Active-passive microwave soil moisture remote sensing: Towards sustainable land and water management from space

土壤水分是澳大利亚农业经济的一种非常重要的资源，受到气候变化的压力。从太空对围场规模的土壤水分进行日常监测是为土地管理提供信息的强大工具，可以准确预测作物产量和牧场生长。在大陆尺度上，土壤湿度信息将带来更好的天气、气候和极端洪水预测技能，以及评估未来气候变化对澳大利亚影响的能力。因此，必须专门为澳大利亚环境开发主动-被动土壤湿度反演算法，以便在2012年启动SMAP遥感任务时充分利用该任务。

Soil moisture is a highly critical resource for the Australian agricultural economy which is stressed by climate change. Daily monitoring of paddock scale soil moisture from space represents a powerful tool to inform land management, allowing accurate crop yield and pasture growth predictions. At the continental scale, soil moisture information will result in better weather, climate and extreme flood prediction skill and the ability to assess the effects of future climate change on Australia. It is therefore imperative that active-passive soil moisture retrieval algorithms be developed specifically for the Australian environment in order to take full advantage of the SMAP remote sensing mission when it is launched in 2012.