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Posts tagged Peru

Climate Change’s Impacts on Lake Poopó, Bolivia: Reduced Area and Biodiversity – July 1st, 2013

18.7S 67W

July 1st, 2013 Category: Climate Change, Image of the day, Lakes, Salt Flats VIIRSSuomi-NPP

Bolivia – June 28th, 2013

Visible high on the Bolivian altiplano are the green waters of Lake Poopó and the bright white surface of the Salar de Uyuni. Lake Poopó’s area has decreased by 50% in the last 25 years, with serious consequences for the populations of resident and migratory waterbirds.

The lake is located at approximately 3700 m above sea level, covering an approximate area of 967,000 ha, making it the second biggest lake in Bolivia, after Lake Titicaca (visible in the upper part of the full image), which is shared with Peru. However, in only 25 years its area has decreased by about 17,400 ha, representing almost 50% of its total area.

The decrease in the wetland’s area of open water has been attributed principally to climate change, which, in conjunction with current hydrological conditions (high rates of evaporation, low rainfall, and low flow rates of the rivers flowing into the lake), mean that water levels in the lake are not rising. This has had serious impacts on the biodiversity which depends on the wetland, given that the salinity has increased, thus decreasing survival rates of some species, with subsequent consequences in the local economy.

The change in size of the wetland has represented a considerable loss of available habitat for migratory bird species, for which the lake represents an important habitat, especially during the dry season (May to September), coinciding with the southern winter. However, drastic decreases in the populations of these species have been detected since 2007. Preliminary results suggest that the reason for this decline is the loss of available habitat as a result of the reduced area of Lake Poopó, and the accumulation of solid waste around the shores of the lake (click here for more information).

 

Stunning White Salt Flats of the Salar de Uyuni, Bolivia – March 20th, 2013

20.1S 67.5W

March 20th, 2013 Category: Lakes, Salt Flats

Bolivia – March 20th, 2013

The bright white area in the lower part of this image is the salt flats of the Salar de Uyuni, in Bolivia. Salt pans occur in areas which would otherwise be lakes or ponds if the climate did not evaporate the water quicker than the rate of rainfall. The result if the liquid can’t drain is massive deposits of minerals.

The Uyuni salt flats stretch 6,500 miles, making them the biggest in the world. They are even larger than Lake Titicaca, the vast stretch of water shared by Bolivia and neighbouring Peru (visible in the upper part of the image). They are also so flat that NASA uses their surface to calibrate satellite orbits.

New Borders Feature in Action – January 27th, 2013 – EOSnap Celebrates its 6000th Post!

22.5N 31.7E

January 27th, 2013 Category: Clouds, Image of the day, Lakes

Egypt and Sudan – January 26th, 2013

Bolivia and Peru – January 26th, 2013

Mozambique – January 26th, 2013

USA – January 26th, 2013

Egypt, without borders

EOSnap celebrates our 6000th post by focusing on the new “borders” feature of the Chelys Satellite Rapid Response System (SRRS). The feature allows users to download satellite images that show not only a true, traditional view of the terrain below, but also the borders of countries. The feature is particularly useful for seeing the outline of land despite cloudcover. It can also be used to show the location of lakes.

In the main image, the border between Egypt and Sudan is clearly visible as a horizontal line. The contours of Lake Nasser, which would otherwise be invisible except for its southern tip due to heavy cloud cover (see thumbnail image “Egypt, without borders” for a look at the original, borderless image), are easily distinguishable, highlighted in blue. The thumbnail image of Mozambique shows the country’s shoreline despite an area of convection, in this case a potential area of cyclone formation, looming over the coast. The thumbnail image of Bolivia and Peru focuses on Lake Titicaca, and clearly shows where the lake is divided between the two countries. The thumbnail image of southern USA, in addition to sediments from the Mississippi River, shows the border between Louisiana (right) and Texas (left), as well as the Toledo Bend Reservoir, despite the thick clouds covering the upper half of the image.

Smoky Haze Over Brazil and Peru

9.6S 74.5W

October 1st, 2012 Category: Fires

Brazil and Peru – August 31st, 2012

Smoke from fires in Brazil and Bolivia blows westward and creates a haze over the rainforest near the right edge of this image. Some smoke can also be seen nestled along the Andes Mountains in Peru, on the left side of the image.

Smoke East of Andes, Over Peru

9.1S 72W

September 18th, 2012 Category: Fires

Peru – September 5th, 2012

Smoke from fires in Brazil, Bolivia and Paraguay blows westward to the Andes Mountains. Here, the smoke can be seen blowing over the Brazilian state of Acre and hovering over Peru, prevented from reaching the coast by the crests of the Andes.

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