Using daily sounding data and water resources data from 1997-1999, the spatial-temporal characteristics and the water balance relations of land-atmosphere system are analyzed.

利用1997～1999年逐日探空资料和同期水文水资源资料，分析了山东省域空中水汽资源的时空分布特征及地-气系统的水量平衡关系。

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In 1991, Gore wrote the bestseller, "Earth in the Balance, " a call to arms to protect the air, water and land.

CNN: Gore adviser proposes global environmental watchdog