干旱区生态环境知识资源中心(Arid): 黄土高原地表能量闭合特征及土壤通量参数化

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	黄土高原地表能量闭合特征及土壤通量参数化
其他题名	Surface Energy-Balance Closure Features and Parameterization of Soil Heat Flux on the Loess Plateau
	岳平 1; 张强1 ; 赵文 1; 成华 2; 李宏宇 1; 王若安 1; 张建忠 2
来源期刊	冰川冻土
ISSN	1000-0240
出版年	2012
卷号	34 期号:3 页码:583-590
中文摘要	利用兰州大学半干旱气候与环境观测站(简称SACOL站)2008年夏季晴天的湍流、辐射、土壤温度和通量梯度观测资料,确定了晴天土壤热参数,并结合土壤热流量板测量的温度积分法把实际测量通量推算到地表;讨论了典型黄土高原沟壑区土壤热量储存对地表能量闭合率的影响;建立了计算地表土壤热通量的模型.结果表明:黄土高原典型沟壑区夏季晴天平均土壤热容量为1.23*10~6 J.m~(-3).K~(-1);能量平衡方程中,以5cm埋深处HFP01SC热流量板观测值(G_5)表示土壤热通量时,SACOL站地表能量闭合率为75.7%.采用温度积分法,将HFP01SC的直接测量结果校正到地表(G_s)后,地表能量闭合率可以达到81.8%;0~5cm土壤层的热量储存对能量平衡的贡献为6.1%.模型计算得土壤热通量(G_m)与G_s之间的线性回归斜率为0.973(显著性水平为0.1).(H+LE)与(R_n-G_m)进行线性回归,得到地表能量闭合率为81.7%.表明模型与温度积分法计算计算土壤热通量非常接近,但通过参数化方法计算时仅需要知道R_n即可.
英文摘要	Based on the radiation,turbulence flux,soil temperature and soil heat flux data observed at the Semi-Arid Climate and Environment Observatory of Lanzhou University(SACOL) in a period of 6 consecutive fine days in the summer,2008,the soil thermal parameters at different depths on the Loess Plateau in the middle of Gansu province were determined;the ground heat fluxes were calculated by using the calorimetric method,which involves measurement by a HFP01SC self-calibrating heat flux plate buried at 5-cm depth and heat storage between the plate and the surface;a simple function between net radiation and surface ground heat fluxes were derived;and the influence of the ground heat flux on the surface energy budget in the semi-arid grassland ecosystem over the Loess Plateau was studied.The results show that: 1) The mean thermal capacity is 1.23*10~6 J·m~(-3)·k~(-1) in a gully area at SACOL;2) The surface energy closure rate is 75.7% for the typical Loess Plateau when use G_5 in the surface energy budget equation,but calorimetric method can improve the surface energy budget closure to 81.8%.The contribution of the heat storage between the heat flux plates buried at 5-cm and the surface to energy budget is 6.1% in the semi-arid grassland ecosystem at SACOL;3) A model relating net radiation(R_n) and the surface heat fluxes(G_s) is developed,from which a gradient of fitted line is 0.973(the significant level is 0.1).Under the condition of the 0.1 level of significance,the gradient of the linear regression between(H+LE) and(R_n-G_m) is 0.817(i.e.the surface energy closure rate was 81.7%).One can see that the modeled heat flux is closed to the heat flux calculated with calorimetric method.Calculation with the model only inputs a parameter,R_n.
中文关键词	黄土高原 ; 湍流通量 ; 土壤热参数 ; 能量闭合率
英文关键词	SACOL Semi-Arid Climate and Environment Observatory of Lanzhou University(SACOL) Loess Plateau turbulence fluxes soli thermal parameters surface energy-balance closure
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:4573356
来源机构	中国气象局兰州干旱气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227721
作者单位	1.中国气象局兰州干旱气象研究所, 甘肃省干旱气候变化与减灾重点实验室;;中国气象局干旱气候变化与减灾重点开放实验室, 兰州, 甘肃 730020, 中国; 2.张掖国家气候观象台, 张掖, 甘肃 734000, 中国
推荐引用方式 GB/T 7714	岳平,张强,赵文,等. 黄土高原地表能量闭合特征及土壤通量参数化[J]. 中国气象局兰州干旱气象研究所,2012,34(3):583-590.
APA	岳平.,张强.,赵文.,成华.,李宏宇.,...&张建忠.(2012).黄土高原地表能量闭合特征及土壤通量参数化.冰川冻土,34(3),583-590.
MLA	岳平,et al."黄土高原地表能量闭合特征及土壤通量参数化".冰川冻土 34.3(2012):583-590.