塔克拉玛干沙漠腹地夏季夜间稳定边界层特征及其对沙尘气溶胶浓度的影响

朱从祯, 罗继成, 王敏仲, 孟露, 潘红林, 张建涛

Characteristics of the summer nighttime stable boundary layer in the hinterland of the Taklamakan Desert and its effect on dust aerosols concentration

Congzhen Zhu, Jicheng Luo, Minzhong Wang, Lu Meng, Honglin Pan, Jiantao Zhang

表3 不同天气状况下近地面层结稳定度、浮力项 Buoy 、垂直风切变项 VWS 、PM10 浓度平均特征

Table 3 The average characteristics of near-surface stratification stability， buoyancy term Buoy， vertical wind shear term VWS， and PM10 concentrations under different weather conditions

天气 状况 近地面层 结稳定度 Ri Buoy/(m?s-2) VWS/(m?s-1?km-1) PM10浓度 /(μg?m-3) 晴 极强稳定 3.700 -0.030 0.714 563 强稳定 0.360 -0.016 1.248 450 浮尘 极强稳定 3.040 -0.012 1.046 1 024 强稳定 0.170 -0.005 1.986 917 沙尘暴 弱稳定 0.073 -0.008 3.276 1 837 中性 0.008 -0.002 4.267 3 908