<div dir="ltr">If I understand your question correctly, I believe <a href="http://www.ncl.ucar.edu/Document/Functions/Contributed/month_to_season.shtml">month_to_season</a> will do what you're looking for, provided that you have monthly data.<div><br></div><div>If you're data is daily, you could use one of my functions, like <a href="https://k3.cicsnc.org/carl/carl-ncl-library/blob/master/lib.months.ncl">month_ind</a>, that extracts the indices for any specified groupings of months.</div><div><br></div><div> Carl</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jun 16, 2015 at 12:56 PM, Lesley Smith - NOAA Affiliate <span dir="ltr"><<a href="mailto:lesley.l.smith@noaa.gov" target="_blank">lesley.l.smith@noaa.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Greetings, NCLers,<div>Are there any NCL functions which include Dec data in a DJF seasonal mean? </div><div>Thanks for any tips,</div><div>-Lesley</div><div><br></div><div>----------------------------------------------------------------</div><div><p style="margin:0px;font-size:11px;font-family:Menlo">Lesley L. Smith, Ph.D.</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">Attribution and Predictability Assessments Team<br></p>
<p style="margin:0px;font-size:11px;font-family:Menlo">NOAA/ESRL Physical Sciences Division</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">R/PSD1 325 Broadway</p>
<p style="margin:0px;font-size:11px;font-family:Menlo">Boulder, CO 80305</p><p style="margin:0px;font-size:11px;font-family:Menlo">--------------------------------</p></div></div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><br><table border="0" cellpadding="2" cellspacing="2" style="max-width:100%;border-collapse:collapse;border-spacing:0px;color:rgb(51,51,51);font-size:14px;border:3px solid rgb(170,170,170);font-family:Times;line-height:12px;background-color:transparent"><tbody><tr><td align="center" height="71" width="71"><span style="font-size:11px"><span style="font-family:arial,helvetica,sans-serif"><a href="http://www.cicsnc.org/" style="color:rgb(38,58,143);text-decoration:none;font-weight:bold" target="_blank"><img src="http://www.cicsnc.org/assets/images/cicsnc-logo.png" width="96" height="93"></a> <a href="http://www.researcherid.com/rid/B-8711-2011" target="_blank"><br></a></span></span><br><font size="4"><b style="text-align:start;color:rgb(38,58,143);font-family:arial,helvetica,sans-serif"> <a href="http://www.cyclonecenter.org/" style="color:rgb(38,58,143);text-decoration:none" target="_blank">Cyclone</a></b><a href="http://www.cyclonecenter.org/" style="text-align:start;color:rgb(38,58,143);font-family:arial,helvetica,sans-serif;text-decoration:none" target="_blank">Center.org</a> </font></td><td valign="top"><span style="font-size:11px"><span style="font-family:arial,helvetica,sans-serif"><b>Carl J. Schreck III, PhD</b><br><b>Research Associate</b><br></span></span><a href="http://www.cicsnc.org/" style="font-family:arial,helvetica,sans-serif;font-size:11px;color:rgb(38,58,143);text-decoration:none;font-weight:bold" target="_blank">Cooperative Institute for Climate and Satellites NC (CICS-NC)</a> /<br><span style="font-size:11px"><span style="font-family:arial,helvetica,sans-serif"><a href="http://www.cicsnc.org/" style="color:rgb(38,58,143);text-decoration:none;font-weight:bold" target="_blank">North Carolina Institute for Climate Studies (NCICS)</a> <br><a href="http://ncsu.edu/" style="color:rgb(38,58,143);text-decoration:none;font-weight:bold" target="_blank">North Carolina State University</a><br><a href="http://ncei.noaa.gov/" style="color:rgb(38,58,143);text-decoration:none;font-weight:bold" target="_blank">NOAA National Centers for Environmental Information (NCEI)</a><br>151 Patton Ave, Asheville, NC 28801<br>e: </span></span><a href="mailto:cjschrec@ncsu.edu" style="color:rgb(38,58,143);font-family:arial,helvetica,sans-serif;font-size:11px;text-decoration:none;font-weight:bold" target="_blank">cjschrec@ncsu.edu</a><br style="font-family:arial,helvetica,sans-serif;font-size:11px"><span style="font-size:11px"><span style="font-family:arial,helvetica,sans-serif">o: +1 828 257 3140<br></span></span><a href="http://scholar.google.com/citations?hl=en&user=th8ONEcAAAAJ&view_op=list_works&sortby=pubdate" style="color:rgb(38,58,143);font-family:arial,helvetica,sans-serif;font-size:11px;text-decoration:none;font-weight:bold" target="_blank">Publications</a><br><a href="http://monitor.cicsnc.org/mjo/" style="color:rgb(38,58,143);font-family:arial,helvetica,sans-serif;font-size:11px;text-decoration:none;font-weight:bold" target="_blank">monitor.cicsnc.org/mjo</a><br style="font-family:arial,helvetica,sans-serif;font-size:11px"></td></tr></tbody></table></div></div></div></div></div></div></div></div></div></div>
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