Ozone in the marine boundary layer over the Pacific and Indian Oceans: Latitudinal gradients and diurnal cycles
Ozone in the marine boundary layer over the Pacific and Indian Oceans: Latitudinal gradients and diurnal cycles
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DOI：
10.1029/jd095id08p11847
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发表时间：
1990-07
影响因子：
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通讯作者：
James E. Johnson;R. Gammon;J. Larsen;T. Bates;S. Oltmans;J. Farmer
中科院分区：
文献类型：
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作者：
James E. Johnson;R. Gammon;J. Larsen;T. Bates;S. Oltmans;J. Farmer
在四个不同的海洋研究航次(1986年7月、1987年5月至8月、1988年4月至5月)上测量了太平洋和印度洋大气边界层中的臭氧浓度。这些测量显示，4-5月赤道中部太平洋的臭氧浓度接近于零(≤为3 ppb)，这一区域的臭氧浓度在接下来的4个月里有所增加。观测到的臭氧纬度梯度的季节性变化与Oltmann和Komhyr[1986]以前在希洛和萨摩亚进行的臭氧测量以及大气一般环流模型研究[Levy等人，1985年]的预测一致。在几乎所有地点都发现了显著的臭氧日循环，最大值在日出附近，最小值在下午晚些时候，峰-峰幅度为1-2 ppb(10-20%)，与低NOx下限的光化学模型预测的结果相似(Thompson和Lenschow，1984)。
Ozone concentrations in the atmospheric boundary layer of the Pacific and Indian Oceans were measured on four separate oceanographic research cruises (July 1986, May to August 1987, April to May 1988). These measurements show a distinct zone of near zero (≤3 ppb) ozone concentration in the central equatorial Pacific in April–May, with ozone increasing in this region over the next 4 months. The seasonal observed change in the latitudinal gradient of ozone is consistent with previous ozone measurements at Hilo and Samoa by Oltmans and Komhyr [1986] and predictions from an atmospheric general circulation model study [Levy et al., 1985]. A significant diurnal cycle of ozone was found in almost all locations with a maximum near sunrise, a minimum in the late afternoon, and a peak-to-peak amplitude of 1 to 2 ppb (10–20%), similar to that predicted by a photochemical model in the low NOx limit [Thompson and Lenschow, 1984].