A Cooperative Ice Core Paleoclimate Study of Monsoon Variablity as Archived in the Dasuopu Glacier, China

题目：中国大索普冰川季风变率的合作冰芯古气候研究。该奖项支持对喜马拉雅中南部热带大索普冰川冰芯的检索和分析，该地区完全没有常规的长期气候数据。热带地区的记录特别令人感兴趣，因为全球表面的50%位于南纬30度至南纬30度之间，地球上75%的人口居住在这些热带气候的土地上。这些岩心的记录将补充青藏高原东北和西北边缘的敦德和古里雅冰盖的长期历史。新的钻探地点位于Q-T高原的南缘，位于季风系统的空间范围内。季风环流的主导作用在氧同位素比率和可见尘埃沉积方面产生了明显的年循环，从而可以重建气候和环境条件的高分辨率（年度）记录。大索普位于喜马拉雅山以北，年降水量约为300毫米水当量。这个地点的高海拔确保了冰的温度将远低于OoC，因此这个冰川可能是“极地的”，很可能包含一个长期保存完好的记录。最初的实地计划包括地球物理和地表研究的补充，旨在确定该冰川是否适合恢复高分辨率，保存完好的冰芯记录。由于缺乏青藏高原主要地区及其周围高山的数据，中国气候研究一直受到困扰。对以往记录（Dunde和Guliya）的成功检索表明，精心挑选的亚洲冰盖的冰芯是气候和环境历史的优秀档案。这些记录对于填补地球气候史上的一个主要空间空白至关重要。

Abstract ATM-9523237 Thompson, Lonnie G. Ohio State University Title: A Cooperative Ice Core Paleoclimate Study of Monsoon Variability as Archived in the Dasuopu Glacier, China This award supports the retrieval and analysis of ice cores from the tropical Dasuopu glacier located in the south central Himalayas where conventional, long-term climatic data are completely absent. Tropical records are of particular interest as 50% of the global surface lies between 30oN and 30oS and 75% of the Earth's population inhabits these climatically tropical lands. The records from these cores will complement the long histories recovered from Dunde and Guliya ice caps, on the northeastern and northwestern margins of the Qinghai-Tibetan (Q-T) Plateau. Located on the southern margin of the Q-T Plateau the new drilling site lies well within the spatial extent of the monsoon system. Dominance of monsoonal circulation produces distinctly annual cycles in oxygen isotopic ratios and in the deposition of visible dust which permit the reconstruction of high resolution (annual) records of climatic and environmental conditions. Dasuopu is located just north of the Himalayas with annual precipitation about 300 mm water equivalent (H2O eq.). The high elevation of this site ensures that ice temperatures will be well below OoC, hence this glacier may be "polar: in character and is likely to contain a long, well- preserved record. The initial field program includes a complement of geophysical and surface studies designed to determine the suitability of this glacier for the recovery of high resolution, well-preserved ice core records. Studies of the climate of China are plagued by the absence of data from major sections of the (Q-T) Plateau and the surrounding high mountain ranges. The successful retrieval of previous records (Dunde and Guliya) suggest that ice cores from carefully selected ice caps in Asia are excellent archives for climatic and environmental histories. These records are essential to fill one of the major spatial gaps in the Earth's climate history.