AOD output from WRF

Dear NCL Users,   I need to plot a parameter from WRF output, and I think my script is true but its image output is incorrect. I have put my script and image result in attach, please see them and tell me where is my mistake???   thanks in advance Marzie

_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk