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Student Number 89621015
Author Yi-Nan Ku(古一男)
Author's Email Address No Public.
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Department Graduate Institute of Atmospheric Physics
Year 2002
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Effects of Topographic Slopes on Hydrological Processes
in the Penn State-NCAR MM5-LSM modeling system
Date of Defense 2003-06-16
Page Count 55
Keyword
  • Hydrological processes
  • OSU-land surface model
  • Topographic slops
  • Abstract ABSTRACT
    It has been widely accepted that land surface processes and their modeling play an important role, not only in large-scale atmospheric models, but also in regional and mesoscale atmospheric models. In the Penn State-NCAR fifth-generation Mesoscale Model (MM5) used has its origin at the Oregon State University land surface model (LSM). But in the MM5-LSM, hydrological processes that the horizontal distribution of surface water should be depended on the topographic slopes were not included. Topographic slopes will cases outflows from higher topography to lower. Then the horizontal distribution of surface water and the soil moisture should be changed. So, we wish to address this aspect of the problems.
    We will compare with between the third kinds of different physical state’s simulation (the MM5’s simulations, the MM5-LSM’s simulations and the MM5 - LSM’s simulations with topographic effect), we find that the LSM can improve the simulation of the surface energy balance with add soil moisture to the MM5.Then the horizontal distribution of surface water and the soil moisture will be more real in the MM5-LSM’s simulations with topographic effects. Therefore the surface energy fluxes will be different, including both the sensible and latent heat fluxes. Thus it is expected the modifications will not only affected the weather simulations but also the climate simulations.
    Table of Content 摘要………………………………………………………………….........i
    致謝………………………………………………………………………ii
    目錄……………………………………………………………………...iii
    圖表目錄………………………………………………………………....v
    第一章 序論…………………………………………………………....1
    1-1 前言……………………………………………………….1
    1-2 研究動機………………………………………………….1
    1-3 研究流程………………………………………………….3
    第二章 地勢傾斜斜率效應……………………………………………5
    2-1 水循環中的逕流………………………………………….5
    2-2 決定網格點地勢斜率…………………………………….5
    2-3 決定地表水量因地勢斜率的外流量…………………….6
    2-3.1 外流流速…………………………………………..6
    2-3.2 外流量……………………………………………..7
    第三章 MM5和OSU-LSM設定…………………….………………..9
    3-1 MM5模式之設定…………………………………………9
    3-1.1 MM5模式簡介…………………………………….9
    3-1.2 MM5模式的模擬設定…………………………….9
    3-1.3 MM5模式的修正………………………………...12
    3-2 OSU-LSM模式之設定……………………………….….12
    3-2.1 OSU-LSM模式設定……………………………...12
    3-2.2 OSU-LSM模式的修正…………………………...14
    第四章 模擬結果……………………………………………………..16
    4-1 地表水量………………………………………………...16
    4-2 地面溫度、地表潛熱通量、地表可感熱通量…………17
    4-2.1 地面溫度圖………………………………………17
    4-2.2 地表潛熱通量圖…………………………………19
    4-2.3 地表可感熱通量圖………………………………20
    4-3 降雨……………………………………………………...22
          4-3.1 模式模擬比較……………………………………22
          4-3.2 模擬結果和實際測站比較………………………23
        4-4 小結…………………………………………………...…23
    第五章 結論和未來展望……………………………………………..25
    5-1 結論……………………………………………………...25
    5-2 未來展望………………………………………………...26
    參考文獻………………………………………………………………..27
    附圖表…………………………………………………………………..30
    Reference 參考文獻
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    莊博清,2001:中尺度MM5數值模式與大氣擴散模式之整合應用研究。國立中央大學大氣物理研究所碩士論文,。
    黃惠君,2001:積雲參數化對台灣地區降雨模擬的影響。國立中央大學。大氣物理研究所碩士論文。
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    Advisor
  • Han-Ru Cho(禚漢如)
  • Files
  • 89621015.pdf
  • approve immediately
    Date of Submission 2003-06-26

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