Discussion about Cowin
In the general view of the mountaineering community, Qiyun has specific and general meaning referring specifically to the Qifeng Qiqi, the spring westerly winds moving northwards, and the strong winds blew up the accumulated snow from the top of the peaks, forming a long streamer-like streamer (INTO THIN). AIR also introduced)
Generally refers to the "blown snow", I can find the English word of the Cowin is "snowplume" "blowing the snow", a biased word, I hope my brother will have time to check. Steep peaks more than 7,000 meters can see, But there are big and small, small and far-sighted, they can't be called clouds.
When I got to Anima, I got windy when I climbed up (after three days of snowfall). The snow particles blowing from the ground made it hard to breathe. I was counting on my nostrils and drilling in my mouth.
The words of highly respected, I do not engage in weather, it is not really clear.
Copyright: -mh Original submission time: 15:53:59 March 01
The cloud top of Mount Everest is not unique to Mount Everest. Photos of the peaks and clouds in other mountains, similar to the bottom photos, are available in mountaineering data. The snow conditions are different, and the reasons for their formation are also different. At the peak of 8000m, the height of entrained snow in the stratospheric high-level wind (jetstream) in spring is an important cause of this cloud formation. Because this is the main season for climbing, most of the cloud formations seen in the photos of Mount Everest have been formed. At least, according to meteorological research, the international mountaineering community thinks so. But I haven't read specific articles on this phenomenon, so I don't rule out the possibility of rumor. If you know the specific study please inform.
In warmer seasons and warmer temperatures, the formation of the cloud-fog pattern in the peak-top streamers is basically what you say--the water vapor from the lower part of the sky rises after the leeward slope (caused by the negative pressure caused by the Bernoulli effect). In case of condensation, local leeward clouds are formed. For example see the home page of Matterhorn at peakware.com http://peakware.com/
I avoid the word "qiyun" here because I don't know the specific definition of this name. If it refers to the cloud and fog pattern of all the peaks on the mountain, the statement of vapor condensation is more comprehensive. If it is just referring to the top of Mount Everest, there is reason for saying that the high altitude wind and entrained snow cover.
Theme:snow plume is a snow finger
Copyright: -mh Original submission time: 11:35:15 03 02
The snow plume is a snow finger, but above the freezing point, there is no ground area. Snow is also there as "Cowin" as Dawa posted. For example, the bottom of this picture is entirely a cloud of water vapor. The reason why the clouds only appear in the direction of the leeward of the mountain is that after the air is raised (*), the originally invisible vapor condenses into droplets that can be seen when it is cooled to the dew point. These small droplets of leeward strap form the "qiyun". Once the water droplets are away from the top of the mountain, they will slowly evaporate and become invisible. The new water droplets are formed in the upwind direction, filling the position of the water droplets taken away by the wind. So this kind of cock is not moving as a whole, but you should pay attention to the clumps in the clouds. They are moving.
The lens-shaped clouds formed on the top of the mountain and behind the mountain in the windy days are similar to the cousins ​​in principle. There is a meteorological knowledge book. Snow plume is also often categorized as a phenomenon in mountaineering because they are signs of strong winds in the mountains.
(*) There are various reasons for elevation, such as the wind being lifted by the mountain during exercise, because of heat convection (altimeter), or because the air pressure at the top of the leeward side is less than the pressure of the air that is not flowing behind the bottom (Bernou The inner effect causes the air behind the mountain to flow to the top of the mountain.
Qiyun's claim is wrong - about the formation of the Cowin
Copyright: Altimeter Original submission time: 10:11:23 March 01
Today’s Beijing Youth Daily published an article on “The Cowin Companyâ€. The formation of the Cowin that Mr. Wang Bin mentioned in the article was that 10,000 meters of stratospheric winds lowered altitude over the Himalayas, blowing snow from the 8,000-meter peak. The statement is wrong.
Qiyun is the unique meteorological landscape of Mount Everest. In the area of ​​Mount Everest, 5-7 kilometers above sea level is snow-covered. In areas over 7 kilometers in length, due to the high winds, the slopes are steep and snowfall is not easy to accumulate. Therefore, most of them are bare gravel surfaces. Whenever the sun shines directly after sunrise, the nature of the ground surface is uneven and the state of heat is different. Ice and snow reflect more heat, and the temperature is lower than that of the free atmosphere. The gravel surface absorbs heat quickly and the temperature near the ground is much higher than the free atmosphere temperature. As the cold air sinks and the hot air rises, there will be local circulation with different directions. From 7 km to the top of the peak, a significant upward movement will be maintained. At places near the junction of ice and snow and crushed stone, some of the snow and ice surfaces are sublimated by heat, sending moisture to the updraft. In this way, both ascending movement and the source of water vapor make it easy to become a cloud. Together with the height of the top of Mount Everest, it is also close to the condensing height of the updraft of the area. Therefore, convective cumulus clouds often form at the top. When clouds were formed, they were blown by high winds. Clouds in the distance were blown away, but in the immediate vicinity they were left behind because of continuous cloud formation. With different winds, updrafts and weather systems, the appearance of the Cowin is also varied.
