Effect of wind speed on the size distribution of gel particles in the sea surface microlayer: insights from a wind-wave channel experiment
Sun, CC; Sperling, M; Engel, A; aengel@geomar.de
2018
发表期刊BIOGEOSCIENCES
卷号15期号:11页码:3577-3589
摘要Gel particles, such as transparent exopolymer particles (TEP) and Coomassie stainable particles (CSP), are important organic components in the sea surface microlayer (SML). Here, we present results on the effect of different wind speeds on the accumulation and size distribution of TEP and CSP during a wind wave channel experiment in the Aeolotron. Total areas of TEP (TEPSML) and CSP (CSPSML) in the surface microlayer were exponentially related to wind speed. At wind speeds < 6 m s(-1), accumulation of TEPSML and CSPSML occurred, decreasing at wind speeds of > 8 ms(-1). Wind speeds > 8 m s(-1) also significantly altered the size distribution of TEPSML in the 2-16 mu m size range towards smaller sizes. The response of the CSPSML size distribution to wind speed varied through time depending on the biogenic source of gels. Wind speeds > 8 m s(-1) decreased the slope of CSPSML size distribution significantly in the absence of autotrophic growth. For the slopes of TEP and CSP size distribution in the bulk water, no significant difference was observed between high and low wind speeds. Changes in spectral slopes between high and low wind speed were higher for TEPSML than for CSPSML, indicating that the impact of wind speed on size distribution of gel particles in the SML may be more pronounced for TEP than for CSP, and that CSPSML are less prone to aggregation during the low wind speeds. Addition of an E. huxleyi culture resulted in a higher contribution of submicron gels (0.4-1 mu m) in the SML at higher wind speed (> 6 m s(-1)), indicating that phytoplankton growth may potentially support the emission of submicron gels with sea spray aerosol.
部门归属[Sun, Cui-Ci; Sperling, Martin; Engel, Anja] GEOMAR Helmholtz Ctr Ocean Res Kiel, D-24105 Kiel, Germany; [Sun, Cui-Ci] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Sun, Cui-Ci] Chinese Acad Sci, Daya Bay Marine Biol Res Stn, Shenzhen 518000, Peoples R China
学科领域Environmental Sciences & Ecology ; Geology
资助项目LTO
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/17065
专题热带海洋环境国家重点实验室(LTO)
通讯作者aengel@geomar.de
推荐引用方式
GB/T 7714
Sun, CC,Sperling, M,Engel, A,et al. Effect of wind speed on the size distribution of gel particles in the sea surface microlayer: insights from a wind-wave channel experiment[J]. BIOGEOSCIENCES,2018,15(11):3577-3589.
APA Sun, CC,Sperling, M,Engel, A,&aengel@geomar.de.(2018).Effect of wind speed on the size distribution of gel particles in the sea surface microlayer: insights from a wind-wave channel experiment.BIOGEOSCIENCES,15(11),3577-3589.
MLA Sun, CC,et al."Effect of wind speed on the size distribution of gel particles in the sea surface microlayer: insights from a wind-wave channel experiment".BIOGEOSCIENCES 15.11(2018):3577-3589.
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