This page should describe Verification and Unit Tests performed for this stand-alone feature and should provide links to all the result pages.
Table of Contents
Summary
The new feature is tested with fully coupled E3SM simulation for both PI-control and historical layout.
Verification Test 1
Verification Test 1:
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Intercomparison of two-stream shortwave radiative transfer models in MPAS-seaice and ELM
Date last modified: Jun 17, 2019
Contributors: Cheng Dang (Unlicensed)
Provenance: (Run provenance Link, Code Tag, etc.)
Results:
MPAS-analysis:
E3SM diagnostic:
https://portal.nersc.gov/project/m2833/cdang/30yr.e3sm_diags.m2m.SNICAR_AD_landseaice.SNICAR_AD_seaice.ne30_oEC.edison/viewer/The shortwave radiative transfer algorithm dEdd-AD implemented in MPAS-seaice produces more accurate snow radiative properties, especially under a cloudy sky.
Reference: Dang, C., Zender, C. S., and Flanner, M. G.: Inter-comparison and improvement of 2-stream shortwave radiative transfer models for unified treatment of cryospheric surfaces in ESMs, The Cryosphere Discuss., https://doi.org/10.5194/tc-2019-22, in review, 2019.
Figure 6, The error in diffuse snow albedo computed using two-stream models, for various snow depths and snow grain radii, with solar zenith angle of 60° at the top of the atmosphere.
Verification Test 2
Verification Test 2: Correction for direct albedo for large solar zenith angles
Date last modified: Jun 17, 2019
Contributors: Cheng Dang (Unlicensed)
Provenance: (Run provenance Link, Code Tag, etc.)
Results:
Reference: Dang, C., Zender, C. S., and Flanner, M. G.: Inter-comparison and improvement of 2-stream shortwave radiative transfer models for unified treatment of cryospheric surfaces in ESMs, The Cryosphere Discuss., https://doi.org/10.5194/tc-2019-22, in review, 2019.
Figure 12. Error in semi-infinite snow albedo computed using dEdd-AD before (top row) and after (bottom row) incorporating corrections for near-IR albedo, for different solar zenith angles and snow grain radii.
