1. A sample of air at pressure p₁=1013mb (at the surface with temperature15°C) weighs 1Kg. The weight of water vapor in the sample is 3g. (Assume an average tropospheric lapse rate). a) Calculate its vapor pressure. b) The saturation vapor pressure (es): e, (T=15°C) = 17mb; e, (T=-12° C) = 2.4mb; e, (T=-35°C) = 0.314mb; e, (T=2°C)=7mb; e, (T= -40°C) = 0.189mb. c) What is the relative humidity of the sample at po? d) What is the relative humidity of the sample at height (T=-40°C)? Why is this value NOT realistic in the atmosphere? e) If the relative humidity is kept constant at the surface value throughout the troposphere, what is the % decrease of water vapor compared to the % decrease of pressure at the level in the troposphere.
1. A sample of air at pressure p₁=1013mb (at the surface with temperature15°C) weighs 1Kg. The weight of water vapor in the sample is 3g. (Assume an average tropospheric lapse rate). a) Calculate its vapor pressure. b) The saturation vapor pressure (es): e, (T=15°C) = 17mb; e, (T=-12° C) = 2.4mb; e, (T=-35°C) = 0.314mb; e, (T=2°C)=7mb; e, (T= -40°C) = 0.189mb. c) What is the relative humidity of the sample at po? d) What is the relative humidity of the sample at height (T=-40°C)? Why is this value NOT realistic in the atmosphere? e) If the relative humidity is kept constant at the surface value throughout the troposphere, what is the % decrease of water vapor compared to the % decrease of pressure at the level in the troposphere.
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Transcribed Image Text:1. A sample of air at pressure p₁ =1013mb (at the surface with
temperature 15°C) weighs 1Kg. The weight of water vapor in the
sample is 3g. (Assume an average tropospheric lapse rate).
a) Calculate its vapor pressure.
b) The saturation vapor pressure (e.): e, (T=15°C)=17mb;
e, (T=2°C)=7mb; e, (T = -12° C) = 2.4mb; e. (T = -35°C) = 0.314mb;
e, (T= -40° C) = 0.189mb.
c) What is the relative humidity of the sample at po?
d) What is the relative humidity of the sample at height
(T=-40°C)? Why is this value NOT realistic in the atmosphere?
e) If the relative humidity is kept constant at the surface value
throughout the troposphere, what is the % decrease of water
vapor compared to the % decrease of pressure at the level in the
troposphere.
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