Lake Ice Modelling and the Paleoenvironment of the Eastern Canadian Arctic over the Last 21 ka: A P.A.L.E./LAII/S.I.M.S

摘要OPP-9614667科罗拉多安德鲁斯大学这个项目是由科罗拉多大学的安德鲁斯和他的同事以及科罗拉多州立大学的皮尔克和同事们共同完成的。它的目的是研究湖泊冰在北极气候/环境系统中的作用。加拿大北极东部湖冰复盖的持续时间和厚度被认为是沉积物积累速度和初级生产力的关键组成部分。该项目的工作将把目前关于年度湖泊循环的形成和范围的建模工作联系起来，这是一个遥感组成部分，将绘制出湖泊冰在今天的地貌上的时间和空间变异性，以及一个基于GISP2、Genesis建模的数据和私营部门以前积累的湖泊记录的古组成部分。PIS计划使用巴芬岛上气象站的今天气候数据来预测极端年份和平均条件下的湖冰历史。这些估计将与卫星图像绘制的湖泊冰消失和增长模式图的结果进行比较。最后一个要素将是使用湖冰模型来生成一系列湖冰历史，给出各种古视角的输入。

Abstract OPP-9614667 ANDREWS UNIVERSITY OF COLORADO This project is a joint project between Andrews and colleagues at the University of Colorado and Pielke and colleagues at Colorado State University. It is designed to examine the role of lake ice in the arctic climate/environmental system. The duration and thickness of lake ice cover in the Eastern Canadian Arctic is thought to be a critical component in the rates of sediment accumulation and primary productivity. The work of this project will link current modeling efforts on the formation and extent of the annual lake cycle, a remote sensing component which will map out the temporal and spatial variability of lake ice on today's landscape, and a paleo component based on data from GISP2, Genesis modeling, and lake records accumulated previously by the PIs. The PIs plan to use present-day climate data from stations on Baffin Island to forecast lake ice histories for extreme years and for average conditions. These estimates will be compared with the results of mapping the pattern of lake ice disappearance and growth from satellite imagery. The final element will be to use the lake ice model to generate a series of histories of lake ice given input from a variety of paleo perspectives.