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Dynamic Layers

Dynamic layers are those for which the explicit data is not stored. Instead, data is calculated on the fly by interpolating between stored data for different deltaT increments (for further details please contact Fathom support).

The following elements can be combined to generate valid layer IDs for dynamic layers, subject to licence restrictions.

Global Flood Map 3

Dimension Value(s)
Model GLOBAL, FLOOD_MAP
Resolution 1ARCSEC
Offset NW_OFFSET
Version v3.0 (with GLOBAL...), v3.1 (with FLOOD_MAP...)

Flood Depths

Dimension Value(s)
Return Period 1in5 to 1in1000 inclusive
Type - Defenses PLUVIAL-DEFENDED,
FLUVIAL-UNDEFENDED, FLUVIAL-DEFENDED,
COASTAL-UNDEFENDED, COASTAL-DEFENDED
Metric DEPTH
Year 2011 to 2100 inclusive
deltaT 1.00 to 5.00 inclusive
Climate Scenario One of the following Shared Socioeconomic Pathways (SSP), Representative Concentration Pathways (RCP) or Network for Greening the Financial System (NGFS) scenarios:
  • SSP1_1.9, SSP1_2.6, SSP2_4.5, SSP3_7.0, SSP5_8.5
  • RCP2.6, RCP4.5, RCP6.0, RCP8.5
  • NGFS_DNZ (Divergent net zero), NGFS_NZ2050 (Net zero 2050), NGFS_DT (Delayed transition), NGFS_B2C (Below 2°), NGFS_NDC (Nationally determined contributions), NGFS_CP (Current policies)
Percentile PERCENTILE50

US Flood Map 3

Dimension Value(s)
Model FLOOD_MAP
Resolution 1_3ARCSEC
Offset NW_OFFSET
Version v3.1

Flood Depths

Dimension Value(s)
Return Period 1in5 to 1in1000 inclusive
Type - Defenses PLUVIAL-DEFENDED,
FLUVIAL-UNDEFENDED, FLUVIAL-DEFENDED, FLUVIAL-DEFENDED_KNOWN,
COASTAL-UNDEFENDED, COASTAL-DEFENDED, COASTAL-DEFENDED_KNOWN
Metric DEPTH
Year 2011 to 2100 inclusive
deltaT 1.00 to 5.00 inclusive
Climate Scenario One of the following Shared Socioeconomic Pathways (SSP), Representative Concentration Pathways (RCP) or Network for Greening the Financial System (NGFS) scenarios:
  • SSP1_1.9, SSP1_2.6, SSP2_4.5, SSP3_7.0, SSP5_8.5
  • RCP2.6, RCP4.5, RCP6.0, RCP8.5
  • NGFS_DNZ (Divergent net zero), NGFS_NZ2050 (Net zero 2050), NGFS_DT (Delayed transition), NGFS_B2C (Below 2°), NGFS_NDC (Nationally determined contributions), NGFS_CP (Current policies)
Percentile PERCENTILE50

Additional Restrictions

A climate option for a dynamic layer is defined as:

  • One Percentile and

  • For Inland (pluvial and fluvial) Flood:

  • One year 2011 to 2020 inclusive or…

  • One year 2021 to 2100 inclusive and one climate scenario or…
  • One deltaT

or

  • For Coastal Flood:
  • One year 2011 to 2020 inclusive or…
  • One year 2021 to 2100 inclusive and one climate scenario or…
  • One year 2021 to 2100 inclusive and one deltaT

For coastal flood, owing to the lagged response of sea-level rise to temperature, time is a required lookup key. If deltaT falls outside of the range of SSP scenario deltaTs for that year (as 4°C in 2030 would) we can provide the nearest covered deltaT in that year. The table below shows the minimum and maximum deltaT for a selection of years.

Year Minimum DeltaT (°C) Maximum DeltaT (°C)
2030 1.44 1.58
2040 1.55 1.93
2050 1.57 2.35
2060 1.54 2.80
2070 1.50 3.28
2080 1.46 3.78
2090 1.42 4.30
2100 1.38 4.78