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CO$$_2$$交換過程を含む大気-土壌-植生モデル; SOLVEG2の開発データベース整備

Development of atmosphere-soil-vegetation model including CO$$_2$$ exchange processes; SOLVEG2

永井 晴康  

Nagai, Haruyasu

大気と陸面間の熱,水及びCO$$_2$$交換を研究するために、新しい大気-土壌-植生モデルSOLVEG2(SOLVEGバージョン2)の開発を行った。モデルは、大気,土壌,植生それぞれについての1次元多層サブモデルからなる。また、モデルは、植生層内の日射及び長波放射の伝達、及び大気,土壌,植生間のCO$$_2$$交換を計算する精緻な過程も含んでいる。本モデルは、通常の使用では気象データを上部境界条件として接地層大気,土壌及び植生層変数の鉛直分布を計算するだけであるが、3次元の大気モデルと結合して計算を行う機能も有する。

A new atmosphere-soil-vegetation model named SOLVEG2 (SOLVEG version 2) was developed to study the heat, water, and CO$$_2$$ exchanges between the atmosphere and land-surface. The model consists of one-dimensional multilayer sub-models for the atmosphere, soil, and vegetation. It also includes sophisticated processes for solar and long-wave radiation transmission in vegetation canopy and CO$$_2$$ exchanges among the atmosphere, soil, and vegetation. Although the model usually simulates only vertical variation of variables in the surface-layer atmosphere, soil, and vegetation canopy by using meteorological data as top boundary conditions, it can be used by coupling with a three-dimensional atmosphere model.

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