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Occasional Thoughts on Climate Change


donsutherland1
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1 hour ago, tacoman25 said:

And yet we've seen an overall decline in violent crime since the 1980/90s, despite warming temps.

it's just a relative comparison to other seasons.

I can agree with your statement because the 1990s saw the most extreme heat and longest heatwaves here.

By the way, when did you move to Colorado?

Did you move there to see more snow?

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9 hours ago, donsutherland1 said:

Phoenix has a five-year master plan for expanding trees/shade. The City is aware of the growing risks its people face from increasingly frequent and intense heat.

https://www.phoenix.gov/content/dam/phoenix/heatsite/documents/ShadePhoenixPlan_Nov13CouncilDraft_topost_EN.pdf

It’s difficult for many of us who are cold and snow enthusiasts to understand why so many people choose to move to a place like Phoenix with such intense heat. I would enjoy visiting that region during some of the cooler times of the year since the Desert Southwest is one of the most beautiful parts of the country. You wonder how much more heat and drought it would take to actually slow the influx of new people into the area. In the mean time I hope they do all they can to try and expand the trees and shade. 

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2 minutes ago, bluewave said:

It’s difficult for many of us who are cold and snow enthusiasts to understand why so many people choose to move to a place like Phoenix with such intense heat. I would enjoy visiting that region during some of the cooler times of the year since the Desert Southwest is one of the most beautiful parts of the country. You wonder how much more heat and drought it would take to actually slow the influx of new people into the area. In the mean time I hope they do all they can to try and expand the trees and shade. 

I have a cousin out there. She has indicated that the City has a lot to offer, including culture, history, and nature. However, she has increasingly complained about the rising heat. 

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Portland, OR appears to be headed for an extreme heat event (Clarke et al., 2014 methodology) for the fifth year in a row. The City has been experiencing a rise in 90° and 95° days in its warming climate. 90° days are increasing by 1.45 days per decade. 95° days are increasing by 0.72 days per decade. Moreover, in Portland's warming climate, the 30-year mean June-September high temperature reached 78.0° in 2014. The frequency of extreme heat events has increased markedly to about once every 2.2 years (2014-2024). Prior to 2014, extreme heat events occurred once every 7.3 years.

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25 minutes ago, A-L-E-K said:

she's right

will be ruins in less than a decade once we enter the post the air-conditioning era

On a serious note, there is genuine longer-term risk that the City could pass the point of sustainability, particularly if ongoing aridification depletes its access to water. 

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14 hours ago, donsutherland1 said:

I have a cousin out there. She has indicated that the City has a lot to offer, including culture, history, and nature. However, she has increasingly complained about the rising heat. 

Most people who moved out to Phoenix did it with the understanding that they would have to reduce outdoor activities as the later morning and afternoons approached.

But what they are finding now is that even the early mornings for extended stretches are becoming too warm to do even basic outdoor exercise like walking.

The record number of 90° minimums this decade in the urban center has probably forced many to do more indoor exercise like the treadmill during the times of peak heat. 20-40 days with 90° minimums has become the norm during the 2020s.

 

Time Series Summary for Phoenix Area, AZ (ThreadEx) - Jan through Dec Top 5 years with 90° minimums
Click column heading to sort ascending, click again to sort descending.
1 2024 39 0
2 2023 35 0
3 2020 28 0
4 2025 21 132
5 2013 15 0
- 2003 15 0
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15 hours ago, LibertyBell said:

it's just a relative comparison to other seasons.

I can agree with your statement because the 1990s saw the most extreme heat and longest heatwaves here.

By the way, when did you move to Colorado?

Did you move there to see more snow?

I've lived in CO for nearly 20 years. Moving here had little to do with the weather, but I do enjoy the frequent snowfall.

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