Hydroxy Fatty Acids in Remote Marine Aerosols over the Pacific Ocean: Impact of Biological Activity and Wind Speed
Hydroxy Fatty Acids in Remote Marine Aerosols over the Pacific Ocean: Impact of Biological Activity and Wind Speed
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DOI：
10.1021/acsearthspacechem.8b00161
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发表时间：
2019-03-01
影响因子：
3.4
通讯作者：
Suzuki, Keisuke
中科院分区：
文献类型：
--
作者：
Bikkin, Poonam;Kawamura, Kimitaka;Suzuki, Keisuke
由于对有机气溶胶成分的了解有限，目前气候模式中新生海雾气溶胶（SSA）的云-气溶胶相互作用的参数化受到阻碍。我们在这里调查的质量浓度，分子分布，和相对丰度的羟基脂肪酸（FA），无处不在的脂质化合物在SSA收集在西太平洋（35度N40度S）。甲磺酸（二甲基硫醚的氧化产物）和高富集系数的Mg 2+和Ca 2+相对于Na+的可检测水平强调海洋生物活性对SSA的有机部分的影响。β-羟基脂肪酸在短链同系物中具有特征性的“奇-C”优势（C-9 > C-10和C-11 > C-12）的分子分布（
Current parametrization of cloudaerosol interactions of nascent sea-spray aerosols (SSA) in the climate models is hampered by our limited understanding of the constituents of organic aerosols. We investigated here the mass concentrations, molecular distributions, and relative abundances of hydroxy fatty acids (FAs), ubiquitous lipid compounds in the SSA collected over the western Pacific Ocean (35 degrees N40 degrees S). Detectable levels of methanesulfonic acid (an oxidation product of dimethyl sulfide) and high enrichment factors of Mg2+ and Ca2+ relative to Na+ emphasize the impact of the marine biological activity on the organic fraction of SSA. The molecular distributions of beta-hydroxy FAs with characteristic "odd-C" predominance (C-9 > C-10 and C-11 > C-12) among short-chain homologues (