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| 1 | 多套土壤温湿度资料在青藏高原的适用性显示文摘利用青藏高原中部和东部土壤温度和湿度观测资料,通过计算两套再分析资料(ERA-Interim和CFSR)和六套陆面模式资料(ERA/land、MERRA/land、GLDAS-NOAH、GLDAS-CLM、GLDAS-M OSAIC和GLDAS-VIC)分别与观测资料之间的平均偏差、偏差标准差、相关系数、标准差比等统计参数,结合Brunke排名法,综合评估了再分析资料和陆面模式资料中土壤温湿度数据在青藏高原的适用性。结果表明:对于土壤温度,CFSR与观测值最接近,其次是MERRA/land和GLDAS-CLM,而ERA-Interim和ERA/land与观测值相差较大;除GLDAS-CLM土壤温度比观测值偏高外,其他资料土壤温度在大部分站点比观测值偏低,其中ERA-Interim和ERA/land土壤温度比观测值偏低较多,部分站点平均偏差超过-20℃。对于非冻结期(5 10月)土壤湿度,GLDAS-CLM与观测值最接近,其次是GLDAS-NOAH或ERA-Interim;与观测值相比,CFSR、ERA-Interim和ERA/land的土壤湿度偏湿,平均偏差大部分在0.05~0.20 m3·m-3之间,而GLDAS-NOAH、GLDAS-CLM和GLDAS-M OSAIC的土壤湿度偏干。 | 刘川 余晔 解晋 周欣 李江林 葛骏 | 2015 | 高原气象2015，34，3： | 50 |
| 2 | Quadrant-Averaged Structure and Evolution Mechanisms of a Northeast Cold Vortex during Its Mature Stage显示文摘A Northeast China cold vortex(NCCV) that maintained from 0200 UTC 3 July to 0500 UTC 3 July 2013 and caused several heavy rainfall events was analyzed in detail to reveal its quadrant-averaged structure and main maintaining mechanisms during its mature stage. Results indicated the vortex's intensity, divergence, ascending motions, precipitable water(PW), and thermal structures were all characterized by significant unevenness, and their main pattern changed gradually during the mature stage. Mechanisms accounting for the maintenance of the NCCV were also characterized by remarkable unevenness. Within different quadrants, dominant factors for the vortex's evolution may have differed from each other significantly. The NCCV-averaged vorticity budget revealed that the vertical advection of vorticity, which is closely related to convective activities, was the most favorable factor for maintaining the NCCV, whereas the tilting effect, which is closely related to the vertical shear of the horizontal wind(horizontal vorticity), was the most detrimental factor. | LI Wei SHEN Xin-Yong FU Shen-Ming LI Wan-Li | 2015 | Atmospheric and Oceanic Science Letters2015，8，1： | 0 |
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