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Climate change in Poland has manifested through significant increases in average, maximum, and minimum annual and seasonal air temperatures, an increasing number of hot days, and a decreasing number of frosty days. [15] A decrease in the number of weather types in a year indicates that the weather varies less in the year.
Southern Europe experiences a 22-year cycle in rainfall variation. Other smaller term cycles are seen at 10-12 year and 6-7 year periods within the rainfall record. [40] Places with significant impact by acid rain across the continent include most of eastern Europe from Poland northward into Scandinavia. [41]
Christopher C. Burt, a weather historian writing for Weather Underground, believes that the 1913 Death Valley reading is "a myth", and is at least 2.2 or 2.8 °C (4 or 5 °F) too high. [13] Burt proposes that the highest reliably recorded temperature on Earth could still be at Death Valley, but is instead 54.0 °C (129.2 °F) recorded on 30 ...
Two-dimensional streamlines based on wind speeds at various levels show areas of convergence and divergence in the wind field, which are helpful in determining the location of features within the wind pattern. A popular type of surface weather map is the surface weather analysis, which plots isobars to depict areas of high pressure and low ...
An image of the Gulf Stream's path and its related branches The average number of days per year with precipitation The average amount of sunshine yearly (hours). The climate of western Europe is strongly conditioned by the Gulf Stream, which keeps mild air (for the latitude) over Northwestern Europe in the winter months, especially in Ireland, the United Kingdom and coastal Norway.
Summer is the time of the second rainfall maximum during the year across Georgia, and the time of the main rainfall maximum in Florida. [46] [49] During the late summer and fall, tropical cyclones move into the region from the Atlantic and Gulf of Mexico, supplying portions of the area with one-quarter of their annual rainfall, on average.
At least ten times as much rain in the wettest month of summer as in the driest month of winter. Dwb = Monsoon-influenced warm-summer humid continental climate; coldest month averaging below 0 °C (32 °F) (or −3 °C (27 °F)), all months with average temperatures below 22 °C (71.6 °F), and at least four months averaging above 10 °C (50 °F).
The 2013 extreme weather events included several all-time temperature records in Northern and Southern Hemisphere. The February extent of snow cover in Eurasia and North America was above average, while the extent of Arctic ice in the same month was 4.5% below the 1981–2010 average. [ 1 ]