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NOAA National Ocean Service (NOS) Requirements for GOES-R Ocean Color Capability

NOAA National Ocean Service (NOS) Requirements for GOES-R Ocean Color Capability. Introduction

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NOAA National Ocean Service (NOS) Requirements for GOES-R Ocean Color Capability

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  1. NOAA National Ocean Service (NOS) Requirements for GOES-R Ocean Color Capability Introduction NOAA’s coastal monitoring mission requires the GOES-R HES/Coastal Waters Imager to provide timely and reliable water quality information for ecosystem monitoring and management, and to address climate variability. To address the mission requirements, observations are needed for chlorophyll, suspended sediment, water clarity, and algal species. High spatial and temporal resolution measurements are needed at the following wavelengths: 412, 443, 490, 510, 555, 580, 610, 645, 667, 678, 709, 765 and 865 nm. Justification, demonstrated uses, and examples are shown below. Ocean Color Applications To Support NOS Mission Required Wavelengths To Estimate Variables Examples from NOS regions of interest Demonstrated Use Supporting Variables Detect HABS in Turbid Water Fluorescence Line Height MODIS, MERIS Washington and Oregon coast 667, 678 MERIS FLH Source: Gower et al. MODIS FLH Source: Letelier et al. CDOM and Chlorophyll Separator 412, 443, 490, 667, 678, 709 SeaWiFS, MODIS CDOM Absorption at 412 nm. Source: Gould et al. Gulf of Mexico Landsat-7 Algae in Green Bay Source: LakeSat.org Detect Blue-Green Algae The Great Lakes Chlorophyll 555, 580, 610, 645 Aircraft Microcystis bloom in western basin of Lake Erie, 8/18/03. Source: www.epa.gov/2004update 555, 610, 645, 675 CZCS, AVHRR, SeaWiFS, MODIS Monitor Water Clarity Sediment Load Low High US East Coast MODIS Rrs640 (i.e. turbidity) Source: Ransibrahmanakul et al. Light attenuation Source: NASA/Goddard Space Flight Center and Orbimage SeaWiFS, MODIS US West Coast Light Attenuation 490, 555 Understand Climate Variability Eight-year time series of chlorophyll from SeaWiFS, over Monterey Bay National Marine Sanctuary. Source: Ojanen et al. Chlorophyll in Clear water 443, 490, 510, 555 US West Coast SeaWiFS All atmospheric correction algorithms for ocean color rely on near IR bands to determine the amount and type of aerosol present. However, the Near IR is also contaminated by light scattered from sediment in the ocean, especially in the coastal zone. Three unknown quantities (total light from atmosphere, total light from water, and type of aerosol) require three channels to solve the atmospheric correction equation. The proposed channels for the GOES-R Coastal Waters Imager are 709, 765, and 865 nm. Presenters: Varis Ransibrahmanakul, Richard P. Stumpf, both of NOAA NOS, and John J. Pereira of NOAA NESDIS. Contact: Varis.Ransi@noaa.gov 301 713 3028 x 142 NOAA NOS, 1305 East-West Hwy, N/SCI rm 9111, Silver Spring, MD 20910 A Priori For All Water Retrievals 709, 765, 865 SeaWiFS MODIS, MERIS Atmospheric Correction

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