 I'm Chan Yeol Park and Urban Policy Division of NIPOLS in Korea. So my talk today, my talk is on the construction of aerosol monitoring platform. We entitled that as ICANN, Asian Initiative of Clean Air Network in Korea. So let me first mention the background and purpose of ICANN. Actually, now it's October from Korea and China in these East Asia areas. In every year, from October to the next year, April, the air stagnation and high PM content, PM concentration have been emerged as some very important social problem. So actually, Korean government urged or recommended to, in the high PM concentration period, government urged or recommended to stay at home. But as you see, this is all grander part and grander model, they usually they had take a walk at the urban forest areas. Also, young people want to make a time, a good time at urban forest. And so also some hiking riders, they want to play at the urban forest areas. But it's very unclear because if we had a high PM concentration period, government should provide some clear information under the, what level of PM concentration in each area. But now, until maybe until previous year, Korean government had pronounced all ability PM concentration value as a same same value in all of our country or some cities and some regions. So we want to set up some, what is the real value of the PM concentration under canopy of the urban forest areas. Actually, in urban areas, we are Korean government that already had a set up and managing the city PM monitoring networks. But there was no, there had to be, there was not that there was no monitoring networks in Korea. So I would like to report to the setup of clean air ICANN networks. As you know, the pollutants, what's the source of the pollutants is the many researcher had had a surveyed and reported the traffic industry and urban areas and some cultivated areas trace metals also the source. But what I think is the greening trees at urban areas also including the soil and food crops at rural areas and remote mountains. Some pollutants can migrate to the long range transports so they can make some cloud interaction and they can deposit into the soil or forest area. So these are some negative feedback system is some, there's some carrying capacity but it's a very well known negative feedback system at the atmosphere particular metals. However, in China, in Korea, we, in this time, we know and early spring, we had a many event, high concentration PM event, but there was no evidence under the, what is the source of the PM from China or from porno areas or the from domestic parties that there was no report and there are many results on the modeling results and aerogel optical depth and secondary organic aerogels like this. So, in, in the world, some greenhouse gases have have been monitored, including the carbon, hydrogen, oxygen and many atmosphere source pollutants source. So, like this, we have so two years ago until two years ago, we have some discontinuous monitoring under the water effects of the green buffer area between the industrial complex and the residential areas like this. We reported the red result as, as, as it is. So the PM 10 was shown as 14 or 4 to 4% was low at the residential areas compared to the industrial complex complex areas like this. Also, we had conducted some modeling data with the aerogel optical depth calculated by satellite image and the PM data and climate climate climate data. We can know the, what's the effect of the urban forest to await the PM to a pipe or so we, we concluded that about 50, half a percent, half a percentage of the urban can, or one person can lower the particular method of concentration. So, some post areas below shows the below value of the WHO auto standard level 20, 20, 25.0 microgram per cubic meters. So, from 2019 and 2020, we installed a 20, 20, we installed a PM monitoring equipments with some green EDM SVC equipment, so semi volatile compounds. We installed 20 sites, including 60 equipments. So we operating this equipment. So one, one equipment produced about 600,000 data set in a year, and interval time is 10 minutes. So, for example, to a new pipe and between P1.0 and meteorological factors also we reported in the web page. So, yeah, okay. Let me show the some web page. Let me show the web page. Okay. Yes. So, actually, we did this scientific data network can produce and can provide some good information, some basic information to overcome air pollutants and diseases in urban areas. So, this equipment, the characteristics of this equipment is not only they measure the volume concentration and mass concentration so we can analyze the source and the emergence and the growth and the budget of the particular matters. So, from 0.25 micrometers to 32 micrometers, in each particular size class, the mass concentration can be calculated and can be analyzed like this. So, this is some result in low concentration periods, PM concentration in 20 sites 60 locations data show the data show that the PM 10 was 10 low as 10.8 PM 205 as 8.0. And also this equipment can measure the BVS and AVS biogenic volatile organic compounds that from the produced from trees like isoprene and isoprene and some water plants. And AVOC is an anthropogenic volatile organic compounds and the benzene toluene and like