A critical overview of pan evaporation trends over the last 50 years
文献类型：SCI/SSCI论文
| 作者 | Fu G. B. ; Charles S. P. ; Yu J. J. |
| 发表日期 | 2009 |
| 关键词 | yellow-river basin potential evapotranspiration trends contiguous united-states climate-change hydrological cycle surface temperature precipitation coefficients equations |
| 英文摘要 | Despite the observed increases in global average temperature, observations across the world show that the rate of pan evaporation at a regional scale has been steadily decreasing over the past 50 years. This is known as the pan evaporation paradox. This paper reviews current reported pan evaporation trends, examines available theoretical explanations about this "paradox", and discusses current research gaps and priorities. It concludes that: (1) three major potential causes of pan evaporation, solar radiation, vapour pressure deficit (VPD) and wind speed, have been changing in the last 50 years. The magnitude of changes and importance of each of these three causes varies from region to region, as does the pan evaporation trend, although overall there is a decreasing trend. (2) Currently two existing theories explaining the pan evaporation trends have limits and are only valid in some specific regions and seasons. Neither of them provides a fundamental physical-based theory that could be applied everywhere. (3) Further investigations are needed before we can fully understand the global evapotranspiration trend in global warming scenarios. |
| 出处 | Climatic Change |
| 卷 | 97 |
| 期 | 1-2 |
| 页 | 193-214 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0165-0009 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/24017]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Fu G. B.,Charles S. P.,Yu J. J.. A critical overview of pan evaporation trends over the last 50 years. 2009. |
入库方式： OAI收割
来源：地理科学与资源研究所
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