A surface shows daily temperature fluctuations with amplitude 23 K, lagging 2 3 hours behind the fluctuations in incoming solar radiation Use the model of thermal inertia developed in this chapter to estimate (i) The value of cK, (ii) The amplitude of the variations in the incoming solar flux, if the value of is taken as 5 5 W m 2 K 1 By differentiating Stefans law with respect to temperature, show that this value of corresponds to an emissivity of approximately 1 if T 290 K

Question: A surface shows daily temperature fluctuations with amplitude 23 K, lagging 2.3 hours behind the fluctuations in incoming solar radiation. Use the model of thermal

A surface shows daily temperature fluctuations with amplitude 23 K, lagging 2.3 hours behind the fluctuations in incoming solar radiation. Use the model of thermal inertia developed in this chapter to estimate

(i) The value of ρcK,
(ii) The amplitude of the variations in the incoming solar flux, if the value of α is taken as 5.5 W m^–² K^–¹. By differentiating Stefan’s law with respect to temperature, show that this value of α corresponds to an emissivity of approximately 1 if T̅ = 290 K.

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