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submitted 2 years ago by Zerush@lemmy.ml to c/green@lemmy.ml

But percentages in the stock market seem to be more important to efficiently combat climate change.

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[-] quinkin@lemmy.world 71 points 2 years ago

Heat index or apparent temperature is not the same as actual temperature. Would still suck but at least you aren't being pasteurized.

[-] GodIsNull@feddit.de 40 points 2 years ago
[-] grasib@lemmy.world 43 points 2 years ago* (last edited 2 years ago)

You’re right, context is important here.

The image came from a twitter post. „Heat index“ means basically „Feels like“.

https://www.timeanddate.com/weather/iran/bandar-abbas/historic?hd=20230808

Doesn’t mean it was fucking hot tho.

[-] bouvin@lemmy.world 12 points 2 years ago
[-] Kidplayer_666@lemm.ee 4 points 2 years ago

The heck is “heat index”

[-] ourob@discuss.tchncs.de 17 points 2 years ago
[-] ninjan@lemmy.mildgrim.com 12 points 2 years ago

Jesus Christ, 158 F heat index is so far out of bounds on that scale it's insane. What's after "Extreme Danger"? "People will die"? "Being outside is suicide"?

[-] Anafabula@discuss.tchncs.de 15 points 2 years ago* (last edited 2 years ago)

A [wet-bulb temperature] reading of 35 °C (95 °F) – equivalent to a heat index of 71 °C (160 °F) – is considered the theoretical human survivability limit for up to six hours of exposure.

[-] novibe@lemmy.ml 17 points 2 years ago

Ah phew. It’s just the absolute limit for human survivability 😮‍💨

[-] AcesFullOfKings@feddit.uk 0 points 2 years ago

It's when it feels really hot and you look at the thermometer and think, "wow is that it? I better arbitrarily add a few more degrees so people know it's really hot"

[-] library_napper 28 points 2 years ago

Down voted. Please repost with a link to the source. We're better than this.

[-] Zerush@lemmy.ml 8 points 2 years ago* (last edited 2 years ago)
[-] tiredofsametab@kbin.social 13 points 2 years ago

A heat index is not an actual temperature reading. This is disingenuous and people whom don't want to believe in things like climate change will latch on to and discredit people for things like this.

[-] FReddit@lemmy.world -1 points 2 years ago

People who.

But the point is we'll taken. It seems like a really misleading headline. That doesn't help things at all.

[-] AcesFullOfKings@feddit.uk 2 points 2 years ago

If you're gonna correct someone else's grammar, you better make sure your own grammar is squeaky clean first, lol.

[-] FReddit@lemmy.world -1 points 2 years ago

And I can't fix it for some reason

[-] library_napper 2 points 2 years ago

Thanks, but the point is it needs to be the main link in the posting

[-] I_Miss_Daniel@kbin.social 3 points 2 years ago

Would like to see the option to add "Misleading Title" to articles, similar to what used to exist on "R". Not enough people downvote misleading stuff.

[-] library_napper 1 points 2 years ago

More like "image posted without a link to the source to verify it"

[-] I_Miss_Daniel@kbin.social 1 points 2 years ago

To me it was disingenuous to claim it was 70°C when it only "felt like" 70°C.

[-] sci@feddit.nl 19 points 2 years ago

probably faulty sensor, there's no way the temp is 15 degrees higher than the current highest temperature ever measured

[-] Hyperreality@kbin.social 16 points 2 years ago

What was the actual temperature? Heat index is something different.

[-] Zerush@lemmy.ml 19 points 2 years ago

The real temperature are 58ºC, but relevant is the index, that is, how we percive the temperature. With a dry air you can support more than 70º (eg in a Sauna), but with high air humidity, which evite the evaporation cooling by your sweat, even 50ºC result lethal in a short time, rising corporal temperature over 43ºC. Because of this, it's the index which is the relevant value, not the one shown by the thermometer.

[-] Sterile_Technique@lemmy.world 16 points 2 years ago* (last edited 2 years ago)

With a dry air you can support more than 70º (eg in a Sauna), but with high air humidity, which evite the evaporation cooling by your sweat

You got that flipped.

With dry air, your sweat can evaporate. Evaporation consumes energy, and thus has a cooling effect, making high temperatures more bearable/survivable at low humidity.

With humid air (eg in a sauna) your sweat cannot evaporate because the air is already saturated. This deprives you of the cooling effect, making humid conditions feel much hotter; and making it lethal much faster and at lower temps.

[-] Pulptastic@midwest.social 12 points 2 years ago

I see the confusion. A sauna is not necessarily humid, traditional Finnish sauna are hot but not high humidity. You're thinking of a steam sauna which is high humidity but lower temperature.

https://en.m.wikipedia.org/wiki/Sauna

[-] Sterile_Technique@lemmy.world 2 points 2 years ago

Oh, fair enough. I had no clue that there was even such a thing as a steamless sauna.

[-] Dubious_Fart@lemmy.ml 7 points 2 years ago

Yep.

100f+ degree weather with zero humidity? Sweat evaporates so quickly that with a fan on you or a breeze you can actually feel briefly chilled at times.

[-] Hyperreality@kbin.social 9 points 2 years ago* (last edited 2 years ago)

I know. There's also this:

https://en.wikipedia.org/wiki/Wet-bulb_temperature

But mentioning the actual temperature is less misleading.

With a dry air you can support more than 70º (eg in a Sauna), but with high air humidity, which evite the evaporation cooling by your sweat, even 50ºC result lethal in a short time,

Over 90C dry, 50C wet, 10-15 minutes. Longer/hotter if you take dips in cold water to cool down or if you're Finnish. They sometimes go over 100C, they're used to it.

[-] Oaksey@lemmy.world 1 points 2 years ago

Is hot but Washington Post article says the temperature in recent weeks has got as high as 51C and all time max is 54C. Where are you getting 58C from?

[-] who8mydamnoreos@lemmy.world 14 points 2 years ago

It would be amazing if some how the heat would cut off access to the persian gulf, it would definitely push the world to think of alternative energy

[-] MelastSB@sh.itjust.works 7 points 2 years ago

As if, they'd look for alternative routes

[-] who8mydamnoreos@lemmy.world 2 points 2 years ago

Choking off that straight would absolutely grind to a halt the economic engines of every asian major power faster than they could find a solution to exporting the hundreds of millions barrels a day though that hostile environment.

[-] overzeetop@lemmy.world 11 points 2 years ago

Dew points of 90-95F? JFC that’s nuts.

[-] pH3ra@lemmy.ml 7 points 2 years ago

The title is a little clickbait-y: Heat Index is different from Temperature and not everyone knows that.
While it's still bad, it sensationalizes the matter and this can be used against you from people that have a different opinion on the subject.

[-] FReddit@lemmy.world 1 points 2 years ago

You are right. That was pretty bad.

this post was submitted on 12 Aug 2023
267 points (79.3% liked)

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