Based on the temperature of the black body (TBB),station observed and NCEP reanalysis data,the impacts of the eastward propagation of convective cloud systems over the Tibetan Plateau on the southwest vortex (SWV) for...Based on the temperature of the black body (TBB),station observed and NCEP reanalysis data,the impacts of the eastward propagation of convective cloud systems over the Tibetan Plateau on the southwest vortex (SWV) formation that occurred at 1800 UTC on 29 June 2003 are analyzed by using the Zwack-Okossi (Z-O) equation to diagnose the thermal and dynamic processes.It is found that,in summer,severe convective activities often occur over the Tibetan Plateau due to the abundant supply of moisture.The convective cloud near the east edge of the plateau could move eastward with a shortwave trough in the westerly.The divergent center that is induced by latent heat release,which is associated with severe convective activities,moves out with the convective cloud and contributes to the low level decompression which is favorable for the formation of plateau edge cyclogenesis (PEC).The Z-O equation indicates that,in this case,the latent heat release and convergence are the two most important factors for SWV formation,which amounts to about 42% and 15% of the term TOTAL,respectively.It is implied that the thermal process effect was more important than the dynamic process during SWV formation.展开更多
利用16个多态性较强、重复性好的随机引物对四川黑山羊多个种群的成年（1.5～2岁）黑山羊96只个体的血样DNA进行扩增,16个引物共扩增出170条多态的RAPD条带.对给定的标记,将“有带（1）”、“无带（0）”两类个体看作独立样本,采用SPSS...利用16个多态性较强、重复性好的随机引物对四川黑山羊多个种群的成年（1.5～2岁）黑山羊96只个体的血样DNA进行扩增,16个引物共扩增出170条多态的RAPD条带.对给定的标记,将“有带（1）”、“无带（0）”两类个体看作独立样本,采用SPSS软件的Compare Means中的Independent-samples T Test来比较两样本各数量性状平均值的差异.并根据两独立样本间个体表型值的分布筛选与性状真实关联的分子标记.结果表明,在黑山羊群体中共筛选到5个分子标记分别与不同性状相关,其遗传基础可能是该标记与控制性状的QTL或主基因连锁.展开更多
基金supported by the National Natural Science Foundation of China (Grant Nos. 40875021 and 40930951)the project of the State Key Laboratory of Severe Weather,Chinese Academy of Meteorological Sciences (Grant No. 2009LASW-A03)
文摘Based on the temperature of the black body (TBB),station observed and NCEP reanalysis data,the impacts of the eastward propagation of convective cloud systems over the Tibetan Plateau on the southwest vortex (SWV) formation that occurred at 1800 UTC on 29 June 2003 are analyzed by using the Zwack-Okossi (Z-O) equation to diagnose the thermal and dynamic processes.It is found that,in summer,severe convective activities often occur over the Tibetan Plateau due to the abundant supply of moisture.The convective cloud near the east edge of the plateau could move eastward with a shortwave trough in the westerly.The divergent center that is induced by latent heat release,which is associated with severe convective activities,moves out with the convective cloud and contributes to the low level decompression which is favorable for the formation of plateau edge cyclogenesis (PEC).The Z-O equation indicates that,in this case,the latent heat release and convergence are the two most important factors for SWV formation,which amounts to about 42% and 15% of the term TOTAL,respectively.It is implied that the thermal process effect was more important than the dynamic process during SWV formation.
文摘利用16个多态性较强、重复性好的随机引物对四川黑山羊多个种群的成年（1.5～2岁）黑山羊96只个体的血样DNA进行扩增,16个引物共扩增出170条多态的RAPD条带.对给定的标记,将“有带（1）”、“无带（0）”两类个体看作独立样本,采用SPSS软件的Compare Means中的Independent-samples T Test来比较两样本各数量性状平均值的差异.并根据两独立样本间个体表型值的分布筛选与性状真实关联的分子标记.结果表明,在黑山羊群体中共筛选到5个分子标记分别与不同性状相关,其遗传基础可能是该标记与控制性状的QTL或主基因连锁.
