What's the climate like in Taiwan Province Province?

Taiwan Province Province is located in the monsoon climate, and the monsoon is greater than the trade winds. May to September is summer in Taiwan Province Province. The early summer is influenced by the humid warm air flow brought by the southwest monsoon, and then by the subtropical high controlled by the tropical ocean air mass. The temperature can often reach 27 to 35 degrees every day, and the humidity is also very high. The average temperature in July reached 28 degrees. Summer is long, winter is relatively short, and winter is affected by cold air. According to the temperature of Taipei station, it can be divided into continental cold air mass, strong continental cold air mass and cold wave. In addition, Taiwan Province Province is surrounded by the sea. Once the cold current from near Lake Baikal and northern Chinese mainland moves south, it is also neutralized by the ocean warm current and blocked by water vapor, so the climate is warmer than that in the coastal areas of South China and even the northern part of Hainan Island. Is controlled by continental air masses. The average temperature in June is 5438+ 10/4 degrees, but there are still opportunities for snowfall in mountainous areas such as Hehuanshan, Yushan and Xueshan. Therefore, Taiwan Province Province has a southwest monsoon in summer and a northeast monsoon in winter, and sometimes the wind direction changes because of the position of the air mass. For example, the southeast wind from the westward extension of the Pacific high in August, the dry northeast wind in autumn in 10, or the warm east wind after the cold air mass moves eastward into the sea in winter.

The average annual rainfall in Taiwan Province Province is 2515mm, but it varies with season, location and altitude. It rains all year round in the north and east, and Keelung is called "Rain Harbor". The rainy season in central and southern China is mainly in summer, so the dry and wet seasons in southern China are distinct.

There are often many typhoons passing through Taiwan Province Island. June to September is the typhoon season, with an average of three or four typhoons hitting Taiwan Province Province in summer and autumn every year. Typhoon provides abundant water resources for Taiwan Province Province, but due to the uneven distribution of rainfall in space and time, it is easy to cause floods, mudslides and other disasters. On the other hand, if Taiwan Province Province lacks rain brought by typhoons in summer, it will be prone to drought in winter. The northeast monsoon from Mongolian high prevails in winter and the southwest monsoon prevails in summer in Taiwan Province Province. Mountains can block the monsoon and form the rain shadow effect.

Natural Disasters The common weather natural disasters in Taiwan Province Province include typhoon, cold damage, rainstorm, and rare hail and tornado.

There are three or four typhoons on average every year. Tropical cyclone is the main factor affecting the climate in Taiwan Province Province. In addition to strong winds causing damage to houses, instantaneous rainfall brought by tropical cyclones is also easy to cause heavy rain. Because of the uneven distribution of rainfall in space and time, it is easy to cause floods and mudslides. On the other hand, tropical islands are prone to drought in winter due to insufficient rain brought by tropical cyclones in summer.

Meiyu is affected by seasonal shift of wind belt and multi-scale interaction. The rainy season in Taiwan Province Province usually occurs from mid-May to mid-June every year. The annual rainy season rainfall is different, and the precipitation is uneven in time and space. If there is insufficient precipitation in the rainy season, it will cause drought. If there is too much precipitation, it will cause flash floods and crop losses.

The cold damage to Taiwan Province Province is warmer in winter, but the influence of cold air on Taiwan Province Province will be determined by factors such as thickness, moving direction, deep trough line and water vapor. Occasionally, a cold wave strikes, and the temperature drops below 10℃, resulting in losses of agricultural and fishery crops.

Tornadoes According to data from central weather bureau, tornadoes have occurred in Taiwan Province Province from Taoyuan to Pingtung. Tornadoes are often accompanied by strong convection. During the rainy season in May and June, or after the typhoon in July and September, small tornadoes occasionally appear in the flat areas in the southwest of Taiwan Province Province and the offshore of Penghu.

Special climate [Editor] Downhill wind refers to the persistent abnormal strong wind that often appears in the peninsula in winter. The reason is that the northeast monsoon is blocked by the central mountain range, and when it reaches the peninsula, because of the low mountain, it turns over the hills with small height, and the valley effect caused by the adjacent terrain forms a strong downhill wind. Geographically, the downwind climate also caused a rare dune landform (Jiupeng Dune) in Taiwan Province Province.

Foehn refers to the hot and dry air that often appears in Taitung-Chenggong area when there is a typhoon passing through the northern part of Taiwan Province Province or a strong southwest wind in summer. During a typhoon, the temperature suddenly rises above 34℃ [1], which can be called "foehn". The reason is that the airflow is blocked by mountains and cooled into clouds and rain on the windward side; After crossing the mountain, it becomes dry air, which is compressed and heated to form dry hot wind, which is easy to cause agricultural harm. Similarly (when the typhoon passes through the south of Taiwan Province Province), there may be foehn in Hsinchu-Taichung and Keelung-Taibei areas, but the frequency is low.

Northwest rain Northwest rain refers to convective rainfall caused by high temperature rise in summer afternoon, with large rainfall, small precipitation range and short time, often accompanied by lightning. The reason is that in summer afternoon, the sunshine is strong, the evaporation is strong, and the airflow rises violently, becoming a shower.

abnormal climate

El Nino phenomenon El Nino phenomenon is the change of sea surface temperature and ocean current in the equatorial eastern Pacific Ocean. Under normal circumstances, the air pressure in the eastern part of the Pacific Ocean is higher than that in the western part, so a tropical easterly belt is generated, which drives the Pacific Ocean current to move westward. Sea surface temperature is one of the main factors affecting atmospheric climate. In El Nino period, there may be abnormal Leng Xia or warm winter, while in anti-El Nino period, it may be hot in summer and cold in winter.

Haze is a pollutant emitted by vehicles and factories, which combines with water vapor in the air and accumulates under the inversion layer. In addition, photochemical pollution, less precipitation, poor convergence and poor atmospheric diffusion conditions reduce visibility. Usually in winter and spring, when the weather is fine and the wind speed is weak, the air quality in the western metropolitan area of Taiwan often deteriorates rapidly, and yellow-brown haze ridges are often seen over the city.

dust storm/devil

Affected by the sandstorm in Chinese mainland, the visibility in the coastline of Taichung County is about one kilometer at night. Sandstorm is a kind of climatic phenomenon that dust raised by strong winds in northwest China leads to a large number of fine dust in the atmosphere. Sometimes sandstorms are accompanied by harmful substances such as industrial pollutants, which have adverse effects on the environment and human health. Sandstorms in northwest China and Mongolia generally affect North China, South Korea, Japan and even North America eastward through westerly airflow, and usually do not directly affect Taiwan Province Province. However, sometimes suspended particles will still affect the air quality in Taiwan Province Province southward through the northeast monsoon.

On March 26th, 2000, Taiwan Province Province experienced the biggest sandstorm in history. The concentration of suspended particulate matter at all 39 stations in Taiwan exceeds 1000 μ g/m3 (exceeding 300 is harmful).