BaseParticleProperty</a></li>
</ul>
</div>
<dl class="simple">
<dt><strong>Role:</strong> Particle properties hold data at current time step for each particle, accessed using their <code class="docutils literal notranslate"><span class="pre">&quot;name&quot;</span></code> parameter. Particle properties  many be</dt><dd><ul class="simple">
<li><p>core properties set internally (eg particle location x )</p></li>
<li><p>derive from hindcast fields,</p></li>
<li><p>be calculated from other particle properties b