NUMERICAL SIMULATION OF LAND SURFACE PROCESS AND ATMOSPHERE BOUNDARY LAYER STRUCTURE OVER SMALL HILL UNDERLYING SURFACE

Hu Xiaoming; Liu Shuhua

Vol.16, NO.1, 2005

Article Contents

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Hu Xiaoming, Liu Shuhua. Numerical simulation of land surface process and atmosphere boundary layer structure over small hill underlying surface. J Appl Meteor Sci, 2005, 16(1): 13-23.

Citation:

Hu Xiaoming, Liu Shuhua. Numerical simulation of land surface process and atmosphere boundary layer structure over small hill underlying surface. J Appl Meteor Sci, 2005, 16(1): 13-23.

Hu Xiaoming, Liu Shuhua. Numerical simulation of land surface process and atmosphere boundary layer structure over small hill underlying surface. J Appl Meteor Sci, 2005, 16(1): 13-23.

Citation:

Hu Xiaoming, Liu Shuhua. Numerical simulation of land surface process and atmosphere boundary layer structure over small hill underlying surface. J Appl Meteor Sci, 2005, 16(1): 13-23.

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NUMERICAL SIMULATION OF LAND SURFACE PROCESS AND ATMOSPHERE BOUNDARY LAYER STRUCTURE OVER SMALL HILL UNDERLYING SURFACE

Department of Atmospheric Sciences, the School of Physics, Pek ing University, Beijing 100871

Received Date: 2003-08-19
Rev Recd Date: 2003-12-26
Publish Date: 2005-02-28

Abstract

Abstract

A modified parameterized method of land surface physical process and a 3-dimensional transfer model are used for simulating features of surface heat flux, surface temperature, temperature profile, humidity profile, turbulence energy and so on over a small hill underlying surface.The result show s that the wind field is affected by the topography, also the turbulence transfer is affected, and the influence make the atmospheric temperature near g round surface behind the hill higher than that in front of the hill.The result is reasonable and the simulation is satisfactory.In addition, the model can also be used for other homogeneous and inhomogeneous terrain and mesoscale model.
- Atmosphere boundary layer;
- Land surface physical process;
- 3-dimensional transfer model;

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References(15)

Figures and Tables

图 1 模式模拟地形高度 (单位:m)

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图 2 18:00垂直剖面风速矢量图

(单位:m·s ^-1, 格距为1 km)

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图 3 垂直剖面湍流能量等值线图

(单位:m ²·s ^-2, 格距为1 km)

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图 4 山前 (a) 和山后 (b) 的湍流能量廓线日变化

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图 5 湍流交换系数的垂直剖面图

(单位:m²·s^-1, 格距为1 km)

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图 6 山前 (a) 和山后 (b) 温度廓线的日变化

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图 7 山前山后的地面与参考层（10cm）温差日变化

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图 8 山前山后感热通量日变化图

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图 9 18:00垂直剖面等位温线图

(单位:K, 格距为1 km)

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图 10 100 m高度水平风场 (单位:m·s^-2, 格距为1 km)

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图 11 山高增加后的垂直剖面湍流场

（单位：m^-2·s^-2, 格距为1km）

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图 12 山高增加后山前山后感热通量日变化图

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图 13 山高增加后的垂直剖面等位温线 (单位:K)

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表 1 初始水汽廓线

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