Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-016-3347-5 |
Temperature reconstruction from the length fluctuations of small glaciers in the eastern Alps (northeastern Italy) | |
Zecchetto, Stefano1; Serandrei-Barbero, Rossana2,3; Donnici, Sandra2 | |
2017-07-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2017 |
卷号 | 49 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy |
英文摘要 | In this study, a linear model computing the air temperature fluctuations from the measured glacier snout fluctuations has been applied, for the first time, to three small glaciers in the western Tauern Alps (eastern Alps) in the period 1929-2011. The considered glaciers, with areas between 0.2 and , are characterized by relevant time variations of their morphology, length and slope. The model requires the knowledge of two parameters: the glacier climate sensitivity and the glacier response time , both depending on the glacier morphological characteristics and on the precipitation. Applied to the glaciers assuming and as in the original formulation, it underestimates the temperature increase of derived over the whole period from the in situ data. Given the characteristics of these small glaciers, these parameters have been recalibrated by means of a non-linear least-square regression using an independent set of glaciers. Their mean value is of about 210 m/K and 3.8 years respectively. With the recalibrated values of the new glacier climate sensitivity and response time , the temperature fluctuations derived by the model reproduce well those obtained from the observed temperatures computed over the hydrological year, with linear correlations between 0.8 and 0.9. The increase of the modeled mean temperature over the whole period fits in with that derived from observed temperature. Considering that the length fluctuations of these small glaciers affect significantly their slope and length, we tested the impact in the model of a time dependent formulation of and : the results indicate slight improvements both in the values of the correlation between the reconstructed and the observed temperature fluctuations and in the global temperature increase. Given the above value of climate sensitivity, the large retreat of the small alpine glaciers threatens their survival within a few decades, but the morphological changes in progress may counteract the glacier disappearance. |
英文关键词 | Glacier fluctuations Air temperatures Eastern Alps Climate sensitivity |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403716500021 |
WOS关键词 | MASS-BALANCE ; CLIMATE-CHANGE ; CHANGING CLIMATE ; SENSITIVITY ; PRECIPITATION ; VARIABILITY ; SWITZERLAND ; RETREAT ; BASINS ; RUNOFF |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/35744 |
专题 | 气候变化 |
作者单位 | 1.CNR, ISAC, Padua, Italy; 2.CNR, ISMAR Inst Sci Marine, Venice, Italy; 3.Comitato Glaciol Italiano, Turin, Italy |
推荐引用方式 GB/T 7714 | Zecchetto, Stefano,Serandrei-Barbero, Rossana,Donnici, Sandra. Temperature reconstruction from the length fluctuations of small glaciers in the eastern Alps (northeastern Italy)[J]. CLIMATE DYNAMICS,2017,49. |
APA | Zecchetto, Stefano,Serandrei-Barbero, Rossana,&Donnici, Sandra.(2017).Temperature reconstruction from the length fluctuations of small glaciers in the eastern Alps (northeastern Italy).CLIMATE DYNAMICS,49. |
MLA | Zecchetto, Stefano,et al."Temperature reconstruction from the length fluctuations of small glaciers in the eastern Alps (northeastern Italy)".CLIMATE DYNAMICS 49(2017). |
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