No more wind! To expose the "scientific and technological artifact" behind the blue sky

A cloudless blue sky ""
This is the best praise to the sky
In recent years, with the emission of sulfur dioxide and nitrogen oxides,
And concentrations of fine particulate matter (PM2.5) continue to decrease in key areas.
There are more and more blue skies on the top
But do you know -
In addition to the efforts to protect the environment,
Scientific and technological innovation also plays an important role
A series of high-tech "artifact" is scattered in every corner of the city and countryside.
New technologies, such as the Internet of things and big data, are also starting to work
They are woven together into a modern science and technology of the nets above and snares below
Let the pollution source to escape
Guarding the blue sky above us
I'll take you today.
These "online" scientific and technological forces
NO.1 air monitoring unmanned aerial vehicle
In recent years, many provinces have tried to use UAVs to monitor the atmosphere. In addition to aerial photography, UAVs can also carry air detectors. In the designated air suspension detection of environmental data and detection of sulfur dioxide, nitrogen oxides and PM2.5, the previous practice is to use hand-held devices on the ground and unmanned aerial vehicles (UAV). In order to accurately grasp the geographical location of pollution sources, we can transmit data to the ground station in real time by scanning flights like snake and ring.
NO.2 carbon dioxide monitoring scientific experimental satellite
In December 22, 2016, China launched the first scientific experimental satellite of carbon dioxide observation - TanSat, which became the third country in the world to provide carbon satellite data. This is a reflection of the powerful application of scientific and technological means in environmental monitoring. Based on MODIS, OMI, AIRS and other satellite sensors, the dynamic monitoring of a series of regional atmospheric pollution and ecological environment can be carried out in a series of atmospheric pollutants, fog and haze distribution, dust transport, straw burning, urban heat island, vegetation index and so on, such as PM2.5, NO2 and so on.
NO.3 air monitoring MicroStation
The construction of air monitoring micro station is the practice of numerical simulation technology of atmospheric flow field. This technique can be used to simulate the flow field in large area by computer technology, and then to trace the possible direction of pollutant from the distribution of pollutants, and then identify the source of pollution. At present, air quality monitoring stations have been built in Beijing, Tianjin, Shanghai, Henan and Shandong.
NO.4 atmospheric environment stereoscopic walking observation vehicle
Carrying telemetry equipment, combined with three-dimensional high-precision electronic map, it can realize the side walk test, not only can tell the cause of pollution, pollution source, pollution trend, but also can find the source and locate the location of the pollution source in time. It can play an important role in controlling and supervising the emission of pollution sources. Pipe coordination is widely applied in environmental monitoring and environmental monitoring system.
NO.5 air monitoring system for taxi mobile platform.
In 2017, the Ji'nan taxi mobile platform air particulate matter monitoring project was successful. Using this system, the total number of taxis will exceed 23 thousand kilometers per day. It can cover more than 95% of the urban motor vehicle roads. Through the multi vehicle relay, it can be monitored continuously for 24 hours, and the taxi can be taken every 3 seconds. A data is sent back, so that a fine Urban Haze map can be automatically generated, which provides data support for grid supervision.
NO.6 mobile APP
Since 2016, the Beibei District of Chongqing has invested about 3000000 yuan to build a comprehensive information platform for the science and study of air pollution prevention and control, and 21 air quality monitoring points have been built, and the area level atmospheric environmental monitoring network is fully covered in Chongqing. The monitoring equipment can upload the particles, wind direction and wind speed to the monitoring area in real time to the monitoring area. Information platform enables environmental protection workers to check at any time by mobile phone App.
NO.7 3D visual laser radar
In the general impression, radar is used to detect, locate, track aircraft and space targets, and locate and navigate accurately on ships. In reality, radar has another special function -- monitoring environment. The 3D visual laser radar emits green laser beams through the lens into the atmosphere and scatters through the molecules, particles (clouds, dust, etc.) in the atmosphere, and then received by the radar system. When laser irradiates particles of different concentration, diameter and shape, it will generate different echo signals. After the laser radar receives the signal, the echo signal of different distance (height) is obtained by calculating the propagation time of light in the air, thus the distribution of aerosol particles along the direction of the beam emission is obtained. This radar can accurately locate the most dense longitude and latitude of pollutants, help law enforcement officers to lock pollution sources and catch the pollution of "real murderers".
NO.8 Internet of things sensor
Actually, it's the application of sensor technology in the field of Internet of things. Compared with the traditional monitoring system, it has the characteristics of small volume, low cost, flexible distribution, convenient power use and so on. It can provide more monitoring points and wider coverage, thus providing technical support for the fine management of the environment.
NO.9 Internet big data technology
It uses large data mining analysis function to co-ordinate large data related to meteorology, transportation, geography, economy and industry. It combines environmental monitoring data, economic development data and population social information to excavate the potential value of the data and guide the environmental protection department to better carry out the management work.
Besides those mentioned above, they have been put into practical means.
There are still many "technology artifact" to defend our blue sky.
There is no way to list one by one
These "science and technology" I recount
Supporting the continuous development of environmental protection in China.