Back خط طول 100° غرب Arabic 100-тен западен меридиан Bulgarian Meridià 100 a l'oest Catalan 100. vestlige længdekreds Danish Meridiano 100 oeste Spanish نصفالنهار ۱۰۰ درجه غربی Persian 100e méridien ouest French 100 रेखांश पश्चिम Hindi Meridian barat ke-100 ID Maika-100 a meridiano laud ILO
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100°
100th meridian west
The meridian 100° west of the Prime Meridian of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole. The 100th meridian west forms a great circle with the 80th meridian east.
In the United States, this meridian roughly marks the boundary between the semi-arid climate in the west and the humid continental and humid subtropical climates in the east and is used as shorthand to refer to that arid-humid boundary.