Influence of il dispersed in seawater on the bi-directional reflectance distribution function (BRDF)

• Autorzy: Otremba Z.
• Języki publikacji: EN

Abstrakty

EN

The bidirectional reflectance distribution function (BRDF) of the sea areas polluted by oil-in-water emulsion has been studied at the ends in the visible lihgt spectrum. The Monte Carlo code was applied to model water leaving radiance for the entire upper hemispere. Solar irradiance was represented by 1 billion virtual photos which reach the sea surface ar an angle of 40 deg. The results are displayed as the BRDF vs. two variables: zenith and azimuth angles. The strong impact of wavelenght on the BRDF has been revealed while, the size distribution of oil droplets has an insignificant imact. The presence of oil emulsion modifies the shape of the BRDF significantly, and the latter depends on the oil type. Irradiance reflectances and radiance reflectances derived from BRDFs obtained are also presented.

Słowa kluczowe

EN

oil; seawater; phase function; inherent optical properties (IOP); radiance; biderectional reflectance distribution (BRDF); modelling

PL

ropa naftowa; woda morska; funkcje mocy; radiacja; modelowanie

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2005
• Tom: Vol. 35, nr 1
• Strony: 99--109
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Otremba Z.

• Gdynia Maritime University, ul. Morska 81-87, 81-225 Gdynia, Poland

Bibliografia

• [1] OTREMBA Z., PISKOZUB J., Modelling the bidirectional reflectance distribution function (BRDF) of seawater polluted by an oil film, Optics Express 12(8), 2004, pp. 1671–6; http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-8-1671
• [2] OTREMBA Z., PISKOZUB J., Modeling the remotely sensed optical contrast caused by oil suspended in the sea water column, Optics Express 11(1), 2003, pp. 2–6; http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-8-1671
• [3] OTREMBA Z., PISKOZUB J., Phase functions of oil-in-water emulsions, Optica Applicata 34(1), 2004, pp. 93–9.
• [4] WANG Z., ZENG X., BARLAGE, M., DICKINSON R., GAO, F., SCHAAF C., Using MODIS BRDF and albedo data to evaluate global model land surface albedo, Journal of Hydrometeorology 5(1), 2004, pp. 3–14.
• [5] NICODEMUS F., Reflectance nomenclature and directional reflectance and emissivity, Applied Optics 9(6), 1970, p. 1474–5.
• [6] SANDMEIER, S., MIDDLETON E., DEERING D., QIN W., The potential of hyperspectral bidirectional reflectance distribution function data for grass canopy characterization, Journal of Geophysical Research 104(D8), 1999, pp. 9547–60.
• [7] OLSZEWSKI J., DARECKI M., Derivation of remote sensing reflectance of Baltic waters from above -surface measurements, Oceanologia 41(1), 1999, pp. 99–111.
• [8] SNYDER W., Definition and invariance properties of structured surface BRDF, IEEE Transactions on Geoscience and Remote Sensing 40(5), 2002, pp. 1032–7.
• [9] STRÖMBECK N., Water quality and optical properties of Swedish lakes and coastal waters in relation to remote sensing, Acta Universitatis Uppsaliensis, Series: Comprehensive summaries of Uppsala dissertation from the Faculty of Science and Technology 2001, p. 27.
• [10] HALTRIN V., Diffuse reflection coefficient of a stratified sea, Applied Optics 38(6), 1999, pp. 932–6.
• [11] PETZOLD T., Volume scattering functions for selected ocean waters, Rep. to Contract No. N62269--71-C-0676, SIO (Scripps Institute of Oceanography, La Jolla, USA) Series, Ref. 72–78, 1972; also in: Light in the Sea, [Ed.] J.E.Tyler, Dowden, Hithinsons and Ross Inc., Strounburg, Pennsylvania 1977, p. 384.
• [12] OTREMBA Z., The impact on the reflectance in VIS of a type of crude oil film floating on the water surface, Optics Express 7(3), 2000, pp. 129–34; http://www.opticsexpress.org/abstract.cfm?URI=OPEX-7-3-129.
• [13] O’HAVER T.C., BEGLEY T., Signal-to-noise ratio in higher order derivative spectrometry, Analytical Chemistry 53(12), 1981, pp. 1876–8.
• [14] PISKOZUB J., Effect of ship shadow on in-water irradiance measurements, Oceanologia 46(1), 2004, pp. 103–12.