Storm chaser, Aurora hunter, Photographer. Severe storm researcher and M.S. student at UND. SounderPy developer.
Jun 2, 2023 • 4 tweets • 2 min read
I have had some requests for these graphs for different states, does anyone have a request for a different state while I have the code open?
May 15, 2023 • 9 tweets • 3 min read
I want to expand on my thread yesterday about understanding the caveats of Storm Relative Helicity.
Here is an idealized example of two hodographs that theoretically have equal SRH but very different shape. This goes back to the calculation of SRH that uses SRW and SWV (1/9)...
First, let's look at Storm Relative WInd (SRW). This is the 'wind' 'created' by the storm's forward motion. This motion is what you know as the 'RM' (Bunkers Right Mover) point on a hodograph. This flow of wind also acts as inflow, feeding air into a storm's updraft. (2/9)
May 14, 2023 • 7 tweets • 2 min read
This streamwiseness project is already proving useful:
This map of 0-3km vorticity that is streamwise (SWV), SRH, and SRW shows the important relationship between SRW & SWV with SRH. Forecasters should carefully consider what background kinematic property dominates SRH...(1/5)
(2/5)...Its important to note that the calculation of SRH is a function of both SRW (Vsr) and SWV (ζs) and can be simply approximated as the integral over some depth of SRW * SWV.
Thus, SRH may be high due to high SRW and low SWV, or high SWV and low SRW, or some combination..