Dynamic Tropopause Potential Temperature & Cross-Sections

Dynamic tropopause maps:
        PotentialTemperature on the 2 PVU surface
★ The location of the local minimum of the dynamic tropopause θ (where local = 10˚ from Goose Bay, NL, Canada).
● Largest |∇θ| within 5˚ of local minimum in θ.
● Location of Goose Bay, NL, Canada.
/ Cross section parallel to the ∇θ-vector extending 1000 km from ★
The 1500 km range ring from Goose Bay.
≈ 250-hPa geopotential height.

Cross Sections:
        Ozone mixing ratio
        Relative humidity
— Potential temperature (every 5 K).
— The dynamic tropopause (2 PVU contour).
— Cross-section normal wind (m/s).
★ The location of the local minimum in the dynamic tropopause potential temperature from previous map.
● Largest |∇θ| within 5˚ of local minimum in θ.