Radiosondes / Skew-T chart question
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Hey Windy! Finally switched to Premium account… not for any reason other than to support your app / platform because it is incredibly useful and deserves paying customers for the amount of attention you put into this app!
My question is on the Skew T charts:
When we pull up a Skew T, the user has the ability to slide parameters up / down the Skew T along the CAPE lines. Can you tell me what the sliding values represent? I don’t believe this is the dry adibat line… but maybe it is? Any help would be greatly appreciated… thank you again for all of the updates and very clean user interface! This app seriously has the most useful weather content of any app out there and I wish you continued success!
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@GSL118 said in Radiosondes / Skew-T chart question:
Hey Windy! Finally switched to Premium account… not for any reason other than to support your app / platform because it is incredibly useful and deserves paying customers for the amount of attention you put into this app!
My question is on the Skew T charts:
When we pull up a Skew T, the user has the ability to slide parameters up / down the Skew T along the CAPE lines. Can you tell me what the sliding values represent? I don’t believe this is the dry adibat line… but maybe it is? Any help would be greatly appreciated… thank you again for all of the updates and very clean user interface! This app seriously has the most useful weather content of any app out there and I wish you continued success!
I would appreciate more info on this also.
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@GSL118 said in Radiosondes / Skew-T chart question:
Hey Windy! Finally switched to Premium account… not for any reason other than to support your app / platform because it is incredibly useful and deserves paying customers for the amount of attention you put into this app!
My question is on the Skew T charts:
When we pull up a Skew T, the user has the ability to slide parameters up / down the Skew T along the CAPE lines. Can you tell me what the sliding values represent? I don’t believe this is the dry adibat line… but maybe it is? Any help would be greatly appreciated… thank you again for all of the updates and very clean user interface! This app seriously has the most useful weather content of any app out there and I wish you continued success!
I would like to know more about this topic too.
Appreciations ∠(°ゝ°) -
@gsl118 @rob-de-ruiter @Wendy123456
This diagram is too dark to see any lines, not sure if I can make it white or not.
Also, I'm on PC...I don't know the behaviour on a mobile device.What you are doing is lifting a parcel of air vertically from the surface, aloft into the higher portions of the atmosphere. I think of a parcel as a little balloon or box of air at the surface.
- Take your temperature (red) at the surface and lift it dry adiabatically using the dry (not saturated, DALR) adiabatic lapse rate line (the green dashed line moving from bottom right upwards to the left) - "lift it" means draw parallel to this line
- Take your dew point temperature (blue) at the surface and lift it using the mixing ratio (dotted yellowy line moving from bottom left upwards to the right)
- once those two lines meet - this is your LCL (Lifting Condensation Level)
- you've lifted a dry parcel of air to the point where temperature and dewpoint are equal, this is where condensation can begin.
- Now you continue lifting along the moist (saturated, wet, SALR) adiabatic lapse rate line, because your parcel of air is now saturated
- the area between this line and the temperature profile line is either CAPE (coloured red in picture) or CIN (coloured blue in picture) - depending on which side of the temperature profile line it is on.
CAPE - Convective Available Potential Energy. Positive buoyancy. Air is allowed to rise, the higher the value the stronger the updraft of thunderstorms.
CIN - Convective Inhibition. Negative buoyancy. Air isn't allowed to rise, the higher the value the harder it is for thunderstorms to form and general atmospheric mixing to occur.This whole process allows you to understand the stability of the atmosphere. (among many other things)
So, to answer the question posted almost 3 yrs ago (lol)
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Your mouse pointer:
The theoretical LCL point, where the Dry and Saturated Adiabat meet. Where condensation can occur.
The red and blue numbers are the temperature and dew point temperature respectively, at this point, at this height, in the atmosphere.
The white numbers are the surface temperature and dewpoint.
The white box on the left with numbers is the height in meters and atmospheric pressure in hectopascals.
The white box on the right with numbers is wind speed and direction at that height. -
The lines that show up are Dry and Saturated Adiabats (green dashed) and the mixing ratio (grey) and then they use grey to further the Dry Adiabat after the LCL for added confusion in my brain.
So what you can do is sort of raise your mouse up, keeping the surface dewpoint the same, and see at what temperature is needed at the surface in order to have larger CAPE values...for example.
Look at a morning ascent, it usually has a cap (an inversion), or amounts of CIN. You can project at what temperature the inversion will erode and allow mixing and thunderstorm development.
Other users said the videos in the below link helped them understand.
https://community.windy.com/topic/29047/lapse-rate-in-sounding-graphs?_=1783343086811Hope that makes sense and is helpful!
Any other people out there who know things please correct me if needed! :)
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@Wheats
Thanks a lot!
