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石羊河流域上游山谷水庫蒸發觀測與模擬
孫繼成1,康興奎2,任立新3
(1.甘肅省水利水電勘測設計研究院有限責任公司,甘肅 蘭州 730000; 2.武威職業學院,甘肅 武威 733000; 3.黃河水利委員會 上游水文水資源局,甘肅 蘭州 730030)
Observation and Simulation on the Evaporation of Valley Reservoirs in the Upstream of Shiyang River Basin
 SUN Jicheng1, KANG Xingkui2, REN Lixin3
(1.Gansu Province Water Conservancy and Hydropower Survey and Design Research Institute Co., Ltd., Lanzhou 730000, China; 2.Wuwei Occupational College, Wuwei 733000, China; 3.Upstream Hydrological and Water Resources Bureau, YRCC, Lanzhou 730030, China)

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人民黃河
  2019,Vol. 41(9): 41
  水文泥沙
石羊河流域上游山谷水庫蒸發觀測與模擬
孫繼成1,康興奎2,任立新3
(1.甘肅省水利水電勘測設計研究院有限責任公司,甘肅 蘭州 730000; 2.武威職業學院,甘肅 武威 733000; 3.黃河水利委員會 上游水文水資源局,甘肅 蘭州 730030))
doi:
Observation and Simulation on the Evaporation of Valley Reservoirs in the Upstream of Shiyang River Basin
 SUN Jicheng1, KANG Xingkui2, REN Lixin3
(1.Gansu Province Water Conservancy and Hydropower Survey and Design Research Institute Co., Ltd., Lanzhou 730000, China; 2.Wuwei Occupational College, Wuwei 733000, China; 3.Upstream Hydrological and Water Resources Bureau, YRCC, Lanzhou 730030, China)
全文: PDF (2.54MB)
摘要: 水面蒸發的準確量化對于干旱及半干旱區水資源的開發利用具有重要的指導意義。以石羊河流域上游3座中型山谷水庫及其周邊水文和氣象站E-601型蒸發皿蒸發為基礎資料,利用PenPan 模型模擬蒸發皿蒸發。研究表明:3座水庫蒸發皿年蒸發量自東向西遞增,分別為1 071.9、1 085.3、1 115.7 mm/a,這種差異受經向效應和海拔效應共同影響,且海拔效應占主導。原始的PenPan模型高估了蒸發皿蒸發,原因是基于Class-A蒸發皿蒸發的PenPan模型高估了凈輻射。改進的PenPan模型模擬值與觀測值基本一致,且模擬效果略優于原始的PenPan模型。水庫與氣象站的距離越近,改進的PenPan模型模擬效果越好,但蒸發量較大時,模型結果容易出現高估,這可能受風速影響,因此建議加強水庫表面凈輻射和風速觀測,以對PenPan模型進一步改進和修正。
關鍵詞:
Abstract: Accurately quantitative of openwater evaporation is great significant to the development and utilization of water resources, especially for the arid region. This study selected three mediumsized valley reservoirs and collected the pan evaporation measured by E601 pan from reservoirs, hydrological and meteorological stations in the upstream of Shiyang River Basin. In addition, the PenPan model was used to calculate the evaporation based on regular meteorological data. The results show that the measured Ep is increased from eastern to western reservoirs with the annual mean of 1 071.9, 1 085.3 and 1 115.7 mm/a. This difference is mainly controlled by the longitude and altitude effect, and the latter is predominant. Measured Ep is overestimated by 21% from the original PenPan model, which may attribute to the overestimated net radiation by it that originally developing for the E601 pan. The revised PenPan model based on the net radiation is not only in consistent with the measured Ep, but also the model performance (R2=0.70 and RMSE=1.21 mm/d)is better than original PenPan model (R2=0.68 and RMSE=1.51 mm/d). The distance between reservoirs and meteorological station is closer, the model performance is better, but the higher measured Ep is easier to overestimate. Thus, it suggested that the net radiation and wind speed must be measured intentionally to modify the PenPan model in the future.
Key words: pan evaporation; PenPan model; mediumsized valley reservoirs; Shiyang River basin
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作者簡介: 孫繼成(1985—),男,甘肅民樂人,工程師,碩士,主要從事水文分析及水資源開發利用研究工作
江苏7位数开奖历史