this source from the road and the vehicles. So, in our system so we now we analyze that about 80% about 80% was composed by AVOC so the urban process the main think source of the pollutants in urban areas. So, let me show you some brief monitoring results in Busan city. So, in one site, we set up the one is residential areas like blue colors and green color is purple green or some blacking forest against pollutants. So, from the design is a industrial complex areas. So we can, we came to know, we came to know the, we came to get the data and the significant low concentration at the residential areas. So, because of now Korean government have put and have have put the many budgets to make some urban process in urban area but it is a very high expensive to get to implement and to buy the lens in urban areas. So, to support the decision, this is a scientific data system will be needed or this data system can help the decision maker to implement and manage the urban process in Korea. Let me explain the next is the expansion of the PM PM concentration platform with some carbon dioxide dioxide program program. So, as you know, carbon neutral neutrality and the carbon zero program is now of social issue also in Korea and in East Asia areas. So, now we had some data on the PM 205 mortality rate and carbon dioxide, but there are some members reported, there is some small, small weekly positive correlation between the PM concentration and carbon dioxide. So, but we, we have a platform so also we input the new equipment for measuring the carbon dioxide concentration. So we can came to know the, what is the factor of the PM concentration and carbon dioxide in urban areas. Next, let me some comment on the multi functionality of urban processing Korea. So I'd like to say it's a screw. So one is a science based. The next is a wisdom based and customized the base is very important because the main people so now is a millennium and jets and MJ generation. Many young people like to go to the first urban policy, but they, they want to have some industry like a tree delivery, tree delivery and some drinking water and the cracks like this. Okay, so we now this time we just focused on the pollutants absorption absorption and the carbon sequestration but there's some multi functionalities of one person is very important in our country. There's a very brief explanation and so maybe 20 years ago first industry is very important now is a third or six industry is very important for urban areas. So number of a higher visit to urban policy is increased in the era of COVID-19. So I, we, we reported some current ecosystem service of urban policy in COVID-19. So young people to visit or want to prefer to visit the personal space and visit areas. And the other, and the other thing is the importance of biodiversity habitat. So, as I, there's a small report on the urban ecosystems and some birds was adapted to the urban areas. So it's a high feature and variable frequency was reported were reported. And also we, so we reported some high high PM concentration can affect the low production of honeybee in Beijing Beijing algorithm areas we already system have had a survey is the high high back journey time at the high p.m. concentration. So it increased the 1.7 time increased at the high p.m. concentration. This, this high p.m. concentration can affect the polarized the right direction between sun and power of honeybee honey be be friends. I'd like to say the importance of the some urban or fresh flooding urban areas. Now climate change or so there's some great infrastructure can increase, increase the risk of the fresh flooding urban areas so the importance of water retention of the water by urban policy is very important. Also, I do like many times I mentioned the importance of street trees. So, in Asian reasons, we, I think we have some standard stuff we can have some standard statistics and urban policy including urban street trees. It's very difficult to define the what is the urban forest in each country is in Singapore, China, Korea and very different points. Street trees are very easy. So it is a some starting point to make a standard statistics on urban forest in Asia. And because these urban trees is a very good benefit for in summer, ten years and air temperature. Actually, in Seoul, Korea, we use the central bus station. It's a very risky. So 10 minutes or 10 or five or 10 minutes, some people's weight of bus is a very risky environment to pollutants and heat waves. So it's my conclusion. We set up network for measuring finders to add 60 location in 20 place of police in Korea under canopy areas. And this measurement can produce about 600,000 data set every 10 minutes for air loads and weather information. Geopolitical characteristics, a lot of monitor and air pollutants in, in North East Asia, including China and determine when policy will act as absorption source. So I think that this I can can act as a platform for urban planning and policy management policy to maintain clear air in East Asia. Yeah. That is all. Thank you for your is a summer. Thank you very much, Mr. Park. It's very interesting. And I think that's what we need. We need to have very comprehensive monitoring network so that we can better understand what we have, how we can provide.