Study Area Definition

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6 comments

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    DougO
    The logical region includes the labor market area (where most of the workers reside). Sometimes it is necessary to do a smaller region if, for example, the study is being done for the county that comissioned it. If a pitch is made to the state for subsidy, you may want to use a state model. Generally, the larger the region the larger the impact, but it is usually the intended audience of the report that determines the region.
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    soniawatts
    Thanks!
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    DougO
    I would think an airport would wish to show its impact on it entire service area. However, the multipliers are designed to show the impacts of the goods and services (and resulting backward linkages) purchased by the sector being modeled. Airport operations will have an impact, but those impact will not capture forward linkages. For example, UPS relies on airport transportation and is a forward linkage (a purchaser) of air service. Its offices (warehousing and administrative) at the airport would likely close down if the airport closed down - but that fact would not be captured in the airport sector's multipliers.
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    soniawatts
    Doug, Thank you for the further color on that. I suppose my best option is to define the study area as the metropolitan area it serves, and in my report provide explanations of what may be missing from the numbers?
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    jenny
    That is exactly how we would recommend handling it. If you did happen to get some information on say UPS' activity at the airport that would be lost, you could model that as a separate additional impact, though you would need to first break the links between UPS and air transportation so as to not double-count that part (since you've already modeled the air transportation part) - we can help you do that if need be.
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    soniawatts
    Thanks Jenny. I will try to come up with a list of missing forward linkages, as well as all the data I can get my hands on to help model them.

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