Comparison of ultraviolet absorbance and NO-chemiluminescence for ozone measurement in wildfire plumes at the Mount Bachelor Observatory
Comparison of ultraviolet absorbance and NO-chemiluminescence for ozone measurement in wildfire plumes at the Mount Bachelor Observatory
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巴赫山天文台野火羽流中臭氧测量的紫外线吸收率和 NO 化学发光法的比较
DOI：
10.1016/j.atmosenv.2017.07.007
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发表时间：
2017
影响因子：
5
通讯作者：
D. Jaffe
中科院分区：
文献类型：
--
作者：
Honglian Gao;D. Jaffe
本文的目的是评估常用的臭氧仪器(紫外线(UV)光度计)与联邦参考方法(一氧化氮-化学发光法)测量野火烟雾中臭氧的准确性。在野火季节(8月1日至9月)，我们使用两个紫外线臭氧光度计和一个一氧化氮化学发光(NO-CL)臭氧探测器进行了同步臭氧测量。30)2015年，在美国俄勒冈州单身山天文台(MBO，平均海平面以上2763米)。UV O_3与NO-CL O_3具有良好的一致性和良好的相关性，1小时平均资料的线性回归斜率接近1，R2=0.92，O_3日最大8小时平均值(MDA8)的R_2=0.93。在这两个月期间，我们确定了35起野火事件。NO-ClO_3和UV_2O_3监测仪测量的野火羽流中的臭氧强化也表现出良好的一致性和良好的线性相关性，对于臭氧强化(ΔO_3)的斜率和R2分别为1.03和0.86，对于一氧化碳(CO)归一化的臭氧强化比(ΔO_3/ΔCO)分别为1.00和0.98。总体而言，与无CL O_3相比，UV_2O_3具有4.7±22.8 ppbv的正偏置。NO-ClO_3和UV_2O_3之间的O_3偏向与CO、颗粒物(PM1)、气溶胶散射和超细颗粒等野火羽流示踪剂无关。结果表明，即使在浓度较高的野火羽流中，紫外-臭氧吸光度法也是可靠的。
The goal of this paper is to evaluate the accuracy of the commonly used ozone (O3) instrument (the ultraviolet (UV) photometer) against a Federal Reference Method (Nitric Oxide –chemiluminescence) for ozone measurement in wildfire smoke plumes. We carried out simultaneous ozone measurement with two UV O3photometers and one nitric oxide–chemiluminescence (NO-CL) ozone detectors during wildfire season (Aug. 1–Sept. 30) in 2015 at the Mount Bachelor Observatory (MBO, 2763 m above mean sea level, Oregon, USA). The UV O3shows good agreement and excellent correlation to NO-CL O3, with linear regression slopes close to unity and R2of 0.92 for 1-h average data and R2of 0.93 for O3daily maximum 8-h average (MDA8). During this two-month period we identified 35 wildfire events. Ozone enhancements in those wildfire plumes measured by NO-CL O3and UV O3monitors also show good agreement and excellent linear correlation, with a slope and R2of 1.03 and 0.86 for O3enhancements (ΔO3) and 1.00 and 0.98 for carbon monoxide (CO)-normalized ozone enhancement ratios (ΔO3/ΔCO), respectively. Overall, the UV O3was found to have a positive bias of 4.7 ± 2.8 ppbv compared to the NO-CL O3. The O3bias between NO-CL O3and UV O3is independent of wildfire plume tracers such as CO, particulate matter (PM1), aerosol scattering, and ultrafine particles. The results demonstrate that the UV O3absorbance method is reliable, even in highly concentrated wildfire plumes.
影响因子：
5.2
作者：
P. Mote;D. Rupp;Sihan Li;D. Sharp;F. Otto;P. Uhe;M. Xiao;D. Lettenmaier;H. Cullen;M. Allen
通讯作者：
P. Mote;D. Rupp;Sihan Li;D. Sharp;F. Otto;P. Uhe;M. Xiao;D. Lettenmaier;H. Cullen;M. Allen