Accession Number ADA571870
Title Incorporating Uncertainties in Satellite-Derived Chlorophyll into Model Forecasts.
Publication Date Oct 2012
Media Count 13p
Personal Author E. Coelho I. Shulman J. R. Gould S. Anderson S. C. McCarthy
Abstract We describe and apply an ensemble approach, similar to that used in environmental modeling, to quantify errors and produce uncertainty maps for satellite-derived ocean color chlorophyll, and we incorporate these uncertainties into hydrodynamic and biophysical models. For an ocean color image, we first apply realistic noise to the satellite top-of-atmosphere radiances, which leads to an ensemble of chlorophyll images. From this ensemble, we derive mean and standard deviation (uncertainty) images for the chlorophyll, which we then incorporate into both hydrodynamic and biophysical forecast models. For both these cases, we create forecast ensemble suites; the ensemble variance provides an indication of uncertainty, or confidence in the chlorophyll forecast. We examine mean and individual forecast ensemble members (R2, spread-skill statistics) to assess predictive value. Thus, we produce a final chlorophyll forecast field that includes uncertainties in both the initial satellite chlorophyll values as well as uncertainties in the hydrodynamic and biological models.
Keywords Bio-optical forecasts
Chlorophylls
Modeling
Models
Oceans
Remote detection
Remote sensing
Satellite imagery
Satellite ocean color
Uncertainty
Uncertainty analysis


 
Source Agency Non Paid ADAS
NTIS Subject Category 47D - Biological Oceanography
47C - Physical & Chemical Oceanography
63C - Infrared & Ultraviolet Detection
Corporate Author Naval Research Lab., Stennis Space Center, MS. Oceanography Div.
Document Type Technical report
Title Note Conference paper.
NTIS Issue Number 1316
Contract Number N/A

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