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

北极海洋边界紫菜和积雪中 HONO 和 HO2NO2 的化学

• 批准号: 9908687
• 负责人: Xianliang Zhou
• 金额: $ 20.8万
• 依托单位: Health Research Incorporated/New York State Department of Health
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-15 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9908687&HistoricalAwards=false
• 关键词: Chemistry; HONO; HO2NO2; Arctic; Marine

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.

北极污染物计划的这一奖项得到了极地计划办公室、化学部和MPS多学科活动办公室的支持。 奥尔巴尼的纽约州立大学的Xianliang Zhou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。 将详细研究积雪和雪中间隙空气的非均匀过程。 将开发一种在寒冷环境中对HONO和HO 2NO 2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阿勒特进行测量。双通道测量装置采用HPLC仪器，因此必须适应影响流量特性的低温。 在极地日出前后，将建立从雪面以下100厘米到地面以上几米的两种氮氧化物的垂直分布。 该项目将为PSE 2000-极地日出实验作出贡献，该实验的目的是调查冰冻海洋表面和积雪对处理大气气体的作用以及北极海洋边界层的化学性质。