This page should describe Validation Tests performed for this stand alone feature and should provide links to all the result pages.
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Summary
We run a 1 degree FC compset, FC5AV1C-L, simulation for 6 years and create 5-year (year 2 to 6) climatologies from it. We plot climatologies vs observations and vs default configuration. The default configuration consists of default hydrostatic dycore with default settings. Preliminary runs are described in /wiki/spaces/COM/pages/780664997 (with preqx dycore) and in /wiki/spaces/COM/pages/941096965 (with theta dycore), each relevant run also has entry for its climatologies.
SL transport was first evaluated in the preqx dycore using the E3SM v1 atmosphere at 1 degree. Results and some technical details are presented in /wiki/spaces/COM/pages/916324466 . The SL transport was shown to be 6x faster than Eulerian transport.
With theta dycore, we only explore the hydrostatic option for now. The preliminary configuration for theta-l dycore and SL transport is Run6 in /wiki/spaces/COM/pages/997752860 and is summarized below. We assess the climatology differences to be small overall, but below we note below specific differences that an expert should evaluate. In this validation test, the transport speedup is over 6x and the overall dycore speedup is approximately 3.7x for an FC compset.
Validation Test 1
Validation Test 1: preqx dycore and SL transport for 1 degree
Date last modified: Sept. 2018
Contributors:
Provenance: commit 099c4dd, A. Bradley's fork of E3SM
Results: /wiki/spaces/COM/pages/780664997 , Run 19.
We ran FC5AV1C-L for 6 years with preqx dycore and SL transport and made 5-year climatologies. With diagnostics package, we compared climatologies of the new run to the default (preqx dycore, Eulerian transport, default E3SM settings) run from the same compset. Results are in https://portal.nersc.gov/project/acme/onguba/sl/sl-fastest.2369911-latlon-vs-f2/viewer/latitude-longitude/index.html for latlon plots and in https://portal.nersc.gov/project/acme/onguba/sl/sl-fastest.2369911-zonal-vs-f2/viewer/pressure-latitude/index.html for zonal plots. Our understanding from communicating with C. Golaz is that differences are relatively minor and are expected.
This task required new coupling mechanisms between homme and physics (ftypes). Tests for all coupling schemes are now in nightlies with baselines.
Validation Test 2
Validation Test 2: theta-l dycore and SL transport for 1 degree
Date last modified: June 2019
Contributors:
Provenance: commit a0ff14648bf1f, A. Bradley's fork (PR #3017, now in master)
Results: /wiki/spaces/COM/pages/997752860 , Run6 only
We ran FC5AV1C-L for 6 years with theta-l hydrostatic dycore and SL transport and made 5-year climatologies. With diagnostics package, we compared climatologies of the new run to the default (preqx dycore, Eulerian transport, default E3SM settings) run from the same compset. Results are available here:
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There are some differences, in particular, for seasonal jets ("U global" pressure-latitude images) and for tropopause T200mb ("is a somewhat large positive temperature bias at approximately 300 to 200 mb near the poles, visible in the "T global" pressure-latitude images and "T-200mb global" latitude-longitude images). An expert should evaluate these. The T200mb difference is a positive temperature bias at approximately 300 to 200 mb near the poles. There is a corresponding negative bias in relative humidity in these same regionsthis difference.
Test for theta-l dycore and SL transport was added to nightlies with baselines.
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