21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 9, Problem 13QP
To determine
Choose the correct option regarding the given statement.
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Monthly average wind speed values and standard deviations are given below for 30 m
height.
a. Calculate the average wind speeds for summer, autumn, winter and spring.
b. By using the Empirical Method, calculate the Shape factor, k and Scale factor, c in
the Weibull distribution for each season.
c. Calculate the Wind Power Density for winter.
d. Calculate the Wind Energy Density for winter.
Month
Average wind speed at 30 m, m/sec
Standard deviation, 6
June 2012
3.6200
1.88
July 2012
3.8133
1.98
August 2012
3.7700
1.96
September 2012
2.7055
1.40
October 2012
2.4668
1.28
November 2012
2.3668
1.23
December 2012
3.5441
1.84
January 2013
3.8812
2.02
February 2013
3.5094
1.83
March 2013
4.1341
2.15
April 2013
3.3659
1.75
May 2013
2.7908
1.45
3. Estimate the volume transport of the Hadley Cell given:
a. Meridional speed of 2 m/s
b. Depth of atmosphere 3000 m
c. Assume a latitude of 20°N
d. Radius of Earth, 6.378 x 10® m
The simple climate model quantifies layers of the atmosphere. What does this value represent in the atmosphere?
a.
the thickness of the atmosphere in kilometres
b.
the number of distinct layers of the atmosphere
c.
the pressure of air at the top most layer of the atmosphere
d.
the amount of greenhouse gasses in the atmosphere
Chapter 9 Solutions
21st Century Astronomy
Ch. 9.1 - Prob. 9.1CYUCh. 9.2 - Prob. 9.2CYUCh. 9.3 - Prob. 9.3ACYUCh. 9.3 - Prob. 9.3BCYUCh. 9.4 - Prob. 9.4CYUCh. 9.5 - Prob. 9.5CYUCh. 9 - Prob. 1QPCh. 9 - Prob. 2QPCh. 9 - Prob. 3QPCh. 9 - Prob. 4QP
Ch. 9 - Prob. 5QPCh. 9 - Prob. 6QPCh. 9 - Prob. 7QPCh. 9 - Prob. 8QPCh. 9 - Prob. 9QPCh. 9 - Prob. 10QPCh. 9 - Prob. 11QPCh. 9 - Prob. 12QPCh. 9 - Prob. 13QPCh. 9 - Prob. 14QPCh. 9 - Prob. 15QPCh. 9 - Prob. 16QPCh. 9 - Prob. 17QPCh. 9 - Prob. 18QPCh. 9 - Prob. 19QPCh. 9 - Prob. 20QPCh. 9 - Prob. 21QPCh. 9 - Prob. 22QPCh. 9 - Prob. 23QPCh. 9 - Prob. 24QPCh. 9 - Prob. 25QPCh. 9 - Prob. 26QPCh. 9 - Prob. 27QPCh. 9 - Prob. 28QPCh. 9 - Prob. 29QPCh. 9 - Prob. 30QPCh. 9 - Prob. 31QPCh. 9 - Prob. 32QPCh. 9 - Prob. 33QPCh. 9 - Prob. 34QPCh. 9 - Prob. 35QPCh. 9 - Prob. 36QPCh. 9 - Prob. 37QPCh. 9 - Prob. 38QPCh. 9 - Prob. 39QPCh. 9 - Prob. 40QPCh. 9 - Prob. 41QPCh. 9 - Prob. 42QPCh. 9 - Prob. 43QPCh. 9 - Prob. 44QPCh. 9 - Prob. 45QP
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- Which of the following best explains the condition of enhanced greenhouse effect?A. 81% of the radiation penetrating Earth’s atmosphere is of shorter wavelengths.B. UV-A and UV-B radiation exceeds 81% of the 1950 benchmark.C. infrared energy return to the earth is greater than 81%.D. re-radiation to outer space exceeds 81%.Reset SelectionMark for Review What’s This?arrow_forwardWhich of the following produces greenhouse gases? a. burning fossil fuelb. digestive processes in cowsc. automobile pollution d. all of the abovearrow_forwardThe ocean is mostly heated from the top, by light from the sun. The warmer surface water doesn’t mix much with the colder deep ocean water. This lack of mixing can be ascribed to a lack ofA. Conduction. B. Convection.C. Radiation. D. Evaporation.arrow_forward
- 3.Which of the following is the equation representing the direct varaition of the statement "Atmospheric pressure (P) varies inversely as the altitude (h)"? A. P= k/h B. P= h/k C. p=kh D. P=kharrow_forward10. A wind is blowing at a speed of 24 km/h in a directión 17° North of East. The eastward (X) component of the wind is a. 7.01 km/h b. 22.95 km/h c. -29.17 km/h d. 7.33 km/h 11. The radius of a carbon nanotube is 5nm. This radius in the S.I. system of units is a. 5*10^-3 m b. 5*10^-6 m c. 5*10^-9 m d. 5*10^-12 marrow_forwardiWhat type of air mass do you think would be responsible for cold, dry winter weather in Ireland? a.mT b.cT c.cP d.mP iiWhich of the following statements about specific humidity is TRUE? Select one: a.specific humidity changes as a given mass of air expands b.specific humidity is also known as relative humidity c.specific humidity is measured in grams of water vapour per kilogram of air d.specific humidity changes as a given mass of air is compressedarrow_forward
- 3. The basic barometer can be used to measure the height of a building. If the barometric readings at the top and at the bottom of a building are 675 and 695 mmHg, respectively, determine the height of the building. Take the densities of air and mercury to be 1.18 kg/m3 and 13,600 kg/m3, respectively.arrow_forwardIn cold weather, you can sometimes "see" your breath. What you are seeing is a mist of small water droplets, the same as in clouds and fog. Suppose air leaves your mouth with temperature 35°C and humidity 0.035 kg/m3 and mixes with an equal amount of air at 5°C. and humidity 0.005 kg/m3 What is the relative humidity of the mixed air if its temperature and humidity equal the averages of those of the two original air masses? Represent what happens by plotting three points in a graph like Figure 5.34.arrow_forwardWhat would be the classifications of the air masses that form over the following source regions? (a) Sahara Desert (b) Antarctic Ocean (c) Greenland (d) mid-Pacific Ocean (e) Siberiaarrow_forward
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