Heavy 'heavy' and 'local heavy snow' often fall this winter.

■ Proceedings: Judas One Anchor
■ Video connection: Airportjin YTN Disaster Advisory Committee

* The text below may differ from the actual broadcast content, so please check the broadcast for more accurate information. Please specify [YTN Newswide] when quoting.

[Anchor]
This winter, there was an all-time heavy snow from the first snow. The wet snow caused a series of accidents such as the collapse of facilities. We will find out how much humid and local heavy snow will fall this winter, which is not easy to predict. YTN Disaster Adviser, Airport. I'm connected.Commissioner, are you out? You saw it on the sidewalk earlier. The recent heavy snow caused considerable damage. It is analyzed that the damage has increased due to the 'wet snow' that contains a lot of moisture. First, please explain the reason why the 'humidification' was created.

[Airport Jin]
Humid snow is literally snow that contains a lot of moisture. In order to contain a lot of moisture, the snow structure must be able to contain moisture, snow clouds must be able to develop, and a lot of water vapor must be supplied. It can be said that all three conditions have been met this time. The characteristic of wet snow is that a lot of water vapor adheres below minus 5 degrees Celsius. And the sea level temperature is a little higher than in previous years. So a lot of steam was supplied from the West Sea. It is also called the cold air coming down from the north, the temperature difference between the West Sea, and the sea difference, and this temperature difference has increased. So usually around 17 degrees, snow clouds develop, but this time, it's close to 27 degrees, so the conditions that wet snow can create, the organizational aspect, the water vapor supply aspect, and the development aspect of snow clouds. All three were satisfied, leading to an unusual 117-year-old snowstorm.

[Anchor]
This practice has led to a series of accidents such as facility collapse. How much difference is there in the weight difference or risk between normal eyes and 'wet snow'?

[Airport Jin]The
humidity is a little heavy because it contains a lot of water vapor. When we think of snow, we have big snow and powder snow, right? But usually, powder snow is construction. Construction means less water compared to conventional theory. However, in the case of wet snow, if about 10cm of snow accumulates in an area of 10m wide and 10m long, the weight is usually about 200 to 300kg, but in the case of wet snow, it increases to 600kg. So it's two to three times heavier than the average eye. It can be seen that the damage increases that much. Also, if you look at the difference between construction and practice, construction is easily eliminated. The wet snow keeps melting and it keeps freezing, so it's hard to remove it properly. So, it's hard to remove, so it can affect you for a long time. In addition, as things that freeze and weigh more are repeated in the middle of accumulation, humid snow is likely to cause great damage. Are we Uljin or Pohang in the past?

I had an event like MT at school, and the entire roof collapsed and suffered great damage. Even then, the snow fell more than 60cm, and the structures that could not overcome the weight of the snow collapsed. Most of our structures do not respond well to this habit and heavy snow. In Europe and Japan, where it snows a lot, the roof is in the shape of a triangle. It's supposed to flow down without snow accumulating, but most of the structures that collapse are round, so in this case, it often collapses without overcoming the weight of the snow. You can see it like this. So it seems necessary to prepare for wet snow a little stronger for structures.

[Anchor]
When you talk about 1cm of snow, it's similar to 1mm of rain, but you mentioned it earlier.If you compare 10cm of snow with 10mm of rain, the difference in damage will be significantly different. Is it because of the weight of the snow after all? Compared to

[Airport Jin]

, compared to snow, it's about a tenth of how much water it contains. So if the snow accumulates 10cm, it's about 10mm of water. 10mm is not a big deal, is it? But the big difference between rain and snow is that rain flows naturally. So it can disappear quickly, but the snow builds up and the water builds up, so it stays there until all of this snow melts. That's why the probability of damage continuing increases. So, in terms of forecasting, the 10mm forecast is not that different, but actually paying 10mm more makes it difficult to lower 10cm more. Therefore, it is not easy to remove snow, and there are aspects that are difficult in terms of forecasting. There is also this seasonal difference between rain and snow. Also, doesn't snow freeze in winter? So there can be a number of complex damages. There is such a difference between rain and snow.

[Anchor]
So far, all the heavy snow damage has not been recovered, and restoration work is said to be very slow in some areas, but the problem is that we are worried about when another heavy wet snow will fall. Do you expect snow like this to fall often this winter?

