Shanghai 5 days 2 Offset Pollution Warning

Just in December, most of the central and eastern parts of China were once again experiencing persistent haze. The Central Meteorological Observatory continued to issue a bright yellow warning at 18:00 on the 5th on the 5th. It is expected that air from the 20th to the 20th of the 6th will be on the 5th, and the air will be in north central Anhui, Jiangsu, Shanghai, northern Zhejiang, northeastern Henan, southern Shandong, eastern Hubei, and northeastern Hunan. The pollution meteorological conditions are up to 4-5, and the locals can reach level 6, which is not conducive to the spread of pollutants in the air. Most of the above areas are moderately decayed. Among them, some areas in Jiangsu, Zhejiang North, and East Anhui have heavy defects. .

According to the Shanghai Municipal Environmental Protection Bureau, the concentration of PM2.5 in Shanghai has gradually increased since 18:00 on November 30th. At 1 pm on December 1, the concentration of PM2.5 has exceeded 150 μg/m3, and at 3 o'clock in the morning on the 2nd The concentration was 299.6 μg/m3 and reached the highest value. After 10 o'clock on the 2nd, the condition of air pollution spread slightly improved, but since the night of the 4th, PM2.5 concentration has gradually increased. On December 1st and 2nd, Shanghai achieved heavy pollution, and on December 3rd and 4th, moderate pollution. Severe pollution was returned on December 5th. At 0:00 PM on the 6th, the PM2.5 concentration exceeded 468 μg/m3.

At 19:00 on the 1st, the Shanghai Municipal Government issued a severe pollution warning, and implemented green electricity dispatching, production and pollution restriction of key industrial enterprises, and stop construction sites and other dust-laden operations, stopped operations at the dusty dock yard, and strengthened road cleaning and slagging. Earth-vehicle bans, prohibition of open burning of straw and other emergency measures to reduce emissions. As air pollution gradually weakened, Shanghai released the heavy pollution warning in the evening on the 3rd. However, as the concentration of air pollution rose again, Shanghai decided to start emergency measures again at 18:00 on the 5th. The city’s air conditions are short. It is difficult to get relief in time.

However, this weather situation is expected to gradually change this week. It is expected that from the 8th onwards, a cold air with a strength stronger than that of the previous period will start to affect China. Temperatures in most regions in the central and eastern parts of the country will decline, and hazy weather that has plagued China for many days will gradually weaken or dissipate.

Gradually establish a vertical observation platform for atmospheric environment monitoring The Shanghai civil defense vehicle-mounted tethered balloon, which once served the Expo security, will be lifted off in Fengxian on the 6th. It will carry a large number of air quality monitoring equipment and data transmission systems, and it will start nearly one above Shanghai. The floating of the month, real-time monitoring and collection of air quality data of different heights within 1000 meters of Shencheng, can provide a more comprehensive data basis for environmental protection experts to manage urban haze. This is the first time that China has used the tandem balloon to provide the city's Environmental Monitoring Center with an air-to-air monitoring platform for the “combined air pollution stereo observation demonstration” in the city. It is also at the leading level in the world.

The data shows that as a floating platform, the onboard tethered balloon can provide a larger range of viewing angles for the ball carrier equipment, and the higher the hysteresis height, the greater the monitoring coverage. The balloon monitoring system is 31 meters long and has a volume of 1600 cubic meters and is close to the captain of a Boeing 737 aircraft. The balloon is full of helium and looks like a "big whale." The balloon can be lifted up to 1,000 meters high. There are 4 visible high-definition cameras, an infrared camera and a hyperspectral camera. It can obtain comprehensive information such as spatial position, temperature, spectral characteristics and meteorological parameters of high-resolution images, ground and water targets. .

It is reported that the original atmospheric monitoring in Shanghai was carried out on the ground. After the typhoon balloon equipped with air quality monitoring and real-time data collection and monitoring equipment was lifted, it will become a high-altitude monitoring platform for “combined stereoscopic observation of air pollution”. According to the requirements of environmental protection experts, the staff will perform air-defense monitoring at different altitudes within 1000 meters to study the main physical and chemical characteristics and vertical distribution characteristics of high-altitude fine particles, and provide more comprehensive data for environmental experts to control urban haze. Based on this, a set of tethered balloon vertical observation platform, which is suitable for covering atmospheric environmental monitoring factors such as PM2.5, will be gradually established to ultimately serve Shanghai's urban development better.