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Model

CESM 1.2 - CAM 5.3 (Atmosphere)

CESM 1.2 - CLM 4.5 (Land surface)

Horizontal resolution and grid1/2° lat-lon approx
Atmosphere vertical resolution46 levels in the vertical
Top of atmosphere0.2 hPa (60 km approx.)
Soil levels (layers)

15
(10 soil layers plus 5 bedrock layers)

Layer 1 (soil): 0.0000-0.0279m
Layer 2 (soil): 0.0279-0.0623m
Layer 3 (soil): 0.0623-0.1189m
Layer 4 (soil): 0.1189-0.2122m
Layer 5 (soil): 0.2122-0.3661m
Layer 6 (soil): 0.3661-0.6198m
Layer 7 (soil): 0.6198-1.0380m
Layer 8 (soil): 1.0380-1.7276m
Layer 9 (soil): 1.7276-2.8646m
Layer 10 (soil): 2.8646-4.7392m
Layer 11 (bedrock): 4.7392-7.8298m
Layer 12  (bedrock): 7.8298-12.9253m
Layer 13  (bedrock): 12.9253-21.3265m
Layer 14  (bedrock): 21.3265-35.1776m
Layer 15  (bedrock): 35.1776-50.0000m 

Time step

Main (Physics) Time-step: 30 minutes.

“Tracer” Advection Time step: 225 seconds
(1/8 of the Physics time step)

Fluid-Dynamics Time step: 56.25 seconds
(1/32 of the Physics time step).

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