Chapter 401

After coming out of the k-3018 prehistoric biology laboratory, people began to get to the point. People from the Bureau of land management and a large group of "national teams" came to matrix technology headquarters, not to visit the zoo.

Half an hour later, Ren Hong arranged for everyone to come to a meeting room to discuss how to transform the 330000 square kilometer Taklimakan Desert.

In the conference room, a group of scientists, the land administration bureau, Kang Tao and others were sitting at the table, while Ren Hong was in front of a huge spotlight screen in front of the conference, which showed the topographic map of the western region of the country, and the Tarim Basin was in the center of the screen.

"A project to transform this piece of the world's second largest mobile desert." Ren Hong looked at everyone. He looked back at the screen and said, "we have to start from the aspect of climate. Tarim Basin is a typical continental monsoon climate, drought!"

"If you want to transform, you have to start from the root cause. The Taklimakan Desert had accumulated sand in the Cretaceous, and it was not until the Cenozoic that it evolved into today's great desert. The typical reason is the topography and structure of Western China. Tarim Basin is surrounded by mountains, with Tianshan Mountains in the north and Pamir Plateau in the West. The most important reason is the double isolation of Himalayas and Kunlun Mountains in the south. In addition, Southeast China is the highest plateau in the world, which makes it impossible for water vapor from the Indian Ocean to enter Tarim In the basin, the Pamir Plateau in the West blocks the moist ocean current, and the southeast monsoon and southwest monsoon cannot blow into the Tarim Basin... "

Ren Hong pointed to the map and said: "the plateau and mountains also block the hot and dry westerly flow in Central Asia to the north, which is undoubtedly adding fuel to the fire. The dry westerly winds in Central Asia can not disperse here. The Tarim Basin is surrounded by several kilometers of mountains and plateaus, and the humid water vapor in multiple directions is blocked out. The most lethal is the coordinate area of the Tarim Basin Not yet in the monsoon region, the arid and violent westerly winds in Central Asia have been controlling the land, leading directly to the formation of the Taklimakan Desert

A meteorologist at the forefront also began to speak. He said: "with regard to the water vapor transport in the southern territory, my investigation team has carried out long-term field investigation in recent years. After investigation and observation for many years, we have obtained some results. We believe that the water vapor source problem in Taklimakan is basically the mainstream system of external circulation Because of the weather evolution, rather than the internal circulation of the Tarim Basin, the Tarim Basin is surrounded by high mountains and plateaus, and the water vapor transport in the middle and lower layers is very little or even almost zero. "

"A series of studies have found that the vertical transport of water vapor is relatively abundant. In the region where the Tarim Basin is located, the horizontal vertical transport of the atmosphere in the middle and low-level airspace is reduced. When the convective cloud layer moves slowly in summer, the vertical water vapor transport is greatly increased. Our study found that the vertical convection is very strong in the Tarim Basin, especially in summer. Unfortunately, although the vertical convection is strong, the vertical upward effect is also very strong. The humidity of the surface layer in the Tarim Basin is very small, so small that it can almost reach zero index, and the water vapor transport volume is reduced indirectly

Ren Hong nodded silently, and the meteorologist continued: "but it is worth mentioning that on the contrary, the horizontal transport volume in the middle and lower layers of the region is very large, which is often the horizontal output of water vapor under the influence of the external monsoon. In theory, this will often produce a large number of rainstorms, such as the heavy rain on July 23, 1988 It's an invasion. "

"As far as I know, that heavy rain was a special case." Ren Hong immediately turned around to expand the map to the whole of Asia. He looked at the screen and said, "the heavy rainfall in 1988 was caused by the eastward advancement of the European high ridge. The trough from West Siberia to Central Asia in the North blocked the eastward movement of the vortex. In addition, due to the splitting of the subtropical high in Iran, the plateau area in the southeast was in the subtropical trough Before the vortex intrusion, there is a short-term wave trough affected by it, resulting in a large amount of precipitation

Ren Hong looked back at the meteorologist and other people, and said, "the water vapor transport in Taklimakan comes from four directions: moving, West, South and North, mainly in the West and the north. In summer, the water vapor from the East and South can enter the Taklimakan area. However, although the precipitation in July 1988 was as high as 45mm, it was only a good thing In case of unexpected accidents. "

"It is true that the precipitation in the Taklimakan area is not a small number, generally about 50-60mm, but it is basically located in the high mountain area. The most typical area is the northern slope of Kunlun Mountain, which has a large evaporation capacity. The water that really falls to the ground will quickly infiltrate into the soil layer and be evaporated." He looked back at the map and said, "anyway, fundamentally speaking, the climate problem of vertical transport of high convection in the Taklimakan desert is not helping to change the local desert climate."

"What's Mr. Ren's opinion on this? Or the solution? " Asked the meteorologist.

On hearing the speech, Ren Hong was silent for a moment, then organized his words in his mind, and then said: "the problem of the Tarim Basin is surrounded by mountains on all sides, which is affected by the geographical characteristics of high mountains and plateaus. The external circulation of climate can not directly affect the internal climate of the Tarim Basin.""The solution to the problem lies in the problem itself." Ren Hong said so, which made a crowd of experts present curious.

"A lot of things, they will be able to solve their problems, or weaknesses disguised as strong, and thus ignored." Ren Hong said that this sentence undoubtedly puzzled people, but he did not ask questions. Obviously, Ren Hong did not finish. For a moment, he continued: "the core factor causing the current climate in Taklimakan is the geographical characteristics, and the answer to the problem is here."

"How do you say that?" The meteorologists in the front row are very different.

Looking at the map on the screen again, Ren Hong said, "look at the geographical features of the Tarim Basin, surrounded by mountains and plateaus on all sides, Tianshan Mountains in the north, Pamir Plateau in the west, Qinghai Tibet Plateau in the southeast, and Himalayas and Kunlun Mountains in the south. The influence of external circulation climate on it can be ignored, and the surrounding mountains make the internal air and wind unable to go north, This series of factors make the Tarim Basin have the characteristics of internal circulation

Ren Hong looked at all humanity again: "the solution to the problem is to form a relatively humid internal circulation climate in the middle and low-level airspace of the Tarim Basin, independent of the external climate cycle, in short..."

"Our starting point is on the issue of internal circulation."

(to be continued) www.novelhold.com , the fastest update of the webnovel!