Why is the touch of green growing in the chest of Usar desert?
Icon International Desk
Published: 03 Oct 2024, 01:33 pm

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Why is the touch of green growing in the chest of Usar desert?
A touch of green in the heart of the Sahara desert. Photo: Collected

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The touch of green is increasing day by day in the upper Sahara desert! Patches of green fall on the warm brown body of the vast African desert. Vegetation is increasing in the world's driest regions.

Some of the scenes captured by NASA's satellite images recently; What scientists were surprised to see. The artificial satellite has shown the lush greenery of the Sahara desert in front of everyone. Many were shocked to see such a scene in one of the driest and harshest places in the world.

All around is dusty desert. Only sand and sand as far as the eye can see. Even if you look far and wide, it is difficult to find traces of water in the heart of the desert. Images captured by NASA's satellite cameras in September showed the almost dry lakes filled with stagnant water in just one month. Sahara lakes are usually dry. Most of the lakes do not even have a trace of water.

What is the reason for the existence of so much greenery in this barren, lifeless sand desert? What is hidden behind this paradoxical behavior of nature? Vole changed the Sahara desert in a strange behavior of nature?

Behind this changing shape of the Sahara is a cyclone. Because of which the image of a part of the Sahara has changed. According to the American space research agency NASA, it rained in the northwestern part of the Sahara desert on September 7 and 8 due to an extra tropical cyclone.

The outbreak of the extratropical cyclone caused heavy rains in early September across large areas of the Sahara desert. And that's what the scientists said actually caused the explosion of green.

Between July and September each year, rainfall increases north of the equator in Africa under the influence of the monsoon. As the Earth warms, the boundary of the Intertropical Convergence Zone moves northward.

Kirsten Haustein, a climate researcher at the University of Leipzig in Germany, said the boundary had moved further north than usual this year. So the Sahara is becoming two to six times wetter than normal. In addition, the transition from El Niño (change in warm ocean currents) to La Niño (natural disasters such as floods and droughts) has an effect on the whole world.

Rainfall in the Sahara has also increased as the track of monsoonal storms has changed. Even occasional floods are reported by meteorologists.

Areas that receive almost no rain, such as Morocco, Algeria, Tunisia and Libya, are on the verge of being virtually washed away.

Especially in those dry places of Morocco and Algeria, as much as it rains in a year, it has happened in two days, according to the news of the Meteorological Department. Rainfall has increased the most in parts of Chand, Sudan and Eritrea.

The northern part of Africa is the most rugged on earth. But this September it has rained five times more than other years. Flooding has also occurred in some places.

Scientists say that due to the use of fossil fuels, global warming is causing environmental changes. Sahara is also enjoying its fruits. Of course, the world's hottest desert has been cursed.

As the world warms, the Sahara will become greener day by day. An article published in Nature in June this year said that the climate of the Sahara will continue to change drastically in the next few decades. Climate researchers have expressed hope that the amount of greenery will increase in the Sahara.

Peter de Menocal, president of the Woodall Hole Oceanographic Institution, said heavy rains loosened the sand layer and released the soil. On that occasion, getting favorable environment, green plants grow up.

From 2500 BC, the monsoon began to move southwards, and the Sahara gradually turned into a desert due to the lack of rain.

However, farmers in Mali, Nigeria, Burkina Faso, and even East Africa have planted hundreds of millions of trees in the last three decades. The Sahara has largely been able to halt the progress of the desert.

Source: Anandabazar Patrika