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In GCAM V 5.2: Equation behind the calculation of Transport service output by service in million pass/km or million ton/km from transport final energy demanded in EJ #411
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Here's the equation, from R/zenergy_L254.transportation_UCD.R |
Ahh.....this |
Hello @pkyle ! Might I kindly inquire if you possess knowledge regarding the 'coefficient: exogenous input-output coefficient, measured in BTU per vehicle-kilometer'? I am keen to ascertain where one might access such a coefficient. Your assistance in this matter would be greatly appreciated |
It's in the input file
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Right. Thanks a lot. I owe you! |
Just realizing seeing this, the transportation sector consists of a mix of |
Yeah, thanks, I also discovered this. So here is a thing: My larger objective is to mimic this S surve in transportation sector, because as far as I know, there is no option to saturate or introduce this S-curve. Vehicle Ownership grows exponentially with income. **Therefore, in order to mimic this real world behaviour, Would it be feasible to do 2 things:
Do you have any comments on my suggestion or would you like to recommend some other levers to mimic this in GCAM? |
It sounds like you've identified some levers to adjust, and it's the sort of thing where the model's output just needs to be checked, and adjustments made, as necessary, in order to construct a coherent and defensible future transportation scenario. Note that in many regions, the assumed speed for LDVs is pretty low, so there isn't that strong of an incentive towards vehicle ownership as incomes increase. To some extent these low vehicle speeds reflect existing congestion and infrastructure quality, which might be expected to increase in the near/medium term due to investment, but then might subsequently decrease, as future growth in service demands leads to congestion. |
Hello! I am seeking assisstance in knowing how the two queries 'transport total final energy by service' and 'Transport service output by service' are linked? What equation is employed in the background.
My objective is to understand the calculation of Transport service output by service, which is in million pass/km or million ton/km unit (depending on pass or freight) from the transport final energy demanded, which is in EJ.
From the documentation, I can figure out there is some load factor if a vehicle is employed, however, not clear what else and how exactly is it employed.
Assistance is highly appreciated!
@gokuliyer @joint Global Change Research Institute @JGCRI
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