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Joined 1 year ago
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Cake day: June 27th, 2023

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  • The article is about an experiment, where people are exposed to 35°C wet bulb temperatures, but in different settings. Sometimes lower temperatures but higher humidity, sometimes vise versa, but always 35°C wet bulb temperature.

    So far the assumption was, that humans can’t survive a 35°C wet bulb temperature for longer than 6 hours. And at current warming this is unlikely to be naturally the case within this century.

    However the experiment gives hints to believe that humans can’t survive at lower wet bulb temperatures either. It looks like with lower temperatures and higher humidity, humans can get very close to that 35°C wet bulb temperature, however people seem to struggle more with higher temperatures and lower humidity.

    A possible explanation could be, that while more sweat evaporates in lower humidity, the body has a limit for how much sweat it can produce. And if you keep raising the temperature, that the human body simply can’t produce enough sweat to cool itself.

    That’s pretty much what I took away from the article. They mentioned they experiment with several people, however the article was mainly about on person in the experiment, a 30ish year old, athletic male.

    Edit: add some graphs from the article. Sorry for low quality, but as you said, the layout is quite atrocious and on my phone it keeps jumping around on it’s own, so I lost patience.



  • I also thought about wet bulb and checked the humidity in Delhi, which seems to be just 7 % or so. According to wet bulb calculators that’s still good, like around 23 °C wet bulb.

    Interestingly the wet bulb temperature calculators that I tried only work until 50 °C, so that was what I put in.

    At 50 °C you need about 35 % humidity to get to 35 °C wet bulb.

    Regarding your second point: If I’m not mistaken, the hottest month in the region is around May. The temperature is influenced by monsoons, and although the sun peaks higher in summer, it is generally also more cloudy and rain cools of the surface. That’s why usually temperatures peak just before rain season.



  • Very interesting and ambitious mission.

    I just read a little about it. Going to the far side is by far more complicated as going to the side that faces Earth. As communication will be lost as soon as the rocket is behind the moon.

    In order to keep contact, there are 2 lunar satellites launched acting as a bridge.

    The far side is believed to have a very different composition compared to the near side and part of this mission is to find out why.

    Any thoughts, ideas?

    I thought maybe the far side receives much more impacts as it’s not protected by Earth, so maybe has much more “imported” materials from different areas of space while the near side is still much more Earth like. But that would probably just be surface, I don’t know.