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
Half and half sell many of their tied public houses and McEwan's Scotch and IPA disappeared from public bars across the North East. In Canada and the United States, capitalized "Half & Half" is Guinness draught and Bass Pale Ale. A lower case "half & half" is a generic Guinness draught. Black and Tan is any lager or ale that will support the Guinness draught, although some Irish-themed bars shun the term for its association with the Black and Tans. In the U.S., the terms (Half and Half, Black and Tan, etc.) are not actually interchangeable. All of the versions start with Guinness