Hi Stacie
Many thanks for summarising the workflow – this works.
Now I can get on with trying to apply the model to rural contexts.
Kind regards
Richard
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Hi, now I have got the model running, could I ask for your feedback on some preliminary results applying the UC model in a rural context.
I have 2 queries:
- HMI result:
Firstly, I’m happy to get a result showing greater CC for clumps of trees than the neighbouring pasture:
Each of the tree clumps (red) shown here are greater than 2 hectares. But the resulting HMI tif shows no differentiation:
Any suggestions what parameters I could concentrate on to here in order to register a result?
FYI - Here is the Biophysical Table, with the two relevant LULC classes highlighted
- Dcool calculation:
Equation 106 refers to Dcool as the distance over which a green space has a cooling effect. Sorry if I’m missing something, but I don’t see any reference to how to estimate this distance. Can you please advise?
Many thanks
Richard
Hi - it would be great to get some feedback / suggestions on my query posted August 17.
Many thanks
Richard
I just pinged the model creators again to address your questions. Hopefully, they reply here soon, but please be patient as people’s summer travel schedules are busy.
-Jesse
Hi @Minton71 ,
I’m passing on feedback here from one of the scientists who helped create this model.
For cooling distance, they’ve used 500 and 600 meters. This is consistent with several studies, including this one which states, “Guided by published values of this radius of influence of landscape composition on air temperature, we tested each 100-meter interval between 100 and 1000 m to evaluate the impact of radius on model efficacy (Oke, 2006; Schatz and Kucharik, 2014)… This approach yielded an urban heat island model with a 600 m radius of analysis.”
- Oke, T. R. (2006). Instruments and Observing Methods Report No. 8 (No. 81; p. 47). World Meteorological Organization.
- J. Schatz, C.J. Kucharik. Seasonality of the urban heat island effect in Madison, Wisconsin. Journal of Applied Meteorology and Climatology, 53 (10) (2014), pp. 2371-2386.
Additionally, I was warned that this “model is NOT designed to be used in non-urban settings as there is unlikely to be much of a cooling effect despite the added bonus of the trees.”
-Jesse
Hi Jesse
I appreciate your feedback.
Understand your team are possibly on summer break, but would really appreciate a more scientific expansion on the comment about the model not being designed for non-urban setting. As you know, the aim of the exercise is to test the model in a non-rural scenario. Given the CCI parameters (shade, ET, albedo) still apply, I’m interested to hear where the team think application to a non-rural scenario is problematic. This will possibly allow me to either re-parametrise the model accordingly, or to use the model with stated assumptions.
As per my August 16 enquiry, I would also appreciate suggestions regarding parametrisation to register a result in the HMI mapping. This could be related to the point raised by your scientific team – in any case, I would appreciate more elaboration on this point.
Many thanks
Richard
As we’ve been unable to recruit others to comment on this thread, you can try reaching out directly to Chris Nootenboom or Dr. Eric Londsdorf.
Despite my approval back in June, the Urban Cooling model is not designed to be used in non-urban settings as there is unlikely to be much of a cooling effect despite the added bonus of trees. Unfortunately, I am unable to help you further with this application.
-Jesse
Hi Jesse
Appreciate that comment / suggestion.
Dr. Eric Londsdorf has since provided valuable feedback, so investigation of this non-urban application of the UC model continues.
Regards
Richard
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