题名: Chlorophyll-a Estimation Around the Antarctica Peninsula Using Satellite Algorithms: Hints from Field Water Leaving Reflectance
作者: Zeng, Chen1,2; Xu, Huiping1,3; Fischer, Andrew M.4
刊名: SENSORS
出版日期: 2016-12-01
卷号: 16, 期号:12
关键词: water leaving reflectance ; skylight downwelling radiance ; chlorophyll-a estimation ; MODIS ; VIIRS
英文摘要: Ocean color remote sensing significantly contributes to our understanding of phytoplankton distribution and abundance and primary productivity in the Southern Ocean (SO). However, the current SO in situ optical database is still insufficient and unevenly distributed. This limits the ability to produce robust and accurate measurements of satellite-based chlorophyll. Based on data collected on cruises around the Antarctica Peninsula (AP) on January 2014 and 2016, this research intends to enhance our knowledge of SO water and atmospheric optical characteristics and address satellite algorithm deficiency of ocean color products. We collected high resolution in situ water leaving reflectance (+/- 1 nm band resolution), simultaneous in situ chlorophyll-a concentrations and satellite (MODIS and VIIRS) water leaving reflectance. Field samples show that clouds have a great impact on the visible green bands and are difficult to detect because NASA protocols apply the NIR band as a cloud contamination threshold. When compared to global case I water, water around the AP has lower water leaving reflectance and a narrower blue-green band ratio, which explains chlorophyll-a underestimation in high chlorophyll-a regions and overestimation in low chlorophyll-a regions. VIIRS shows higher spatial coverage and detection accuracy than MODIS. After coefficient improvement, VIIRS is able to predict chlorophyll a with 53% accuracy.
WOS标题词: Science & Technology ; Physical Sciences ; Technology
类目[WOS]: Chemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
关键词[WOS]: INHERENT OPTICAL-PROPERTIES ; SOUTHERN-OCEAN ; ATMOSPHERIC CORRECTION ; BIOOPTICAL PROPERTIES ; CHESAPEAKE BAY ; COLOR ; PHYTOPLANKTON ; ABSORPTION ; VARIABILITY ; RETRIEVALS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000391303000095
Citation statistics:
内容类型: 期刊论文
URI标识: [http://ir.idsse.ac.cn/handle/183446/1682]  
Appears in Collections:深海科学与工程研究所_深海工程技术部_其他_期刊论文


作者单位: 1.Tongji Univ, Sch Ocean & Earth Sci, Shanghai 200092, Peoples R China
2.Univ British Columbia, Dept Earth Ocean & Atmospher Sci, Vancouver, BC V6T 1Z4, Canada
3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
4.Univ Tasmania, Inst Marine & Antarctic Studies, Launceston, Tas 7250, Australia
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