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Good Afternoon,</div>
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I am trying to use the GFS Ensemble to generate probabilities based on conditional thresholds and am running into some trouble.</div>
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Initially, I have tried to generate an ensemble mean of the probability of 0.01" of QPF in 3-hourly time increments.</div>
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See attached GrADS script (gefs_p01.gs) and the control file (gefs.ctl) that I am using.</div>
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I am receiving the following error messages:</div>
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<i>Operation error: Invalid dimension environment</i>
<div><i> Looping dimension does not vary</i></div>
<div><i>result is Operation error: Invalid dimension environment</i></div>
<i> Looping dimension does not vary</i><br>
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What am I doing wrong here?</div>
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Best,</div>
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<div style="font-size:13px; color:rgb(0,0,0); font-family:Tahoma"><font face="Calibri,Arial,Helvetica,sans-serif"><font face="Calibri,Arial,Helvetica,sans-serif" size="2" color="#006FC9" style=""><span style="font-size:11pt"><b><span style="font-size:14pt">Aaron
Perry</span></b></span></font></font></div>
<div style="color:rgb(0,0,0); font-family:Tahoma"><font face="Calibri,Arial,Helvetica,sans-serif" style=""><font face="Calibri,Arial,Helvetica,sans-serif" size="2" color="#006FC9" style="font-size:13px"><span style="font-size:11pt"><span style="font-size:14pt"></span></span></font><font face="Calibri,Arial,Helvetica,sans-serif" color="#006FC9" style=""><span style="font-size:12pt">Meteorologist<br>
</span><span style="font-size:12pt"></span></font><font face="Calibri,Arial,Helvetica,sans-serif" size="2" color="#006FC9" style="font-size:13px"><span style="font-size:12pt">Class of '16</span></font><font face="Calibri,Arial,Helvetica,sans-serif" size="2" color="#006FC9" style="font-size:13px"><span style="font-size:12pt"><br>
</span></font><font face="Calibri,Arial,Helvetica,sans-serif" size="2" color="#006FC9" style="font-size:13px"><span style="font-size:12pt">Northern Vermont University-Lyndon</span></font></font></div>
<div style="font-size:13px; color:rgb(0,0,0); font-family:Tahoma"><font face="Calibri,Arial,Helvetica,sans-serif"><font face="Calibri,Arial,Helvetica,sans-serif" size="2" color="#006FC9"><span style="font-size:12pt"><span style="font-size:10pt">(formerly </span><span style="font-size:10pt">Lyndon
State College)</span></span></font><font face="Calibri,Arial,Helvetica,sans-serif" size="2" color="#006FC9"><span style="font-size:12pt"><br>
<span style="font-size:12pt"></span><span style="font-size:12pt">Boston, Mass.</span></span></font></font></div>
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<div style="font-size:13px; color:rgb(0,0,0); font-family:Tahoma"><font face="Calibri,Arial,Helvetica,sans-serif"><font size="2" color="#006FC9"><span style="font-size:12pt"><span style="font-size:12pt">Twitter:
</span><a href="https://twitter.com/AaronPerryWx" class="OWAAutoLink"><span style="font-size:12pt">@AaronPerryWx</span></a></span></font><font size="2"><span style="font-size:11pt"><span style="font-size:12pt"><a href="https://twitter.com/arnpry" target="_blank" id="LPNoLP"></a><a href="https://twitter.com/AaronPerryWx" class="OWAAutoLink"></a></span></span></font></font></div>
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<div style="font-size:13px; color:rgb(0,0,0); font-family:Tahoma"><font face="Calibri,Arial,Helvetica,sans-serif"><font face="Calibri,Arial,Helvetica,sans-serif" size="2" color="#006FC9"><span style="font-size:12pt">Email: </span></font><a href="http://Aaron.Perry@lyndonstate.edu/" target="_blank" id="LPNoLP"><font face="Calibri,Arial,Helvetica,sans-serif" size="2"><span style="font-size:12pt">Aaron.Perry@lyndonstate.edu</span></font></a></font></div>
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