Comparison of Airborne Reactive Nitrogen Measurements During WINTER
Comparison of Airborne Reactive Nitrogen Measurements During WINTER
复制标题
冬季空气中活性氮测量的比较
DOI：
10.1029/2019jd030700
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Montzka, Denise D.
中科院分区：
文献类型：
--
作者：
Sparks, Tamara L.;Ebben, Carlena J.;Wooldridge, Paul J.;Lopez‐Hilfiker, Felipe D.;Lee, Ben H.;Thornton, Joel A.;McDuffie, Erin E.;Fibiger, Dorothy L.;Brown, Steven S.;Montzka, Denise D.
我们提出了在2015年冬季运输，排放和反应性（WINTER）活动期间测量飞机氮氧化物物种的仪器的比较。这里比较的仪器技术包括化学发光（CL）、热解离激光诱导荧光（TD-LIF）、腔衰荡光谱（CRDS）、高分辨率飞行时间、碘加合物化学电离质谱（I-CIMS）和气溶胶质谱。调查的物种包括NO2，NO，总氮氧化物（NOy），N2 O 5，ClNO 2和HNO 3。还包括颗粒相硝酸盐，用于比较HNO 3和NOy。仪器通常在报告的不确定性范围内一致，由于航班间斜率的变化，个别航班有时比整体数据集显示出更好的一致性。CRDS和CL测量的NO在所有飞行中的平均相对斜率为1.16 ± 0.01，这超出了组合不确定性。未确定错误的来源。对于CRDS和TD-LIF测量的NO2，平均值为1.02 ± 0.00;对于CRDS和CL测量的NO2，平均值为1.01 ± 0.00;对于CRDS和I-CIMS测量的N2 O 5，平均值为0.89 ± 0.01。NOybudget关闭到20%以内的证明。我们观察到NO2和NOy相关性在浓度高于~30 ppbv时的非线性，这可能与上述NO差异有关。对于ClNO 2，I-CIMS和TD-LIF之间存在显著差异，可能部分归因于用于热解离的温度。虽然TD-LIF测量的颗粒硝酸盐分数没有得到很好的表征，但它改进了比较，包括颗粒测量。
We present a comparison of instruments measuring nitrogen oxide species from an aircraft during the 2015 Wintertime INvestigation of Transport, Emissions, and Reactivity (WINTER) campaign over the northeast United States. Instrument techniques compared here include chemiluminescence (CL), thermal dissociation laser‐induced fluorescence (TD‐LIF), cavity ring‐down spectroscopy (CRDS), high‐resolution time of flight, iodide‐adduct chemical ionization mass spectrometry (I‐CIMS), and aerosol mass spectrometry. Species investigated include NO2, NO, total nitrogen oxides (NOy), N2O5, ClNO2, and HNO3. Particulate‐phase nitrate is also included for comparisons of HNO3and NOy. Instruments generally agreed within reported uncertainties, with individual flights sometimes showing much better agreement than the data set taken as a whole, due to flight‐to‐flight slope changes. NO measured by CRDS and CL showed an average relative slope of 1.16 ± 0.01 across all flights, which is outside of combined uncertainties. The source of the error was not identified. For NO2measured by CRDS and TD‐LIF the average was 1.02 ± 0.00; for NOymeasured by CRDS and CL the average was 1.01 ± 0.00; and for N2O5measured by CRDS and I‐CIMS the average was 0.89 ± 0.01. NOybudget closure to within 20% is demonstrated. We observe nonlinearity in NO2and NOycorrelations at concentrations above ~30 ppbv that may be related to the NO discrepancy noted above. For ClNO2there were significant differences between I‐CIMS and TD‐LIF, potentially due in part to the temperature used for thermal dissociation. Although the fraction of particulate nitrate measured by the TD‐LIF is not well characterized, it improves comparisons to include particulate measurements.
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影响因子：
6.3
作者：
L. Lee;P. Wooldridge;J. Gilman;C. Warneke;J. Gouw;R. Cohen
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影响因子：
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作者：
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影响因子：
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作者：
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影响因子：
2
作者：
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影响因子：
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作者：
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通讯作者：
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