Dinitrogen pentoxide, NO, is an important nighttime intermediatein the oxidation of NO that is hydrolysed on surfaces. We conducted afield campaign in Fairbanks, Alaska during November 2009 to measure thegradient and derive a flux (and deposition velocity) of NOdepositing to snowpack using the aerodynamic gradient method. The depositionvelocity of NO under Arctic winter conditions was found to be0.59 ± 0.47 cm s, which is the first measurement of this parameter to ourknowledge. Based on the measured deposition velocity, we compared thechemical loss rate of NO via snowpack deposition to the totalsteady state loss rate and found that deposition to snowpack is at least1/8th of the total chemical removal of NO that is locatedwithin the first few meters above the ground surface.
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机译：五氧化二氮（NO）是在表面氧化的NO氧化的重要夜间中间产物。我们于2009年11月在阿拉斯加的费尔班克斯进行了一次野外运动，以测量梯度并使用空气动力学梯度法推算NO沉积到积雪堆中的通量（和沉积速度）。发现北极冬季条件下NO的沉积速度为0.59±0.47 cm s，这是我们首次知道该参数。根据测得的沉积速度，我们将通过积雪堆积的NO的化学损失率与总稳态损失率进行了比较，发现积雪堆积的NO至少占脱除积雪的前几米内NO的总化学去除量的1/8。地面。
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