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What is Adiabatic Lapse Rate?

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment. During ascent, the dry adiabatic lapse rate is 9.8 °C/km for unsaturated air parcels.

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Glossary

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The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...