Faster increase in evapotranspiration in permafrost-dominated basins in the warming Pan-Arctic
文献类型：期刊论文
| 作者 | Huang, Qiwei1,2; Ma, Ning2; Wang, Ping2 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 615页码:12 |
| ISSN号 | 0022-1694 |
| 关键词 | Evapotranspiration Trend Climate warming Permafrost degradation Pan-Arctic |
| DOI | 10.1016/j.jhydrol.2022.128678 |
| 通讯作者 | Wang, Ping(wangping@igsnrr.ac.cn) |
| 英文摘要 | Land evapotranspiration (ET) is a key factor in the hydrological cycle and is particularly sensitive to climate change. In the past few decades, the Pan-Arctic region has witnessed a strong warming trend, causing substantial changes in ground surface conditions. However, it remains poorly understood how ET varies across such a region. Here, we investigated the spatial-temporal changes in ET over six large Pan-Arctic river basins using corrected ET estimates from GLEAM and ERA5-Land during 1981-2020. The 40-year mean annual ET in the Ob, Yenisei, Lena, Kolyma, Yukon, and Mackenzie River basins were approximately 366 mm.yr(-1), 271 mm.yr(-1), 228 mm.yr(-1), 239 mm.yr(-1), 278 mm.yr(-1), and 295 mm.yr(-1), respectively. Climatologically, permafrost-dominated basins tend to have lower ET than those with less permafrost. Temporally, the annual ET in permafrost-dominated basins has increased faster than that in less permafrost-developed basins over the past four decades. This increase is particularly prominent in the Kolyma River basin (completely covered by permafrost), where the significant trend in ET (7.5 mm.decade(-1), p < 0.001) is the highest among the six basins. Further analyses show that intensified permafrost thawing is likely the key factor contributing to increased ET in permafrost-dominated basins, as seen from the positive relationship between the thickening in the active layer (ALT) and the change in ET. Under an amplified warming background, ET in permafrost-dominated regions is expected to continue to increase. The results reported in this study improve our understanding of the variations in ET and the associated mechanisms in the changing Arctic. |
| WOS关键词 | TERRESTRIAL EVAPOTRANSPIRATION ; WATER-BALANCE ; LAND EVAPORATION ; OB RIVER ; CLIMATE ; FUTURE ; GRACE ; LAKES ; VARIABILITY ; HYDROLOGY |
| 资助项目 | National Natural Sci-ence Foundation of China ; [42061134017] ; [42271029] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000895773000001 |
| 资助机构 | National Natural Sci-ence Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/188256]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Ping |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Qiwei,Ma, Ning,Wang, Ping. Faster increase in evapotranspiration in permafrost-dominated basins in the warming Pan-Arctic[J]. JOURNAL OF HYDROLOGY,2022,615:12. |
| APA | Huang, Qiwei,Ma, Ning,&Wang, Ping.(2022).Faster increase in evapotranspiration in permafrost-dominated basins in the warming Pan-Arctic.JOURNAL OF HYDROLOGY,615,12. |
| MLA | Huang, Qiwei,et al."Faster increase in evapotranspiration in permafrost-dominated basins in the warming Pan-Arctic".JOURNAL OF HYDROLOGY 615(2022):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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