Tropical Glaciers and Climate

热带冰川和气候

• 批准号: 9016657
• 负责人: Stefan Hastenrath
• 金额: $ 10.69万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-02-01 至 1994-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9016657&HistoricalAwards=false
• 关键词: Tropical; Glaciers; Climate

This project is concerned with the response of topical glaciers to climatic forcing and comprises evaluation of satellite data, analysis of glaciological mappings and measurement, modelling and prediction. It is focused on a few regional targets in accordance with suitable information. A "topical satellite glaciology" may become a reality thanks to the fine spatial resolution of SPOT. Mount Kenya is an obvious early target of opportunity because here a calibration is possible with our 1:5,000 map of the ice status in September 1987. For Kilimanjaro satellite sensing shall be used to assess cryosphere changes since the early 1970's. The forcing of the observed ice recession by direct solar radiation and greenhouse effects is to be studied for these two glaciated mountains in East Africa, where the changing ice extent can be documented for various epochs over the past century and where the topography is well resolved by maps at appropriate scales. Modelling of a causality chain involving the ice dynamics is intended for the only two tropical glaciers with a suitable documentation of field observations. For the Lewis Glacier on Mount Kenya, field observations shall be evaluated to verify modelling-based predictions and to ascertain effects of climatic change. For the Yanamarey Glacier in Peru's Cordillera Blanca, field observations and modelling are to be combined to predict future developments, as well as to reconstruct the past net balance conditions and the climatic forcing responsible for the ice retreat over the past century. In conjunction with similar earlier studies for New Guinea and East Africa, this would indicate the diversity in the beginning of the ice recession across the global tropics.

这个项目关注的是局部冰川的反应 包括对卫星数据的评估， 分析冰川学测绘和测量、建模和 预测. 它的重点是几个区域目标， 根据适当的信息。 一颗“专题卫星 冰川学”可能成为现实，这要归功于良好的空间 SPOT的分辨率。 肯尼亚山是一个明显的早期目标 机会，因为这里的校准是可能的， 1987年9月1：5，000的冰况图。 为了基利曼哈罗 应使用卫星传感来评估冰冻圈的变化 自20世纪70年代初以来。 观测到的冰的作用力 直接太阳辐射和温室效应造成的衰退， 东非的这两座冰川山脉 在那里，可以记录各种冰的变化范围， 在过去的世纪， 用适当比例尺的地图来分辨。 因果关系建模 涉及冰动力学的链仅用于两个 热带冰川与适当的文件领域 意见。 对于肯尼亚山上的刘易斯冰川， 应评估观察结果，以验证基于模型的 预测并确定气候变化的影响。 为 秘鲁的科迪勒拉布兰卡山脉的亚纳马雷冰川，实地观测 和建模相结合来预测未来的发展， 以及重建过去的净平衡状况和 过去造成冰退缩的气候作用力 世纪。 与以前的类似研究相结合， 几内亚和东非，这将表明 全球热带地区冰衰退的开始。