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首页> 外文会议>IEEE International Geoscience and Remote Sensing Symposium >Validation of the community land model and an improved soil parameterization scheme in typical wetland sites
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Validation of the community land model and an improved soil parameterization scheme in typical wetland sites

机译：典型湿地站点社区土地模型的验证和改良的土壤参数化方案

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Wetlands' soil hydrology and temperature changes greatly affect methane emissions, and further affect climate. Wetland processes are not modeled well yet in the community land model (CLM) and further study is needed. Wetlands are represented as saturated organic soil, instead of being treated as water bodies only without soil and vegetation in CLM. Wetland soils are discretized to fibric, hemic, and sapric layers accounting for the typical variations in hydraulic characteristics of organic soils in the newly parameterized model. Spin-up is achieved by repeating the full range of available years 3 times (3 spin-up cycles). Daily model output is averaged to monthly output for analysis. The original model (CLM3_cntrl) and the modified wetland scheme model (CLM3_wet) are run independently. Sensible and latent heat fluxes and soil temperatures are validated. The results show that the state variables are improved through the wetland soils parameterization compared to the original CLM model.
机译：湿地的土壤水文学和温度变化极大地影响了甲烷的排放，并进一步影响了气候。湿地过程尚未在社区土地模型（CLM）中很好地建模，需要进一步研究。湿地被表示为饱和的有机土壤，而不是在CLM中仅被视为没有土壤和植被的水体。在新参数化的模型中，湿地土壤被离散为纤维层，半边层和sapric层，这说明了有机土壤水力特性的典型变化。通过将整个可用年份范围重复3次（3个加速周期）来实现加速。每天的模型输出平均为每月的输出以进行分析。原始模型（CLM3_cntrl）和修改后的湿地方案模型（CLM3_wet）是独立运行的。显热通量和潜热通量以及土壤温度均得到验证。结果表明，与原始的CLM模型相比，通过湿地土壤参数化可以改善状态变量。

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