摘要
从地温满足的热传导方程出发，导出了计算土壤平均和瞬时热通量的计算方案。该计算方案可同时计算出土壤热通量随时间和随深度的变化。它利用整层的地温信息来计算任一层的热通量，这种方案克服了用差分方案进行直接计算的局限性。然后使用中日亚洲季风观测实验期间的地温自动观测站资料和相应的常规观测资料，计算了青藏高原上土壤热通量及其变化，结果表明，不论是常规观测站还是自动观测站，其结果与青藏高原第一次观测实验所用热流板的直接观测结果是相近的，因而这种计算方案是实用而有效的。
The project calculating the average and instantaneous soil heat flux is deduced from the heat transmission equation satisfied by the ground temperature.This project can calculate the changes of the soil heat flux with time and depth simultaneously.It makes use of the whole information of the soil temperature to calculate the heat flux of any stratum and overcomes the insufficiency of direct calculation by difference project.To calculate the soil heat flux in Qinghai Tibet plateau it also makes use of the routine observational data and those by the automatic observation stations of the ground temperature during the Sino Japan observation experiment on the Asian monsoons.The results approximate those by the direct observation using the flux board in the first experiment in Qinghai Tibet plateau.Hence this project is practicable and efficient.
基金
"中日亚洲季风"课题
国家重大关键性项目
