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Posts tagged Lake Nasser

Climate Change and the Nile Basin, Egypt

22.5N 31.7E

April 28th, 2013 Category: Climate Change, Rivers

Egypt – April 28th, 2013

The thumbnail image shows Lake Nasser, a reservoir on the Nile River on the border of Sudan (below) and Egypt (above). In the full image, the upper course of the Nile to its delta on the Mediterranean can be observed.

Scientists studying the effects of climate change on the Nile River estimate that the expected change in precipitation over the Blue Nile until 2030 will range from –2.15% to 10.65%, while that over the White Nile basin will range from –0.61% to 8%. Over the whole Nile, the range of temperature changes varies from 0.21 to 0.82 degrees at the highest, while the precipitation changes range from –1.43% to 9.94% at the highest (click here for more information).

Nile Delta, Egypt, Threatened by Global Warming – March 21st, 2013

30.0N 31.2E

March 21st, 2013 Category: Climate Change, Image of the day, Lakes, Rivers

Egypt – March 20th, 2013

Millions of Egyptians could be forced permanently from their homes, the country’s ability to feed itself devastated. That’s what likely awaits this already impoverished and overpopulated nation by the end of the century, if predictions about climate change hold true. The World Bank describes Egypt as particularly vulnerable to the effects of global warming, saying it faces potentially “catastrophic” consequences.

A big reason is the vulnerability of Egypt’s breadbasket — the Nile Delta, a fan-shaped area of rich, arable land where the Nile River spreads out and drains into the Mediterranean Sea. Although the Delta makes up only 2.5% of Egypt’s land mass, it is home to more than a third of this largely desert country’s 80 million people.

The Delta was already in danger, threatened by the side effects of southern Egypt’s Aswan Dam (the main reservoir created by the dam, Lake Nasser, is visible by the bottom of the full image). Though the dam, completed in 1970, generates much-needed electricity and controls Nile River flooding, it also keeps nutrient sediment from replenishing the eroding Delta. Here, some sediment can be seen along the delta coast.

Add climate change to the mix, and the Delta faces new uncertainties that could have a potentially more devastating effect on Egypt. Scientists generally predict that the Mediterranean, and the world’s other seas, will rise between one foot (30 centimeters) and 3.3 feet (one meter) by the end of the century, flooding coastal areas along the Delta.

A rise of 3.3 feet (one meter) would flood a quarter of the Delta, forcing about 10.5% of Egypt’s population from their homes, according to the World Bank. The impact would be all the more staggering if Egypt’s population, as expected, doubles to about 160 million by the middle of the century. The Delta is already densely packed with about 4,000 people per square mile (2.6 square kilometer). Also hit would be Egypt’s food supply. Nearly half of Egypt’s crops, including wheat, bananas and rice, are grown in the Delta (click here for more information).

 

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.

Contours of Lake Nasser, Egypt and Sudan

22.5N 31.7E

November 17th, 2012 Category: Lakes, Rivers

Egypt – November 16th, 2012

Lake Nasser is a vast reservoir on the Nile River in southern Egypt and northern Sudan. Strictly, “Lake Nasser” refers only to the much larger portion of the lake that is in Egyptian territory (83% of the total), with the Sudanese preferring to call their smaller body of water Lake Nubia. Here, the Sudanese part appears greenish due to sediments and algae, while the Egyptian part appears dark blue.

It is one of the largest man-made lakes in the world. The lake is some 550 km long and 35 km across at its widest point, which is near the Tropic of Cancer. It covers a total surface area of 5,250 km² and has a storage capacity of some 157 km³ of water. The area of Sudan-administered Wadi Halfa Salient was largely flooded by Lake Nasser. Visible near the left edge are the Toshka Lakes, created by overflow.

Plume of Dust Blowing Over Sudan and Red Sea

19.7N 36.4E

June 27th, 2012 Category: Dust Storms, Lakes, Rivers

Dust by Red Sea – June 26th, 2012

A plume of dust blows out over the Red Sea, extending from near the Sudan-Egypt border, to the coast of Sudan, across the Red Sea and over to the Saudi Arabia. In the full image, the Nile River can be seen flowing through Lake Nasser, on the Sudan-Egypt border, northwards towards its delta on the Mediterranean Sea.

The plume was thick enough to hide much of the water surface below. A network of rivers stretches over much of eastern Sudan, and the fine sediments from these waterways might have contributed to the plume over the Red Sea. Some of the dust might also have originated farther inland.

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