I'm thinking, isn't it that sometimes it will be quite misleading? In this example, it doesn't look like convection at all, no chance for cumulus, since dry adiabat is steeper than air temperature change.
But, looking at the green line starting 4-5 C higher than the red line there's this impression that there will be convection, even a cumulus is depicted at 800.

Or am I missing something totally? :)

@vicb thanks for this clarification.

But, since as you noted "The air close to the ground doesn't usually get warmer as it would start rising" do I understand correctly that the green line should actually start (at the ground level) quite at the same temperature level that the red line starts?

So actually this 4-5 C constant is introduced just for better usability of the diagram, as this green and the red line would just overlap usually?

Btw - I get it now that considering model errors etc. it doesn't make such a difference, I just want to understand the logic behind.

Hi, amazing plugin ;)

One question (sorry if a dummy one):
How do you determine where the green line starts on the ground?

I see that "The green line shows the temperature of an ascending parcel" but why on the ground it has this particular temperature?

Is there some meteorological constant or formula based on which we know that a bubble would need this-or-that higher temperature than surrounding to start rising?

Correct me if I'm wrong, but to my mind, this starting point is crucial in understanding how strong and how high thermals will be, so I'm wondering (as a gliding pilot) how exactly to interpret this and how to actually know when during the day my lovely bubbles will start to rise.