GEOS-Chem output for \"Lightning NOx Emissions: Reconciling measured and modeled emissions estimates with updated NOx chemistry\"

These GEOS-Chem simulations examine the effect of recent advances to our understanding of upper tropospheric chemistry on our ability to constrain lightning NOx emissions. These simulations examine the effect of the addition of methyl peroxy nitrate chemistry, as well as better constraints on the formation of pernitric acid, dinitrogen pentoxide, and nitric acid at the temperatures and pressures of the upper troposphere. These simulations include a base case, simulations implementing each change individually, all four together, and all four with a 33% increase in lightning NOx emissions. The outputs contained here are NO2 worldwide for all 2012, averaged at the overpass time of the Ozone Monitoring Instrument, and NO, NO2, HNO3, and O3 over North America during May and June 2012, averaged between 1600-2000 local time, coincident with the flight times of the Deep Convective Clouds and Chemistry field campaign.

本GEOS-Chem模拟试验旨在探究当前对对流层上层化学的认知进展，对我们约束闪电氮氧化物（NOx）排放能力的影响。这些模拟试验还评估了两项关键改动的效应：一是新增过氧甲基硝酸酯（methyl peroxy nitrate）化学机制，二是针对对流层上层温压条件下过硝酸（pernitric acid）、五氧化二氮（dinitrogen pentoxide）与硝酸（nitric acid）的生成过程引入更精准的约束方案。本次模拟试验包含1组基准情景、分别引入单一项改动的单变量情景、四项改动全部启用的综合情景，以及四项改动全部启用且闪电氮氧化物排放提升33%的情景。本数据集包含的输出结果包括：2012年全年全球范围的二氧化氮（NO2）浓度数据，该数据以臭氧监测仪（Ozone Monitoring Instrument）的过境时刻为平均基准；以及2012年5至6月北美区域的一氧化氮（NO）、二氧化氮（NO2）、硝酸（HNO3）与臭氧（O3）浓度数据，该数据以当地时间16:00至20:00为平均区间，且与深对流云与化学（Deep Convective Clouds and Chemistry）外场试验的飞行时段相匹配。