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COMBLE Model-Observation Intercomparison Project Cookbook
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<li class="toctree-l1"><a class="reference internal" href="notebooks/conversion/convert_comble_dephy_forcing_to_DHARMA_LES_and_ModelE3_SCM_forcing.html">Example: convert DEPHY forcing to DHARMA LES and ModelE3 SCM formats</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/conversion/convert_comble_dephy_forcing_to_UCLALES-SALSA_forcing.html">Convert DEPHY forcing to UCLALES-SALSA forcing</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/conversion/convert_comble_dephy_forcing_to_WRF_LES_forcing.html">Example: convert DEPHY forcing to WRF-LES forcing</a></li>
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<li class="toctree-l1"><a class="reference internal" href="notebooks/conversion_output/convert_AOSCM_output_to_dephy_format.html">Example: convert AOSCM output to DEPHY format</a></li>
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<li class="toctree-l1"><a class="reference internal" href="notebooks/conversion_output/convert_DHARMA_LES_output_to_dephy_format_2D.html">Example: convert DHARMA LES 2D output to DEPHY format</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/conversion_output/convert_DHARMA_LES_output_to_dephy_format_3D.html">Example: convert DHARMA LES 3D output to DEPHY format</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/conversion_output/convert_E3SMv2_SCM_output_to_dephy_format.html">Example: convert E3SMv2 SCM output to DEPHY format</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/conversion_output/convert_E3SMv3_SCM_output_to_dephy_format.html">Example: convert E3SMv3 SCM output to DEPHY format</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/conversion_output/convert_ICON_SCM_output_to_dephy_format.html">convert ICON SCM output to DEPHY format</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/conversion_output/convert_ModelE3_SCM_output_to_dephy_format.html">Example: convert ModelE3 SCM output to DEPHY format</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/conversion_output/convert_UCLALES-SALSA_output_to_dephy_format.html">Convert UCLALES-SALSA output to DEPHY format</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/conversion_output/convert_WRF_LES_output_to_dephy_format.html">Example: convert WRF-LES output to DEPHY format</a></li>
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<p aria-level="2" class="caption" role="heading"><span class="caption-text">Plotting and Analysis</span></p>
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<li class="toctree-l1 has-children"><a class="reference internal" href="les_plotting_index.html">LES</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
<li class="toctree-l2"><a class="reference internal" href="notebooks/plotting/plot_les_FixN_noice.html">Compare FixN_noice LES Sims</a></li>
<li class="toctree-l2"><a class="reference internal" href="notebooks/plotting/plot_les_FixN.html">Compare FixN LES Sims</a></li>
<li class="toctree-l2"><a class="reference internal" href="notebooks/plotting/plot_les_FixN_def_z0.html">Compare FixN_def_z0 LES Sims</a></li>
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<li class="toctree-l2"><a class="reference internal" href="notebooks/plotting/check_les_2D.html">Check my LES run - 2D output</a></li>
<li class="toctree-l2"><a class="reference internal" href="notebooks/plotting/check_les_3D.html">Check my LES run - 3D output</a></li>
<li class="toctree-l2"><a class="reference internal" href="notebooks/plotting/example_plotting_2D_cluster.html">2D plotting of LES output vs. satellite imagery (work in progress)</a></li>
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<li class="toctree-l2"><a class="reference internal" href="notebooks/plotting/check_scm.html">Check my SCM run</a></li>
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<li class="toctree-l2"><a class="reference internal" href="notebooks/plotting/plot_FixN.html">Check ModelE output against LES for the “FixN” configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="notebooks/plotting/plot_FixN-allSCM.html">Check all SCMs against LES for the “FixN” configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="notebooks/plotting/plot_FixN_noice.html">Check ModelE against LES for the “FixN_noice” configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="notebooks/plotting/plot_FixN_noice-allSCM.html">Check all SCMs against LES for the “FixN_noice” configuration</a></li>
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<li class="toctree-l1"><a class="reference internal" href="emc2.html">The Earth Model Column Collaboratory (EMC<sup>2</sup>)</a></li>
