lass="pre">numpy</span></code> (for mathematical calculations)</li>
<li><code class="docutils literal notranslate"><span class="pre">climlab</span></code> (to import distributions of solar radiation)</li>
<li><code class="docutils literal notranslate"><span class="pre">xarray</span></code> (required by climlab)</li>
<li><code class="docutils literal notranslate"><span class="pre">attrdict</span></code> (required by climlab)</li>
<li><code class="docutils literal notranslate"><span class="pre">matplotlib</sp