[10186] | 1 | ====================== |
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| 2 | Explore the test cases |
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| 3 | ====================== |
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| 4 | |
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[10204] | 5 | The description below is a brief description of the test cases available in NEMO. |
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| 6 | For detailed description and notebook, the reader is directed on the `Github repository`_ |
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[10186] | 7 | |
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[10204] | 8 | .. _Github repository: https://github.com/sflavoni/NEMO-test-cases/ |
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[10186] | 9 | |
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[10204] | 10 | ICEDYN |
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| 11 | ====== |
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| 12 | |
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[10240] | 13 | This test case illustrates the advection of an ice patch across a East/West and North/South periodic channel. |
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[10204] | 14 | This configuration can be used to test the advection of the ice patch in an AGRIF zoom (1:3) |
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| 15 | and across the AGRIF boundary or to test the ice advection schemes (Prather and Ultimate-Macho). |
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| 16 | In the latest case user need to remove ``key_agrif`` out of the CPP keys list. |
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[10201] | 17 | |
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[10204] | 18 | .. image:: _static/ICEDYN_UDIAG_43days_UM5.gif |
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[10201] | 19 | |
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[10204] | 20 | VORTEX |
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| 21 | ====== |
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| 22 | |
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| 23 | This test case illustrates the propagation of an anticyclonic eddy over a Beta plan and a flat bottom. |
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| 24 | It is implemented here with an online refined subdomain (1:3) out of which the vortex propagates. |
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[10240] | 25 | It serves as a benchmark for quantitative estimates of nesting errors as in Debreu et al. (2012) :cite:`DEBREU2012`, |
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| 26 | Penven et al. (2006) :cite:`PENVEN2006` or Spall and Holland (1991) :cite:`SPALL1991`. |
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[10230] | 27 | |
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[10204] | 28 | The animation below (sea level anomaly in meters) illustrates with two 1:2 successively nested grids how |
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| 29 | the vortex smoothly propagates out of the refined grids. |
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| 30 | |
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| 31 | .. image:: _static/VORTEX_anim.gif |
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[10201] | 32 | |
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[10204] | 33 | ISOMIP |
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| 34 | ====== |
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[10201] | 35 | |
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[10230] | 36 | The purpose of this test case is to evaluate the impact of various schemes and new development with the iceshelf cavities circulation and melt. |
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[10240] | 37 | This configuration served as initial assesment of the ice shelf module in Losh et al. (2008) :cite:`LOSCH2008` and Mathiot et al. (2017) :cite:`MATHIOT2017`. |
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[10230] | 38 | The default setup is the one described `here <http://staff.acecrc.org.au/~bkgalton/ISOMIP/test_cavities.pdf>`_. |
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[10204] | 39 | |
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[10230] | 40 | The figure below (meridional overturning circulation) illustrates the circulation generated after 10000 days by the ice shelf melting (ice pump). |
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[10201] | 41 | |
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[10204] | 42 | .. image:: _static/ISOMIP_moc.png |
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| 43 | |
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| 44 | LOCK_EXCHANGE |
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| 45 | ============= |
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| 46 | |
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| 47 | The LOCK EXCHANGE experiment is a classical fluid dynamics experiment that has been adapted |
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[10240] | 48 | by Haidvogel and Beckmann (1999) :cite:`HAIDVOGEL1999` for testing advection schemes in ocean circulation models. |
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| 49 | It has been used by several authors including Burchard and Bolding (2002) :cite:`BURCHARD2002` and Ilicak et al. (2012) :cite:`ILICAK2012`. |
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| 50 | The LOCK EXCHANGE experiment can in particular illustrate the impact of different choices of numerical schemes |
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[10204] | 51 | and/or subgrid closures on spurious interior mixing. |
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| 52 | |
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[10240] | 53 | Below the animation of the LOCK_EXCHANGE test case using the advection scheme FCT4 (forth order) for tracer and ubs for dynamics. |
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| 54 | |
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[10219] | 55 | .. image:: _static/LOCK-FCT4_flux_ubs.gif |
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[10204] | 56 | |
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| 57 | OVERFLOW |
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| 58 | ======== |