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<li class="toctree-l1"><a class="reference internal" href="notebooks/forcing/create_comble_forcing_v2.4.html">DEPHY Forcing Derivation</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/plotting/example_plotting_specification_tests.html">Sensitivity to solar radiation, subsidence and treatment of ice surface</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/plotting/example_plotting_z0_tests.html">Sensitivity to roughness lengths</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/setup/aerosol-specification.html">Aerosol specification</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/setup/aerosol-inp-closure.html">Aerosol-Ice Nucleating Particle Closure</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/setup/aerosol-surface.html">Specifying Surface Aerosol Emissions for Simulations with Multi-Modal Aerosol</a></li>
<li class="toctree-l1"><a class="reference internal" href="notebooks/setup/where-are-the-rolls.html">Where are the rolls?</a></li>
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<h1>COMBLE Model-Observation Intercomparison Project Cookbook</h1>
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<h2> Contents </h2>
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<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#background-motivation">Background & Motivation</a></li>
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#model-inputs">Model Inputs</a></li>
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<li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#input-conversion-examples">Input Conversion Examples</a></li>
<li class="toc-h3 nav-item toc-entry"><a class="reference internal nav-link" href="#output-conversion-examples">Output Conversion Examples</a></li>
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<section class="tex2jax_ignore mathjax_ignore" id="comble-model-observation-intercomparison-project-cookbook">
<h1>COMBLE Model-Observation Intercomparison Project Cookbook<a class="headerlink" href="#comble-model-observation-intercomparison-project-cookbook" title="Link to this heading">#</a></h1>
<p><a class="reference external" href="https://jupyterhub.arm.gov/hub/user-redirect/git-pull?repo=https%3A//github.com/ARM-Development/comble-mip&amp;urlpath=lab/tree/comble-mip/../user-data-home/comble-mip/notebooks&amp;branch=main"><img alt="badge" src="https://img.shields.io/static/v1.svg?logo=Jupyter&label=ARM+JupyterHub&message=ACE+Environment&color=blue" /></a></p>
<figure class="align-default" id="id1">
<img alt="_images/13march_case_overview.png" src="_images/13march_case_overview.png" />
<figcaption>
<p><span class="caption-number">Fig. 1 </span><span class="caption-text">(Left) MODIS visible satellite image over the Norwegian Sea region on 13 March 2020. Colored lines show backward trajectories from 18 UTC at Andenes, Norway (denoted by the blue star) at altitudes of 500, 1000, and 2000 m ASL in cyan, yellow, and blue, respectively. (Right) Vertically pointing radar, lidar, microwave radiometer, and meteorological measurements at Andenes highlight the convective nature of cellular clouds, characterized by high reflectivity, strong vertical motions, liquid water pockets, and intense turbulence structures.</span><a class="headerlink" href="#id1" title="Link to this image">#</a></p>
</figcaption>
</figure>
<section id="background-motivation">
<h2>Background & Motivation<a class="headerlink" href="#background-motivation" title="Link to this heading">#</a></h2>
<p>This website hosts information about the Cold-Air Outbreaks in the Marine Boundary Layer Experiment (COMBLE) Model-Observation Intercomparison Project (MIP) for large-eddy simulation (LES) and single-column models (SCMs). The intercomparison, which was initiated in late 2021, focuses on a cold-air outbreak event observed over the Norwegian Sea on 13 March 2020 (Fig. 1) during the US Department of Energy’s COMBLE field campaign <a class="reference external" href="https://journals.ametsoc.org/view/journals/bams/103/5/BAMS-D-21-0044.1.xml">(Geerts et al., 2023)</a>. Despite the frequent occurrence of Arctic CAOs, numerical weather prediction models often have difficulty representing the convective boundary layer structure and turbulence, as well as mixed-phase cloud properties. Moreover, earth system models face similar challenges with respect to predicting mixed-phase cloud feedbacks and equilibrium climate sensitivity.</p>
<p>In mid-2022, a <a class="reference external" href="https://www.gewexevents.org/wp-content/uploads/COMBLE_white_paper.pdf">COMBLE MIP white paper</a> was accepted by the GEWEX Atmospheric System Study (GASS) panel, describing a two-part project for LES and SCM models. In part one, droplet and ice concentrations are specified. In part two, the specification adds an observation-informed initial aerosol size distribution profile with modally specified composition and hygroscopicity, adequate for prognosing droplet activation and heterogeneous ice formation. The COMBLE MIP effort has been an early adopter of the <a class="reference external" href="https://armcrf.servicenowservices.com/kb?id=kb_search&amp;kb_knowledge_base=d932abb71ba9d590094aebdbac4bcb8b">DOE ARM Data Workbench</a> to support each stage of participation, in addition to providing access to the <a class="reference external" href="https://www.arm.gov/capabilities/computing-resources">DOE Cumulus HPC</a> for computationally intensive forward-simulation for model evaluation against ground-based lidar and radar measurements at Andenes.</p>
