DOI: 10.1016/j.jag.2016.09.001
Scopus记录号: 2-s2.0-85004140700
论文题名: Re-parameterization of a quasi-analytical algorithm for colored dissolved organic matter dominant inland waters
作者: Ogashawara I ; , Mishra D ; R ; , Nascimento R ; F ; F ; , Alcântara E ; H ; , Kampel M ; , Stech J ; L
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2016
卷: 53 起始页码: 128
结束页码: 145
语种: 英语
英文关键词: Absorption coefficient of phytoplankton
; Bio-optical model
; Colored dissolved organic matter
; Inherent optical properties
; Inland waters
; Quasi-analytical algorithm
; Remote sensing reflectance
Scopus关键词: absorption
; algorithm
; dissolved organic matter
; parameterization
; phytoplankton
; reflectance
; reservoir
; spatiotemporal analysis
; Brazil
; Brazil
; Funil Reservoir
; Itumbiara Reservoir
; Rio de Janeiro [Brazil]
; algae
英文摘要: Quasi-Analytical Algorithms (QAAs) are based on radiative transfer equations and have been used to derive inherent optical properties (IOPs) from the above surface remote sensing reflectance (Rrs) in aquatic systems in which phytoplankton is the dominant optically active constituents (OACs). However, Colored Dissolved Organic Matter (CDOM) and Non Algal Particles (NAP) can also be dominant OACs in water bodies and till now a QAA has not been parametrized for these aquatic systems. In this study, we compared the performance of three widely used QAAs in two CDOM dominated aquatic systems which were unsuccessful in retrieving the spectral shape of IOPS and produced minimum errors of 350% for the total absorption coefficient (a), 39% for colored dissolved matter absorption coefficient (aCDM) and 7566.33% for phytoplankton absorption coefficient (aphy). We re-parameterized a QAA for CDOM dominated (hereafter QAACDOM) waters which was able to not only achieve the spectral shape of the OACs absorption coefficients but also brought the error magnitude to a reasonable level. The average errors found for the 400–750 nm range were 30.71 and 14.51 for a, 14.89 and 8.95 for aCDM and 25.90 and 29.76 for aphy in Funil and Itumbiara Reservoirs, Brazil respectively. Although QAACDOM showed significant promise for retrieving IOPs in CDOM dominated waters, results indicated further tuning is needed in the estimation of a(λ) and aphy(λ). Successful retrieval of the absorption coefficients by QAACDOM would be very useful in monitoring the spatio-temporal variability of IOPS in CDOM dominated waters. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80119
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Indiana University—Purdue University Indianapolis, Department of Earth Sciences, Indianapolis, IN, United States; Center for Geospatial Research, University of Georgia, Department of Geography, Athens, GA, United States; Geopixel, São é dos Campos, Jos, SP, Brazil; São Paulo State University, Department of Cartography, Presidente PrudenteSP, Brazil; National Institute for Space Research, Remote Sensing Division, São é dos Campos, Jos, SP, Brazil
Recommended Citation:
Ogashawara I,, Mishra D,R,et al. Re-parameterization of a quasi-analytical algorithm for colored dissolved organic matter dominant inland waters[J]. International Journal of Applied Earth Observation and Geoinformation,2016-01-01,53