Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s10584-018-2328-6 |
Climate warming increases vertical and seasonal water temperature differences and inter-annual variability in a mountain lake | |
Niedrist, G. H.1; Psenner, R.1,2; Sommaruga, R.1 | |
2018-12-01 | |
发表期刊 | CLIMATIC CHANGE |
ISSN | 0165-0009 |
EISSN | 1573-1480 |
出版年 | 2018 |
卷号 | 151页码:473-490 |
文章类型 | Article |
语种 | 英语 |
国家 | Austria; Italy |
英文摘要 | Lakes around the world are warming, but not all water layers are warming at the same rate, and some are even cooling. Most studies have focused on summer lake water surface temperatures or analyzed short-time series. Here, we analyzea 44-year time series of water temperature from nine depths in a small mountain lakeusing dynamic linear models and temporal trend decomposition. We observe a significant long-term warming trend, but this occurred only from August to December in all water layers. The lake warmed ca. twice as fast (0.23 degrees C decade(-1)) as the air, but warming of the epilimnion slowed down remarkably (from 0.65 to 0.10 degrees C per decade) after 1993, a consequence of changing stratification timing. Deeper water layers even cooled thereafter, pointing to a stronger isolation from surface layers, which were still warming over the whole study period. This differential warming of the lake was accompanied by significant shifts of lake freezing and thawing dates leading to shorter ice-cover periods (similar to 5days decade(-1)). As a result, the thermal Schmidt stability of the water column strengthened, but also temperature variance in the epilimnion increased significantly, together with increasing variance and extremes of local air temperature. Our results show a significant autumn/winter warming effect of lake water together with an increasing intensity of temperature fluctuations in this seasonally ice-covered mountain lake, suggesting that current broad scale estimates of climate change impacts on lakes, based on summer temperature measurements and surface layers, do not fully reflect the effect of climate change. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452480700008 |
WOS关键词 | AIR-TEMPERATURE ; THERMAL REGIME ; HEAT WAVES ; STRATIFICATION ; COHERENCE ; IMPACTS ; MODEL ; ALPS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30339 |
专题 | 气候变化 |
作者单位 | 1.Univ Innsbruck, Dept Ecol, Technikerstr 25, A-6020 Innsbruck, Austria; 2.Eurac Res, Via Druso 1, Bolzano, Italy |
推荐引用方式 GB/T 7714 | Niedrist, G. H.,Psenner, R.,Sommaruga, R.. Climate warming increases vertical and seasonal water temperature differences and inter-annual variability in a mountain lake[J]. CLIMATIC CHANGE,2018,151:473-490. |
APA | Niedrist, G. H.,Psenner, R.,&Sommaruga, R..(2018).Climate warming increases vertical and seasonal water temperature differences and inter-annual variability in a mountain lake.CLIMATIC CHANGE,151,473-490. |
MLA | Niedrist, G. H.,et al."Climate warming increases vertical and seasonal water temperature differences and inter-annual variability in a mountain lake".CLIMATIC CHANGE 151(2018):473-490. |
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