Preface |
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xiii | |
1 Climate and Climate Models |
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1 | (26) |
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3 | (4) |
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1.2 Elementary Climate System Anatomy |
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7 | (2) |
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1.3 Radiation and Climate |
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9 | (6) |
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9 | (4) |
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1.3.2 Albedo of the Earth-Atmosphere System |
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13 | (1) |
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1.3.3 Terrestrial Infrared Radiation into Space (The IR or Longwave Radiation) |
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14 | (1) |
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1.4 Hierarchy of Climate Models |
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15 | (5) |
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1.4.1 General Circulation Models (GCMs) |
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16 | (1) |
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1.4.2 Energy Balance Climate Models |
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17 | (2) |
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1.4.3 Adjustable Parameters in Phenomenological Models |
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19 | (1) |
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1.5 Greenhouse Effect and Modern Climate Change |
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20 | (1) |
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20 | (2) |
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1.7 Cautionary Note and Disclaimer |
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22 | (1) |
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23 | (1) |
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23 | (4) |
2 Global Average Models |
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27 | (30) |
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2.1 Temperature and Heat Balance |
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27 | (4) |
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28 | (1) |
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2.1.2 Budyko's Empirical IR Formula |
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29 | (1) |
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2.1.3 Climate Sensitivity |
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30 | (1) |
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2.1.4 Climate Sensitivity and Carbon Dioxide |
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31 | (1) |
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31 | (9) |
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2.2.1 Frequency Response of Global Climate |
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32 | (3) |
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35 | (2) |
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2.2.3 Predictability from Initial Conditions |
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37 | (2) |
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2.2.4 Probability Density of the Temperature |
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39 | (1) |
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40 | (4) |
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2.3.1 White Noise Spectral Density |
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41 | (1) |
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2.3.2 Spectral Density and Lagged Correlation |
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41 | (1) |
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2.3.3 AR1 Climate Model Spectral Density |
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42 | (1) |
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2.3.4 Continuous Time Case |
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42 | (2) |
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2.4 Nonlinear Global Model |
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44 | (8) |
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2.4.1 Ice-Albedo Feedback |
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44 | (2) |
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2.4.2 Linear Stability Analysis: A Slope/Stability Theorem |
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46 | (1) |
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2.4.3 Relaxation Time and Sensitivity |
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47 | (1) |
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2.4.4 Finite Amplitude Stability Analysis |
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48 | (1) |
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2.4.5 Potential Function and Noise Forcing |
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49 | (3) |
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2.4.6 Relation to Critical Opalescence |
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52 | (1) |
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52 | (1) |
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Suggestions for Further Reading |
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53 | (1) |
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53 | (4) |
3 Radiation and Vertical Structure |
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57 | (28) |
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3.1 Radiance and Radiation Flux Density |
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58 | (3) |
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61 | (2) |
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3.2.1 Extinction and Emission |
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61 | (1) |
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3.2.2 Terrestrial Radiation |
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62 | (1) |
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63 | (1) |
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3.4 Plane-Parallel Atmosphere |
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64 | (1) |
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3.5 Radiative Equilibrium |
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65 | (3) |
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3.6 Simplified Model for Water Vapor Absorber |
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68 | (4) |
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72 | (1) |
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3.8 Solutions for Uniform-Slab Absorbers |
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73 | (2) |
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3.9 Vertical Heat Conduction |
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75 | (2) |
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77 | (1) |
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3.10 Convective Adjustment Models |
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77 | (2) |
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3.11 Lessons from Simple Radiation Models |
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79 | (1) |
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3.12 Criticism of the Gray Spectrum |
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80 | (2) |
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82 | (1) |
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Notes for Further Reading |
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83 | (1) |
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83 | (2) |
4 Greenhouse Effect and Climate Feedbacks |
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85 | (34) |
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4.1 Greenhouse Effect without Feedbacks |
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85 | (1) |
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4.2 Infrared Spectra of Outgoing Radiation |
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85 | (14) |
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4.2.1 Greenhouse Gases and the Record |
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92 | (1) |
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4.2.2 Greenhouse Gas Computer Experiments |
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92 | (7) |
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4.3 Summary of Assumptions and Simplifications |
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99 | (2) |
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4.4 Log Dependence of the CO2 Forcing |
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101 | (1) |
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4.5 Runaway Greenhouse Effect |
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102 | (3) |
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4.6 Climate Feedbacks and Climate Sensitivity |
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105 | (3) |
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4.6.1 Equilibrium Feedback Formalism |
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107 | (1) |
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108 | (1) |
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4.8 Ice Feedback for the Global Model |
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109 | (1) |
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4.9 Probability Density of Climate Sensitivity |
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110 | (2) |
