Glacier mass variation and its effect on surface runoff in the Beida River catchment during 1957–2013
Using in-situ measured data from Qiyi Glacier, in combination with meteorological and run-off data from stations, a distributed degree-day model was developed for 631 investigated glaciers in the Beida River catchment to explore glacier mass change and its effect on streamflow. The results showed th...
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2017-06-01
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| Series: | Journal of Glaciology |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S0022143017000132/type/journal_article |
| _version_ | 1811155897371590656 |
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| author | SHENG WANG TANDONG YAO LIDE TIAN JIANCHEN PU |
| author_facet | SHENG WANG TANDONG YAO LIDE TIAN JIANCHEN PU |
| author_sort | SHENG WANG |
| collection | DOAJ |
| description | Using in-situ measured data from Qiyi Glacier, in combination with meteorological and run-off data from stations, a distributed degree-day model was developed for 631 investigated glaciers in the Beida River catchment to explore glacier mass change and its effect on streamflow. The results showed that the average mass balance was −272 ± 67 mm w.e. a−1, with an ice loss of 3.99 Gt during 1957–2013. Assuming a continuous linear trend, equilibrium line altitude rose by 242 m. Compared with morpho-topographic variables, climatic control is a more important factor affecting glacier change. Mass-balance sensitivity to air temperature was −239 mm w.e.°C−1 a−1, while to precipitation it was +1.1 mm w.e. mm−1 a−1. That is, a 210 mm increase in precipitation would be needed to compensate for the net mass loss induced by an air temperature increase of 1°C. Average annual glacier meltwater runoff was 1.51 × 108 m3 from 1957 to 2013, accounting for 15.2% of surface runoff. The time series of meltwater runoff changed abruptly in 2000, and its contribution to surface runoff increased from 13.9 to 20.4%. |
| first_indexed | 2024-04-10T04:42:25Z |
| format | Article |
| id | doaj.art-f2f3935e1ca743019e94b4a85a7b2155 |
| institution | Directory Open Access Journal |
| issn | 0022-1430 1727-5652 |
| language | English |
| last_indexed | 2024-04-10T04:42:25Z |
| publishDate | 2017-06-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Journal of Glaciology |
| spelling | doaj.art-f2f3935e1ca743019e94b4a85a7b21552023-03-09T12:40:23ZengCambridge University PressJournal of Glaciology0022-14301727-56522017-06-016352353410.1017/jog.2017.13Glacier mass variation and its effect on surface runoff in the Beida River catchment during 1957–2013SHENG WANG0TANDONG YAO1LIDE TIAN2JIANCHEN PU3Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China University of Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, ChinaState Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-environment and Resources, Chinese Academy of Sciences, Lanzhou, ChinaUsing in-situ measured data from Qiyi Glacier, in combination with meteorological and run-off data from stations, a distributed degree-day model was developed for 631 investigated glaciers in the Beida River catchment to explore glacier mass change and its effect on streamflow. The results showed that the average mass balance was −272 ± 67 mm w.e. a−1, with an ice loss of 3.99 Gt during 1957–2013. Assuming a continuous linear trend, equilibrium line altitude rose by 242 m. Compared with morpho-topographic variables, climatic control is a more important factor affecting glacier change. Mass-balance sensitivity to air temperature was −239 mm w.e.°C−1 a−1, while to precipitation it was +1.1 mm w.e. mm−1 a−1. That is, a 210 mm increase in precipitation would be needed to compensate for the net mass loss induced by an air temperature increase of 1°C. Average annual glacier meltwater runoff was 1.51 × 108 m3 from 1957 to 2013, accounting for 15.2% of surface runoff. The time series of meltwater runoff changed abruptly in 2000, and its contribution to surface runoff increased from 13.9 to 20.4%.https://www.cambridge.org/core/product/identifier/S0022143017000132/type/journal_articleclimate changeglacier hydrologyglacier mass balanceglacier modelling |
| spellingShingle | SHENG WANG TANDONG YAO LIDE TIAN JIANCHEN PU Glacier mass variation and its effect on surface runoff in the Beida River catchment during 1957–2013 Journal of Glaciology climate change glacier hydrology glacier mass balance glacier modelling |
| title | Glacier mass variation and its effect on surface runoff in the Beida River catchment during 1957–2013 |
| title_full | Glacier mass variation and its effect on surface runoff in the Beida River catchment during 1957–2013 |
| title_fullStr | Glacier mass variation and its effect on surface runoff in the Beida River catchment during 1957–2013 |
| title_full_unstemmed | Glacier mass variation and its effect on surface runoff in the Beida River catchment during 1957–2013 |
| title_short | Glacier mass variation and its effect on surface runoff in the Beida River catchment during 1957–2013 |
| title_sort | glacier mass variation and its effect on surface runoff in the beida river catchment during 1957 2013 |
| topic | climate change glacier hydrology glacier mass balance glacier modelling |
| url | https://www.cambridge.org/core/product/identifier/S0022143017000132/type/journal_article |
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