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dc.contributor.advisorB.J. Tsuangen_US
dc.contributor.authortu, Chia-yingen_US
dc.description.abstractSurface air temperature is a very important meteorological factor that concerns many people. This study develops a PBL-and-Land model to determine air temperature without using a prescribed climatic temperature. Case studies on Metropolitan Taipei and City Hualian indicate that the correlation coefficients between calculated air temperature and observation are as high as 0.96 with standard errors less than 1.5C in the period of simulation from 1994 to 1996. Several parameters in the land surface model are decided by calibration and are verified to apply to Taiwan area. Simulation results indicate that the design of a scheme to accommodate the effect of evaporation from skin reservoirs is necessary to decide the air temperature immediately following rain, and the design of a scheme to account for transpiration from vegetated areas is necessary to determine the mean temperature of an urban area. Air temperature and other physical properties including skin temperature, mixing layer height, latent heat, etc. are obtained from model simulation. In the advantage of efficient calculation, the physical mechanism and scheme in this model can be applied to air quality model. This model can also be used to investigate the heat island effect.en_US
dc.description.tableofcontentsChapter 1.Introduction Chapter 2.Model Formulation and Theory 2-1Nomenclature 2-2Governing Equation 2-3Model and Theory in PBL 2-3-1Potential Temperature in PBL 2-3-2Mixing Height of PBL 2-3-3Evaporation, Aerodynamic and Canopy Resistance (rc) 2-3-4Diffusion Coefficients 2-4Soil Process 2-5Parameterization Chapter 3.Simulation Method 3-1Model Description 3-1-1Overview of Model 3-1-2Subroutine T-Vdiff 3-1-3Flow Diagram 3-2Method 3-2-1Solar Radiation 3-2-2Longwave Radiation 3-2-3Roughness, Zero Displacement and Mixing Height 3-2-4Global Data Set in Taiwan Area 3-2-5Leaf Area Index ( LAI ) 3-3Studied Area 3-3-1Metropolitan Taipei 3-3-2Hualian Area Chapter 4.Case Study 4-1Metropolitan Taipei 4-1-1Parameter Calibration and Verification 4-1-2Simulation Result of Taipei Area 4-2Hualian Area 4-2-1Parameter Verification 4-2-2Simulation Result of Hualian Area 4-3Discussion 4-3-1Diurnal Variation 4-3-2Cold Front 4-3-3The Summer Periods 4-3-4Canopy Resistance ( rc ) Chapter 5.Conclusion Referenceen_US
dc.subjectair temperatureen_US
dc.subjectarea heat capacityen_US
dc.subjectland surface parameterizationen_US
dc.subjectaerodynamic resistanceen_US
dc.subjectcanopy resistanceen_US
dc.titleDevelopment of An Integrated PBL-and-Land Model to Simulate Air Temperatureen_US
dc.typeThesis and Dissertationzh_TW
item.openairetypeThesis and Dissertation-
item.fulltextno fulltext-
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