In-water remote sensing algorithms for the detection of chlorophyll and yellow substances in the Pomeranian Bay

• Autorzy: Olszewski J. , Kowalczuk P. , Darecki M.
• Języki publikacji: EN

Abstrakty

EN

In-water remote sensing algorithms for estimating chlorophyll concentration and the absorption of light (400 nm) by yellow substances valid for the surface layer of the Pomeranian Bay are described. The accuracy of the algorithms has been estimated at 20-60%. The statistical analysis of data collected during a two-year experiment in 1996-1997 enable algorithms to be constructed which use a linear combination of spectral reflectances at selected wavelengths, all of them in the log-log form. The wavelengths in nm are 510, 550, 589 or 510, 625 in the 'chlorophyll' case, and 589, 665 or 490, 665 in the 'yellow substances' case. The correlation coefficient between the log-transformed reflectance ratios and the chlorophyll concentration is around 0.9. The correlation coefficient between the log-transformed reflectance ratios and the yellow substance absorption coefficient at λ= 400 nm is around 0.6.

Słowa kluczowe

EN

marine optics; remote sensing; local algorithms; Pomeranian Bay

• Wydawca: Polish Academy of Sciences, Institute of Oceanology ; Elsevier
• Czasopismo: Oceanologia
• Rocznik: 1999
• Tom: No. 41 (3)
• Strony: 461--474
• Opis fizyczny: Bibliogr. 8 poz., tab., wykr.

Twórcy

autor

Olszewski J.

autor

Kowalczuk P.

autor

Darecki M.

• Institute of Oceanology, Polish Academy of Sciences, Powstańców Warszawy 55, 81–712 Sopot, Poland,

Bibliografia

• 1. Darecki M., 1998, Analysis of influence of Baltic Sea water constituents on spectra characteristics of upward light field, Ph.D. thesis, Inst. Oceanol. PAN, Sopot, 148 pp., (in Polish).
• 2. Kaczmarek S., Woźniak B., 1995, The application of the optical classification of waters in the Baltic Sea (Case 2 Waters), Oceanologia, 37 (2), 285-297.
• 3. Kowalczuk P., Darecki M., 1998, The relative share of light absorption by yellow substances in total light absorption in the surface layer of southern Baltic Sea, Ocean Optics XIV Conference, Kailua-Kona, Hawaii, USA, November 10-13, 1998, CD–ROM 1052, 9 pp.
• 4. Kowalczuk P., Sagan S., Olszewski J., Darecki M., Hapter R., 1999, Seasonal changes in selected optical parameters in the Pomeranian Bay in 1996–1997, Oceanologia, 41 (3), 309-334.
• 5. Lee Z. P., Carder K. L., Steward R. G., Peacock T. G., Davis C. O., Mueller J. L., 1997, Remote-sensing reflectance and inherent optical properties of oceanic waters derived from above-water measurements, [in:] Ocean Optics XIII Conference, S. G. Ackleson & R. Frouin (eds.), Proc. SPIE, 2963, 160-166.
• 6. Mueller J. L., Zaneveld J. R. V., Pegau S., Valdez E., Maske H., Alvarea-Borrego S., Lara-Lara R., 1997, Remote sensing reflectance: preliminary comparisons between in-water and above-water measurements, and estimates modelled from measured inherent optical properties, [in:] Ocean Optics XIII Conference, S. G. Ackleson & R. Frouin (eds.), Proc. SPIE, 2963, 502-507.
• 7. Olszewski J., Darecki M., 1999, Derivation of remote sensing reflectance of Baltic waters from above-surface measurements, Oceanologia, 41 (1), 99-111.
• 8. O’Reilly J. E., Maritorena S., Mitchell B. G. Siegel D. A., Carder K. L., Garver S. A., Kahru M., McClain C., 1998, Ocean color chlorophyll algorithms for Sea WiFS, J. Geophys. Res., 103 (C11), 24937-24953.