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4.10 Middle Atmosphere Temperature Profile |
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112 | (3) |
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4.10.1 Middle Atmosphere Responses to Forcings |
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113 | (2) |
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115 | (1) |
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Notes for Further Reading |
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116 | (1) |
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116 | (3) |
5 Latitude Dependence |
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119 | (26) |
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5.1 Spherical Coordinates |
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120 | (1) |
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5.2 Incoming Solar Radiation |
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121 | (1) |
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5.3 Extreme Heat Transport Cases |
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122 | (1) |
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5.4 Heat Transport Across Latitude Circles |
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122 | (1) |
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5.5 Diffusive Heat Transport |
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123 | (2) |
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5.6 Deriving the Legendre Polynomials |
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125 | (4) |
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5.6.1 Properties of Legendre Polynomials |
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127 | (1) |
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5.6.2 Fourier-Legendre Series |
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128 | (1) |
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5.6.3 Irregular Solutions |
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128 | (1) |
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5.7 Solution of the Linear Model with Constant Coefficients |
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129 | (1) |
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5.8 The Two-Mode Approximation |
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129 | (4) |
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5.9 Poleward Transport of Heat |
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133 | (1) |
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5.10 Budyko's Transport Model |
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134 | (2) |
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136 | (1) |
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5.12 Advanced Topic: Formal Solution for More General Transports |
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137 | (1) |
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5.13 Ice Feedback in the Two-Mode Model |
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138 | (2) |
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5.14 Polar Amplification through Ice Cap Feedback |
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140 | (1) |
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141 | (1) |
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142 | (1) |
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Notes for Further Reading |
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142 | (1) |
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142 | (3) |
6 Time Dependence in the 1-D Models |
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145 | (30) |
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6.1 Differential Equation for Time Dependence |
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146 | (1) |
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146 | (2) |
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6.2.1 Decay of an Arbitrary Anomaly |
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147 | (1) |
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6.3 Seasonal Cycle on a Homogeneous Planet |
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148 | (5) |
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6.4 Spread of Diffused Heat |
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153 | (4) |
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6.4.1 Evolution on a Plane |
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155 | (2) |
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6.5 Random Winds and Diffusion |
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157 | (2) |
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159 | (4) |
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6.6.1 Explicit Finite Difference Method |
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159 | (3) |
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6.6.2 Semi-Implicit Method |
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162 | (1) |
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163 | (3) |
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6.7.1 Galerkin or Spectral Method |
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163 | (1) |
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6.7.2 Pseudospectral Method |
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164 | (2) |
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166 | (1) |
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166 | (1) |
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Notes for Further Reading |
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167 | (1) |
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167 | (2) |
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6.9 Appendix to Chapter 6: Solar Heating Distribution |
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169 | (6) |
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6.9.1 The Elliptical Orbit of the Earth |
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171 | (1) |
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6.9.2 Relation Between Declination and Obliquity |
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172 | (1) |
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6.9.3 Expansion of S(mu, tau) |
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172 | (3) |
7 Nonlinear Phenomena in EBMs |
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175 | (28) |
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7.1 Formulation of the Nonlinear Feedback Model |
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176 | (2) |
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7.2 Sturm-Liouville Modes |
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178 | (2) |
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7.2.1 Orthogonality of SL Modes |
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179 | (1) |
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7.3 Linear Stability Analysis |
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180 | (4) |
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7.4 Finite Perturbation Analysis and Potential Function |
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184 | (3) |
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7.4.1 Neighborhood of an Extremum |
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185 | (2) |
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7.4.2 Relation to Gibbs Energy or Entropy |
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187 | (1) |
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7.4.3 Attractor Basins-Numerical Example |
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187 | (1) |
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7.5 Small Ice Cap Instability |
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187 | (6) |
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7.5.1 Perturbation of an Exact Ice-Free Solution |
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190 | (1) |
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7.5.2 Frequency Dependence of the Length Scale |
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191 | (2) |
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7.6 Snow Caps and the Seasonal Cycle |
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193 | (1) |
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7.7 Mengel's Land-Cap Model |
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193 | (3) |
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196 | (3) |
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Notes for Further Reading |
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199 | (1) |
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199 | (4) |
8 Two Horizontal Dimensions and Seasonality |
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203 | (26) |
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8.1 Beach Ball Seasonal Cycle |
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203 | (2) |
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8.2 Eigenfunctions in the Bounded Plane |
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205 | (3) |
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8.3 Eigenfunctions on the Sphere |
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208 | (3) |
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8.3.1 Laplacian Operator on the Sphere |
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208 | (1) |
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8.3.2 Longitude Functions |
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209 | (1) |
