Diurnal Variation of Light Absorption in the Yellow River Estuary

doi:10.3390/rs10040542

	Diurnal Variation of Light Absorption in the Yellow River Estuary
	Hao, Yanling 1; Cui, Tingwei 2; Singh, Vijay P.3,4; Zhang, Jie 2; Yu, Ruihong 1; Zhao, Wenjing 5
刊名	REMOTE SENSING
	2018-04
卷号	10 期号:4
关键词	Yellow River Estuary diurnal variation optical properties colored dissolved organic matter (CDOM) non-algal particles suspended particle matter (SPM)
ISSN号	2072-4292
DOI	10.3390/rs10040542
英文摘要	Considering the influence of river discharge and strong winds, the diurnal variability of ocean optical absorption properties in the Yellow River Estuary (YRE) is quantified, using in-situ measurements. The study finds that terrestrial sources due to the Yellow River discharge can cause high diurnal variation of water absorption because of the movement of river plume in the YRE, but such an influence diminishes far away from the Yellow River plume. The diurnal variability of water absorption, affected by strong winds, is found to be strengthened with a rapid increase of particles and colored dissolved organic matter (CDOM) arising from re-suspended sediment induced by wave forcing. The diurnal variability of particle absorption is controlled by non-algal particle absorption in the YRE, and the ratio of non-algal particle absorption (aNAP) and total particle absorption for most wavelengths is more than 0.56. The diurnal variation of spectral slope of non-algal particle absorption (SNAP) is found to vary within a narrow range, although large variability in the aNAP spectrum is observed. The CDOM is correlated negatively with salinity, and such negative correlation becomes weaker with the decreasing influence of riverine input. The spectral slope of CDOM absorption (Sg) may reflect the formation and constituents of CDOM with weak relationship to its concentration, and its relationship with the absorption of CDOM at 440 nm may be associated with the source of CDOM. The value of Sg, which is affected by re-suspended bottom sediment, is much lower than that derived from CDOM affected by Yellow River runoff. Disregarding the absorption of pure water, the diurnal variability of total water absorption stems principally from changes in non-algal particle matter rather than CDOM and Chl-a. By the observations of hourly GOCI (Geostationary Ocean Color Imager) data, the major diurnal variations of remote sensing reflectance at 680 nm are observed in near-coastal waters and the estuary of the Yellow River, which are mainly influenced by the flow discharge of Yellow River and strong winds. Finally, the seasonal differences of diurnal variations of water absorption caused by strong winds and river discharge are determined.
资助项目	China-Korea Joint Ocean Research Center[PI-2017-3]
WOS关键词	DISSOLVED ORGANIC-MATTER ; SUSPENDED PARTICULATE MATTER ; INHERENT OPTICAL-PROPERTIES ; CHLOROPHYLL-A CONCENTRATION ; OCEAN-COLOR PRODUCTS ; BOHAI SEA ; SEASONAL VARIABILITY ; PHYTOPLANKTON ABSORPTION ; BIOOPTICAL PROPERTIES ; YANGTZE ESTUARY
WOS研究方向	Remote Sensing
语种	英语
出版者	MDPI
WOS记录号	WOS:000435187500054
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25624]
专题	自然资源部第一海洋研究所
通讯作者	Hao, Yanling
作者单位	1.Inner Mongolia Univ, Sch Ecol & Environm, Hohhot 010021, Peoples R China 2.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China 3.Texas A&M Univ, Dept Biol & Agr Engn, College Stn, TX 77843 USA 4.Texas A&M Univ, Dept Civil & Environm Engn, College Stn, TX 77843 USA 5.Minist Environm Protect RPC, South China Inst Environm Sci, Guangzhou 510301, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Hao, Yanling,Cui, Tingwei,Singh, Vijay P.,et al. Diurnal Variation of Light Absorption in the Yellow River Estuary[J]. REMOTE SENSING,2018,10(4).
APA	Hao, Yanling,Cui, Tingwei,Singh, Vijay P.,Zhang, Jie,Yu, Ruihong,&Zhao, Wenjing.(2018).Diurnal Variation of Light Absorption in the Yellow River Estuary.REMOTE SENSING,10(4).
MLA	Hao, Yanling,et al."Diurnal Variation of Light Absorption in the Yellow River Estuary".REMOTE SENSING 10.4(2018).