Ascension lies at latitude 7˚7’S and longitude 14˚22’W, 1,296 km
to the north west of the nearest land – the island of St. Helena.
The nearest continental land Liberia 1,504km to the NNE
Size
97 sq km
Climate
The climate of Ascension is dry, tropical and oceanic with
little seasonal change. Temperatures vary from 31˚C to 27˚C.
moderated by the South East Trade winds. Rainfall is variable but
showers fall throughout the year.
Topography
The island is a rocky peak of volcanic origin with 44 distinct
craters. The lower slopes and western side are made up of volcanic
ash with little vegetation. Green Mountain, which rises to a height
of 859m at the centre of the island, is lush and green.
Biodiversity
Much of Ascension's global conservation importance comes from
the island's remoteness. It has 11 species of breeding seabird, one
of which, the Ascension Island Frigate Bird (Fregata Aquila) is
endemic. There are six endemic species of terrestrial plants, nine
endemic marine fish and two endemic shellfish. The island also has
one of the most important breeding Green Turtle (Chelonia mydas)
populations in the world.
Main economic activities
Ascension has a USAF and RAF military base and hosts a number of
communication companies.
Other information
Civilians are contracted from St, Helena, UK and USA these
number approximately 1,000 (estimate).
Information links
JNCC has prepared a series of outreach materials which
give a general background to climate change and includes territory
specific information on climate
change impacts.