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

土壤水分是受气候变化影响的澳大利亚农业经济的重要资源。从太空对围场尺度土壤湿度的日常监测是为土地管理提供信息的有力工具，可以准确预测作物产量和牧草生长。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，必须针对澳大利亚的环境开发主动-被动土壤湿度检索算法，以便在2012年启动的SMAP遥感任务中充分利用它。

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.