Modeling the variation trends of glacier systems
The basic principles and methods for a functional glacier systems model are introduced and applied for glaciers of Northwest China. When running the model we assume that a glacier system is under steady state conditions in the initial year. The median size of a glacier system is used as representati...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | Russian |
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Nauka
2015-04-01
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| Series: | Лëд и снег |
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| Online Access: | https://ice-snow.igras.ru/jour/article/view/127 |
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| _version_ | 1850025601952382976 |
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| author | Z. Xie X. Wang Q. Li S. Liao Y. Dai |
| author_facet | Z. Xie X. Wang Q. Li S. Liao Y. Dai |
| author_sort | Z. Xie |
| collection | DOAJ |
| description | The basic principles and methods for a functional glacier systems model are introduced and applied for glaciers of Northwest China. When running the model we assume that a glacier system is under steady state conditions in the initial year. The median size of a glacier system is used as representative for the system. The curve of glacier area distribution against elevation is used to compute the increase in equilibrium line altitude (ELA), and the annual glacier ablation is calculated using a global formula a = 1.33(9.66 + ts)².⁸⁵ [4, p. 96]. The net mass balance near the ELA under steady state conditions represents the net mass balance of the whole glacier system, and the time required for glacier runoff to return to the initial year level is calculated according to the law of glacier runoff variation, and used to calculate the variation of glacier area. The variation of glacier runoff is modeled according to ablation at the ELA, and the variation of glacier volume is modeled according to the absolute value of the mass balance. The observed changes in surveyed glaciers in China over recent decades were broadly consistent with predictions of the glacier system model. The model therefore offers a reliable method for the prediction of changes in glacier systems in response to changing climate. |
| format | Article |
| id | doaj-art-d49cbb13db4b4e95910cb0edf3f72955 |
| institution | DOAJ |
| issn | 2076-6734 2412-3765 |
| language | Russian |
| publishDate | 2015-04-01 |
| publisher | Nauka |
| record_format | Article |
| series | Лëд и снег |
| spelling | doaj-art-d49cbb13db4b4e95910cb0edf3f729552025-08-20T03:00:46ZrusNaukaЛëд и снег2076-67342412-37652015-04-01534132210.15356/2076-6734-2013-4-13-22121Modeling the variation trends of glacier systemsZ. Xie0X. Wang1Q. Li2S. Liao3Y. Dai4College of Resources and Environment, Hunan Normal University, Changsha 410081, China;Department of Geography, Hunan University of Science & Technology, Xiangtan 411201, China;Hunan Meteorological Observatory, Changsha, Hunan Province 410118, ChinaCollege of Resources and Environment, Hunan Normal University, Changsha 410081, China;College of Resources and Environment, Hunan Normal University, Changsha 410081, China;The basic principles and methods for a functional glacier systems model are introduced and applied for glaciers of Northwest China. When running the model we assume that a glacier system is under steady state conditions in the initial year. The median size of a glacier system is used as representative for the system. The curve of glacier area distribution against elevation is used to compute the increase in equilibrium line altitude (ELA), and the annual glacier ablation is calculated using a global formula a = 1.33(9.66 + ts)².⁸⁵ [4, p. 96]. The net mass balance near the ELA under steady state conditions represents the net mass balance of the whole glacier system, and the time required for glacier runoff to return to the initial year level is calculated according to the law of glacier runoff variation, and used to calculate the variation of glacier area. The variation of glacier runoff is modeled according to ablation at the ELA, and the variation of glacier volume is modeled according to the absolute value of the mass balance. The observed changes in surveyed glaciers in China over recent decades were broadly consistent with predictions of the glacier system model. The model therefore offers a reliable method for the prediction of changes in glacier systems in response to changing climate.https://ice-snow.igras.ru/jour/article/view/127climate warmingfunctional modelglacier systemvariation trend |
| spellingShingle | Z. Xie X. Wang Q. Li S. Liao Y. Dai Modeling the variation trends of glacier systems Лëд и снег climate warming functional model glacier system variation trend |
| title | Modeling the variation trends of glacier systems |
| title_full | Modeling the variation trends of glacier systems |
| title_fullStr | Modeling the variation trends of glacier systems |
| title_full_unstemmed | Modeling the variation trends of glacier systems |
| title_short | Modeling the variation trends of glacier systems |
| title_sort | modeling the variation trends of glacier systems |
| topic | climate warming functional model glacier system variation trend |
| url | https://ice-snow.igras.ru/jour/article/view/127 |
| work_keys_str_mv | AT zxie modelingthevariationtrendsofglaciersystems AT xwang modelingthevariationtrendsofglaciersystems AT qli modelingthevariationtrendsofglaciersystems AT sliao modelingthevariationtrendsofglaciersystems AT ydai modelingthevariationtrendsofglaciersystems |