test_w08_sols_final

# test_w08_sols_final - EATS 1011 3.0 Introduction to...

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EATS 1011 3.0 Introduction to Atmospheric Science 1 of 11 YORK UNIVERSITY FACULTY OF SCIENCE Department of Earth and Space Science and Engineering EATS1011 3.0 Introduction to Atmospheric Science Supplementary Mid-Term Atmospheric Test Exam length 75 minutes in the 3-5 pm window, 133 PSE 15 th March, 2006 Useful quantities that you may need. There are two sections. Attempt all the questions in section A which are worth approximately 80%. There are two questions in Section B worth ~20%. Permitted Aids: A calculator and a standard dictionary. Answer the questions in Part A and Part B in the Examination Book and be sure that your name and student number appears on the first page of the Examination Book. Universal gas constant R* = 8.3143x10 3 Jdeg -1 kmol -1 The Gas Constant for a molecule of mass, m, R = R*/m Specific heat at constant pressure for air, c p = 1,007 J/K/kg Surface area of a sphere of radius r = 4 π r 2 . Circumference of circle of radius r = 2 π r. Volume, V, of a sphere of radius r: V = 3 4 3 r π 1 AU = 1.50x10 8 km. Speed of light = 3.0x10 8 m/s. Density of air at MSL, ρ air = 1.2 kg m -3 . The Coriolis parameter, f = 2 Ω sin(latitude) The Coriolis parameter, f = 1.0 -4 s -1 at 43.5 ° latitude. Molecular weight of CO 2 = 44 Gravity on Mars = 3.7 m s -2 p = ρ RT Density of liquid H 2 O: ρ H2O = 10 3 kg/m 3 Dry adiabatic lapse rate, Γ D = g/c P = 10°C /km. Latent heat of Fusion for water ice = 335,000 J/kg Saturated adiabatic lapse rate, Γ M = 6°C /km (nominal).

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EATS 1011 3.0 Introduction to Atmospheric Science 2 of 11 Solar Constant, E = 1.38 kJ m -2 s -1 . Stefan-Boltzman constant, σ = 5.67x10 -8 J m -2 s -1 K -4. The Effective temperature, T eff = ((1 - A) E /(4 σ r p 2 )) 1/4 Mean radius of Earth = 6370 km Degrees Kelvin = degrees C + 273 1 year = 3.16x10 7 s. 1 mb = 100 Pascals The geostrophic wind, 1 g Pg Z V fn fn ρ ΔΔ == m s -1 Wien's Law λ max T = 2.9x10 3 μ m °K Stephan Boltzman Law Flux = σ T 4 J m -2 s -1 The scale height, H = RT/g metres Mean acceleration due to gravity on the Earth: g = 9.8 m s -2 The Hydrostatic Law: p(z) = p(0).exp(-z/H) where H is the scale height SVP (mb) Temperature T(°C) Over water Over ice 50 123.40 45 95.8 40 73.8 35 56.2 30 42.4 25 31.7 20 23.4 15 17.0 10 12.3 58 . 7 0 6.11 6.11 -10 2.86 2.60 -20 1.25 1.03 -30 0.51 0.38
EATS 1011 3.0 Introduction to Atmospheric Science 3 of 11 Section A Answer the questions on the sheet provided and not on the test paper. 1) According to the best geophysical information how old is the earth thought to be? a. 4.5 million years b. 4.5x10 6 years c. Both (1) and (2) are correct. d. 4.5 billion years e. 45 billion years. 2) The Earth's early atmosphere evolved from outgassing from volcanoes. What were the two main gases thought to be? a. NH 3 and O 2 . b. N 2 and O 2 . c. Water and ozone. d. H 2 and He. e. CO 2 and H 2 O . 3) All of the oxygen in the Earth's early atmosphere was tied up in chemical species other than O 2 . Where did the O 2 that we breathe today come from (select from the following).

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test_w08_sols_final - EATS 1011 3.0 Introduction to...

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