基于Noah-MP模式的影响青藏高原冻融过程参数化方案评估  

Assessment of Freeze-thaw Process Simulation in Qinghai-Tibetan Plateau by Different Parameterization Schemes based on Noah-MP Land Surface Model

作　　者：刘火霖 胡泽勇 韩赓[3] 裴昌春 LIU Huolin;HU Zeyong;HAN Geng;PEI Changchun(Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions,Northwest Institute of Eco-Environment Resources,Chinese Academy of Sciences,Lanzhou 730000,Gansu,China;Xiamen Jimei Meteorological Bureau,Xiamen 361000,Fujian,China;Quanzhou Meteorological Bureau of Fujian province,Quanzhou 362000,Fujian,China;Chinese Academy of Sciences Center for Excellence in Tibetan Plateau Earth Sciences,Beijing 100101,China)

机构地区：[1]中国科学院西北生态环境资源研究院/中国科学院寒旱区陆面过程与气候变化重点实验室,甘肃兰州730000 [2]厦门市集美区气象局,福建厦门361000 [3]福建省泉州市气象局,福建泉州362000 [4]中国科学院青藏高原地球科学卓越创新中心,北京100101

出　　处：《高原气象》2020年第1期1-14,共14页Plateau Meteorology

基　　金：中国科学院战略性先导科技专项(XDA2006010101);中国科学院寒旱区陆面过程与气候变化重点实验室开放基金项目(LPCC201507);第二次青藏高原综合科学考察研究项目(2019QZKK0103);国家重点研发计划项目(2018YFC1505701);国家自然科学基金项目(91837208,41661144043,91537101)

摘　　要：针对陆面模式冻融过程模拟偏差较大问题,基于Noah-MP模式对冻融参数化方案进行比较分析,并利用观测资料对模拟试验结果进行评估。结果表明:Noah-MP模式能够较好地模拟出青藏高原冻融过程特征;冻融过程模拟对冻融参数化方案相当敏感,冻结阶段到融化阶段期间,4组试验模拟值差异显著,融化阶段之后到冻结阶段之前,4组试验模拟值相当一致;相对于过冷水参数化方案,冻土渗透率参数化方案对冻融过程期间土壤温度的模拟更为敏感,过冷水参数化方案不同会导致冻融过程期间土壤液态水含量模拟值差异显著。地表能量通量模拟对冻融参数化方案相当敏感,4组试验地表能量通量模拟值在冻结阶段、冻结稳定阶段、融化阶段均存在显著差异。Considering the large simulation bias of the freezing-thawing process from land surface models,an comparative analysis of the freeze-thaw process parameterization schemes based on Noah-MP land surface model are carried out and the simulations of different freeze-thaw process parameterization schemes are verified by observation data.Results show that the Noah-MP land surface model can capture the characteristics of freezingthawing process.The freeze-thaw process simulation is quite sensitive to the freeze-thaw parameterization scheme.From the freezing phase to the melting phase,the simulated values of the four experimental groups are significantly different.Before the freezing phase and after the melting phase,the simulated values of the four experimental groups are quite consistent.Compared with the super cooled liquid water parameterization scheme,the frozen soil permeability parameterization scheme is more sensitive to the simulation of soil temperature during freezing-thawing period.Different super cooled liquid water parameterization schemes can cause large differences in simulated soil moisture.The simulation of surface energy flux is quite sensitive to the freeze-thaw parameterization scheme.There are significant differences in the simulation values of the surface energy flux by four tests during freezing phase,freezing stability phase and melting phase.

关 键 词：青藏高原 Noah-MP 冻融过程 

分 类 号：P435[天文地球—大气科学及气象学]