Will it be cold this winter in Guangdong? Will it be cold this winter in 2021-2022?

Many people say that this year will be relatively cold. I don’t know if you feel this way now. At present, I don’t feel that this year will be relatively cold. On the contrary, I think this year may be a warm winter. Friends from Guangdong may want to experience a different winter. 1. Is it cold in Guangdong this winter?

The probability of it being cold is high. Experts point out that a La Ni?a event has formed again this winter, resulting in a relatively high probability of a colder winter. But this is not absolute. It does not mean that La Ni?a events will definitely cause colder temperatures in winter. It may only have a periodic impact on winter, and this winter is no exception. The current forecast of the National Climate and Climate Center also believes that in the winter from December 2021 to February 2022, most of the winter temperatures in our country will generally be colder. A periodic cold wave process like the recent one may occur in the coming months. Appears more than once in winter. 2. Is it generally cold in Guangdong in winter?

Although the temperature in Guangdong is not low in winter, it is still quite cold. The weather in Guangdong is relatively humid and the winter is relatively wet and cold.

Although the winter in Guangdong is not as long as that in the north (especially in the Northeast), due to the relative humidity, the human body feels much colder than the same temperature in the north. For example, 10 degrees above zero feels better than 10 degrees below zero. cold. Winter in Guangdong is often drizzled, which can make people feel cold to the bone. If you suffer from rheumatism and other diseases, you may even feel sore all over your body, aggravating your condition.

From a physical point of view, the more humid the air, the greater the thermal conductivity. The humidity in Guangdong is high in winter, and the human body loses heat more easily. The winter in northern China is relatively dry, and there is heating indoors. 3. What is Double La Ni?a?

La Ni?a is Spanish "LaNi

a" - "little girl, saint". La Ni?a event refers to a cold water phenomenon in which sea surface temperature anomalies in the central and eastern equatorial Pacific Ocean appear to be cold in a large area, and the intensity and duration reach certain conditions. Together with El Ni?o, in which sea surface water temperatures continue to be higher than normal all year round, it is considered to be an important cause that may lead to abnormal global climate.

Zhou Bing, chief expert of climate services at the National Climate Center, said in an interview with The Paper that, generally speaking, the climate impact of La Ni?a is roughly opposite to that of El Ni?o. Its intensity and impact are not as strong as El Ni?o, but its arrival It may also bring disasters to many parts of the world.

According to statistics from the National Climate Center, since 1950, 16 La Ni?a events have occurred around the world. Among them, there was only one strong La Ni?a event, which lasted from May 1988 to May of the following year; there were 9 moderate intensity events; the others were all weak events.

Following the end of the last La Ni?a event (from August 2020 to March 2021), a La Ni?a event will form again this winter, that is, a "bimodal La Ni?a" has occurred for two consecutive winters. Therefore, La Ni?a has Impacts may be more pronounced in the tropics and subtropics.

"Judging from existing observational data, alternating cold and warm sea temperature changes have always existed. Normally, after the end of the La Ni?a phenomenon, the sea temperature should return to a neutral or warm state, so' The bimodal La Ni?a phenomenon is relatively rare,” the National Climate Center predicts.

From a global impact perspective, when most La Ni?a events occur, precipitation decreases in areas near the coast of South America, while precipitation increases in Indonesia and eastern Australia; droughts often occur in central Africa, southeastern United States, and other places, and northeastern Brazil Floods are prone to occur in places such as India, India and southern Africa.

As for the impact on my country’s climate, it can be seen from two aspects: temperature and precipitation. In the winter when most La Ni?a events reach their peak, the cold air activities affecting my country are more frequent and stronger than normal. The temperature in most areas of central and eastern my country is more likely to be lower than the same period in normal years; while the tropical and subtropical regions are affected by The influence of La Ni?a events will cause the water vapor conditions in southern my country to deviate significantly from the same period of the year, which is not conducive to the formation of precipitation.

Specifically, according to a comprehensive analysis of the five La Ni?a events that occurred from 2000 to 2018, in terms of temperature, in the winter of La Ni?a years, the temperature in most areas of central and eastern my country is generally warmer than the same period in normal years. The temperature is low, especially in Northeast China and eastern Inner Mongolia, where the temperature is 1 to 2°C lower, and in some places it is more than 2°C.

In terms of precipitation, in the winter of a La Ni?a year, precipitation in the northern and southern parts of Northeast China, central and northern North China, the central and western parts of the middle and lower reaches of the Yangtze River, and southern South China is less than that of the same period in normal years. Among them, the northwest and southern parts of Northeast China have less precipitation than the same period in normal years. , central and northern North China, northwestern Jiangnan and other places are 20% to 50% less, and local areas are more than 50% less; while the central and western Northeast China, southwestern North China, most of Huanghuai, southeastern Northwest China, eastern Jiangnan, and South China Precipitation is higher in northern and other places, with precipitation in the central and western parts of Northeast China, western South China and central and eastern Inner Mongolia exceeding 20%, and rainfall in southwestern Jilin and central and eastern Inner Mongolia being 50% to 1 times higher.

Many people still remember the snow disaster in southern my country in 2008. The Northern Hemisphere was also affected by La Ni?a events in 2008. Affected by the La Ni?a event in 2007/2008, my country was hit by four low-temperature rain, snow, and freezing weather processes from January 10 to February 2, 2008.

Low-temperature rain, snow and freezing disasters have a wide impact, involving nearly two-thirds of the provinces (autonomous regions and municipalities) in the country, including 20 provinces (autonomous regions and municipalities) such as Guizhou, Hunan and Hubei. Henan, Hubei, Anhui and other places experienced heavy snowfall, and freezing rain occurred in Hunan, Guizhou and other places. Meteorological satellite remote sensing snow monitoring shows that the total snow coverage area is 1.282 million square kilometers.

However, the National Climate Center analyzes that heavy snowfalls in many places in the south are extremely catastrophic events with a low probability. The situation of snowstorms in 2008 is more complicated. In addition to the low temperatures caused by the cold air caused by La Ni?a, there are also The cooperation of water vapor in the south does not mean that there will be widespread snow disasters every time a La Ni?a event occurs. Moreover, the La Ni?a phenomenon is divided into "weak, moderate and strong". Different levels of La Ni?a phenomenon have different impacts on my country's winter temperatures.