Influence of Cold Wave Weather on Pearl River Delta Region

Hazards of cold wave: Cold wave is a large-scale cold air activity, so when it strikes, the weather changes dramatically. The cold wave affects a wide range and disasters occur frequently. Cold wave weather has the greatest impact on agriculture. The temperature drop caused by cold wave can reach 10℃ or even above 20℃, which usually exceeds the cold tolerance of crops and causes freezing damage to crops. The freezing rain, snow and ice weather brought by the cold wave is extremely harmful to transportation. Severe snow and freezing rain will crush wires and break poles, which will lead to the interruption of communication and transmission lines and the obstruction of transportation. Strong winds can also overturn ships and destroy buildings. Due to the sudden drop in temperature, people's immunity will also decline, and at the same time, many diseases will take advantage of it.

Cold waves also have beneficial effects. The cold wave contributes to the heat exchange on the earth's surface. The cold wave injects a lot of cold air into tropical areas, which makes large-scale heat exchange on the ground, which is very helpful to maintain the ecological balance of nature and maintain the lush species.

purpose

Strengthen cold wave prevention;

Do all kinds of defense work in time. All localities and relevant departments should attach great importance to it, take immediate action, take effective countermeasures, and organize defense work in a timely and responsible manner. At the same time, news media, e-commerce, mobile phone short messages, etc. It should be used to quickly release the weather change process and related news and defense measures to the society, so that the masses and relevant units can carry out defense work in time.

Ensure the safety of agricultural production. It is necessary to organize agricultural technicians to go deep into the front line, actively guide and help the masses to take various defensive and remedial measures to minimize disaster losses. Protected agriculture should strengthen the shed to ensure the safety of livestock and poultry.

Do well in other aspects. It is necessary to carefully investigate key parts such as construction sites, outdoor advertisements, power facilities and dangerous houses in urban and rural areas that may be affected by strong winds, prevent possible problems in advance, and ensure the safety of people's lives and property.

Personnel engaged in offshore operations should take measures such as stopping operations, returning to Hong Kong to take shelter from the wind and strengthening ships and drilling platforms according to the weather forecast. In case of strong wind, airports and highways are closed, and passenger trains are stopped under special circumstances to prevent traffic accidents caused by strong wind.

The main measures for citizens to prevent cold wave are: 1. Close the doors and windows and fix the outdoor structure. 2. Residents should pay attention to adding clothes to keep warm, especially for the elderly and infirm patients. 3. Take measures to keep warm and prevent slipping when going out. 4. Drivers should take anti-skid measures, pay attention to road conditions, obey orders and drive slowly. Farmers should drive wild animals into sheds to feed them. 6. Outdoor operators such as high altitude and water should stop working. People in dangerous houses should be evacuated quickly, especially in the case of snowstorm. 8. Beware of carbon monoxide poisoning, especially for residents who use coal stoves and charcoal for heating. 9. If you are trapped by a snowstorm, call for help as soon as possible.

News report

Cold waves frequently hit Xinsha Port in Dongguan, Guangdong Province, and coal imports increased greatly (201165438+1October 26th).

Cold waves occur frequently, heating power consumption rises sharply, and coal demand increases greatly. Many enterprises buy a lot of imported coal to ensure production. The reporter learned from Huangpu Customs yesterday that the coal import volume of Xinsha Port, an important coal import port in South China, has increased greatly recently, and Xinsha Customs has taken measures to ensure the rapid customs clearance of imported coal.

A large number of fish froze to death due to cold wave in Qingyuan, Guangdong (20110/07)

Recently, a reporter found a small area of tilapia on the water in a mountain pond in xiaohe village, Shijiao Town, Qingcheng District. According to Zheng Jingxin, head of the fishery department of Qingyuan City, tilapia usually freezes to death below 8 degrees Celsius. For fish that are afraid of cold, such as tilapia and shad, experienced fishermen will take cold protection measures on June 5438+00-1/kloc-0: First, do a good job of sheltering from the wind; Secondly, deepen the pool water, at least 3 meters above; Moreover, it is necessary to make a wintering pool, especially some enterprises should add insulating rods to protect fish species. Zheng Jingxin believes that the weather is abnormal this year, and fishermen may be lucky and have not taken serious cold protection measures. In addition, because frozen fish are relatively small, it is not excluded that these are small fish that have just hatched in autumn.

A cold wave hit more than 0/00 counties and cities in Guangdong Province, and issued a cold warning signal (20 10 12 16).

The cold wind blows the trees, the cold rain floats the sky, and the pedestrians in the street are wrapped in thick winter clothes. Under the moving umbrella, many people locked their necks and still couldn't help shivering. This is the street view of Guangzhou in the afternoon of 15. The reason for this scene is that the cold air sweeping across the country has strongly attacked Guangdong.

At 20 o'clock on June 5438+05, the reporter learned from the Guangdong Meteorological Observatory that during the day on June 5438+05, the main body of strong cold air in the south affected Guangdong from north to south. Affected by this, the temperature in Guangdong plummeted. Lu shan, chief forecaster of Guangdong Meteorological Observatory, said that the main areas in northern Guangdong had dropped to minus 1 to 3℃, and the lowest temperature recorded in Shaoguan was minus 4.9℃. Small to moderate rain occurred in most parts of Guangdong, and sleet appeared in parts of northern Guangdong.

The severe cold wave also affected the traffic. The temperature of Beijing-Zhuhai North Expressway is about 65438 0℃, and some sections and guardrails are frozen. By 8: 00 p.m. on June 5438+05, all kinds of cold warning signals and road icing signals had been issued in 102 counties and cities in Guangdong, among which 5 counties and cities such as Yangshan issued cold red warning signal and more than 50 counties and cities issued cold orange warning signals. Lu Shan said that at present, the temperature in Guangdong Province continues to drop and the rainfall continues, and the impact of the cold wave in Guangdong Province will gradually deepen, especially in northern Guangdong and mountainous cities and counties. In Guangzhou, the temperature dropped by 5.6℃ in 8 hours, and it dropped by nearly 1 hour 1℃. At 20: 00 on the 5th, the temperature in Guangzhou has dropped to 9℃.