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209 | (2) |
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211 | (1) |
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211 | (1) |
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212 | (1) |
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8.5 Solution of the EBM with Constant Coefficients |
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212 | (2) |
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8.6 Introducing Geography |
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214 | (2) |
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8.7 Global Sinusoidal Forcing |
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216 | (1) |
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8.8 Two-Dimensional Linear Seasonal Model |
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217 | (3) |
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8.8.1 Adjustment of Free Parameters |
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219 | (1) |
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8.9 Present Seasonal Cycle Comparison |
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220 | (1) |
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220 | (1) |
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220 | (1) |
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220 | (4) |
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Notes for Further Reading |
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224 | (1) |
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224 | (5) |
9 Perturbation by Noise |
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229 | (24) |
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9.1 Time-Independent Case for a Uniform Planet |
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230 | (4) |
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9.2 Time-Dependent Noise Forcing for a Uniform Planet |
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234 | (1) |
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9.3 Green's Function on the Sphere: f = 0 |
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235 | (2) |
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9.4 Apportionment of Variance at a Point |
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237 | (1) |
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9.5 Stochastic Model with Realistic Geography |
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238 | (5) |
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9.6 Thermal Decay Modes with Geography |
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243 | (5) |
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9.6.1 Statistical Properties of TDMs |
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246 | (2) |
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Notes for Further Reading |
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248 | (1) |
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249 | (4) |
10 Time-Dependent Response and the Ocean |
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253 | (34) |
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254 | (5) |
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10.1.1 Examples with a Single Slab |
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255 | (3) |
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10.1.2 Eventual Leveling of the Forcing |
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258 | (1) |
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10.2 Penetration of a Periodic Heating at the Surface |
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259 | (3) |
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262 | (7) |
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10.3.1 Decay of an Anomaly with Two Slabs |
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266 | (2) |
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10.3.2 Response to Ramp Forcing with Two Slabs |
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268 | (1) |
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10.4 Box-Diffusion Ocean Model |
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269 | (2) |
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10.5 Steady State of Upwelling-Diffusion Ocean |
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271 | (3) |
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10.5.1 All-Ocean Planetary Responses |
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273 | (1) |
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274 | (1) |
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10.6 Upwelling Diffusion with (and without) Geography |
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274 | (2) |
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10.7 Influence of Initial Conditions |
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276 | (1) |
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10.8 Response to Periodic Forcing with Upwelling Diffusion Ocean |
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277 | (3) |
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10.9 Summary and Conclusions |
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280 | (2) |
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282 | (5) |
11 Applications of EBMs: Optimal Estimation |
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287 | (34) |
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287 | (1) |
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11.2 Independent Estimators |
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288 | (2) |
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11.3 Estimating Global Average Temperature |
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290 | (8) |
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11.3.1 Karhunen-Loeve Functions and Empirical Orthogonal Functions |
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292 | (4) |
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11.3.2 Relationship with EBMs |
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296 | (2) |
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11.4 Deterministic Signals in the Climate System |
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298 | (19) |
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299 | (1) |
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11.4.2 Fingerprint Estimator of Signal Amplitude |
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299 | (1) |
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299 | (3) |
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11.4.4 Interfering Signals |
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302 | (1) |
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11.4.5 All Four Signals Simultaneously |
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303 | (3) |
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11.4.6 EBM-Generated Signals |
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306 | (4) |
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11.4.7 Characterizing Natural Variability |
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310 | (1) |
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311 | (3) |
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11.4.9 Discussion of the Detection Results |
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314 | (3) |
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Notes for Further Reading |
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317 | (1) |
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317 | (4) |
12 Applications of EBMs: Paleoclimate |
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321 | (32) |
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321 | (4) |
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12.1.1 Interesting Problems for EBMs |
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322 | (3) |
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325 | (2) |
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12.3 Glaciations in the Permian |
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327 | (4) |
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12.3.1 Modeling Permian Glacials |
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327 | (4) |
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12.4 Glacial Inception on Antarctica |
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331 | (2) |
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12.5 Glacial Inception on Greenland |
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333 | (2) |
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12.6 Pleistocene Glaciations and Milankovitch |
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335 | (15) |
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12.6.1 EBMs in the Pleistocene: Short's Filter |
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338 | (8) |
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346 | (2) |
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12.6.3 EBMs and Ice Volume |
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348 | (2) |
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12.6.4 What Can Be Done without Ice Volume |
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350 | (1) |
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Notes for Further Reading |
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350 | (1) |
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351 | (2) |
References |
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353 | (12) |
Index |
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