China's spring/autumn VS US's spring/autumn (climate, hottest, warm)
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China usually warms up very quickly in spring and cools down very quickly in autumn.
US usually warms up very slowly in spring and cools down very slowly in autumn.
Therefore, most parts of China are very warm in April and May, and relatively cool in October and November.
Most parts of US are very cool in March and April, and relatively warm in September and October.
In brief, spring in China is warmer than US, and autumn in China is cooler than US.
China doesn't have seasonal lag. In traditional Chinese calendar, summer starts in early May and ends in early August. Winter starts in early November and ends in early February.
Why does US have seasonal lag? Especially California, the hottest time of the year in California is in September. However, the coldest time of the year in California is December which is the same as most parts of China.
Why does China always start its new season very early?
Last edited by Zerence24; 08-13-2019 at 08:48 AM..
China usually warms up very quickly in spring and cools down very quickly in autumn.
US usually warms up very slowly in spring and cools down very slowly in autumn.
Therefore, most parts of China are very warm in April and May, and relatively cool in October and November.
Most parts of US are very cool in March and April, and relatively warm in September and October.
In brief, spring in China is warmer than US, and autumn in China is cooler than US.
China doesn't have seasonal lag. In traditional Chinese calendar, summer starts in early May and ends in early August. Winter starts in early November and ends in early February.
Why does US have seasonal lag? Especially California, the hottest time of the year in California is in September. However, the coldest time of the year in California is December which is the same as most parts of China.
Why does China always start its new season very early?
Are you comparing climates at the same latitude in the US and China or with the same winter and summer peaks?
Are you comparing climates at the same latitude in the US and China or with the same winter and summer peaks?
Not climates, just spring (March to May) and autumn (September to November) at the same latitude in these 2 countries. For example, New York and Beijing, or Miami and Hong Kong.
I am not 100% sure but at least for Eastern North America, I think the fact that you have essentially a large arctic body of water at a relatively low latitude (Hudson Bay), it depresses temperatures in the spring time and keeps it warmer in the fall. Take a look at this climate for example at 58N:
I am not 100% sure but I am going to say it has to do with the monsoonal nature of Chinese climates. Winter in China is much colder than in North America because the Siberian high pushes cold air down from the north. When the Siberian high weakens and the winds start to shift direction, it allows for a faster warm up due to sun angle as well as a faster cool down in the fall. In North America, there isn't really a winter monsoon in the same way as there isn't really permanent high pressure in winter. Also at least for Eastern North America, I think the fact that you have essentially a large arctic body of water at a relatively low latitude (Hudson Bay), it depresses temperatures in the spring time and keeps it warmer in the fall. Take a look at this climate for example at 58N:
Notice how Inukjuak is much colder year round especially in spring due to Hudson Bay. I think that translates to climates much further south as well.
Okhotsk is warmer than Inukjuak year round, but Okhotsk still warms up very quickly in spring, and Inukjuak cools down very slowly in autumn. Therefore, temperatures in October are the same (Max: 2C) for both cities, and Okhotsk(MAX -10C) is much colder than Inukjuak(MAX -4C) in November. Now let's look at spring, in April, the average max temperature is 0C in Okhotsk which is much warmer than Inukjuak(MAX -7C).
Okhotsk is warmer than Inukjuak year round, but Okhotsk still warms up very quickly in spring, and Inukjuak cools down very slowly in autumn. Therefore, temperatures in October are the same (Max: 2C) for both cities, and Okhotsk(MAX -10C) is much colder than Inukjuak(MAX -4C) in November. Now let's look at spring, in April, the average max temperature is 0C in Okhotsk which is much warmer than Inukjuak(MAX -7C).
Exactly and the reason for the seasonal lag is Hudson Bay. It causes spring to be much cooler. Asia doesn't really have anything like Hudson Bay.
China usually warms up very quickly in spring and cools down very quickly in autumn.
US usually warms up very slowly in spring and cools down very slowly in autumn.
Therefore, most parts of China are very warm in April and May, and relatively cool in October and November.
Most parts of US are very cool in March and April, and relatively warm in September and October.
In brief, spring in China is warmer than US, and autumn in China is cooler than US.
China doesn't have seasonal lag. In traditional Chinese calendar, summer starts in early May and ends in early August. Winter starts in early November and ends in early February.
Why does US have seasonal lag? Especially California, the hottest time of the year in California is in September. However, the coldest time of the year in California is December which is the same as most parts of China.
Why does China always start its new season very early?
I don't think that's always true. Look at Dalian and Shanghai for examples of places with a lot of seasonal lag. For inland places it's more true, but that's probably because of the lack of bodies of water like the Great Lakes or Gulf of Mexico as in North America. It seems like differences in seasonal lag between China and the US are more pronounced in summer than winter, and I'm not sure why.
I thought the difference with the China and The US is China cools slower but gets colder than the US in the winter. And warmed at a similar rate as the US in the spring. After reading this, looks like that isn't the case as written in the op. I looked at Beijing's averages, 68/46 in April. That's similar to the Southern US in April, Philadelphia at the same latitude averages at 64/44 in April.
Tough one which is better, but probably have to give the win to China. There is plenty of chilly, cool, and cold weather in the US in autumn, might as well get passed the cool-cold weather/seasons earlier than later. And not drag these seasons longer.
I thought the difference with the China and The US is China cools slower but gets colder than the US in the winter. And warmed at a similar rate as the US in the spring. After reading this, looks like that isn't the case as written in the op. I looked at Beijing's averages, 68/46 in April. That's similar to the Southern US in April, Philadelphia at the same latitude averages at 64/44 in April.
Tough one which is better, but probably have to give the win to China. There is plenty of chilly, cool, and cold weather in the US in autumn, might as well get passed the cool-cold weather/seasons earlier than later. And not drag these seasons longer.
Let's compare Beijing and NYC, they have the same latitude(around 40N).
Although March is very similar for both cities, Beijing starts to warm up very fast in April, and Beijing is much warmer than New York in May(both max and min).
Although Beijing is slightly warmer than NYC in September (because Beijing is slightly hotter than NYC in summer), Beijing starts to cool down very fast in October, and Beijing is 10F lower than NYC in November (MIN). Let's look at October, Beijing's max 66 is still slightly higher than NYC 64. However, Beijing's max 50 is lower than NYC 54 in November. Therefore, Beijing warms up faster than NYC and also cools down faster than NYC.
I don't think that's always true. Look at Dalian and Shanghai for examples of places with a lot of seasonal lag. For inland places it's more true, but that's probably because of the lack of bodies of water like the Great Lakes or Gulf of Mexico as in North America. It seems like differences in seasonal lag between China and the US are more pronounced in summer than winter, and I'm not sure why.
Shanghai is close to the sea, and that's why it is similar to east coast of North America (at lower latitude). Los Angeles temperature is very close to Shanghai in spring even into early summer(June), especially May, it takes a long time for them to warm up. But LA cools down very quickly in autumn, Shanghai doesn't. LA's June 78.1 is even slightly cooler than October 78.5. However, the coldest time in LA is December (67).
Los Angeles:
April: 54/73
May: 57/75
June: 60/78 (June gloom)
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