow at surface and maimum temperatures below the 30s.
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