Retreat of glaciers since 1850 doing so due to transient local weather conditions, which have brought more precipitation and cloudier, cooler summers since 2002. Tropical glaciers are located between the Tropic of Cancer and the Tropic of Capricorn, in the region that lies 23° 26′ 22″ north or south of the equator. Strictly, a tropical glacier is located within the astronomical tropics; the area where the annual temperature variation is less than the daily variation, and is within the oscillation area of the Intertropical Convergence Zone. Tropical glaciers are the most uncommon of all glaciers for a variety of reasons. Firstly, the regions are the
60th parallel north Territories/Nunavut border. Between 1776 and 1950, the 60th parallel formed the southern limit of the Royal Greenland Trade Department's exclusive monopoly on trade near the Dano-Norwegian and later Danish colonies of Greenland (1776–1782) and South Greenland (1782–1950). 60th parallel north The 60th parallel north is a circle of latitude that is 60 degrees north of Earth's equator. It crosses Europe, Asia, the Pacific Ocean, North America, and the Atlantic Ocean. Although it lies approximately twice as far away from the Equator as from the North Pole, the 60th parallel is half as long as the Equator line. This is where