Antarctica:
severe low temperatures vary with latitude, elevation,
and distance from the ocean; East Antarctica is colder than West
Antarctica because of its higher elevation; Antarctic Peninsula has
the most moderate climate; higher temperatures occur in January
along the coast and average slightly below freezing

Antigua and Barbuda:
tropical marine; little seasonal temperature
variation

Arctic Ocean:
polar climate characterized by persistent cold and
relatively narrow annual temperature ranges; winters characterized
by continuous darkness, cold and stable weather conditions, and
clear skies; summers characterized by continuous daylight, damp and
foggy weather, and weak cyclones with rain or snow

Argentina:
mostly temperate; arid in southeast; subantarctic in
southwest

Armenia:
highland continental, hot summers, cold winters

Aruba:
tropical marine; little seasonal temperature variation

Ashmore and Cartier Islands:
tropical

Atlantic Ocean:
tropical cyclones (hurricanes) develop off the coast
of Africa near Cape Verde and move westward into the Caribbean Sea;
hurricanes can occur from May to December, but are most frequent
from August to November

Australia:
generally arid to semiarid; temperate in south and east;
tropical in north

Austria:
temperate; continental, cloudy; cold winters with frequent
rain in lowlands and snow in mountains; cool summers with occasional
showers