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July was the hottest month ever recorded, according to Nasa

nytimes.com

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Re: July was the hottest month ever recorded, according to Nasa

#21
The part I find especially frustrating is that, on average, a New Yorker has a lower carbon footprint than the typical American, probably due to the heavy use of the train.

So even when I do the (I think) eco-friendly thing by not having a car and using public transit, I'm still being punished for what the rest of the US (and the rest of the world) does.

Re: July was the hottest month ever recorded, according to Nasa

#22
post #11

FUD. https://en.wikipedia.org/wiki/Fear,_uncertainty_and_doubt

FUD of what? Generally FUD is used to gain some financial advantage. The only party who has anything to gain from continuing with the economic policies which acerbate climate change are the owners of fossil fuel sources. These constitute billions of dollars of future profit - but only if it's burnt up into the sky. Everyone else is only going to lose in the long term. If one does not understand anything of climate sc…

I am personally acquainted with the dealings of several environmental NGOs. Not climate related, but I extrapolate. And we are talking branches of the biggest NGOs out there.

They have a very big incentive to spread FUD and they do it all the time. They are basically extortion and defamation platforms used as a political lever. At least here. But I very much doubt it's much different elsewhere.

Re: July was the hottest month ever recorded, according to Nasa

#23
post #17

These maps are based on emission trends continuing, assuming no political action will be taken. But wouldn't a hotter world tend to exacerbate emission trends, with human needs for AC and desalination rising, plus forest fires? Moreover, there might be some tipping point for large scale methane release. The 'tail risk' to global warming has appreciable density a long way out.

> These maps are based on emission trends continuing, assuming no political action will be taken. I think this is a very realistic assumption. Global Warming Is Irreversible, Study Says: http://www.npr.org/templates/story/story.php?storyId=9988890...

I think you misread the comment you responded to (only the first sentence and then you assumed the rest?). He asked the opposite. The question asked about the other direction, up/more, not down/less. Goes to show we should hear one another out...

Re: July was the hottest month ever recorded, according to Nasa

#24
post #18
post #8

So 14 of the 15 hottest years ever have taken place since 2000. I'm wondering, if this is the result of global heating due to emissions, why do we see so many new record highs only now? The industrial revolution has been going on already for over 150 years. Why were there so few records broken in, say, 1980 - 1996, and so many in 2000 - 2016?

I think you're misunderstanding the arithmetic. Take a look at https://en.wikipedia.org/wiki/Instrumental_temperature_recor... The Nth "hottest years" are relative to the present day. So in the graph, it looks like 1981 would have been a record hot year - but now it's only the 30th (or whatever) hottest year. If the graph were a completely smooth upward-sloping line, then you'd expect that 15 of the 15 hottest years…

I find interesting, in that graph you are linking, that there is a spike in the years of the second world war.

It would be interesting to know if there is causality between human activity in those years and that spike.

Re: July was the hottest month ever recorded, according to Nasa

#25
post #17

These maps are based on emission trends continuing, assuming no political action will be taken. But wouldn't a hotter world tend to exacerbate emission trends, with human needs for AC and desalination rising, plus forest fires? Moreover, there might be some tipping point for large scale methane release. The 'tail risk' to global warming has appreciable density a long way out.

> These maps are based on emission trends continuing, assuming no political action will be taken. I think this is a very realistic assumption. Global Warming Is Irreversible, Study Says: http://www.npr.org/templates/story/story.php?storyId=9988890...

Irreversible as in "won't fix itself" or in "don't even bother with CO2 extraction [edit: from the atmosphere]"?

Re: July was the hottest month ever recorded, according to Nasa

#26
post #21

The part I find especially frustrating is that, on average, a New Yorker has a lower carbon footprint than the typical American, probably due to the heavy use of the train. So even when I do the (I think) eco-friendly thing by not having a car and using public transit, I'm still being punished for what the rest of the US (and the rest of the world) does.

Even more troubling: we are being punished by what the world did, generations past.

This stuff has, by our standards, long delayed effects.

The implication is disconcerting: a FULL STOP of excessive green house gas emissions right now will have, at best, a notable impact in several decades.

Re: July was the hottest month ever recorded, according to Nasa

#27
post #21

The part I find especially frustrating is that, on average, a New Yorker has a lower carbon footprint than the typical American, probably due to the heavy use of the train. So even when I do the (I think) eco-friendly thing by not having a car and using public transit, I'm still being punished for what the rest of the US (and the rest of the world) does.

[deleted]

Re: July was the hottest month ever recorded, according to Nasa

#28
Found this link with similar maps for Europe:

http://grist.org/climate-energy/the-16-scariest-maps-from-th...

NB from 2012.

Interesting that it actually predicts that the UK will have a distinct benefit from warming when it comes to agricultural productivity.

Re: July was the hottest month ever recorded, according to Nasa

#29

These maps are based on emission trends continuing, assuming no political action will be taken. But wouldn't a hotter world tend to exacerbate emission trends, with human needs for AC and desalination rising, plus forest fires? Moreover, there might be some tipping point for large scale methane release. The 'tail risk' to global warming has appreciable density a long way out.

I'm not sure. Many of the countries with the largest emissions per capita are in regions where houses are heated in the winter and cooled in the summer.

Given that indoor temperature is ~ 20C, the ∆T for heating can be much greater than for cooling, since cold outdoor temp can easily go as low as -20C, while really hot weather won't go much above 40C.

Thus, in a warmer climate where you need less heating in winter and more cooling in summer, you might actually end up using less total power for AC.

Re: July was the hottest month ever recorded, according to Nasa

#30

I didn't know if it was just because I now have a 2 year old, but New York summers have definitely seemed harder to deal with each year I've lived here. Is there a commonly accepted minimum temperature difference threshold that is perceivable by humans? E.g., if summer in 2016 was hotter than 2015 by X, I will notice?

Humans are lousy at comparing temperature differences over the course of a year. What we remember are extreme events: four years ago we had deep snow all winter, last year I only had to shovel twice. Remember when we didn't turn on the A/C except for one week in August?
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