<p>We welcome you to explore the website to learn more about the COMBLE-MIP project, including goals & hypotheses, modeling framework, and workflows.</p>
</section>
<section id="model-inputs">
<h2>Model Inputs<a class="headerlink" href="#model-inputs" title="Link to this heading">#</a></h2>
<p>A <a class="reference external" href="https://github.com/ARM-Development/comble-mip/blob/main/notebooks/forcing/COMBLE_INTERCOMPARISON_FORCING_V2.4.nc">file</a> containing model intialization and forcing information is provided in the <a class="reference external" href="https://github.com/GdR-DEPHY/DEPHY-SCM">DEPHY-SCM standard format</a>, suitable for application to both LES and SCM setups. The most recent version of the DEPHY standards may be found <a class="reference external" href="https://docs.google.com/document/d/1eAWY-ELL5Ua6a9WIsv4ODHmLXvfgla5TNQAuAwNASo0">here</a>.</p>
<p>Detailed information about our requested model configuration may be found <a class="reference external" href="https://arm-development.github.io/comble-mip/main_configuration.html">here</a>.</p>
</section>
<section id="python-notebooks">
<h2>Python Notebooks<a class="headerlink" href="#python-notebooks" title="Link to this heading">#</a></h2>
<p>We’ve developed several Jupyter Notebooks to reduce the burden on COMBLE MIP participants:</p>
<section id="input-conversion-examples">
<h3>Input Conversion Examples<a class="headerlink" href="#input-conversion-examples" title="Link to this heading">#</a></h3>
<p>Example scripts to convert the DEPHY standard format to ASCII or other netCDF formats needed to drive specific models.</p>
<ul class="simple">
<li><p><a class="reference external" href="https://arm-development.github.io/comble-mip/notebooks/conversion/convert_comble_dephy_forcing_to_DHARMA_LES_and_ModelE3_SCM_forcing.html">DEPHY forcing → DHARMA LES and ModelE3 SCM</a></p></li>
<li><p><a class="reference external" href="https://arm-development.github.io/comble-mip/notebooks/conversion/convert_comble_dephy_forcing_to_WRF_LES_forcing.html">DEPHY forcing → WRF-LES</a></p></li>
</ul>
</section>
<section id="output-conversion-examples">
<h3>Output Conversion Examples<a class="headerlink" href="#output-conversion-examples" title="Link to this heading">#</a></h3>
<p>Example scripts to convert specific model results back to the DEPHY standard format prior to submission.</p>
<ul class="simple">
<li><p><a class="reference external" href="https://arm-development.github.io/comble-mip/notebooks/conversion_output/convert_DHARMA_LES_output_to_dephy_format.html">DHARMA LES output → DEPHY</a></p></li>
<li><p><a class="reference external" href="https://arm-development.github.io/comble-mip/notebooks/conversion_output/convert_ModelE3_SCM_output_to_dephy_format.html">ModelE3 SCM output → DEPHY</a></p></li>
<li><p><a class="reference external" href="https://arm-development.github.io/comble-mip/notebooks/conversion_output/convert_WRF_LES_output_to_dephy_format.html">WRF-LES output → DEPHY</a></p></li>
</ul>
</section>
<section id="visualization-tools">
<h3>Visualization Tools<a class="headerlink" href="#visualization-tools" title="Link to this heading">#</a></h3>
<p>Example scripts to compare your results with those submitted from other models as well as with observations.</p>
<ul class="simple">
<li><p><a class="reference external" href="https://arm-development.github.io/comble-mip/notebooks/plotting/check_les.html">Check your LES results</a></p></li>
<li><p><a class="reference external" href="https://arm-development.github.io/comble-mip/notebooks/plotting/check_scm.html">Check your SCM results</a></p></li>
<li><p><a class="reference external" href="https://arm-development.github.io/comble-mip/notebooks/plotting/example_plotting.html">Compare with observations</a></p></li>
</ul>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>If you would like to contribute to the COMBLE MIP website by adding example scripts to convert to/from your host model and/or enhancing our plotting scripts, then please see the <a class="reference external" href="https://arm-development.github.io/comble-mip/CONTRIBUTING.html">Contributors Guide</a>.</p>
</div>
</section>
</section>
<section id="authors">
<h2>Authors<a class="headerlink" href="#authors" title="Link to this heading">#</a></h2>
<p>Tim Juliano, Florian Tornow, Ann Fridlind - Intercomparison development</p>
<p>Abigail Williams, Lynn Russell, Yijia Sun, Daniel Knopf - Aerosol analysis</p>
<p>Max Grover, Scott Collis, Kyle Dumas, Monica Ihli - Infrastructure development</p>
<p>Please contact Tim Juliano (tjuliano@ucar.edu) and Florian Tornow (ft2544@columbia.edu) for comments or questions about the model intercomparison project.</p>
<div class="admonition attention">
<p class="admonition-title">Attention</p>
<p>If you are interested in participating in the LES/SCM COMBLE intercomparison, then please <a class="reference external" href="https://docs.google.com/spreadsheets/d/1h0BDDCCJTfIsdvHHNFyA17bpsNAL7405GG69IkC8qJs/edit?usp=sharing">sign up here</a>.</p>
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