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&lt;title>WARNING_longitude_convention&lt;/title>
&lt;/head>
&lt;body style="margin:10;padding:10">&lt;h1 id='warning'>WARNING!&lt;/h1>
&lt;h2 id='longitudetimezone-convention'>Longitude/Timezone convention&lt;/h2>
&lt;p>INSEL 8.3 uses a different longitude/timezone convention than INSEL 8.2.&lt;/p>
&lt;p>Longitude is now east-positive, and timezone is UTC.&lt;/p>
&lt;p>As an example, Stuttgart (48.77°N, 9.18°E, UTC+1) was described in INSEL 8.2 as:&lt;/p>
&lt;ul>
&lt;li>Latitude : 48.77&lt;/li>
&lt;li>Longitude : -9.18&lt;/li>
&lt;li>Timezone : 23&lt;/li>

&lt;/ul>
&lt;p>In INSEL 8.3, it is described as:&lt;/p>
&lt;ul>
&lt;li>Latitude : 48.77&lt;/li>
&lt;li>&lt;strong>Longitude : 9.18&lt;/strong>&lt;/li>
&lt;li>&lt;strong>Timezone : 1&lt;/strong>&lt;/li>

&lt;/ul>
&lt;p>Which is the convention used by many other pieces of software.&lt;/p>
&lt;h2 id='new-blocks'>New blocks&lt;/h2>
&lt;ul>
&lt;li>A new block has been defined for each block which expects coordinates (e.g. &lt;em>MTMLALO&lt;/em> -&amp;gt; &lt;em>MTMLALO2&lt;/em>, &lt;em>GENGT&lt;/em> -&amp;gt; &lt;em>GENGT2&lt;/em>, &lt;em>GH2GT&lt;/em> -&amp;gt; &lt;em>GH2GT2&lt;/em>, ...). &lt;/li>

&lt;/ul>
&lt;ul>
&lt;li>In INSEL GUI, only the new blocks will be available, and old blocks will be automatically converted.&lt;/li>
&lt;li>The old blocks will still be available to INSEL core, e.g. for simulation and templates.&lt;/li>

&lt;/ul>
&lt;h2 id='what-to-do'>What to do?&lt;/h2>
&lt;ul>
&lt;li>Please backup old 8.2 models.&lt;/li>
&lt;li>Open them : they should be automatically converted (e.g. &lt;em>MTMLALO&lt;/em> -&amp;gt; &lt;em>MTMLALO2&lt;/em>, -9.18 -&amp;gt; 9.18).&lt;/li>
&lt;li>Manually redefine longitude if it was defined as a constant. &lt;/li>
&lt;li>Check that the convention is now &lt;em>east-positive&lt;/em> and UTC.&lt;/li>
&lt;li>Check if there&amp;#39;s any warning during the simulation.&lt;/li>
&lt;li>Check if the results are plausible.&lt;/li>
&lt;li>Delete this Warning message from the Palette.&lt;/li>
&lt;li>Forget INSEL 8.2 ever used another convention.&lt;/li>

&lt;/ul>
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