時 間：2014-5-12(星期一) 11:40-13:30（12:20開講）
主 講：Céline Guéguen / Canada / Department of Chemistry, Trent University
地 點：周隆泉樓一樓展廳
近海海洋環境科學國家重點實驗室的5月12日的周一午餐交流會將由蔡毅華老師邀請的高級訪問學者、來自加拿大的Céline Guéguen 博士開講。詳情請見以下：
Title: Optical properties of dissolved organic matter in the Arctic Ocean
（北冰洋溶解有機物的光學性能）
Speaker: Céline Guéguen,
Canada Research Chair in Aquatic Science and Biogeochemistry,
Associate Professor, Department of Chemistry, Trent University
Time: May 12, 2014 (Monday) 11:40-13:30 (the talk will begin at 12:20)
Venue: Multimedia Room, 1st Floor, Zhou Long Quan Bldg (周隆泉樓一樓展廳)
以下是報告摘要：
The optical properties of dissolved organic matter (DOM) were investigated for the first time in the Canadian Arctic Archipelago (CAA), Baffin Bay (BB), and Labrador Sea (LS) as part of the International Polar Year Canada’s Three Oceans project (C3O). The dynamics and composition of absorbing (colored DOM or CDOM) and fluorescing DOM (FDOM) were evaluated in four distinct water masses occupying the three regions: surface waters, Arctic outflow waters, West Greenland Intermediate waters (WGIW) and upper Labrador Sea waters (uLSW). Four fluorescent components were identified by applying parallel factor analysis (PARAFAC) to 522 excitation emission matrix (EEM) spectra: three humic-like and one protein-like. The FDOM in surface waters of the CAA and BB differed considerably in character from those of the LS, with higher fluorescence intensity in the former. The fluorescence intensities of the two terrestrialhumic-like components (C1, C3) were linearly correlated with apparent oxygen utilization (AOU) in the CAA Arctic outflow and the WGIW whereas only humic-like C3 was significantly correlated with AOU in uLSW. These findings suggest that the humic-like components were produced in situ as organic matter was bio-oxidized.
本次午餐會將為報名參加的師生提供午餐，
我們將于今天中午前在周隆泉樓一樓展廳門口張貼出海報和報名表格
，老師可通過郵件聯系施薇（
vera_shiwei@xmu.edu.cn）、林慶梅（
lqm@xmu.edu.cn）
或簽字報名，研究生請到周隆泉樓一樓海報區域填寫名字報名，
按照報名先后順序，4月30日下午4點以前截止報名，
總報名人數限制在100名以內。如未及時報上名，可于12:
20直接到場聽報告。
