Tags: autumn (100 pics) Autumn (also known as fall in American English) is one of the four temperate seasons. Autumn marks the transition from summer into winter, usually in Mar. (Southern Hemisphere) or sep. (Northern Hemisphere) when the arrival of night becomes noticeably earlier. The equinoxes might be expected to be in the middle of their seasons, but temperature lag (caused by the thermal latency of the ground and sea) means that seasons appear later than dates calculated from a purely astronomical perspective. The actual lag varies with region, so some cultures regard the autumnal equinox as "mid-autumn" whilst others treat it as the start of autumn (as shown in the above table). Autumn starts on or around 8 Aug. and ends on about 7 Nov. in traditional East Asian solar term. In Ireland, the autumn months according to the national meteorological service, Met Éireann, are September, Oct. and November. However, according to the Irish Calendar which is based on ancient Celtic traditions, autumn lasts throughout the months of August, September, and October, or possibly a few days later, depending on tradition. In Australia autumn officially begins on 1 Mar. and ends 31 May. The vast diversity of the ecological zones of the Australian continent renders the rigid American seasonal calendar an imposed cultural concept rather than relevant to climactic conditions. The seasonal cycles as named and described by the various indigenous Aboriginal peoples of Australia differ substantially from one another according to their local geographical and ecological environment and are intricately dependent on local environmental events and resources.

Navigation Previous picture Back to gallery Next picture View in fullscreen Customize this wallpaper Rate this picture Click on the star to vote Download 1024x768 1024x1024 - iPad 1152x864 - widescreen 1280x720 - 720p HD 1280x800 - widescreen 1280x960 1280x1024 1440x900 - widescreen 1440x1080 - 1080i HD 1600x900 1600x1200 1680x1050 - widescreen 1920x1080 - 1080p HD 1920x1200 - widescreen 1920x1440 - widescreen Use this wallpaper Set this wallpaper as homepage Comments

Users who have seen this wallpaper have also seen:

False Kiva, Canyonlands National Park, Utah

Black and White Lily

Saint Mary's Lake At Sunrise, Glacier National Park, Montana

Trolltunga, Odda, Norway

Coral Underwater Landscape

Random Nature pictures

Sunset

Gnarled Tree, Matia Island, San Juan Islands, Washington

Emerald Lake

Winter Forest Fire

Wood Lake

Request deletion of this wallpaper

Claim ownership of this picture