Last change
on this file since 7541 was
7541,
checked in by fabienne.maignan, 2 years ago
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- Zhang publication on coupling factor
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-
Property svn:executable set to
*
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File size:
824 bytes
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1 | The specific humidity $q_s$ is a function of temperature $T$. Its values are : |
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2 | \begin{equation} |
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3 | q_s(T) = |
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4 | \begin{cases} |
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5 | 0 & \text{if} \quad T < 100K \\ |
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6 | \dfrac{M_{air}}{M_{vapor}} \cdot 10^{2.07203 - 0.0032099T - \frac{2484.896}{T} + 3.56654\log{T}} & \text{if} \quad 100K \leq T < 273K \\ |
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7 | \dfrac{M_{air}}{M_{vapor}} \cdot 10^{23.819 - \frac{2948.964}{T} - |
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8 | 5.028\log{T} - 29910.16\exp(-0.0699832\times T) + 25.21935\exp(-\frac{2999.924}{T}) } & \text{if} \quad 273K \leq T \leq 370K \\ |
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9 | \end{cases} %\] |
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10 | \end{equation} |
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11 | where : \\ |
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12 | \begin{itemize} |
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13 | \item $\dfrac{M_{air}}{M_{vapor}} = \dfrac{18.02 \times 10^{-3}}{28.964 \times 10^{-3}} \simeq 0.622 $ is the ratio between the molecular weight of dry air and \\ |
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14 | the molecular weight of water vapor. |
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15 | \item $\log(T) = \dfrac{\ln T}{\ln 10}$ |
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16 | \end{itemize} |
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17 | |
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