The Pacific marine aerosol: Evidence for natural acid sulfates
The Pacific marine aerosol: Evidence for natural acid sulfates
复制标题
太平洋海洋气溶胶：天然酸性硫酸盐的证据
DOI：
10.1029/jd092id04p04179
复制
发表时间：
1987
影响因子：
--
通讯作者：
D. Covert
中科院分区：
文献类型：
--
作者：
A. Clarke;N. Ahlquist;D. Covert
1983年秋和1984年春在中太平洋进行的两次海洋考察中，对海洋边界层气溶胶进行了光学、化学和物理测量。这两次巡航都揭示了一种普遍存在的积累模式大气气溶胶，在夏威夷和塔希提岛之间的赤道上升流区域（4°N至15°S）显示出显著的增加。响应于热调节的气溶胶粒度分布的变化显示了与硫酸和/或硫酸铵/硫酸氢盐的特性一致的特性，这取决于采样位置。的积累模式的表观酸度的变化与采样区域的物理和化学性质的变化，而数浓度表明，它是占主导地位的，可能限制气溶胶云凝结核在遥远的中太平洋。
Optical, chemical, and physical measurements of marine boundary layer aerosol were made during two oceanographic cruises in the central Pacific in the fall of 1983 and spring of 1984. Both cruises revealed a ubiquitous accumulation mode atmospheric aerosol that showed marked increases in the region of equatorial upwelling, 4°N to 15°S, between Hawaii and Tahiti. Changes in the aerosol size distribution in response to thermal conditioning revealed properties consistent with those of sulfuric acid and/or ammonium sulfate/bisulfate depending upon the sampling location. Changes in the apparent acidity of the accumulation mode varied in conjunction with physical and chemical properties of the region sampled, while the number concentration suggests that it is the dominant and possibly limiting aerosol for cloud condensation nuclei in the remote central Pacific.