Long time-series of turbid coastal water using AVHRR: an example from Florida Bay, USA

Richard P. Stumpf; M.L. Frayer

doi:10.1117/12.266402

6 February 1997 Long time-series of turbid coastal water using AVHRR: an example from Florida Bay, USA

Richard P. Stumpf, M.L. Frayer

Proceedings Volume 2963, Ocean Optics XIII; (1997) https://doi.org/10.1117/12.266402
Event: Ocean Optics XIII, 1996, Halifax, Nova Scotia, Canada

Abstract

The AVHRR can provide information on the reflectance of turbid case II water, permitting examination of large estuaries and plumes from major rivers. The AVHRR has been onboard several NOAA satellites, with afternoon overpasses since 1981, offering a long time-series to examine changes in coastal water. We are using AVHRR data starting in December 1989, to examine water clarity in Florida Bay, which has undergone a decline since the late 1980's. The processing involves obtaining a nominal reflectance for red light with standard corrections including those for Rayleigh and aerosol path radiances. Established relationships between reflectance and the water properties being measured in the Bay provide estimates of diffuse attenuation and light limitation for phytoplankton and seagrass productivity studies. Processing also includes monthly averages of reflectance and attenuation. The AVHRR data set describes spatial and temporal patterns, including resuspension of bottom sediments in the winter, and changes in water clarity. The AVHRR also indicates that Florida Bay has much higher reflectivity relative to attenuation than other southeastern US estuaries.

Citation Download Citation

Richard P. Stumpf and M.L. Frayer "Long time-series of turbid coastal water using AVHRR: an example from Florida Bay, USA", Proc. SPIE 2963, Ocean Optics XIII, (6 February 1997); https://doi.org/10.1117/12.266402

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