MASTERING PARAGLIDING: ROUGH GUIDE TO SKEW T PT1

[@MasteringParagliding]

The whole series has now been moved to our Patreon channel, link is here. www.patreon.com/collection/490995 Many thanks for the support, you'll be given access to bonus footage, longer format videos, deeper dives into topics and much more.

[@tommymoore7391]

Keep em coming. A series of short (5-10 min) videos breaks the topics up nicely compared with a long lecture. :)

[@PetrPolach]

The saturated specific humidity ratio (SSH) is usefull to predict the condensation layer (CL) altitude The naive solution (that works quite well) is: 1/ draw SSH line from dew point at ground level 2/ draw DALR (dry adiabatic lapse rate) line from ground temperature (or optimistically max daily predicted temperature at ground level) 3/ interesection of those two is gives you condensation layer - unless the climb/thermal is stopped by inversion (the DLR line meets intersects the atmosphere temperature below the CL level) Also interesting fact is that DALR ratio is not fixed to this value - the common value of 1°C/100m mostly works for flatlands with average moistured air, but in mountainous terrain usually 0,8°/100m gives results closer to reality.

[@pdk63]

How come that the DALR is different? I imagine the physics should be the same :)

[@PetrPolach]

@@pdk63 the biggest difference is that the real proces is not adiabatic. Those athmosphere models we use are only idealized models, with many factors taken out to simplify the reality so its easier to describe it mathematically. But its a good question why its not the same for mountinous areas... I have no answer for that.

[@MasteringParagliding]

Petr Polach it’s because the climb bumps into and collects air as it’s in contact with the terrain. I usually add 10% in energy for Bassano. Though in Greifenburg I add 20%, or 0,8°C as you suggest. It makes things much more accurate. Thanks for commenting.

[@DomesticDave]

Thanks, can't wait for more. Don't be too long please

[@amjadkhan1123]

Thank you for putting these together Kelly. Have watched them for once and will watch all of them at least 10 times to really absorb it all 😅

[@nigelwaller6171]

Thank you Kelly........short, clear and really helpful

[@keggz01]

Hi Kelly, thanks for the great vids. The reason that the ssh line is at that angle is because the dew point temp decreases at a rate of .5 degrees per 300m of altitude

[@MasteringParagliding]

keggz01 ok thanks a lot, next time I plot one I’ll bare that in mind.

[@fboriero1]

I love your book! Thanks for everything!

[@dieuwerf]

Great video. Awesome t-shirt. Man has taste!

[@MasteringParagliding]

Dieuwer Feldbrugge ha! QOTSA rule

[@jeffsinason4336]

thanks Kelly. Great information. Need the handcuffs off here!

[@airgaborpara3824]

Hi Kelly, I am Gabor B. the author of Tailwind and Bushlanding bestseller book and happy to wait for the next chapter of the Skew T guide. Especially now, I just realized that paper wasnt your ECG/EKG diagramm on the table, actually it was about meteo for the day. :D