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  • Hacker News
  • Cities being resilient is one thing. It won't contribute to make agriculture resilient.
    by Juliate
  • Many cities are heat sinks and make the problem worse locally due to lack of tree cover and an overabundance of concreta and tar.
    by nephihaha
  • This is far outside of my wheelhouse, but I have some serious questions about the methodology here.

    I dug into what they call a "resiliency checklist", which is what looks to be a set of questions that have qualitative answers which are subjective at best. This information looks like it is fed into the CRRI, the data set that substantiates the city-wide scores used to power this report.

    I am very skeptical that these 2 things happened:

      - They captured a representative set of key assets that go into making a "city"
  - The answers they received are calibrated or are meaningful enough to make these large conclusions
    by ryanisnan
  • Chicago resident here.

    Not disputing the methodology, but our state is the nation's leader in tornadoes (by more than a factor of 2) due to Niña/Niño this year, and Chicago spent a few days this summer with the world's worst air quality due to Canadian wildfire smoke.

    Obviously, "resilient" ⍯ "unaffected".

    by hamburga
  • For a USA county level assesment of climate risk I reccomend this site https://map.climatevulnerabilityindex.org/map/cvi_overall/us...
    by waterthrowaway
  • How is Miami not near the bottom of the list? Every time there is a moderate rainfall, streets flood like crazy. Plus we are in hurricane alley, and some models project that most of the Florida peninsula will be under water in 50-100 years.
    by drewg123
  • São Paulo is in the "green" but they were supposedly around two weeks from running out of water for municipal distribution in 2014/2015. A city of that size without water would not do well.

    https://en.wikipedia.org/wiki/2014%E2%80%932017_Brazilian_dr...

    https://www.smartcitiesdive.com/ex/sustainablecitiescollecti...

    EDIT: added timeframe

    by nwatson
  • There's a very cool project wrapping up here in Zurich where they built a relief tunnel from the sihl river underground downhill to lake Zurich to handle 500-years floods.

    One weekend they let people walk the length of the tunnel from the river to the lake. It was a pretty steep slope and about 3/4 down the walls of the tunnel changed from smooth to rough. They had calculated how fast the water would be moving when it hits the rough part and then how much that would slow it down.

    Then at the bottom instead of emptying directly into the lake it comes flying out of the tunnel and smashes into a giant cement wall then flows under a roadway into the lake.

    Cost was $200 million. A 500-year flood would flood downtown Zurich.

    https://www.zh.ch/de/planen-bauen/wasserbau/wasserbauprojekt...

    by comrade1234

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