A Study of the High Latitude Nitrogen Oxide Reservoir

春季的北极对流层已经被证明是一个主要的 水库的许多生物衍生的污染物，包括 氮氧化物和烃。 根据现有数据， 据估计，北极对流层含有大约10%的 春季全球对流层NOy的负荷。 此外，本发明还 已知对流层臭氧浓度正在增加， 在高纬度地区，春季和夏季每年约为1-2%。 阿拉斯加博罗的春季NO测量结果表明， 光化学活动和臭氧的产生是可能的， 晚春时期，当NOy和非甲烷碳氢化合物（NMHC） 仍然很高，温度正在变暖，太阳强度 增加。 在本研究中，PI将进一步开发和验证 测量氮的仪器能力 氧化物物种在低环境混合比。 一旦确认，他 将专注于获得更好的理解时间 巴罗春、夏季NO、NO2和NOy的分布 过渡期 这些测量，沿着J（NO2）和O3， 然后可以用来计算O3的生产率， 评估NOy形态的变化作为温度的函数 和太阳强度。

The springtime arctic troposphere has been shown to be a major reservoir of many anthropogenically derived pollutants, including nitrogen oxides and hydrocarbons. Based on the available data, it is estimated that the arctic troposphere contains roughly 10% of the global tropospheric burden of NOy during spring. Additionally, tropospheric ozone concentrations are known to be increasing at about 1-2% per year during spring and summer at high latitudes. The springtime measurements of NO at Borrow, Alaska suggest that photochemical activity and ozone production is possible during the late spring period when NOy and non-methane hydrocarbons (NMHC's) are still high, temperatures are warming, and solar intensity is increasing. In this study, the PI will further develop and validate instrumental capabilities for making measurements of the nitrogen oxide species at low ambient mixing ratios. Once validated, he will focus on gaining an improved understanding of the temporal distribution of NO, NO2 and NOy at Barrow during the spring-summer transition period. These measurements, along with J(NO2) and O3, can then be used to calculate the O3 production rates and to evaluate the change in NOy speciation as a function of temperature and solar intensity.