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Posts tagged Atlantic Ocean

Climate Change Risks for Madeira Archipelago

32.7N 16.9W

June 25th, 2013 Category: Climate Change VIIRSSuomi-NPP

Canada – June 25th, 2013

Climate change can have severe effects on the natural environment, including water resources and ecosystems. Islands are unique systems more vulnerable to climate change than continental areas. Madeira, an Atlantic subtropical island (image center), has a quite unique flora and fauna and is considered a biodiversity ‘hot-spot’.

The lower altitudes of Madeira are predominantly occupied by urban areas and agricultural crops; exotic forest plantations are widespread at low- to mid-altitudes. The native forest, Laurissilva, an extremely important and rare ecosystem, occurs up to 1450 m and is replaced in higher altitudes by heaths and other altitude vegetation.

Future climatic scenarios project reduced rainfall and higher average temperatures across Madeira. The potentially suitable area for the main agricultural crops is expected to expand in altitude. Suitable area for the exotic forests and the Laurissilva is expected to increase as the expansion in altitude will be greater than the retraction in lower reaches.

The suitable climatic range for heaths will suffer a severe reduction: it is expected to retract in lower reaches but cannot expand in altitude because it is predominantly in the higher elevations already. These shifts in habitat distributions may translate into large changes in ecosystem services supply. Altitude species, including endemic and rare ones, may suffer range reductions or even disappear (click here for more information).

Golden Sands Over the Atlantic Ocean

18.4N 18.1W

June 4th, 2013 Category: Dust Storms MODISTerra

West Africa – June 1st, 2013

A golden plume of dust spreads westward over the Atlantic Ocean, intermingled with cloud-cover. The plume blows off the coast of West Africa around the Mauritania-Senegal border, creating a yellowish veil over the mouth of the Senegal River (marking the border between the two countries) and the Bay of Arguin (in Mauritania, to the north).

Sediments Framing Florida, USA

29.1N 83.5W

November 4th, 2012 Category: Sediments

USA – October 29th, 2012

Florida has the longest coastline in the contiguous United States, encompassing approximately 1,350 miles (2,170 km), and is the only state to border both the Gulf of Mexico (left) and the Atlantic Ocean (right). Much of the state is at or near sea level and its terrain is characterized by sedimentary soils. Here, sediments can be seen along the shoreline, particularly on the western side.

Phytoplankton Bloom Off Argentine Coast

43.8S 63.4W

October 31st, 2012 Category: Phytoplankton

Argentina – October 28th, 2012

East of Argentina, a phytoplankton bloom stretches across roughly 300 kilometers (175 miles) of the South Atlantic Ocean. Visible northwest of the bloom is the Valdés Peninsula, and further north, Bahía Blanca. Such blooms are common off Argentina’s coast, particularly as the spring season brings increased expore to sunlight, as the Malvinas (Falkland) Current flows northward along Argentina’s continental shelf and winds promote upwellings that bring nutrients to the surface.

Phytoplankton Bloom Between Valdés Peninsula and San Jorge Gulf, Argentina

44.1S 64.7W

October 29th, 2012 Category: Phytoplankton

Argentina – October 28th, 2012

A brilliant green and blue phytoplankton bloom graces the waters off the coast of Argentina. The differences in color are likely due to different species of phytoplankton. The plume is located in the waters of the Atlantic Ocean southeast of the Valdés Peninsula and northeast of the San Jorge Gulf.