Optical teledetection of chlorophyll a in turbid inland waters

TY - JOUR

T1 - Optical teledetection of chlorophyll a in turbid inland waters

AU - Gons, H.J.

N1 - Reporting year: 1999 Metis note: 2478; CL; MWE; file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs1999/Gons_2478.pdf

PY - 1999

Y1 - 1999

N2 - Determination of subsurface spectral irradiance reflectance by use of a hand-held spectroradiometer and then estimation of chlorophyll a (Chl-a) concentration facilitate assessment of ecological change in turbid lakes, rivers, and estuaries. The method was applied under widely varying solar elevation and weather. Noise due to reflected sky light was evaluated by theory on surface waves and by field data. A strong relationship was established for the shallow and eutrophic freshwater IJssel Lagoon including the River IJssel (The Netherlands) between corrected Chi-a concentrations (3-185 mg m(-3)) and the reflectance ratio for 704 and 672 nm with backscattering derived from the reflectance at 776 nm (R-2 > 0.95; N = 114; Standard error of estimate

AB - Determination of subsurface spectral irradiance reflectance by use of a hand-held spectroradiometer and then estimation of chlorophyll a (Chl-a) concentration facilitate assessment of ecological change in turbid lakes, rivers, and estuaries. The method was applied under widely varying solar elevation and weather. Noise due to reflected sky light was evaluated by theory on surface waves and by field data. A strong relationship was established for the shallow and eutrophic freshwater IJssel Lagoon including the River IJssel (The Netherlands) between corrected Chi-a concentrations (3-185 mg m(-3)) and the reflectance ratio for 704 and 672 nm with backscattering derived from the reflectance at 776 nm (R-2 > 0.95; N = 114; Standard error of estimate

U2 - 10.1021/es9809657

DO - 10.1021/es9809657

M3 - Article

SN - 0013-936X

VL - 33

SP - 1127

EP - 1132

JO - Environmental Science and Technology

JF - Environmental Science and Technology

IS - 7

ER -