陆面模式砾石参数化在BCC_AVIM陆面过程模式中的应用及检验  

Application and Test of Land Surface Model Gravel Parameterization in BCC_AVIM Land Surface Model

作　　者：马翠丽 吕世华[1,3] 潘永洁 张少波 李照国 姚闯 MA Cuili;LÜShihua;PAN Yongjie;ZHANG Shaobo;LI Zhaoguo;YAO Chuang(Chengdu University of Information Technology,Chengdu 610225,Sichuan,China;Baotou Meteorological Bureau,Baotou 014030,Inner-Mongolia,China;Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science and Technology,Nanjing 210044,Jiang su,China;Key Laboratory of Land Surface Process&Climate Change in Cold and Arid Regions,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,Gansu,China;Shanxi Climate Center,Taiyuan 030006,Shanxi,China)

机构地区：[1]成都信息工程大学大气科学学院,四川成都610225 [2]内蒙古包头市气象局,内蒙古包头014030 [3]南京信息工程大学气象灾害预报预警与评估协同创新中心,江苏南京210044 [4]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 [5]山西省气候中心,山西太原030006

出　　处：《高原气象》2020年第6期1232-1245,共14页Plateau Meteorology

基　　金：国家自然科学基金项目(41975007,41775016);第二次青藏高原综合科学考察研究项目(2019QZKK0103)。

摘　　要：考虑砾石(砾径大于2 mm)对陆面过程的作用,利用青藏高原玛多站实测资料检验陆面模式砾石参数化方案对BCC_AVIM陆面过程模式土壤水热模拟的影响。结果发现,砾石改变了土壤质地的组成,造成土壤中水热基本参数的变化,从而影响土壤导水率和土壤导热率,最终影响土壤温湿度的模拟。利用玛多站实测数据,对比新旧方案,发现新方案减小了土壤温度和土壤含水量的模拟值,减小了模拟结果的绝对偏差和均方根误差,增大了土壤温湿度模拟的相关系数,改善了原模式土壤水热模拟性能,尤其是深层土壤含水量的模拟效果提升明显。同时,新方案减小了浅层土壤含冰量的模拟,增加了深层土壤含冰量的模拟,增大了积雪覆盖率和积雪深度的模拟。Considering the effect of gravel(particle size≥2 mm)on the land surface process,using the measured data of the Maduo site on the Qinghai-Tibetan Plateau(QTP)to test the influence of the surface model gravel parameterization scheme on thermal and hydrological processes in soil containing gravel.The new scheme was implemented in the BCC_AVIM land surface process model of the National Climate Center.The results show that the gravel changes the composition of the soil texture,resulting the changes in the basic parameters of soil thermal and soil hydrological.So the soil hydraulic conductivity and soil thermal conductivity are affected.In the end,the simulation of soil temperature and humidity changes.Using the measured data of Maduo station,comparing the original and new scheme,it is found that the new scheme reduces the simulated values of soil temperature and soil water content,reduces the absolute deviation and root mean square error of the simulation results,and increases the correlation between soil temperature and soil moisture simulation.The coefficient improves the performance of the original model soil thermal and hydrological simulation,especially the simulation effect of deep soil water content.At the same time,the new scheme reduces the simulation of ice content in shallow soils,increases the simulation of ice content in deep soils,and increases the simulation of snow cover and snow depth.

关 键 词：砾石参数化 BCC_AVIM陆面模式 土壤温度 土壤湿度 

分 类 号：P437[天文地球—大气科学及气象学]