Chemistry of HONO and HO2NO2 in the Arctic Marine Boundary Laver and Snowpack

北极污染物项目的这个奖项得到了极地项目办公室、化学部和MPS多学科活动办公室的支持。纽约州立大学奥尔巴尼分校的周贤良博士将研究极地日出后，积雪中氮氧化物的光解对北极海洋边界层臭氧消耗的影响。我们将详细研究积雪和非积雪间隙空气中的非均匀过程。将开发一种在寒冷环境中对HONO和HO2NO2进行灵敏测量的技术，并将于2000年2-4月在加拿大西北地区的Alert进行测量。双通道测量装置使用HPLC仪器，因此必须适应影响流量特性的低温。这两种氮氧化物的垂直剖面，从雪面以下100厘米到地面以上几米，将在极地日出之前和之后建立。该项目将为极地日出实验PSE2000做出贡献，该实验旨在研究冻结的海洋表面和积雪对处理大气气体的作用和北极海洋边界层的化学。

This award in the Arctic Contaminants program is supported by the Office ofPolar Programs, the Division of Chemistry, and the MPS Office ofMultidisciplinary Activities. Dr. Xianliang Zhou of the State Universityof New York at Albany will investigate the effect of photolysis of nitrogenoxides in the snowpack on ozone depletion in the Arctic marine boundarylayer after polar sunrise. Heterogeneous processes in the snowpack and insnow interstitial air will be investigated in detail. A sensitivemeasurement technique for HONO and HO2NO2 in cold environments will bedeveloped and used for measurements at Alert, NWT, Canada, inFebruary-April 2000. The 2-channel measurement device utilizes HPLCinstrumentation and so must be adapted for cold temperatures that affectflow characteristics. Vertical profiles of the two nitrogen oxides, from100 cm below the snow surface to a few meters above ground, will beestablished before and after polar sunrise. This project will contributeto PSE2000, the Polar Sunrise Experiment, aimed at investigating the roleof the frozen ocean surface and snowpack on processing atmospheric gasesand the chemistry of the Arctic marine boundary layer.