antarctic ozone hole"A phenomenon discovered in the mid-1980s that occurs in the winter-spring lower stratosphere over Antarctica.
Antarctic ozone hole A large area of significant stratospheric ozone depletion over the Antarctic continent that typically develops annually between late August and early October, and generally ends in mid-November.
Antarctic Air
Mass of air from the Antarctic Continent which is very cold in the lower levels.
Antarctic Ozone Hole: An extended area of extreme depletion of the ozone layerwhich forms over the southern polar region each austral spring (September through November).
ANTARCTIC
Of or relating to the area around the geographic South Pole, from 90? South to the Antarctic Circle at approximately 66 1/2?South latitude, including the continent of Antarctica.
Antarctic Glaciological Data Center
Arctic System Science Data Coordination Center
IARC Frozen Ground Data Center
International Polar Year Data & Information Service (IPYDIS)
NOAA at NSIDC ...
Antarctic Front: Front that develops and persists around the Antarctic Continent, approximately between latitudes 60º and 65ºS, and separates the Antarctic Air Mass from the Maritime Polar Air Mass (Pm) further to the north.
West of the Antarctic Peninsula, the Ross, Bellingshausen, and Amundsen Sea sectors have more sea ice during El Niño. The latter two and the Weddell Sea also become warmer and have higher atmospheric pressure.
The British Antarctic Survey first revealed the obvious decreases in ozone in the late 1970s to early 1980s. The Japanese station at Syowa also reported decreases in ozone.
When does the ozone hole occur?
West Antarctic Ice Sheet See ice sheet. wetlands An area that is regularly saturated by surface water or groundwater and subsequently is characterized by a prevalence of vegetation that is adapted for life in saturated-soil ...
Ozone holeA thinning of the ozone layer over Antarctica, which occurs each spring.Partly cloudySky condition when between 3/10ths and 7/10ths of the sky is covered. Used more frequently at night.
When these products break down they destroy stratospheric ozone, creating the Antarctic Ozone Hole in the Southern Hemisphere spring (Northern Hemisphere autumn).
TEMPERATE CLIMATE Climates with distinct winter and summer seasons, typical of regions found between the Tropics of Cancer and Capricorn and the Arctic and Antarctic Circles. Considered the climate of the middle latitudes.
OZONE: Antarctic Ozone Hole expands in winter shrinks in summer. 3. OZONE: Been measured by the British since 1956. 4. OZONE: Concentration in stratosphere remains constant. 5. Ozone: Contains 3 Oxygen atoms (O3). 6.
Ozone Hole A large area of intense stratospheric ozone depletion over the Antarctic continent that typically occurs annually between late August and early October, and generally ends in mid- November.
In this system, air masses are designated first according to the thermal properties of their source regions: tropical (T); polar (P); and less frequently, arctic or antarctic (A).
He documented expeditions to Antarctica, Greenland, the Yukon, Tierra del Fuego and southern Chile. The Nordenskjold line is used to estimate the arctic tree line, which denotes the boundary between the Boreal forest and tundra.
A severe depletion of stratospheric ozone over Antarctica that occurs each spring. The possibility exists that a hole could form over the Arctic as well.
POLAR LOW - A small but intense vortex that develops at very high - near arctic (or low - near antarctic) latitudes as relativly cold air passes over warmer water.
A thinning of the ozone layer over Antarctica and beyond which occurs each spring.
Polar Air
A mass of very cold, very dry air that forms in Polar Regions.
However, katabatic winds might also reach gale force as an outblowing wind over ice-covered surfaces in Antarctica and Greenland, where the wind may be extremely strong and gusty near the coasts and less severe in mountain regions.
Polar Vortex A circumpolar wind circulation which isolates the Antarctic continent during the cold Southern Hemisphere winter.
During the 2nd Byrd Expedition to Antarctica in 1939-40, Siple exposed water-filled plastic cylinders to various temperatures and wind speeds. He then recorded the time that it took for the water to freeze in the cylinders.
The system most commonly used classifies air masses primarily according to the thermal properties of their source regions: “tropical' (T); “polar' (P); and “Arctic' or “Antarctic' (A).
Diamond dust can also produce a range of halo effects around the sun and moon. Diamond dust forms at temperatures below -30C and is most common over the high antarctic plateau and parts of Canada and Siberia.
A climate that has no monthly means above freezing and supports no vegetative cover except in a few scattered high mountain areas. This climate, with its perpetual ice and snow, is confined largely to the ice sheets of Greenland and Antarctica.
In the Northern Hemisphere, this "belt" consists of the Aleutian low in the North Pacific and the Icelandic low in the North Atlantic. In the Southern Hemisphere, it exists around the periphery of the Antarctic continent.
 See also: Arctic, High, Radiation, Center, Stratus
  
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