4 ms·

Nights are warming faster than days as Earth heats up

39 points by samizdis 4y ago

bobbylarrybobby 4y ago
Growing up, this is what my dad always commented on about temperature changes (in the NYC area). "Sure, the daily high isn't much higher than when I was growing up, but the overnight temps are crazy high; up in the Hudson Valley, we used to almost need blankets in the summer" Not sure what my point is, other than the fact that, like everything else in the sphere of climate change, if you've been paying attention then nothing is really all that surprising.
- jjtheblunt 4y ago
  I wonder if it's attributable to the asphalt and concrete having proliferated. North of Phoenix, where there are actual mountains and trails, it's super clear that those materials hold heat for a long time after sundown. When hiking/walking trails, just after sundown the temp drops very noticeably as one steps from concrete/asphalt to natural dirt, within a few steps.
  - toomuchtodo 4y ago
    Is there a reason Phoenix (and Arizona in general) doesn’t use road/tarmac coatings to reflect the daytime heat? https://reasonstobecheerful.world/reflective-white-streets-urban-heat-island-effect/ https://reasonstobecheerful.world/reflective-white-streets-u...
    - sparker72678 4y ago
      There are some studies/pilot programs around the idea: - https://www.phoenix.gov/streets/coolpavement https://www.phoenix.gov/streets/coolpavement
    - Originami 4y ago
      White cars, white roofs, white pavements should be mandated in hot areas.
      - jjtheblunt 4y ago
        mandated means more government which is more energy spent, i fear. white roofs are definitely a thing here, and lots of white cars, and like the other post noted they're researching white pavements. i never understand the people who buy black cars in this UV and just heat climate.
        throwaway0a5e 4y ago
        > mandated means more government which is more energy spent, i fear. Mandated also means various degrees of ruining the lives of people who won't get in line which seems pretty drastic over something as petty as paint though.
jimmygrapes 4y ago
Gonna just add my standard "climate denier" take and remind everyone that we've been in something of an "ice age" for a long time relative to mean global temperature (https://www.climate.gov/news-features/climate-qa/whats-hottest-earths-ever-been https://www.climate.gov/news-features/climate-qa/whats-hotte... for a simplistic explanation). Yeah we're accelerating it unnecessarily, but it wasn't going to stay this cold forever regardless. Probably that doesn't make anyone feel better about it, but maybe it does for some.

39 points by samizdis 4y ago

Growing up, this is what my dad always commented on about temperature changes (in the NYC area). "Sure, the daily high isn't much higher than when I was growing up, but the overnight temps are crazy high; up in the Hudson Valley, we used to almost need blankets in the summer" Not sure what my point is, other than the fact that, like everything else in the sphere of climate change, if you've been paying attention then nothing is really all that surprising.

jjtheblunt 4y ago
I wonder if it's attributable to the asphalt and concrete having proliferated. North of Phoenix, where there are actual mountains and trails, it's super clear that those materials hold heat for a long time after sundown. When hiking/walking trails, just after sundown the temp drops very noticeably as one steps from concrete/asphalt to natural dirt, within a few steps.
- toomuchtodo 4y ago
  Is there a reason Phoenix (and Arizona in general) doesn’t use road/tarmac coatings to reflect the daytime heat? https://reasonstobecheerful.world/reflective-white-streets-urban-heat-island-effect/ https://reasonstobecheerful.world/reflective-white-streets-u...
  - sparker72678 4y ago
    There are some studies/pilot programs around the idea: - https://www.phoenix.gov/streets/coolpavement https://www.phoenix.gov/streets/coolpavement
  - Originami 4y ago
    White cars, white roofs, white pavements should be mandated in hot areas.
    - jjtheblunt 4y ago
      mandated means more government which is more energy spent, i fear. white roofs are definitely a thing here, and lots of white cars, and like the other post noted they're researching white pavements. i never understand the people who buy black cars in this UV and just heat climate.
      - throwaway0a5e 4y ago
        > mandated means more government which is more energy spent, i fear. Mandated also means various degrees of ruining the lives of people who won't get in line which seems pretty drastic over something as petty as paint though.

jimmygrapes 4y ago

Gonna just add my standard "climate denier" take and remind everyone that we've been in something of an "ice age" for a long time relative to mean global temperature (https://www.climate.gov/news-features/climate-qa/whats-hottest-earths-ever-been https://www.climate.gov/news-features/climate-qa/whats-hotte... for a simplistic explanation). Yeah we're accelerating it unnecessarily, but it wasn't going to stay this cold forever regardless. Probably that doesn't make anyone feel better about it, but maybe it does for some.