[Airport Jin]
It's actually a difficult prospect. This snow is the first heavy snowfall in 117 years, so it doesn't happen that often. However, climate change across the globe is currently progressing severely. That's why we're facing the first weather phenomena around the world. In a way, this heavy snow can be seen as the first snow we experienced. According to the Korea Meteorological Administration's long-term forecast, precipitation from December to February is likely to be similar to or slightly less than the average year. But the problem is, on average, it's small, but we can't completely rule out the possibility of so much snow all of a sudden. And as I told you earlier, if the sea level continues to be high and these conditions that can supply a lot of water vapor are formed, the temperature can rise sharply due to fluctuating temperature changes this winter. If the temperature rises, snow conditions are created, and a lot of water vapor is supplied, there is a high possibility of another heavy snow like this. Overall, the precipitation will be similar to or slightly less than that of the average year, but the possibility of some heavy snow cannot be ruled out, and we need to prepare thoroughly.

[Anchor]
According to the recent heavy snow, there was more snow than the Korea Meteorological Administration forecast. Is snow more difficult to forecast than rain?

[Airport Jin]
As I explained earlier, 10mm is 10cm of snow, but when the first snow forecast comes out, can it fall like that when the 10cm forecast comes out? There are a lot of people who thought like this. As such, the snow forecast is 10cm, 15cm, and it is not easy to raise it like this. As such, it is difficult to predict winter because the amount of water vapor decreases overall. So, forecasting can be interpreted in another way, and overall forecasting is the stage of making a law with the existing weather environment and applying the law.

But basically, if the environment doesn't change, that eye won't change. But when the environment changes, it changes. In other words, when the weather environment changes in a situation where the temperature is getting hotter as it is now, the changes in the environment cannot be used as the weather laws we know. So, in short, it is not easy for the forecast to get close to the essence. So it's hard to predict weather phenomena that you've never experienced before. These phenomena are expected to continue in the future. Perhaps the Korea Meteorological Administration or related scholars are now making efforts to improve the accuracy of the forecast by using advanced technology.

[Anchor]
On the other hand, in winter, there is another uninvited guest other than the cold, which is fine dust. There are rumors that ultrafine dust will be severe this winter, is there a reason for that?

[Airport Jin]
The overall forecast for this winter, as I said earlier, is expected to show a temperature distribution, and in this case, when the cold approaches, the dust that sank to the ground becomes more active and floats when the temperature rises. So some people express themselves as if it's not Samhan Saon, but there is a high possibility that the phenomenon of high fine dust will continue. Because if the temperature rises sharply after the cold comes, the wind decreases that much. It becomes stable, so it's hard to get out of it. This phenomenon will usually be overcome in three to four days, but even in the case of heavy snow this time, it would be nice if the air of about 5km above Korea could easily escape from the west to the east, but this is called a joint low pressure, so it falls off from the very big hovering wind. That's why the air can't escape well because it's blocked by high pressure on the right side. In short, it is called a blocking phenomenon, and air may not easily move eastward. If this phenomenon continues, one phenomenon continues for a long time. So if the cold continues, the cold lasts for a long time, and when the warm weather appears, this lasts for a long time. If this stable weather continues for a long time when the temperature rises this winter, it will take a lot of time for fine dust to escape. So, according to statistics of recent years, if you look at the extreme phenomenon of fine dust when the cold is released in this cold winter, it is better to prepare for fine dust in this winter.

[Anchor]
The weather is constantly changing due to climate change such as abnormal temperatures, and I wonder what the weather is like this winter overall. How do you view it?

[Airport Jin]
To put it simply, the viewers would want something clear. Actually, it's hard to tell you such a definite story. This is because the weather is possible for a day or so, but over time, the forecast becomes less reliable, so it cannot be predicted. That's why autumn or winter seasons are not forecasted, but the expression forecast is used. It's about 50% reliable.

So, when we use this, we have to use it with a long-term trend of how high or low it will be than the average year. Considering the Korea Meteorological Administration's proposal, the temperature is likely to be similar to or slightly higher than the average year in all three months of December, January, and February. And as I told you earlier, precipitation is likely to be similar to or slightly less than usual. But the model we have is not perfect, and it's hard to predict how the factors that affect our country, the factors that affect our country, the factors that affect our country, the factors that affect our country, will be combined.

So this winter, the temperature is higher than usual, so there will be no extreme cold, not this, but the overall temperature will be similar to or slightly higher than the average year, but the temperature will change significantly. So, when the temperature is high and when it's low, it's low. So, there may be a cold below minus 10 degrees Celsius in January and below minus 15 degrees Celsius in January. On the other hand, there may be warm weather that goes up to 10 degrees. In short, there is a high possibility that the temperature will continue to rise and fall like a roller coaster, and the possibility of heavy snow cannot be ruled out. You can look at it like this.

[Anchor]
I see. So far, I've connected the airportjin YTN disaster advisory committee to find out the weather. Thank you for talking today.