How does switching land use affect the parameter values?

Within a simulation, it is possible to change the land use type of your scenario by selecting another land use on the Scenario tab.

When you do this, you have to keep in mind that the following parameter values will be reset to the corresponding land use defaults:

  • Scenario tab (parameters only visible in Tier 2):
    • time patterns on site (see Tables 35-43 in the FL/BRX and Tables 35-42 in the WAL version of the Technical Guidance Document (TGD))
    • soil & dust ingestion rates (see Tables 44-45 in the FL/BRX TGD and Tables 43-44 in the WAL TGD)
    • fraction of soil contributing to soil & dust ingestion (see Table 44 in the FL/BRX TGD and Table 43 in the WAL TGD)
    • fraction of groundwater used as drinking water (see Table 46 in the FL/BRX TGD and Table 45 in the WAL TGD)
  • Water tab:
    • enter / calculate groundwater concentration (gets reset to "Calculate groundwater concentration")
    • fraction of drinking water intake coming from site (only visible in Tier 2, see Table 46 in the FL/BRX TGD and Table 45 in the WAL TGD)
  • Outdoor air tab (parameters only visible in Tier 2):
    • terrain roughness length (see Table 47 in the FL/BRX TGD and Table 46 in the WAL TGD)
  • Indoor air tab:
    • building type (gets reset to "basement")
    • state of floor (gets reset to "gaps and holes")
    • basic air exchange rate for indoor space (only visible in Tier 2, see Table 15 in the FL/BRX and WAL TGD)
    • fraction of soil in indoor dust (only visible in Tier 2, see Table 47 in the FL/BRX TGD and Table 46 in the WAL TGD)
  • Exposure tab (parameters only visible in Tier 2):
    • food consumption rates for vegetables & animal products (see Tables 29-30 in the FL/BRX and WAL TGD)
    • fraction of local origin for vegetables & animal products (see Table 46 in the ​FL/BRX TGD and Table 45 in the WAL TGD)

last modified on 10/04/2017 - 12:19

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