Probability of Improving the Skill in Estimating Soil Moisture Using Land Surface Model

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Bibliographic Information

Other Title
  • 陸面過程モデルによる土壌水分推定精度の向上可能性

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Abstract

Integration of one-way uncoupled SiBUC (Simple Biosphere including Urban Canopy) land surface model has produced global soil moisture field under the framework of the 2nd Global Soil Wetness Project. Soil moisture estimation by SiBUC is evaluated against soil moisture observations derived from Global Soil Moisture Data Bank. Results show SiBUC reproduces reasonably inter-annual variability and seasonal cycle of soil moisture except a part of stations. What are the essential factors for reproducing seasonal cycle soil moisture? To answer this question, water balance components were analyzed. As a result, two typical regions were found: one region with high accuracy on soil moisture estimation is located where soil moisture has clear seasonal cycle because the seasonal cycle of precipitation is different from that of evapotranspiration, another region with low accuracy is located where precipitation are almost converted to evaporation.

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Details 詳細情報について

  • CRID
    1050282810670498048
  • NII Book ID
    AN00027784
  • ISSN
    0386412X
  • HANDLE
    2433/129289
  • Text Lang
    ja
  • Article Type
    departmental bulletin paper
  • Data Source
    • IRDB

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