Generally refers to the "blown snow", I can find the English word of the Cowin is "snowplume" "blowing the snow", a biased word, I hope my brother will have time to check. Steep peaks more than 7,000 meters can see, But there are big and small, small and far-sighted, they can't be called clouds.
When I got to Anima, I got windy when I climbed up (after three days of snowfall). The snow particles blowing from the ground made it hard to breathe. I was counting on my nostrils and drilling in my mouth.
The words of highly respected, I do not engage in weather, it is not really clear.
Copyright: -mh Original submission time: 15:53:59 March 01
The cloud top of Mount Everest is not unique to Mount Everest. Photos of the peaks and clouds in other mountains, similar to the bottom photos, are available in mountaineering data. The snow conditions are different, and the reasons for their formation are also different. At the peak of 8000m, the height of entrained snow in the stratospheric high-level wind (jetstream) in spring is an important cause of this cloud formation. Because this is the main season for climbing, most of the cloud formations seen in the photos of Mount Everest have been formed. At least, according to meteorological research, the international mountaineering community thinks so. But I haven't read specific articles on this phenomenon, so I don't rule out the possibility of rumor. If you know the specific study please inform.
In warmer seasons and warmer temperatures, the formation of the cloud-fog pattern in the peak-top streamers is basically what you say--the water vapor from the lower part of the sky rises after the leeward slope (caused by the negative pressure caused by the Bernoulli effect). In case of condensation, local leeward clouds are formed. For example see the home page of Matterhorn at peakware.com http://peakware.com/
I avoid the word "qiyun" here because I don't know the specific definition of this name. If it refers to the cloud and fog pattern of all the peaks on the mountain, the statement of vapor condensation is more comprehensive. If it is just referring to the top of Mount Everest, there is reason for saying that the high altitude wind and entrained snow cover.
Theme:snow plume is a snow finger
Copyright: -mh Original submission time: 11:35:15 03 02
The snow plume is a snow finger, but above the freezing point, there is no ground area. Snow is also there as "Cowin" as Dawa posted. For example, the bottom of this picture is entirely a cloud of water vapor. The reason why the clouds only appear in the direction of the leeward of the mountain is that after the air is raised (*), the originally invisible vapor condenses into droplets that can be seen when it is cooled to the dew point. These small droplets of leeward strap form the "qiyun". Once the water droplets are away from the top of the mountain, they will slowly evaporate and become invisible. The new water droplets are formed in the upwind direction, filling the position of the water droplets taken away by the wind. So this kind of cock is not moving as a whole, but you should pay attention to the clumps in the clouds. They are moving.
The lens-shaped clouds formed on the top of the mountain and behind the mountain in the windy days are similar to the cousins ​​in principle. There is a meteorological knowledge book. Snow plume is also often categorized as a phenomenon in mountaineering because they are signs of strong winds in the mountains.
(*) There are various reasons for elevation, such as the wind being lifted by the mountain during exercise, because of heat convection (altimeter), or because the air pressure at the top of the leeward side is less than the pressure of the air that is not flowing behind the bottom (Bernou The inner effect causes the air behind the mountain to flow to the top of the mountain.
Qiyun's claim is wrong - about the formation of the Cowin
Copyright: Altimeter Original submission time: 10:11:23 March 01
Today’s Beijing Youth Daily published an article on “The Cowin Companyâ€. The formation of the Cowin that Mr. Wang Bin mentioned in the article was that 10,000 meters of stratospheric winds lowered altitude over the Himalayas, blowing snow from the 8,000-meter peak. The statement is wrong.
Qiyun is the unique meteorological landscape of Mount Everest. In the area of ​​Mount Everest, 5-7 kilometers above sea level is snow-covered. In areas over 7 kilometers in length, due to the high winds, the slopes are steep and snowfall is not easy to accumulate. Therefore, most of them are bare gravel surfaces. Whenever the sun shines directly after sunrise, the nature of the ground surface is uneven and the state of heat is different. Ice and snow reflect more heat, and the temperature is lower than that of the free atmosphere. The gravel surface absorbs heat quickly and the temperature near the ground is much higher than the free atmosphere temperature. As the cold air sinks and the hot air rises, there will be local circulation with different directions. From 7 km to the top of the peak, a significant upward movement will be maintained. At places near the junction of ice and snow and crushed stone, some of the snow and ice surfaces are sublimated by heat, sending moisture to the updraft. In this way, both ascending movement and the source of water vapor make it easy to become a cloud. Together with the height of the top of Mount Everest, it is also close to the condensing height of the updraft of the area. Therefore, convective cumulus clouds often form at the top. When clouds were formed, they were blown by high winds. Clouds in the distance were blown away, but in the immediate vicinity they were left behind because of continuous cloud formation. With different winds, updrafts and weather systems, the appearance of the Cowin is also varied.
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