Page Comparison

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These mapping files are mostly used to generate initial conditions. Remapping the cam.i file from a spunup NE30 simulation will generate a reasonably well spunup initial condition file for higher resolutions.

• TR “mono” (with code fixes from 15 Jan 2020 )

  • ne30np4 → ne256np4

    • Tempest fixes from 15 Jan 2020 : weights are good. row sum error 1.3e-15, conservation error: 5e-14.

    • Status: GOOD

  • ne30np4->ne512np4

    • Status: GOOD

• MBTR “mono”

  • ne30np4->ne256np4

  • --monotonic 1: mapping weights have NaNs

  • --monotonic 3 --noconserve (“intbilin” option) weights are bad, max = 2.5

  • Status: NOT USABLE

• ESMF “bilin”

  • ne30np4->ne256np4

    • weights between [0,1]. row sum error 2.2e-16. conservation error: 3.4e-1 (bilin is not conservative)

    • mapping file frac_a=0 (BUG?), but frac_b=1

    • Status: GOOD

  • ne120np4->ne512np4

    • Status: GOOD

  • ne120np4->ne1024np4

    • 10M out of 120M weights are bad, >> 1.0. max row sum = 5.0

    • Status: NOT USABLE

• ESMF “aave”

  1. We dont consider these maps. We are trying to move away from these maps since they require the “dual grid”, which is difficult to produce and unnatural for GLL grids.

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