To date, models describing the complex dielectric constant (CDC) of tundra soils with different contents of organic matter (more than 30%) in the P-band were poorly reported and not developed. In this letter, a refractive dielectric model for moist organic soils at a frequency of 435 MHz was developed. The model was developed on the basis of dielectric measurements of five samples of organic soils with different organic content from 35% to 80% and the soil moisture from air-dry to field capacity at a temperature of 20 °C. The developed model is a function of only two parameters, namely, the organic content by weight and volumetric soil moisture. The new model and future BIOMASS mission will be creating the bases for developing new soil moisture profile retrieving algorithms in the root zone.

中文翻译：

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435 MHz 频率下解冻有机土壤的介电模型

迄今为止，描述 P 波段有机质含量不同（超过 30%）的苔原土壤的复介电常数 (CDC) 的模型鲜有报道且未开发。在这封信中，开发了频率为 435 MHz 的潮湿有机土壤的折射介电模型。该模型是在对有机质含量从 35% 到 80% 不等的五个有机土壤样品以及 20 °C 温度下土壤水分从风干到田间持水量的介电测量的基础上开发的。开发的模型仅是两个参数的函数，即有机物重量含量和土壤体积水分。新模型和未来的 BIOMASS 任务将为在根区开发新的土壤水分剖面检索算法奠定基础。