Collaborative Research: Developing and Testing Radiation-Transfer Models for Snow-Pack Photochemistry during the ALERT2000 Field Campaign

这项与阿拉斯加大学费尔班克斯的威廉·辛普森合作的研究项目将开发和测试雪光化学的辐射转移模型。 该模型将有助于量化雪中痕量化合物的光化学处理程度，并将有助于解释冰芯气候记录和了解积雪地区的大气化学。 该项目包括一个基于实验室的实验计划，以量化吸收光谱和量子产率。 将在一个新的雪光分解室中对溴仿的光分解率进行实验测量，溴仿是北极边界层臭氧消耗的一种拟议机制中“活性溴”的可能前体，也是雪间隙空间中的其他痕量化合物。

This collaborative research project with William Simpson, University of Alaska, Fairbanks, will develop and test a radiation-transfer model for snow photochemistry. The model will help quantify the extent of photochemical processing of trace compounds within snow and will help in interpreting ice core climate records and understanding atmospheric chemistry in snow-covered regions. The project includes a laboratory-based program of experiments to quantify absorption spectra and quantum yields. Experimental measurements of photolysis rates for bromoform, a possible precursor of "active bromine" in a proposed mechanism of Arctic boundary-layer ozone depletion, and other trace compounds in snow interstitial spaces will be made in a novel snow photolysis chamber.