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Posts tagged Northern Australia

Fires Near Coast of Arnhem Land, Australia

13.1S 134.7E

August 4th, 2012 Category: Fires, Sediments

Australia- August 3rd, 2012

Plumes of smoke from fires in Arnhem Land, Northern Australia, blow towards the west-southwest. While most of the fires are clustered just left of the center of the image, a plume of smoke can be seen near the coast at the upper left. The coast is lined by sediments, particularly in the lower right quadrant opposite the island of Groote Eylandt.

Fires in Northern Australia Near Van Diemen and Joseph Bonaparte Gulf – August 3rd, 2012

13.3S 130.3E

August 3rd, 2012 Category: Fires, Image of the day

Australia- August 3rd, 2012

Smoke from fires in Northern Australia blows in a northwesterly direction, towards the coast. Visible at the top right is Van Diemen Gulf, in which sediments can be seen streaming outward from the coast, carried by ocean currents. At the bottom left, sediments can also be seen filling the southern part of the Joseph Bonaparte Gulf.

Thick Plumes of Smoke at Start of Northern Australia Bushfire Season – June 28th, 2012

12.4S 131.7E

June 28th, 2012 Category: Fires, Image of the day

Australia – June 26th, 2012

The 2012 northern Australia bushfire season has gotten off to an intense start, as can be observed from the many thick plumes of smoke visible here, in the country’s Northern Territory. Most of the plumes are blowing towards the northwest, although shifting winds are carrying a few towards the west-southwest.

Winter is northern Australia’s fire season due to the drying out of summer grasses and lack of rainfall. This, combined with warm temperatures, dry winds and low humidity makes conditions ripe for the start and spread of fires. Also of note in this image are sediments along the coastline, particularly in the Van Diemen Gulf, between the mainland and the large Melville Island.

Coastal Region of Northern Australia as Seen by FAPAR

11.5S 131.1E

December 1st, 2009 Category: Climate Change, Lakes

Australia - November 18th, 2009

Australia - November 18th, 2009

Despite its rather arid interior zones, the coast of Australia’s Northern Territory shows a higher vegetation index in this FAPAR image. FAPAR, or Fraction of Absorbed Photosynthetically Active Radiation, corresponds to the vegetation index of a given area.

In FAPAR images, the color spectrum over land runs from red (1.0), to green, to yellow and white (0.0), while bodies of water,  such as Lake Argyle (left), appear blue.

This image contains no areas of high photosynthetic activity, although the green areas along the coast and on Melville Island (above) indicate mid-range values. Moving southward towards Australia’s arid interior, the values decrease from 0.2 (yellow) to 0.0 (white), indicating little to no photosynthetic activity.