| CHARACTERISTICS OF THE INTERANNUAL AND INTERDECADAL TIMESCALES OF EVAPORATION IN NORTHERN CHINA IN THE RECENT 115 YEARS |
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| 作者姓名： | RONG Yan-shu TU Qi-pu DUAN Li-yao |
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| 作者单位： | RONG Yan-shu College of Water Resources and Environment，Hohai University，Nanjing 210098，China Tianjin Institute of Meteorological Science，Tianjin 300074，China TU Qi-pu Nanjing University of Information Science and Technology，Nanjing 210044，China DUAN Li-yao Tianjin Climate Centre，Tianjin 300074，China |
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| 摘 要： | 1. INTRODUCTION To calculate long-term average, total evaporation is considered to be equal to precipitation and has key effects on the global water balance 1]. In recent years, several studies on climatic changes with respect toevaporation were carried …
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| 关 键 词： | 重构蒸发作用 中国 水流动力学 能量光谱法 时间尺度 |
| 收稿时间： | 2006-01-05 |
Characteristics of the interannual and interdecadal timescales of evaporation in Northern China in the recent 115 years |
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| RONG Yan-shu TU Qi-pu DUAN Li-yao.CHARACTERISTICS OF THE INTERANNUAL AND INTERDECADAL TIMESCALES OF EVAPORATION IN NORTHERN CHINA IN THE RECENT 115 YEARS[J].Journal of Hydrodynamics,2006,18(5):593-596. |
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| Authors: | Yan-shu Qi-pu TU Li-yao DUAN |
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| Institution: | aCollege of water resources and environment, Hohai University, Nanjing 210098, China;bTianjin Institute of Meteorological Science, Tianjin 300074, China;cNanjing University of Information Science and Technology, Nanjing 210044, China;dTianjin Climate Centre, Tianjin 300074, China |
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| Abstract: | Evaporation plays an important role in water balance on the land surface. In Northern China, the evaporation series of the recent 115 years was reconstructed on the basis of Thornthwaite evaporation formula. The characteristics of the reconstructed series were analyzed using 10-year running mean filter, power spectrum method, and running t-text of abrupt changes on the paper. The results showed that there were remarkable interannual fluctuations with timescales of about quasi-8-year, 3-4-year, and quasi-2-year, and interdecadal oscillations with timescales of 57.5-year, quasi-23-year, and 11.5-year. Meanwhile, the abrupt changes of the evaporation series were also of interdecadal timescale. Either interannual fluctuations or interdecadal oscillations of evaporation were closely related to variations in air temperatures and precipitation. |
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| Keywords: | reconstructed evaporation series interannual timescale interdecadal timescale Northern China |
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