Meteorological Analysis of the Yangtze River Total Eclipse

The monsoon climate and tropical breeze are very unfavorable to the observation of this total solar eclipse. The weather in the entire total solar eclipse zone in China is in the wet season, often accompanied by rainy days or convective rain in summer. Therefore, we searched for relevant information, comprehensively analyzed the weather conditions on the day of the total solar eclipse in the Yangtze River Basin, and gave all enthusiasts a weather guide. In the total solar eclipse area of ??the Yangtze River Basin in China, the average probability of cloudy weather in July is 55%, and the better weather is in coastal areas. Throughout the Yangtze River Basin, there are three locations to choose from: low-lying Chongqing, Wuhan and the coastal city of Shanghai. Checking the climate data, Shanghai has an average probability of 54% sunny days.

In July, convective weather often occurs in the Yangtze River Basin: localized showers and thunderstorms. Considering the formation of convective weather and weather conditions, the southern area of ??Shanghai may be the best observation point for a total solar eclipse. Breezes from the sea can lower temperatures and reduce the formation of convective clouds. Coastal areas have another problem - fog. However, according to incomplete statistics, the probability of cloudy weather caused by this has been slightly reduced by about 4%.

For enthusiasts who want to watch and photograph the corona, air pollution in cities in developed coastal areas is also one of the factors that need to be considered. If the weather is clear, the air pollution in the big city of Shanghai is unlikely to affect the appreciation of the total solar eclipse. If pollution affects the observation, the weather in Wuhan may be cleaner, but the probability of cloudy weather in Wuhan will be a few percentage points higher, and the duration of the total eclipse phase will be slightly shorter (about 4 minutes). For such a rare total solar eclipse, enthusiasts must have adequate emergency plans. Total solar eclipse observation requires consideration of weather, total eclipse time, travel convenience and cost. The plan must be flexible. On the day before the solar eclipse occurs, you'd better find out that the weather conditions in another place may be more suitable for observation, so that you can make a decision whether you need to move the observation location. The day before the total solar eclipse, the TV station will also broadcast the total solar eclipse weather forecast. Coupled with the real-time satellite cloud images on the Internet, you can find a place with better weather and consider whether you need to move.

But despite the depressing statistics on cloudy weather, there is still a chance for good weather. In some places, statistics show that the ratio of good weather to bad weather is exactly 50:50.

Attachment: Total solar eclipse observation transfer plan

Premise: Some areas of the total solar eclipse area in the Yangtze River Basin will be cloudy and some areas will be sunny

Plan: Once informed two days in advance If the weather is bad in Suzhou, Hangzhou, Shanghai and other places, rush to buy train tickets to Wuhan and go all the way west to find secondary observation points, or vice versa.

Question: There are many groups on the Internet talking about this matter, which may attract scalpers to scalp the tickets, so if you really want to completely reduce this risk, buy a ticket in advance regardless of the weather.