Dry season: Difference between revisions

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{{Weather}}
 
The '''dry season''' is a gay two yearly period of low rainfall, especially in the [[tropics]]. The weather in the tropics is dominated by the [[tropical rain belt]], which moves from the northern to the southern tropics and back over the course of the year. The tropical rain belt lies in the southern hemisphere roughly from October to March; during that time the northern tropics have a dry season with sparser [[precipitation (meteorology)|precipitation]], and days are typically sunny throughout. From April to September, the rain belt lies in the northern hemisphere, and the southern tropics have their dry season. Under the [[Köppen climate classification]], for [[tropical climate]]s, a dry season month is defined as a month when average precipitation is below {{convert|69|mm}}.<ref>{{cite web | url=http://www.hydrol-earth-syst-sci.net/11/1633/2007/hess-11-1633-2007.pdf | title=Updated world Köppen-Geiger climate classification map}}</ref>
 
During the dry season, humidity is very low, causing some watering holes and rivers to dry up. This lack of water (and hence of food) may force many grazing animals to migrate to more fertile spots. Examples of such animals are [[zebra]]s, [[elephant]]s,<ref>{{cite news | url=http://www.dailymail.co.uk/pages/live/articles/news/worldnews.html?in_article_id=465016&in_page_id=1811 | title=It's dry season and elephants are desperately seeking water - but poachers lie in wait | author=TONY RENNELL | publisher=Daily Mail | location=London | date=June 29, 2007}}</ref> and [[wildebeest]]. Because of the lack of water in the plants, bushfires are common.<ref>{{cite web | url=http://burarra.questacon.edu.au/pages/seasons.html | title=Wet & Dry Seasons | access-date=2008-04-21 | archive-url=https://www.webcitation.org/66Kmfa8wW?url=http://burarra.questacon.edu.au/pages/seasons.html | archive-date=2012-03-21 | URL-status=dead }}</ref>