Mass Balance Reconstruction for Laohugou Glacier No. 12 from 1980 to 2020, Western Qilian Mountains, China
A long-series mass balance (MB) of glaciers can be used to study glacier–climate relationships. Using a distributed simplified energy balance model (SEBM) and an enhanced temperature-index model (ETIM), the MB of Laohugou Glacier No. 12 (LHG12) was reconstructed from 1980 to 2020, driven by a calibr...
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MDPI AG
2022-10-01
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| Online Access: | https://www.mdpi.com/2072-4292/14/21/5424 |
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| author | Jiake Wu Weijun Sun Baojuan Huai Minghu Ding Lei Wang Yuzhe Wang Junlong Zhang Wentao Du Jizu Chen Xiang Qin |
| author_facet | Jiake Wu Weijun Sun Baojuan Huai Minghu Ding Lei Wang Yuzhe Wang Junlong Zhang Wentao Du Jizu Chen Xiang Qin |
| author_sort | Jiake Wu |
| collection | DOAJ |
| description | A long-series mass balance (MB) of glaciers can be used to study glacier–climate relationships. Using a distributed simplified energy balance model (SEBM) and an enhanced temperature-index model (ETIM), the MB of Laohugou Glacier No. 12 (LHG12) was reconstructed from 1980 to 2020, driven by a calibrated ERA5 reanalysis dataset. The simulation of SEBM performs better than that of ETIM. The results showed that the annual MB of LGH12 is a fluctuating trend of declining from 1980 to 2020, with annual means of −0.39 ± 0.28 m w.e. a<sup>−1</sup> and cumulative value of −16 ± 4 m w.e. During 1980–1990, the annual MB fluctuated in a small range, while after 1990, LHG12 accelerated melting owing to rising air temperature, with annual means of −0.48 m w.e. a<sup>−1</sup>, three times as large as that of 1980–1990. The largest mass loss occurred during 2001–2010 at an average rate of −0.57 m w.e. a<sup>−1</sup>. The average equilibrium line altitude (ELA) was 4976 m a.s.l., and since 1980, the ELA has been increasing at a rate of 37.5 m/10 a. LHG12 is most sensitive to air temperature, and the MB sensitivity reaches −0.51 m w.e. a<sup>−1</sup> with air temperature increase of 1 °C. The sensitivity of MB to incoming shortwave radiation (+10%) simulated by SEBM is −0.30 m w.e. a<sup>−1</sup>, three times larger than that simulated by ETIM. This is mainly because the two models have different conditions for controlling melting. Melting is controlled only by air temperature for ETIM, while for SEBM, it is controlled by air temperature and incoming shortwave radiation. |
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| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T18:42:07Z |
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| spelling | doaj.art-7cda696669204b2da076bdf7bbc15faa2023-11-24T06:38:47ZengMDPI AGRemote Sensing2072-42922022-10-011421542410.3390/rs14215424Mass Balance Reconstruction for Laohugou Glacier No. 12 from 1980 to 2020, Western Qilian Mountains, ChinaJiake Wu0Weijun Sun1Baojuan Huai2Minghu Ding3Lei Wang4Yuzhe Wang5Junlong Zhang6Wentao Du7Jizu Chen8Xiang Qin9College of Geography and Environment, Shandong Normal University, Jinan 250014, ChinaCollege of Geography and Environment, Shandong Normal University, Jinan 250014, ChinaCollege of Geography and Environment, Shandong Normal University, Jinan 250014, ChinaInstitute of Global Change and Polar Research, Chinese Academy of Meteorological Sciences, Beijing 100081, ChinaCollege of Geography and Environment, Shandong Normal University, Jinan 250014, ChinaCollege of Geography and Environment, Shandong Normal University, Jinan 250014, ChinaCollege of Geography and Environment, Shandong Normal University, Jinan 250014, ChinaQilian Shan Station of Glaciology and Eco-Environment, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaQilian Shan Station of Glaciology and Eco-Environment, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaQilian Shan Station of Glaciology and Eco-Environment, State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaA long-series mass balance (MB) of glaciers can be used to study glacier–climate relationships. Using a distributed simplified energy balance model (SEBM) and an enhanced temperature-index model (ETIM), the MB of Laohugou Glacier No. 12 (LHG12) was reconstructed from 1980 to 2020, driven by a calibrated ERA5 reanalysis dataset. The simulation of SEBM performs better than that of ETIM. The results showed that the annual MB of LGH12 is a fluctuating trend of declining from 1980 to 2020, with annual means of −0.39 ± 0.28 m w.e. a<sup>−1</sup> and cumulative value of −16 ± 4 m w.e. During 1980–1990, the annual MB fluctuated in a small range, while after 1990, LHG12 accelerated melting owing to rising air temperature, with annual means of −0.48 m w.e. a<sup>−1</sup>, three times as large as that of 1980–1990. The largest mass loss occurred during 2001–2010 at an average rate of −0.57 m w.e. a<sup>−1</sup>. The average equilibrium line altitude (ELA) was 4976 m a.s.l., and since 1980, the ELA has been increasing at a rate of 37.5 m/10 a. LHG12 is most sensitive to air temperature, and the MB sensitivity reaches −0.51 m w.e. a<sup>−1</sup> with air temperature increase of 1 °C. The sensitivity of MB to incoming shortwave radiation (+10%) simulated by SEBM is −0.30 m w.e. a<sup>−1</sup>, three times larger than that simulated by ETIM. This is mainly because the two models have different conditions for controlling melting. Melting is controlled only by air temperature for ETIM, while for SEBM, it is controlled by air temperature and incoming shortwave radiation.https://www.mdpi.com/2072-4292/14/21/5424mass balance reconstructionLaohugou Glacier No. 12glacier modelsclimate change |
| spellingShingle | Jiake Wu Weijun Sun Baojuan Huai Minghu Ding Lei Wang Yuzhe Wang Junlong Zhang Wentao Du Jizu Chen Xiang Qin Mass Balance Reconstruction for Laohugou Glacier No. 12 from 1980 to 2020, Western Qilian Mountains, China Remote Sensing mass balance reconstruction Laohugou Glacier No. 12 glacier models climate change |
| title | Mass Balance Reconstruction for Laohugou Glacier No. 12 from 1980 to 2020, Western Qilian Mountains, China |
| title_full | Mass Balance Reconstruction for Laohugou Glacier No. 12 from 1980 to 2020, Western Qilian Mountains, China |
| title_fullStr | Mass Balance Reconstruction for Laohugou Glacier No. 12 from 1980 to 2020, Western Qilian Mountains, China |
| title_full_unstemmed | Mass Balance Reconstruction for Laohugou Glacier No. 12 from 1980 to 2020, Western Qilian Mountains, China |
| title_short | Mass Balance Reconstruction for Laohugou Glacier No. 12 from 1980 to 2020, Western Qilian Mountains, China |
| title_sort | mass balance reconstruction for laohugou glacier no 12 from 1980 to 2020 western qilian mountains china |
| topic | mass balance reconstruction Laohugou Glacier No. 12 glacier models climate change |
| url | https://www.mdpi.com/2072-4292/14/21/5424 |
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