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UMEP-dev / SUEWS

Surface Urban Energy and Water Balance Scheme
https://suews.readthedocs.io/
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Issues with ground temperature when using SUEWS-SPARTACUS #100

Closed megstretton closed 5 months ago

megstretton commented 2 years ago

When setting all ground surface (not buildings) as impervious, the ground temperature/paved temperature does not vary when the morphology is changed - for example if SUEWS-SPARTCAUS is used with multiple layers, or if the building fraction is decreased/increased.

sunt05 commented 2 years ago

Hi @megstretton, I had a closer look and found there's actually difference–minimal though–in the surface temperature of paved surfaces between different building coverage scenarios (i.e., building fraction, indicated by colour), which is different from what I recall last time you showed me:

9374beea-76e0-4e4c-b251-41316cd08b05

Anyway, I believe there are more tweaks should do to get this work better.

So maybe you can post your results here for our record and we can then work further on this issue.

megstretton commented 2 years ago

Hi @sunt05. Thanks for looking at this. I've attached two results for a summer day. The first is with varying building fraction at the surface (that is constant up to 25 m with 4 layers) from 0.11 - 0.66. I agree here that there is definetely a difference in ground temperature (paved) although this is small.

test_pavedT_buidlingfrac

The second (below) shows three runs with different numbers of layers - one with a different maximum height - but with the same building fraction. In this case we see only small differences in the paved surface temperature.

test_pavedT_layers

sunt05 commented 5 months ago

Hopefully, my answer above addresses this issue, so I'll close it for now. Otherwise, feel free to re-open and provide more details to help resolve it.