Especially, global transformation , the water balance, carbon balance and drought forecast in district, etc , which all require quantitative surface flux .

• 尤其全球变化、区域水分平衡、碳平衡和区域旱灾预报等等都需要定量的地表通量信息(辐射通量、显热通量、潜热通量、土壤热通量)。