| 用微气象方法估算淮河流域能量平衡(HUBEX/IOP 1998/99)的统计分析和比较研究 |
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| 作者姓名： | ZHU Zhilin SUN Xiaomin ZHANG Renhua |
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| 作者单位： | Institute of Geographical Sciences and Natural Resources Research，Chinese Academy of Sciences，Institute of Geographical Sciences and Natural Resources Research，Chinese Academy of Sciences，Institute of Geographical Sciences and Natural Resources Research，Chinese Academy of Sciences Beijing 100101，Beijing 100101，Beijing 100101 |
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| 基金项目： | This work was supported by the National Natural Sciences Foundation of China (Grant No. 49794030) and the Innovation Project of IGSNRR, CAS (Grant Nos. CXIOG-E04-02 and CXIOG-COO-05-02). |
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| 摘 要： | In order to study energy and water cycles in the Huaihe River Basin, micrometeorological measurements were carried out in Shouxian County, Anhui Province, during HUBEX/IOP (May to August 1998 and June to July 1999). The employed techniques included Bowen Ratio-Energy Balance (BREB) and Eddy Covariance (EC) methods. In this paper, the basic characteristics of the energy balance components in the district are analyzed. Furthermore, the results are compared with those from other regions of China.The main results are as follows: (1) There was a consistency between the available energy (Rn-G) and the sum of sensible (H) and latent (E) heat fluxes measured by the EC method (H+E)ec, but Ebr was slightly larger (about 10%) than Eec; (2) Most of the net radiation (Rn) was used to evaporate water from the surface. During HUBEX/IOP in 1998 and 1999, the mean daily amounts of Rn were 13.89 MJ m-2 d-1 and 11.83 MJ m-2 d-1, and the mean Bowen Ratios (β) were 0.14 (over ruderal) and 0.06 (over paddy) respectively; (3) The diurnal variation characteristic of β was larger and unsteady at sunrise and sunset, and smaller and steady during the rest of the daytime. Local advection appeared in the afternoon over paddy areas in 1999; (4) In comparison with the results from other regions of China, the nean β was the lowest (0.06) over paddy areas in the Huaihe River Basin and the highest (0.57) during June-August 1998 in Inner Mongolia grassland. The Bowen Ratio β is mainly related to the soil humidity.
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| 关 键 词： | 能量平衡 微气象方法 淮河流域 下垫面 |
| 收稿时间： | 18 January 2002 |
Statistical analysis and comparative study of energy balance components estimated using micrometeorological techniques during HUBEX/IOP 1998/99 |
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| ZHU Zhilin,SUN Xiaomin,ZHANG Renhua.Statistical analysis and comparative study of energy balance components estimated using micrometeorological techniques during HUBEX/IOP 1998/99[J].Advances in Atmospheric Sciences,2003,20(2):285-291. |
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| Authors: | Zhu Zhilin Sun Xiaomin Zhang Renhua |
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| Institution: | Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101,Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101,Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101 |
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| Abstract: | In order to study energy and water cycles in the Huaihe River Basin, micrometeorological measurements were carried out in
Shouxian County, Anhui Province, during HUBEX/IOP (May to August 1998 and June to July 1999). The employed techniques included
Bowen Ratio-Energy Balance (BREB) and Eddy Covariance (EC) methods. In this paper, the basic characteristics of the energy
balance components in the district are analyzed. Furthermore, the results are compared with those from other regions of China.
The main results are as follows: (1) There was a consistency between the available energy (R
n−G) and the sum of sensible (H) and latent (E) heat fluxes measured by the EC method (H+E)ec, but E
br was slightly larger (about 10%) than E
ec; (2) Most of the net radiation (R
n) was used to evaporate water from the surface. During HUBEX/IOP in 1998 and 1999, the mean daily amounts of R
n were 13.89 MJ m−2d−1 and 11.83 MJ m−2d−1, and the mean Bowen Ratios (β) were 0.14 (over ruderal) and 0.06 (over paddy) respectively; (3) The diurnal variation characteristic of β was larger and unsteady at sunrise and sunset, and smaller and steady during the rest of the daytime. Local advection appeared
in the afternoon over paddy areas in 1999; (4) In comparison with the results from other regions of China, the mean β was the lowest (0.06) over paddy areas in the Huaihe River Basin and the highest (0.57) during June–August 1998 in Inner
Mongolia grassland. The Bowen Ratio β is mainly related to the soil humidity. |
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| Keywords: | energy balance micrometeorological method Huaihe River basin different surface |
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