Abstract:Based on conventional observational data from the 17 meteorological stations in 7 years around Taihu Lake, a cluster analysis is carried out. The analysis indicates that there is divergence wind field (DWF) above the water surface under the weather condition of high temperature and gentle breeze, which is suitable for the cyanobacteria bloom. Being driven by DWF, the transportation of the algae must be different with the situation under the single wind field. Based on this phenomenon, typical cases are selected for the numerical simulation. The simulation result shows that nonuniform diabatic heating process causes local thermodynamic sub-circulation which is superimposed upon weak background wind field. It is the formation mechanism of DWF. The intensity of the DWF depends on the lake-land thermal difference and the speed of the background wind field.
王成林, 陈黎明, 潘维玉, 钱新. 适宜太湖蓝藻水华形成的风场辐散特征及其形成机制[J]. 中国环境科学, 2010, 30(9): 1168-1176.
WANG Cheng-Lin, CHEN Li-Ming, PAN Wei-Yu, QIAN Xin. Divergence characteristics and formation mechanism of wind field appropriate for the cyanobacteria bloom in Taihu Lake. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(9): 1168-1176.