淮河地区水稻田下垫面整体输送系数的确定与讨论

Bulk Transfer Coefficients over Rice Field Area of HUBEX

利用１９９９年夏季淮河流域能量和水循环试验（ＨＵＢＥＸ）补充加强观测期间寿县观测站探测资料，计算分析了水稻田下垫表面上的整体输送系数ＣＤ、ＣＨ；和ＣＥ，并与能量平衡结果进行了对比研究。结果表明，尽管水稻田下垫面上的稳定度集中在一狭小区间内，但整体输送系数ＣＤ、ＣＨ和ＣＥ仍取决于稳定度参数ｚ／Ｌ、观测高度ｚ和地表粗糙长度ｚ０。

The data obtained by the recruited observational period of HUBEX over rice field area at Shouxian site from June to July, 1999 are used to investigate the bulk transfer coefficients CD, CH and CE. Although the range of stability is relatively narrow over rice field area, the bulk transfer coefficients are mainly affected by the stability z / L, observational height z and the roughness length z0.