Causes of Winter Snowfall in Hokkaido and Honshu Island, Japan

Due to the influence of maritime climate, there is abundant snowfall here in winter, which is the main source of snowfall water vapor in Hokkaido, Japan.

The Japanese archipelago is 3000 kilometers long from north to south, spanning from subtropical zone to sub-frigid zone. Due to the huge influence of complex topography and ocean currents, the climate in different regions is significantly different. Affected by the conventional monsoon, the cold current moves south in winter and the tropical airflow moves north in summer. Under the influence of these two kinds of airflow, winter and summer each last for several months, while spring and autumn at the turn of monsoon each last for about two months. Affected by the Pacific warm current, most parts of the Japanese archipelago have abundant rainfall, with annual rainfall of 65,438+0,600-65,438+0,700 mm. It often rains from early spring to summer, especially in the rainy season from June to July, and the southwest is often hit by typhoons at 8-65,438+00 every year. In winter, the northwest cold monsoon strikes, and there is more snowfall along the coast of the Sea of Japan, making this area one of the few snowy areas in the world. Niigata Prefecture and other places have a snow depth of 4-5 meters every year, which is in stark contrast to the sunny and dry climate on the Pacific side. The southern part of Honshu is hot in summer, almost like Southeast Asia, and it is a typical sunshine forest climate. There are 3-4 months in summer, which is the same as that in Southeast Asia. Therefore, southern plants such as potatoes and rice have become the basis of Japanese farming culture, which in turn makes Japanese culture have typical southern characteristics.

& ltBR & gt& ltBR & gt

The main characteristics of Japan's climate are mild and humid all year round and distinct seasons. March, April and May are spring, with changeable weather and little rain. June, July and August are summer months, and there is a lot of precipitation on the Pacific side, and the southern part of Honshu is sweltering for a long time. September, 65438+1October,165438+1October are autumn and the weather is fine, but there is autumn frost from the beginning of September to the beginning of1October in 65438+/kloc-0, during which typhoons are frequent. February of 65438 and October and February of the following year are winter. The Sea of Japan has more snow, shorter sunshine and warmer air, while the Pacific Ocean has less rain and snow, and the weather is sunny and dry. & ltBR & gt& ltBR & gt

The average temperature in Japan is mostly above 10℃, and the coldest months are generally 1 and February. Except for northern Honshu and Hokkaido, the average temperature is above 0℃. The hottest months are usually July and August, and the temperature in most areas is above 20℃. The temperature difference between north and south of Japan is large, especially in winter. For example, the average temperature of Kawasaki 65438+ 10 in Hokkaido is -7.8℃, and that of Okinawa 17.2℃ is 25℃ different.

& lt/P & gt；

& ltP & gt

Japan is a rainy country, and the annual precipitation in most areas is between 1500mm and 2000mm. Meiyu and typhoon are also the characteristics of Japanese climate. The rainy season begins in June every year and lasts for more than a month. There are many typhoons at the turn of summer and autumn.