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| 59 | |
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| 60 | The OVERFLOW experiment illustrates the impact of different choices of numerical schemes |
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| 61 | and/or subgrid closures on spurious interior mixing close to bottom topography. |
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| 62 | The OVERFLOW experiment is adapted from the non-rotating overflow configuration described |
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[10240] | 63 | in Haidvogel and Beckmann (1999) :cite:`HAIDVOGEL1999` and further used by Ilicak et al. (2012) :cite:`ILICAK2012`. |
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| 64 | Here we can assess the behaviour of the second-order tracer advection scheme FCT2 and fortht-order FCT4, z-coordinate and sigma coordinate (...). |
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[10204] | 65 | |
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[10240] | 66 | Below the animation of the OVERFLOW test case in sigma coordinate with the forth-order advection scheme FCT4. |
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| 67 | |
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[10219] | 68 | .. image:: _static/OVF-sco_FCT4_flux_cen-ahm1000.gif |
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[10204] | 69 | |
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| 70 | WAD |
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| 71 | === |
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| 72 | |
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| 73 | A set of simple closed basin geometries for testing the Wetting and drying capabilities. |
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| 74 | Examples range from a closed channel with EW linear bottom slope to a parabolic EW channel with a Gaussian ridge. |
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| 75 | |
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| 76 | Below the animation of the test case 7. This test case is a simple linear slope with a mid-depth shelf with an open boundary forced with a sinusoidally varying ssh. |
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| 77 | This test case has been introduced to emulate a typical coastal application with a tidally forced open boundary with an adverse SSH gradient that, when released, creates a surge up the slope. |
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| 78 | The parameters are chosen such that the surge rises above sea-level before falling back and oscillating towards an equilibrium position |
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| 79 | |
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| 80 | .. image:: _static/wad_testcase_7.gif |
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| 81 | |
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[10240] | 82 | CANAL |
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| 83 | ===== |
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| 84 | |
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| 85 | East-west periodic canal of variable size with several initial states and associated geostrophic currents (zonal jets or vortex). |
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| 86 | |
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| 87 | .. image::_static/CANAL_image.gif |
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| 88 | |
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| 89 | ================== |
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| 90 | Compile test cases |
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| 91 | ================== |
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| 92 | The compilation of the test cases is very similar to the manner the reference configurations are compiled. |
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| 93 | If you are not familiar on how to compile NEMO, it is first recomended to read the instruction |
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| 94 | `here <http://forge.ipsl.jussieu.fr/nemo/wiki/Users/ModelInstall>`_ |
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| 95 | |
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| 96 | | In the same manner as the ref. cfg are compiled with '-r' option, test cases can be compile by the use of makenemo with '-a' option. |
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| 97 | |
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| 98 | | Here an example to compile a copy named WAD2 of the wetting and drying test case (WAD) on the macport_osx architecture on 4 cores: |
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| 99 | |
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| 100 | .. code-block:: console |
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| 101 | |
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| 102 | $ ./makenemo -n WAD2 -a WAD -m macport_osx -j 4 |
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| 103 | |
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| 104 | ===================================== |
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| 105 | Run and analyse the test cases |
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| 106 | ===================================== |
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| 107 | There no requirement of specific input file for the test_cases presented here. The XIOS xml input files and namelist are already setup correctly. |
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| 108 | All the detailed on how to run a specific test cases and Jupyter notebook are available on github `here <https://github.com/sflavoni/NEMO-test-cases>`_. |
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| 109 | |
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[10204] | 110 | ========== |
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[10201] | 111 | References |
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| 112 | ========== |
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[10240] | 113 | |
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| 114 | .. bibliography:: test_cases.bib |
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| 115 | :all: |
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| 116 | :style: unsrt |
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