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Study warns of longer extreme heat periods by century's end_我的网站

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A | (ECNS) -- Hot days worldwide could experience around four additional hours of extreme heat by the end of the 21st century under a high-emissions scenario, according to a study led by Chinese researchers. Published in Nature Climate Change, the study found that traditional daily temperature indicators may overlook shorter periods of extreme heat, while hourly temperature analysis can provide a more detailed picture of heat exposure and associated risks. Researchers from Sun Yat-sen University and other institutions analyzed global hourly temperature data from 1981 to 2023, combining observational records with climate model projections to assess how extreme heat exposure could change in the future. The research team found that the duration of extreme heat increased by 62 hours per decade over the study period. Around 28% of extreme heat events occurred on days that would not have been classified as hot days based on conventional daily temperature indicators. Under a high-emissions scenario known as SSP5-8.5, the researchers projected that between 2070 and 2099, each hot day could experience around four additional hours of extreme heat compared with the 2001-2023 period. Days not classified as hot could also see increased periods of extreme heat. The study also found that low- and middle-income countries account for a disproportionately large share of both current and projected extreme heat exposure. Younger generations in low-income countries are expected to experience the greatest increase in lifetime exposure. Researchers said the findings could help improve heat-warning systems, strengthen assessments of health risks and support climate adaptation efforts. (By Helen Mo, intern Liu Shuangjing) 。

　阿里云优惠券先领券再下单前面有写过一篇瀑布流的采集方法，今天在添加一个POST方法来采集Ajax刷新页面的教程。之前的文章请看：火车头采集动态加载Ajax数据（无分页瀑布流网站）如果遇到POST方法来架子Ajax数据，这和我之前写的是两个类型，瀑布流是直接刷新出数据的页面。采集网站分析采集任何一个新站前我们都要对他进行一番分析才好下手。列表页分析这个网站的列表页，前面并不是通过Ajax加载的。

B | CTRL+U可以直接看到列表内容，通过浏览器也看不到相关请求地址。

因为习惯原因，我直接看了下尾页列表页。

C | 然后顺手CTRL+U看看网站代码结构有没有大的变化。防止后期采集出错。结果就发现无法看到列表内容。浏览器可以看到一个通过post请求的地址。

这时候就意识到这网站列表页可能后面的应该全是通过Ajax加载的。

D | 通过笨方法，手动访问页面看看Ajax加载大概是哪些。最后找到大概从2200页左右开始Ajax加载。那我们采集的时候，前面的列表页就可以使用普通方式去采集（速度更快）。 2200页开始到尾页就通过post请求Ajax页面数据。抓包获取Post数据这个Ajax地址我在浏览器看不到任何跟页码有关的数据。最后只能使用抓包工具看一下详细的请求内容了。

使用抓包工具Fiddler Fiddler下载地址：OneDrive-Fiddler-Setup_v5.0.20204.45441.zip 安装设置完成后我们打开浏览器。重新访问一下采集页面，Fiddler会抓到很多请求地址。查看分析Post数据 Ctrl+F 我们搜索那个Ajax地址火车头使用Post方法采集Ajax页面教程