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The long rainy season continued, and one day Zhou Rong angrily roasted her only coat on the fire: "What the hell is this climate, it rains every day, it is dark and flooding, I think the tropical rainforest climate zone is not so exaggerated, otherwise how will the people of Singapore, Malaysia, and those countries live." ”

Fang Jinyan explained: "In fact, the tropical rainforest area is only a long rainy season, the frequency of rainfall and the amount of rainfall is relatively large, generally speaking, the annual rainfall is about 2000 mm, for example, you say Singapore, the average annual rainfall is about twice that of Shanghai, and the most rainfall in the world is not the rainforest climate zone, but the Southeast Asian Chera Pengzi, the annual rainfall has exceeded 20,000 mm, there is also a tropical monsoon climate zone, there are about 4 months of rainy season every year, Almost all of the rainfall is concentrated in those months. ”

"And how long is the rainy season here? Is it also four months? Zhou Rong asked with an expression of "I can't stand it".

Fang Jinyan shook his head and said: "I don't know, I remember I have said before, the rainy season and the dry season in the tropical monsoon region, the time is not the same, it depends on the location, generally speaking, the closer to the equatorial low pressure zone, the longer the rainy season, and even the rainy season all year round, this is the tropical rainforest climate." And the closer you get to the subtropical high pressure zone near the Tropic of Capricorn, the longer the dry season, the most extreme case. There is no rainy season at all, and it has become a tropical desert climate. Of course, this is just a general idea. In fact, the distribution of the oceans and land also has a great influence on the climate."

"Don't play the piano to the cow, I don't understand it at all, so I want to get away from the damn weather." Zhou Rong said depressedly.

Actually, it's not that she doesn't understand. I just don't want to care about these inconsequential things, because even if I figured it out, I couldn't make her clothes dry immediately, and I couldn't make the musty smell on her body disappear immediately

To be honest, if you change to someone else, according to her temper, she will directly throw a sentence "What's the use of you Rory, talking a lot?" ”。

But on the other side was Fang Jinyan, and she didn't dare to say so.

Suddenly, she remembered something again, and asked Fang Jinyan, "When the sun came out a few days ago, what did you do with a wooden stick to measure the shadows on the ground?" ”

"My latitude here." Fang Jinyan said.

"Oh." Zhou Rong didn't have much reaction.

In the past, when she heard someone say this, she would have opened her mouth wide and asked, "You can measure latitude with these sticks?" But now the other party is cautious. She's no longer surprised, he's a perverted agent, whatever he says is good, there's no need to waste expressions.

Anyway, she knew that when the time came, he would definitely answer, "Actually, it's not difficult, ancient people can measure it without a scientific basis" or something like that.

"And what did you get out of it? How many degrees? "She's not interested in the process, she's a little interested in the outcome.

"About 21 degrees north latitude is roughly equivalent to the latitude of the Hawaiian Islands." Fang Jinyan saw that Zhou Rong was at a loss, and added another sentence.

"It's such a good latitude, and the climate is far from Hawaii!" Zhou Rong said with great grief and indignation.

“”

"By the way, you said it last time. How many degrees is the Tropic of Cancer," Zhou Rong suddenly remembered and asked.

"About 23.5 degrees." Fang Jinyan said.

"Isn't that very close to the temperate zone, why is the weather still so hot, the dry season was dry and hot before, and now it is humid and hot," Zhou Rong said through gritted teeth again.

"It's not really like the lower the latitude, the hotter it gets. In fact, the hottest places on earth are near the Tropic of Cancer, because this belongs to the subtropical high-pressure zone," Fang Jinyan knew that the other party couldn't listen to at all. Or explained.

"Oh, I see." Zhou Rong replied. But her expression showed that she was clearly not listening.

"What latitude is Asuka Island?" Zhou Rong asked again.

"It seems to be about 30 degrees north latitude." Fang Jinyan replied.

"That means we're nine degrees off, right? It doesn't seem like a lot. Why did it suddenly go from temperate to tropical? Zhou Rong asked.

She saw Fang Jinyan's expression a little weird, and she added unconfidently: "I'm not wrong, right?" 30 minus 21 equals 9, can't latitude be directly subtracted? ”

"It's 9 degrees, yes, but 9 degrees is already very big, and the latitude gap between Hangzhou and Guangzhou is almost 9 degrees." Fang Jinyan said.

"Is there anything else you've discovered?" Zhou Rong knew that she was embarrassed again, so she quickly pretended to have nothing to do and changed the topic.

"Yes, I'm pretty sure now that this should still be Earth." Fang Jinyan said.

"Really? That's great! Zhou Rong said with great joy. In her opinion, as long as she is still on Earth, the probability of her being able to return home is much greater, and she can see her parents, parents and grandfather, and if she travels to an alien planet or some other troubled place, then she may really never go back.

"If there are no surprises, it should be." Fang Jinyan said.

"And how do you know for sure?" Zhou Rong asked curiously. Originally, she was not so curious, but this matter was very important to her, so she asked.

"The Earth's orbital period is 365.25 days, and the result I calculated before was about 364 days, considering the problem of the tool, this result is within the margin of error, and then you should also feel that the time of the day here is almost 24 hours, and the relatively more accurate results of my calculation also support this, that is, the orbital period and the rotation period are basically exactly the same, so if nothing else, we should still be on the earth." Fang Jinyan said.

In fact, he also observed and measured the positions of many stars and the rare appearance of the moon before he dared to make this conclusion, but he knew that Zhou Rong was not interested in listening, so he didn't say much.

Originally, he was going to tell everyone this information tomorrow, but since Zhou Rong had just asked, he would tell her in advance.

The main thing is to know that she is in a bad mood these days, so give her a good news to make her happy.

After all, it is very troublesome for relatives to come on this desert island.

Fang Jinyan is not a voyeur, but for him, this kind of thing is too obvious, and he can see it even if he doesn't want to know (the novel "The Last Chemist" will have more fresh content on the official WeChat platform, and there will also be a 100% lottery gift for everyone!). Open WeChat now, click on the "+" sign in the upper right corner "Add Friends", search for the official account "ddxiaoshuo" and follow, hurry up! (To be continued......)