...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Geosciences >Recent Climatic Mass Balance of the Schiaparelli Glacier at the Monte Sarmiento Massif and Reconstruction of Little Ice Age Climate by Simulating Steady-State Glacier Conditions
【24h】

Recent Climatic Mass Balance of the Schiaparelli Glacier at the Monte Sarmiento Massif and Reconstruction of Little Ice Age Climate by Simulating Steady-State Glacier Conditions

机译：Schiaparelli冰川的最近气候质量平衡在Monte Sarmiento Massif和稳态冰川条件下重建小冰时期气候

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Cordillera Darwin Icefield loses mass at a similar rate as the Northern and Southern Patagonian Icefields, showing contrasting individual glacier responses, particularly between the north-facing and south-facing glaciers, which are subject to changing climate conditions. Detailed investigations of climatic mass balance processes on recent glacier behavior are not available for glaciers of the Cordillera Darwin Icefield and surrounding icefields. We therefore applied the coupled snow and ice energy and mass balance model in Python (COSIPY) to assess recent surface energy and mass balance variability for the Schiaparelli Glacier at the Monte Sarmiento Massif. We further used COSIPY to simulate steady-state glacier conditions during the Little Ice Age using information of moraine systems and glacier areal extent. The model is driven by downscaled 6-hourly atmospheric data and high resolution precipitation fields, obtained by using an analytical orographic precipitation model. Precipitation and air temperature offsets to present-day climate were considered to reconstruct climatic conditions during the Little Ice Age. A glacier-wide mean annual climatic mass balance of ?1.8 ± 0.36 m w.e. a ? 1 was simulated between between April 2000 and March 2017. An air temperature decrease between ?0.9 ° C and ?1.7 ° C in combination with a precipitation offset of up to +60% to recent climate conditions is necessary to simulate steady-state conditions for Schiaparelli Glacier in 1870.
机译：Cordillera Darwin Icefield队以与北部和南部的北部和南塔哥代人的Icefields类似的速度失去了群众，表现出对比的个体冰川响应，特别是朝北和朝南冰川之间，这些冰川均有可能变化气候条件。关于近期冰川行为的气候质量平衡流程的详细调查不适用于Cordillera Darwin Icefield和周围的Icefields的冰川。因此，我们在Python（Cosipy）中应用了耦合的雪和冰能量和质量平衡模型，以评估Monte Sarmiento Massif的Schiaparelli冰川的最近表面能量和质量平衡变化。我们进一步使用Cosipy在小冰河时代使用冰碛系统和冰川区域范围的信息来模拟稳态冰川条件。该模型由较低的6小时大气数据和高分辨率降水场驱动，通过使用分析的地形降水模型获得。将沉淀和空气温度偏移到当今气候中被认为是在小冰河时代重建气候条件。冰川宽的平均年度气候质量平衡？1.8±0.36 m。一种 ？ 1在2000年4月和2017年3月之间模拟了Δ0.9℃和α1.7°C与最近的气候条件的沉淀偏移相结合的空气温度降低，以模拟稳态条件希亚帕雷利冰川于1870年。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号