Page 1 of 1

Backwards Trajectory - Arctic Air

Posted: December 1st, 2016, 9:55 pm
by Cambium
Can someone guide me to a link or step by step info on how to retrieve these maps below? YouTube informational video?

There is currently a projection of Arctic air to drop down next week and I wanted to see a backwards trajectory of it.

This is from back in February but wanted to know how to create such a map for current projection for next week.

Image
Source for image above: https://twitter.com/TomNiziol/status/697255758757568512

I assume I need to start here? http://ready.arl.noaa.gov/hypub-bin/trajtype.pl
Do I choose "normal"?
I assume GFS on next page? Source location I assume in the Arctic Circle?
Then the Model Run Details and the Display options I'm not sure of.

Thank You.

Re: Backwards Trajectory - Arctic Air

Posted: December 14th, 2016, 12:35 pm
by ariel.stein
Just follow the web page prompts and use the default options. Just make sure you choose a trajectory duration of -72 hours so you generate a back-trajectory.