MODELINGOF ENERGY BUDGET USING SIMPLE BIOSPHERE MODEL VERSION 2(SiB2) OVER TIBETAN NAQU PRAIRIE

Gao Zhiqiu; Bian Lingen; Cheng Yanjie; Zhang Yabin; Wang Jinxing

Vol.13, NO.2, 2002

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Article Navigation > Journal of Applied Meteorological Science > 2002 > 13(2): 129-141

Gao Zhiqiu, Bian Lingen, Cheng Yanjie, et al. Modeling of energy budget using simple biosphere model version 2(SiB2) over Tibetan Naqu prairie. J Appl Meteor Sci, 2002, 13(2): 129-141.

Citation:

Gao Zhiqiu, Bian Lingen, Cheng Yanjie, et al. Modeling of energy budget using simple biosphere model version 2(SiB2) over Tibetan Naqu prairie. J Appl Meteor Sci, 2002, 13(2): 129-141.

Gao Zhiqiu, Bian Lingen, Cheng Yanjie, et al. Modeling of energy budget using simple biosphere model version 2(SiB2) over Tibetan Naqu prairie. J Appl Meteor Sci, 2002, 13(2): 129-141.

Citation:

Gao Zhiqiu, Bian Lingen, Cheng Yanjie, et al. Modeling of energy budget using simple biosphere model version 2(SiB2) over Tibetan Naqu prairie. J Appl Meteor Sci, 2002, 13(2): 129-141.

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MODELINGOF ENERGY BUDGET USING SIMPLE BIOSPHERE MODEL VERSION 2(SiB2) OVER TIBETAN NAQU PRAIRIE

Chinese Academy of Meteorological Sciences, Beijing 100081

Received Date: 2000-03-03
Rev Recd Date: 2000-08-20
Publish Date: 2002-04-30

Abstract

Abstract

SiB2 (Simple Biosphere model version 2) is adopted to simulate surface energy budget in offline mode with certain atmospheric forcing values measured in the near surface observations taken over in the Tibetan short grass prairie as a part of the GAME/Tibet (DEWEX Asian Monsoon Experiment/Tibet) experiment. On the condition that all parameters are reasonably fixed, the simulated net radiation, latent heat flux and soil heat flux are shown to be basically in agreement with observations with their relative errors being 8% (underestimated), 6% (underestimated), and 3% (underestimated), respectively; in meantime, SiB2 overestimates sensible heat flux by 40%. The detail analysis about energy components is conducted.
- Measurement;
- SiB2;
- Simulation;
- Energy budget

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References(12)

Figures and Tables

图 1 SiB2中的大气强迫变量时间变化曲线 (向下短波辐射 (实线, W·m ^-2), 地表向下长波辐射 (虚线, W·m ^-2), 水汽压 (hPa), 气温 (K) 及观测高度的水平风速 (m·s ^-1) 绝对值; 30 min时间步长内的降水量 (mm))

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图 2 1998年7月15~21日青藏高原那曲草原净辐射 (a)、感热通量 (b)、潜热通量 (c)、土壤热通量 (d) 及实测30 min时间步长内的降水量 (e) 模拟 (实线) 和测量 (点线) 结果

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图 3 模拟的1998年7月15~21日那曲观测站植被冠层 (实线) 和裸土地表 (虚线) 部分的净辐射 (a)、感热通量 (b)、潜热 (c)、土壤热通量 (d) 和实测30 min时间步长内的降水量 (e) 结果

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图 4 测量的1998年7月15~21日地表能量收支和余差R_n-(H +LE +G)

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图 5 1998年7月15~21日地表能量收支模拟结果

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图 6 1998年7、8、9月3个7天周期的地表能量收支测量 (a) 和模拟 (b) 结果

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图 7 模拟的净辐射与测量得到向下短波辐射值间的拟合关系

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References

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