Weakened cyclones, intensified anticyclones and recent extreme cold winter weather events in Eurasia

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Video in TIB AV-Portal: Weakened cyclones, intensified anticyclones and recent extreme cold winter weather events in Eurasia

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Weakened cyclones, intensified anticyclones and recent extreme cold winter weather events in Eurasia
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Extreme cold winter weather events over Eurasia have occurred more frequently in recent years in spite of a warming global climate. To gain further insight into this regional mismatch with the global mean warming trend, we analyzed winter cyclone and anticyclone activities, and their interplay with the regional atmospheric circulation pattern characterized by the semi-permanent Siberian high. We found a persistent weakening of both cyclones and anticyclones between the 1990s and early 2000s, and a pronounced intensification of anticyclone activity afterwards. It is suggested that this intensified anticyclone activity drives the substantially strengthening and northwestward shifting/expanding Siberian high, and explains the decreased midlatitude Eurasian surface air temperature and the increased frequency of cold weather events. The weakened tropospheric midlatitude westerlies in the context of the intensified anticyclones would reduce the eastward propagation speed of Rossby waves, favoring persistence and further intensification of surface anticyclone systems.
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my name is shown in general as University of Alaska-Fairbanks in recent years so there is a strong debating climate studies that global warming has continued the but the system could be words have more frequently occurred the related field continents this
letter shows a spatial structure of a surface that temperature changes in the overtime period the maximum increase of surface air temperature occurred all of the Eurasian continent higher worrying that lead to a time period since the beginning of this century the maximum increase of the surface air temperature shifted and also for to the Arctic Ocean there's a Eurasia continent it got a cold
we found the changes in global warming power is mainly due to the spatial shaved off source occasion pattern the convolutional tripolar structure of for secretion was transferred to the bipolar structure this type of structure mainly reflex seeing hence the rapidity of supper high and Andalucian low we named this pattern as arctic repetition to pattern Simplesse ARPA where they are API to the next 2
faces Arctic Ocean got warmer the Eurasian continent of got colder in this study was mainly analyze them must mean their high were in the reality we cannot a few months later the water directly impact our daily life of is the 1 by 1 stream colder weather events so you this new study we analyze the 6 always priests the cycle and undecided quite the case my
name is to handle at many university of information science and technology and going to introduce major out of this study we particularly look at the
cyclones and anticyclones intensities we found there was a long term becoming of cyclone intensity in green and pronounced intensification of anticyclone at UT after early 2 thousands considering the
intensified anticyclone activity we analyze sea level pressure by using a linear trend and regression Mesos we found the Windows 7 high was strains and the and the nor the westward expanded as a result of the middle latitude temperature was dramatically decreased to better understand the
database extreme cold in here and we analyze of the anti cycles on daily minimum service at temperature the found of an anti-cyclone intense fact the daily minimum temperature was also much decrease in the mid the latitude Europe Asia we further look at the probability density function the Chern stronger and weaker and decide on intensities pick a fragments shift to what I call the temperature in particularly for for the mid and eastern Europe Asia this is a
summary of our main conclusions from this paper thank you for watching this video you are welcome to read our paper at BIO student about details