Collaborative Research: High Resolution Records of Holocene Climate Change, Drought Variability and Monsoon Behavior from the Uinta Mountains of Utah

该奖项资助开发过去10，000年来数百年干旱事件的记录，这些记录来自犹他州尤因塔山（UM）湖泊沉积物中保存的水文条件和环境温度的化石生物和地球化学指标。 这些记录可以增加科学界的气候强迫机制的理解，导致干旱的UM通过检查与北大西洋海面温度变化的联系，在全新世早期至中期，由于向北迁移的季风。 研究人员已经从几个海拔1,000米的湖泊收集了表层沉积物和环境数据，这些湖泊跨越了目前夏季季风降水量显著的北方界限。 硅藻和摇蚊推断模型的温度，比电导率和深度将开发从这些和其他网站。 湖泊沉积物纤维素的同位素分析将提供关于降水来源的信息。 该研究旨在从一个人口稠密的易受干旱影响的地区开发古气候数据和时间序列。 这些信息将是有价值的古气候研究人员和水资源规划者的广泛范围，因为他们努力了解自然气候变化及其对犹他州和其他地区的上科罗拉多河流域的环境影响。

This award funds the development of records of multi-centennial drought events over the past 10,000 years from fossil biotic and geochemical indicators of hydrological conditions and environmental temperatures preserved in Uinta Mountain (UM), Utah lake sediments. These records could increase the science community's understanding of climate-forcing mechanisms causing droughts in the UM by examining links with North Atlantic sea surface temperature variations during the early to mid-Holocene due to northward displacement of the monsoon. The researchers have already collected surface sediments and environmental data from several lakes spanning 1,000 meters of elevation across the current northern limits of significant summer monsoonal precipitation. Diatom and chironomid-inference models for temperature, specific conductivity, and depth will be developed from these and other sites. Isotopic analysis of lake sediment cellulose will provide information on the source of precipitation. The research aims to develop paleoclimate data and time series from a region susceptible to drought that is becoming densely populated. This information will be of value to a broad spectrum of paleoclimate researchers and water resource planners as they struggle to understand natural climate variability and its environmental impact in Utah and other parts of the Upper Colorado River Basin.