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| 陆面过程模式CLM4.5在半干旱区退化草原站的模拟性能评估 | |
| 引用本文： | 宋耀明,范轶,马天娇.陆面过程模式CLM4.5在半干旱区退化草原站的模拟性能评估[J].大气科学学报,2014,37(6):794-803. |
| 作者姓名： | 宋耀明 范轶 马天娇 |
| 作者单位： | 1. 气象灾害教育部重点实验室(南京信息工程大学),江苏南京,210044 2. 丹阳市气象局,江苏丹阳,212300 3. 常州市气象局,江苏常州,213000 |
| 基金项目： | 国家自然科学基金资助项目，高校博士点基金，气象灾害教育部重点实验室培养项目，江苏高校优势学科建设工程资助项目 |
| 摘 要： | 利用国际协同强化观测期(CEOP)在中国半干旱区退化草地站——通榆站的观测资料,对一个较为完善的陆面过程模式NCAR_CLM4.5(Community Land Model 4.5)的模拟性能进行检验。模拟结果与观测资料的对比表明,CLM4.5能很好地模拟出观测站点的辐射通量、水热交换、土壤温湿的空间分布和时间变化特征。但地表吸收的辐射模拟值略低,土壤湿度偏低,地表吸收的辐射及土壤温度等日变化略大;大气强迫变量处于某些特定的形势下时,模拟存在较大误差,如8月底的模拟。此外,冬季辐射通量、水热交换以及土壤温湿的模拟均存在较大误差,说明CLM4.5模式在冬季地表物理过程的参数化方案上需要进一步改进。 |
| 关 键 词： | CLM.模式 辐射通量 水热通量 土壤温湿 模拟性能评估 |
| 收稿时间： | 2014/1/5 0:00:00 |
| 修稿时间： | 2014/2/27 0:00:00 |
Evaluation of simulation performance of land surface model NCAR_CLM4.5 at a degrated glassland station in semi-arid area |
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| SONG Yao-ming,FAN Yi and MA Tian-jiao.Evaluation of simulation performance of land surface model NCAR_CLM4.5 at a degrated glassland station in semi-arid area[J].大气科学学报,2014,37(6):794-803. | |
| Authors: | SONG Yao-ming FAN Yi and MA Tian-jiao |
| Institution: | Key Laboratory of Meteorological Disaster(NUIST), Ministry of Education, Nanjing 210044, China;Danyang Meteorological Bureau, Danyang 212300, China;Changzhou Meteorological Bureau, Changzhou 213000, China |
| Abstract: | A well-structured land surface model NCAR_CLM4.5(Community Land Model 4.5) is evaluated using the observations at a degraded grassland station(Tongyu station) in semi-arid area in China during the Coordinated Enhanced Observing Period(CEOP).Results indicate that CLM4.5 can reproduce the spatial distribution and temporal variation of the radiation flux, water-heat flux, soil moisture and temperature very well.However, the model underestimates (overestimates) the surface absorbed radiation and soil moisture(diurnal variations of the surface absorbed radiation and soil temperature).Under some special atmospheric conditions, for example at the end of August, the model produces large biases.In addition, the simulations(including radiation flux, water-heat flux, soil moisture and temperature) departe largely from the observations in winter, which shows that the parameterization schemes of surface physical processes of CLM4.5 need to be further improved in winter. |
| Keywords: | CLM4 5 model radiation flux water-heat flux soil moisture and temperature evaluation of simulation performance |
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