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Monday was hottest day for global average temperature, as climate crisis bites

theguardian.com

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Re: Monday was hottest day for global average temperature, as climate crisis bites

#31

Earlier quoted context omitted.

the boy who cried wolf is about that

You're mistaken there: "The boy who cried wolf" is about lying about there being a wolf while it isn't, not about speaking the truth but nobody wanting to listen. Edit: check for yourself if you like: https://en.wikipedia.org/wiki/The_Boy_Who_Cried_Wolf

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Re: Monday was hottest day for global average temperature, as climate crisis bites

#33

[flagged]

> By that logic Only if you've got a Sean Hannity level of understanding of climate change.

A hot day is purely anecdotal data. It's hype, often selecting records that mean nothing.

Re: Monday was hottest day for global average temperature, as climate crisis bites

#35

Earlier quoted context omitted.

You're mistaken there: "The boy who cried wolf" is about lying about there being a wolf while it isn't, not about speaking the truth but nobody wanting to listen. Edit: check for yourself if you like: https://en.wikipedia.org/wiki/The_Boy_Who_Cried_Wolf

i think you misjudged this as a climate denialist comment. it's not. the boy who cried wolf was about someone stirring hysteria so much it desensitized people beyond the point of caring when the threat was actually existential. it's not a perfect analogy but basically we've been crying wolf for decades (focusing on the wrong things: denuclearization, air quality, ozone layer, full-electric cars; vs. energy density, d…

Climate change is such a slow-moving massive-scale issue of course there's going to be decades and decades of observational reporting on its myriad effects.

The boy who cried wolf is about telling fibs ruining one's credibility, it's entirely different.

Our news sources shouldn't suppress reporting slow-moving disasters just because humans have a short attention span.

Re: Monday was hottest day for global average temperature, as climate crisis bites

#36
post #21

How does someone measure the average global temperature? And what does it means? The Wikipedia[0] has one interesting source[1] but what they show there isn't an average. My guess would be that somehow satellites can measure the surface temperature and use that to make an average? I would be very happy if someone could some point me to some explanations about this process. [0] - https://en.wikipedia.org/wiki/Global_s…

Earth-observing satellites can measure surface temperature with so-called "thermal infrared" bands. I am unsure on the exact process typically used to go from that map to a global average, but that's a likely starting point.

Re: Monday was hottest day for global average temperature, as climate crisis bites

#37
It bears repeating, the carbon dioxide/methane doesn't have any impact on global warming (troposphere warming?) until it reaches sufficient height.

It takes 2-3 years for the methane to reach those heights, and 20+ for the carbon dioxide. The average increase in temperature we have now is caused by 2003's emissions.

Other informations about how all this work (basic, incomplete, but better than what I usually hear):

Greenhouse effect doesn't really work like a greenhouse.

  Basically, to be in a balanced system, earth has to re-radiate all the energy it gets from the sun. The energy a body radiate depends on its temperature (plank's law). Earth need to reach 255K (-18 basically) to radiate all it gets from the sun. The nitrogen, dioxygen and argon in the atmosphere do not prevent that radiation, but water (especially) and Co2 do.


 This basically make that earth cannot radiate the energy it gets at ground level (that's the greenhouse effect) and has to radiate the energy where the atmosphere is thinner, a few kilometers up, where the concentration of both Co2 and h2o is lower (concentration here as particle per m3). So the earth has to heat all the atmosphere until that altitude (where GHGs do not block radiation anymore) reach 255K.


  So, when the Co2 concentration above that point rises, the altitude the radiation occurs rises too. But that altitude is colder, it cannot radiate as much energy as it gets from the sun. So the atmosphere heat up a bit, until that new altitude reach 255k.

Obviously it's a lot more complex, with reflection, absorption spectrum of molecules... There is also more than one GHG, there is stratosphere effect, but this explain way better than 'we live in a big greenhouse'.

Does that make sense? First time I do this in writing and in English?

I'll take every correction that will not make the explanation too hard (unless I'm flatly wrong and lying instead of vulgarising).

Re: Monday was hottest day for global average temperature, as climate crisis bites

#38

Earlier quoted context omitted.

You're mistaken there: "The boy who cried wolf" is about lying about there being a wolf while it isn't, not about speaking the truth but nobody wanting to listen. Edit: check for yourself if you like: https://en.wikipedia.org/wiki/The_Boy_Who_Cried_Wolf

i think you misjudged this as a climate denialist comment. it's not. the boy who cried wolf was about someone stirring hysteria so much it desensitized people beyond the point of caring when the threat was actually existential. it's not a perfect analogy but basically we've been crying wolf for decades (focusing on the wrong things: denuclearization, air quality, ozone layer, full-electric cars; vs. energy density, d…

[dead]

Re: Monday was hottest day for global average temperature, as climate crisis bites

#39
post #21

How does someone measure the average global temperature? And what does it means? The Wikipedia[0] has one interesting source[1] but what they show there isn't an average. My guess would be that somehow satellites can measure the surface temperature and use that to make an average? I would be very happy if someone could some point me to some explanations about this process. [0] - https://en.wikipedia.org/wiki/Global_s…

The source of the data is https://climatereanalyzer.org/clim/t2_daily/ according to https://www.bloomberg.com/news/articles/2023-07-04/world-rec...

I wonder how a story like this gets picked up.

Re: Monday was hottest day for global average temperature, as climate crisis bites

#40
post #34

I believe Temperature is now a politicized measure, therefore it forever impossible to know it's true value.

Does it mean that if my thermometer shows 10C it might be lying because of its political bias? Or did you miss an “/s” and I the sarcasm?
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