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Which family shows the path of a saturated ascending parcel?

  • A.The dry adiabats, which continue to apply because the parcel remains adiabatic even after condensation begins
  • B.The mixing ratio lines
  • C.The isotherms, since the release of latent heat exactly offsets the cooling produced by the expansion above
  • D.The saturated adiabats

Answer: D

Saturated adiabats, also called moist adiabats or pseudoadiabats, show the temperature of a parcel in which condensation is occurring and the latent heat is offsetting part of the cooling. They are steeply curved, lying close to the dry adiabats at very low temperature where there is little water to condense and diverging markedly from them in warm moist air. Lines of constant wet bulb potential temperature are the same family. The quantity that varies and the quantity that does not are worth naming before any substitution is attempted.

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