when does winter occur in the northern hemisphere
Winter Meteorological Reckoning is the method of measuring the winter season used by meteorologists based on "sensible weather patterns" for record keeping purposes,[5] so the start of meteorological winter varies with latitude.[6] Winter is often defined by meteorologists to be the three calendar months with the lowest average temperatures. This corresponds to the months of December, January and February in the Northern Hemisphere, and June, July and August in the Southern Hemisphere. The coldest average temperatures of the season are typically experienced in January or February in the Northern Hemisphere and in June, July or August in the Southern Hemisphere. Nighttime predominates in the winter season, and in some regions winter has the highest rate of precipitation as well as prolonged dampness because of permanent snow cover or high precipitation rates coupled with low temperatures, precluding evaporation. Blizzards often develop and cause many transportation delays. Diamond dust, also known as ice needles or ice crystals, forms at temperatures approaching −40 °F (−40 °C) due to air with slightly higher moisture from aloft mixing with colder, surface based air.[7] They are made of simple ice crystals that are hexagonal in shape.[8] The Swedish meteorological institute (SMHI) define winter as when the daily mean temperatures go below 0 °C (32 °F) for five consecutive days.[9] According to the SMHI, winter in Scandinavia is more pronounced when Atlantic low–pressure systems take more southerly and northerly routes, leaving the path open for high–pressure systems to come in and cold temperatures to occur. As a result, the coldest January on record in 1987 was also the sunniest in Stockholm.[10][11]
Babylon Babylon (
Midnight sun The midnight sun is a natural phenomenon that occurs in the summer months in places north of the Arctic Circle or south of the Antarctic Circle, when the sun remains visible at the local midnight.
Season of Migration to the North The unnamed narrator has returned to his native village in the Sudan after seven years in England furthering his education. It is the 1960s, and he is eager to make a contribution to the new postcolonial life of his country.[4]