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World ocean temperatures in 2021 were the hottest ever recorded

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Re: World ocean temperatures in 2021 were the hottest ever recorded

#11

Post by jvanderbot »

the-dude wrote: post #5

Since 1940. Or 1958. Or is it 1995? Why does the graph have 2 colors? Why is 1995 'zero'?

It's relative to 1981-2010 baseline. Negative is lower, positive is higher. In 1995, presumably, it was also the average temperature for the 1981-2010 time.

The two colors are negative and positive, a potentially unimportant dramatization.

Clarifying based on what I understood: Data from 1940-today show that the period from 1985-today had 8x more heat added than the period from 1958-1985, and that each decade since 1958 has increased in temperature.

Re: World ocean temperatures in 2021 were the hottest ever recorded

#12

Post by wsinks »

horstmeyer wrote: post #4
matsemann wrote: post #3

Forecasts for +10C in Oslo Norway the next days, possibly melting all the snow and ruining skiing in the forests during lockdown, my best reason to go outside at the moment..

Too bad you can't go skiing, but I'm a bit more worried about plant and wildlife that "thinks" it's spring and then will get killed when it gets cold again later.

That would be my worry too! I wonder if the next step is to figure out if there's any sort of regularity of the newer climate and to find plants that might be able to support those time cycles..

Re: World ocean temperatures in 2021 were the hottest ever recorded

#14

Post by irrational »

KETpXDDzR wrote: post #9

I have the feeling that many people (especially politicians) think that global warming is a linear process. It's not. It might even be exponential since some sources for climate-warming are affected by warmer climate. For example, melting ice that reflects sunlight back to space [ https://arcticwwf.org/places/last-ice-area/ ]. I'm thinking about choosing a new place to live right now. Climate change is a big factor f…

Personally I would not buy property south of the 45th parallel anymore (in the northern hemisphere). Even north of that we have seen shockingly high temperatures. Anything south of that will become a hellscape within our lifetime.

Re: World ocean temperatures in 2021 were the hottest ever recorded

#16

Post by matsemann »

mrjangles wrote: post #8

Not only does science show the current temperatures are getting hotter than ever. We now know the past 50 years was colder than we ever thought. With new advanced scientific techniques, we now have a much better idea what the temperature was 50 years ago than they did 50 years ago. It should be kept in mind, these new temperatures measured now are not breaking records compared to the temperatures measure 50 years ago…

I don't understand this. How / why is near-historic data being changed? Got any more material on this?

Re: World ocean temperatures in 2021 were the hottest ever recorded

#17

Post by galangalalgol »

irrational wrote: post #14
KETpXDDzR wrote: post #9

I have the feeling that many people (especially politicians) think that global warming is a linear process. It's not. It might even be exponential since some sources for climate-warming are affected by warmer climate. For example, melting ice that reflects sunlight back to space [ https://arcticwwf.org/places/last-ice-area/ ]. I'm thinking about choosing a new place to live right now. Climate change is a big factor f…

Personally I would not buy property south of the 45th parallel anymore (in the northern hemisphere). Even north of that we have seen shockingly high temperatures. Anything south of that will become a hellscape within our lifetime.

Latitude will have less impact than altitude from the projections I have seen. Bogota may be less impacted than Anchorage.

Re: World ocean temperatures in 2021 were the hottest ever recorded

#18

Post by willio58 »

Is anyone on HN reconsidering having children because of climate change? Recently I've had a big shift myself on this topic, probably influenced by not many women my age (younger than 30) having any interest in bringing a child into a world where they could potentially suffer real physical danger due to climate change.

Re: World ocean temperatures in 2021 were the hottest ever recorded

#19

Post by jvanderbot »

mrjangles wrote: post #8

Not only does science show the current temperatures are getting hotter than ever. We now know the past 50 years was colder than we ever thought. With new advanced scientific techniques, we now have a much better idea what the temperature was 50 years ago than they did 50 years ago. It should be kept in mind, these new temperatures measured now are not breaking records compared to the temperatures measure 50 years ago…

That article is not convincing. The X- and Y-axes change in those plots, producing a misleading animation. Also, all plots clearly show warming trends that are accelerating.

Re: World ocean temperatures in 2021 were the hottest ever recorded

#20

Post by trentnix »

irrational wrote: post #14
KETpXDDzR wrote: post #9

I have the feeling that many people (especially politicians) think that global warming is a linear process. It's not. It might even be exponential since some sources for climate-warming are affected by warmer climate. For example, melting ice that reflects sunlight back to space [ https://arcticwwf.org/places/last-ice-area/ ]. I'm thinking about choosing a new place to live right now. Climate change is a big factor f…

Personally I would not buy property south of the 45th parallel anymore (in the northern hemisphere). Even north of that we have seen shockingly high temperatures. Anything south of that will become a hellscape within our lifetime.

Bet.
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