New aerosol models for the retrieval of aerosol optical thickness and normalized water-leaving radiances from the SeaWiFS and MODIS sensors over coastal regions and open oceans
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...The model takes into account eight variations of relative humidity (95%, 90%, 85%, 80%, 75%, 70%, 50% and 30%), as well as 10 variations on how fine or coarse the particles are, resulting in a total of 80 variants [159]....
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...The availability of data from AERONET has paved the way for the creation of aerosol models [159,162]....
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...[159] developed a model for the ocean colour sensors, SeaWiFS and MODIS....
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...The optical properties of atmospheric aerosols can be classified in terms of their aerosol optical depth, Angstrom exponent, single scattering albedo, phase function and size distribution [27,30,159]....
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...…(lunar views and intense ground efforts) to set sensor gains and offsets, and advanced algorithms to correct satellite signals for the atmospheric path radiance and establish the relationships between ocean ref lectance spectra and ocean properties (McClain 2009; Ahmad et al. 2010; NRC 2011)....
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202 citations
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...It is, thus, necessary to augment/ update the existing aerosol models (Ahmad et al., 2010) to reduce the associated noise when retrieving Rrs over inland waters, in particular, those with high loads of dissolved organic matters....
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...Pahlevan et al. (2017a) showed that if the ambient aerosol properties are not represented in the aerosol models (Ahmad et al., 2010), high uncertainties in Rrs(443) are expected....
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...(2017a) showed that if the ambient aerosol properties are not represented in the aerosol models (Ahmad et al., 2010), high uncertainties in Rrs(443) are expected....
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References
6,535 citations
"New aerosol models for the retrieva..." refers background in this paper
...[16,17], Dubovik and King [18], Dubovik et al....
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2,691 citations
"New aerosol models for the retrieva..." refers background in this paper
...(1) takes the form dNðrÞ d ln r ¼ X2 i¼1 Noiffiffiffiffiffi 2π p σi exp − ln r − ln rnoiffiffiffi 2 p σi 2 ; ð2Þ where Noi is the number of particles, and rnoi is the mean geometric radius of the ith distribution, and the radius rnoi and Noi are, respectively, related to rvoi and Voi as ln rnoi ¼ ln rvoi − 3σ2i ; ð3aÞ Noi ¼ Voi½0:75=ðπr3noiÞ expð−4:5σ2i Þ: ð3bÞ Two other quantities of interest are effective radius (reff ) and effective variance (veff ), which are defined as reff ¼ Zrmax rmin πr3nðrÞdr= Zrmax rmin πr2nðrÞdr; ð4aÞ veff ¼ Zrmax rmin ðr − reff Þ2πr2nðrÞdr=r2eff Zrmax rmin πr2nðrÞdr; ð4bÞ where nðrÞ ¼ dN=dr: Hansen and Travis [24] have shown that all distributions (for example, modified gamma, power law, and various lognormal distributions) that have the same values of reff and veff have very similar scattering properties....
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...Hansen and Travis [24] have shown that all distributions (for example, modified gamma, power law, and various lognormal distributions) that have the same values of reff and veff have very similar scattering properties....
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...The details of AERONET network and measurements are described in many papers, including Holben et al. [16,17], Dubovik and King [18], Dubovik et al. [19–22] and Sinyuk et al. [23]....
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...[16,17], Dubovik and King [18], Dubovik et al....
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1,891 citations