Collaborative Research: P2C2--Ultra-High-Resolution Investigation of High Andean Snow and Ice Chemistry to Improve Paleoclimatic Reconstruction and Enhance Climate Prediction

这一合作提案旨在将联合收割机冰芯取样技术的进步、安第斯风暴事件气象学知识、网络基础设施以及气候建模和分析与从秘鲁和玻利维亚冰帽获取的新雪、雪坑和冰芯数据结合起来。（如厄尔尼诺/拉尼娜（ENSO）、南美低空急流、南半球信风和西风带）、热带-中纬度-极地遥相关以及控制大气环流的关键全球尺度强迫函数的重要性（如太阳变化，火山活动，灰尘和温室气体），并有显着的相关性，水分和热量输送在南美洲。高山冰川的区域退缩加上人口，工业，农业活动正在产生对水资源的未来需求。水资源的减少可能扩大厄尔尼诺/南方涛动的区域影响。 该地区气候和环境变化的仪器记录很少，但安第斯山脉中部冰川的冰芯提供了过去气候动态和大气化学的高分辨率记录，可追溯到几个世纪到几千年。 冰芯气候重建可以为现有的多代理重建提供额外的时间和空间背景，以评估自然和人为引起的物理和化学气候变化在影响日常和季节事件的风暴尺度上的影响，并在此过程中，开发预测未来变化的类似物。凯克基金会和国家科学基金会支持的变革性冰芯激光采样以及新发布的、国家科学基金会支持的网络基础设施和气候分析工具。 它还涉及支持早期职业博士后学者，开发和测试新的分析工具，以及与南美科学家的密切合作。

This collaborative proposal aims to combine advances in ice core sampling technology, knowledge of Andean storm event meteorology, cyberinfrastructure, and climate modeling and analysis to fresh snow, snowpits and ice core data to be recovered from ice caps in Peru and Bolivia.The specific goals of the project are to investigate South American atmospheric circulation features (e.g. El Niño/La Niña (ENSO), South American Low-level Jet, Southern Hemisphere trades and westerlies), tropical-mid-latitude-polar teleconnections, and the significance of key global-scale forcing functions that control atmospheric circulation (e.g. solar variability, volcanic activity, dusts, and greenhouse gases) and have significant relevance to moisture and heat transport over South America.The regional retreat of alpine glaciers coupled with increased population, industry, and agriculture activities are generating future demands on water resources. Declines in water resources may magnify the regional impacts of ENSO. Instrumental records of climate and environmental variability over the region are sparse yet ice cores from Central Andean glaciers provide a source of high resolution records of past climate dynamics and chemistry of the atmosphere extending back centuries to millennia. Climate reconstructions from ice cores could provide added temporal and spatial context to existing multi-proxy reconstructions in order to assess the impact of natural and human-induced physical and chemical climate change at the storm-scales that impact day to day and season to season events, and in the process, develop analogs for predicting future change.This project builds on the researchers' recent W.M. Keck Foundation and NSF-supported transformative laser sampling of ice cores and the newly released, NSF-supported cyberinfrastructure and climate analysis tools. It also involves supporting an early career post-doctoral scholar, development and testing of new analytical tools, and strong collaboration with South American scientists.