<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>Dear GrADS users,</DIV>
<DIV>Last summer I received a host of helpful responses to a question concerning how to create a climatology to be visualized through a Hovmuller plot. I recently used that same information and applied the climatology to be visualized through a line plot time series for a different project concerning OLR. Unfortunately, the climatology that was used for the OLR line plot time series was not accurate. </DIV>
<DIV> </DIV>
<DIV>I confirmed that it was not accurate by simply displaying all OLR years on the same plot and it varied greatly from what the climatology produced.</DIV>
<DIV> </DIV>
<DIV>Below is my script that attempts to create a line plot daily climatology time series of OLR from 1979-2007 at a specific location (the gridbox containing 18.75N,78W).</DIV>
<DIV> </DIV><SPAN lang=EN>
<DIV>'sdfopen c:\testdata\netcdf\olr.day.mean.nc'</DIV>
<DIV>'set grid off'</DIV>
<DIV>'set grads off'</DIV>
<DIV>'set lat 18.75'</DIV>
<DIV>'set lon 282'</DIV>
<DIV>'set line 8 1 6'</DIV>
<DIV>'set cmark 0'</DIV>
<DIV>'set tlsupp year'</DIV>
<DIV>'set vrange 180 290'</DIV>
<DIV>**************************</DIV>
<DIV>* t=1 is Apr1 1979 * </DIV>
<DIV>* t=10413 is Sept30 2007 *</DIV>
<DIV>**************************</DIV>
<DIV>'set t 1 182'</DIV>
<DIV>'define olrclim = ave(olr,t+0,t=10413,365)'</DIV>
<DIV>*this is for clim from Apr1-Sept30 1979-2007</DIV>
<DIV>*the dataset at t=1 begins on APR 1 1979</DIV>
<DIV>'d olrclim'</DIV>
<DIV>'draw title OLR climatology 1979-2007'</DIV>
<DIV> </DIV>
<DIV>I was assuming that the below lines: </DIV>
<DIV>'set t 1 182'</DIV>
<DIV>'define olrclim = ave(olr,t+0,t=10413,365)'</DIV>
<DIV>simply say to create 182 daily time steps, basically from Apr 1 to Sept30, and to calculate an average for every day from Apr - Sept. 30 within the entire 1979-2007 dataset.</DIV>
<DIV> </DIV>
<DIV>Can anybody comment on the construction of the time series?</DIV>
<DIV>Thank you very much.</DIV>
<DIV>Sincerely,</DIV>
<DIV>Teddy Allen</DIV>
<DIV></SPAN> </DIV>
<DIV>
<DIV><STRONG>web: <A href="http://personal.ecu.edu/tla0923/HOME.html" target=_blank rel=nofollow>http://personal.ecu.edu/tla0923/HOME.html</A></STRONG></DIV>
<DIV><STRONG>"To move quickly, go alone. To move far, go</STRONG> <STRONG><EM><FONT color=#ff0000>together</FONT></EM>."</STRONG></DIV>
<DIV><STRONG>African Proverb </STRONG><STRONG> *</STRONG></DIV></DIV>
<DIV><STRONG></STRONG> </DIV></td></tr></table><br>