A) calculate the dry - adiabatic lapse rate for the earth’s troposphere in [ 0 k/km] given: = 7 5 , = 980 cm/ , = 50.1 x 10^−24 and

= 1.38 x 10^−16 /k respectively.

b) challenge question: if the parcel contains a lot of water vapor, as it rises further in altitude the parcel gets saturated with water vapor. the vapor eventually condenses to liquid droplets thereby releasing latent heat of condensation lowering the rate of cooling. this wet/moist adiabatic lapse rate is found to be smaller than the dry adiabatic lapse rate. calculate the wet/moist adiabatic lapse rate for the earth’s troposphere using the equation derived in the class.

given: t = 280 k, =1 =8.3 x10^7 erg/k/mole,

= 3 x10^7 =2 x 10^10 erg/g, = 5.1 x 10^11 / = 30.6 x10^− 24