Observation of NO2 and Labile NOy During the Tropospheric Ozone Production about the Spring Equinox

该项目涉及部署一台机载双通道仪器，用于检测大气中的NO2和热可利用的NO2物种，包括N2O5、HNO4和过硝酸盐。该仪器是基于激光诱导荧光检测NO2的。这些测量将在NCAR C-130上进行，这是对流层臭氧生产关于春分(TOPSE)计划的一部分。TOPSE计划是一个由多个调查员组成的以飞机为基础的计划，旨在研究北美和北极上空的高纬度对流层春季臭氧最大值。这项研究将深入了解活性氮在不同形态之间的分配及其在春季光化学活动开始期间对流层臭氧的产生和破坏中的作用。该仪器的部署将提供对N2O5的首次现场测量，N2O5是对流层中活性氮的重要储存物种。

This project involves the deployment of an airborne dual-channel instrument for the detection of atmospheric NO2 and thermally available NOy species, including N2O5, HNO4, and peroxynitrates. The instrument is based on the laser-induced-fluorescence detection of NO2. The measurements will be made aboard the NCAR C-130 as part of the Tropospheric Ozone Production about the Spring Equinox (TOPSE) program. The TOPSE program is a multi-investigator, aircraft-based program designed to study the high latitude tropospheric spring ozone maximum over North America and the Arctic. This study will provide insight into the partitioning of reactive nitrogen between various forms and their roles in the production and destruction of tropospheric ozone during the onset of spring photochemical activity. The deployment of this instrument will provide the first in situ measurements of N2O5, which is an important reservoir species for reactive nitrogen in the troposphere.