Well, I need to emphasize that this is only visualization of a single NASA model run of year 2006. I don't know how this model's parameters were initialized, so I can't make any claims about how chemtrails attributed to the results. The only variables I've seen in this dataset are "tasmax" (max daily surface temperature), "tasmin" (min daily surface temp) and "precipitation". No discrete "chemtrail" data is logged.
What I will say is that if NASA is going to distribute their data to the general public, then it's also important for this data to be publicly interpreted. This is what I was hoping to address with my referral to the visualization software I mentioned in my previous post.
I think that a visualization tool was what the OP was asking for, and I know that VAPOR fits this use case; especially because it's free, cross-platform, and NetCDF compliant.