Climatic characteristics of twilight clouds

Twilight and Clouds: Unique Climatic Conditions in East Sichuan

The ground structure is only a unilateral factor that constitutes the image of the goddess. What is intriguing is that the incarnation of the goddess in Song Yu's works is not a mountain peak, but "it is raining at dusk", that is, two interrelated weather phenomena. This is also closely related to the natural geographical environment of Wushan. The climate in Badong area is characterized by cloudy and rainy nights.

The climate in Badong is characterized by high air humidity and cloudy days. The average number of cloudy days in Chongqing is as many as 2 19.6 days per year, which is amazing. Especially in the winter half year, it is cloudy for two and a half days almost every three days in 65438+February in Chongqing. In this case, it is conceivable that the sky around Badong is overcast all the year round. Correspondingly, another climate feature is rainy, especially at night, so that "late rain" has become the most prominent climate feature in this area. The main factors that form these climatic characteristics are the ground structure and atmospheric circulation, and the mechanism between them will not be detailed here, because the relevant knowledge is too professional, which is close to the common sense of climatology. Here, the author must emphasize that the two incarnations of "morning clouds and dusk rain" arranged by Song Yu for the goddess are really a high generalization of Wushan's climate landscape, which people who are not familiar with the climate characteristics here can't understand.

Many people can notice cloudy weather when they pass through Wushan. Lu You once recorded his personal experience of entering Shu:

It's sunny, and I can't see anything, but there are some white clouds on the goddess peak, like a phoenix, and a crane is dancing, which can last for a long time.

This is an accidental observation. Fan Chengda, who passed by here a little later than him, described this in Wu Luchuan:

The most beautiful place in Wuxia Mountain is cloudy and windy, no matter rain or shine, you can't draw. I have seen the other two, and what I saw is natural. It happens occasionally when I pass by, and of course, the language of the cloud is well-founded.

Although the word is still cautious, it means to discuss probability. Although the author has only "crossed twice", each time it is random, and "rain or shine, it is often cloudy", plus the results of random observation by others, it should be said that it is not too difficult to draw the conclusion that "the words of the clouds are also justified".

In contrast, it is much more difficult to find that the sentence "It rains at dusk" is "justified". Because most people are passing by, there are relatively few people staying at dusk. Those who spend the night may not encounter "rain"; Even if it rains, this accidental meeting is not surprising, and it is difficult to explain the perennial situation. Therefore, if we want to find the climate characteristics of "rainy night" in this area, we must have a deeper understanding of the natural environment in this area. Therefore, most people seldom regard "twilight rain" as the real climate feature of Bashan area when pouring images such as "goddess" and "sex and rain". There are many quasi-Yuefu poems with Wushan Gao as the theme, such as Liu Hua, a Qi person in the Southern Dynasties:

Gaotang and Wushan face each other alternately; Burning in the clouds, the atmosphere is out of the clouds. Scattered rain closes the dusk platform, and the clouds roll up the morning barrier; It's not easy to entangle, Juanjuan is disappointed.

What Shen Quanqi did in the early Tang Dynasty:

Goddess to Gaotang, Wushan sunset; Pei Hui went to beg for rain, and Grace Fu went after Wang Jing. The film Before the River Falls, Foreign Minister Lei Shengxia; There is no auspicious rhyme, and the pavilion is pale.

It is difficult to identify the relationship between the image of "sex and rain" in these poems and the natural environment in real life.

Of course, there are also some articles that pay attention to the climate characteristics of Wushan rainy night. The most famous is Li Shangyin's famous Notes for Friends in the North on a Rainy Night:

Jun asked that the return date was undecided, and the evening rain rose to Qiu Chi; When * * * cut the candle at the west window, but talk about the rain at night.

Needless to say, the writing of this poem is based on the author's actual life experience. It is not difficult to infer that Song Yu's definition of the incarnation of the goddess as "morning cloud" and "dusk rain" is indeed the result of a real understanding of the climate characteristics of Wushan. Imagine that if the goddess head he set was not "rain in the morning and evening"-not to mention the wind, frost and lightning, even if it was "rain in the morning and evening" or regardless of the rain in the morning and evening-this literary image is bound to fade a lot. Although there is not much difference in aesthetic feeling in that way, it is difficult to find the symbol of the goddess in real life, because it violates the operating law of Wushan natural environment. It is hard to imagine the vitality of such a literary image, because it is not easy to be "said".

It is worth pointing out that "night rain" is not a unique climate feature of Badong. This phenomenon is very common in Sichuan basin and the vast southwest mountainous areas, and the rate of night rain in many places even exceeds that in Badong. However, as far as Chu State with Jianghan as the center is concerned, the phenomenon of night rain near it is more prominent in Badong area. It should be said that the ground structure and climate characteristics are the main reasons why Song Yu located the place where the goddess lived in Wushan. Otherwise, if there is such a suitable place within the scope of "Cloud Dream", Song Yu will definitely not go further. Although this is far from unattainable.