Remote sensing of the ocean from space Remote Sensing I Lecture 11 Summer 2006.

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Presentation transcript:

Remote sensing of the ocean from space Remote Sensing I Lecture 11 Summer 2006

Overview Sea surface temperature remote sensing Mapping of ocean colour –Biologic activity Remote sensing of sea surface height / topography from altimeters –El Nino detection –Deriving ocean circulation Remote sensing of sea surface roughness from scatterometers –Retrieving wind speed over the oceans

MODIS / Terra: Sea Surface Temperature Gulfstream

Ocean colour: MERIS/ENVISAT, 443 nm

Ocean colour: MERIS/ENVISAT, 560 nm

Ocean colour: MERIS/ENVISAT, Chlorophyll

El Nino: Schematic

El Nino Indices

AVHRR: Sea Surface Temperature Anomaly

TOPEX/POSEIDON: Sea Surface Height Anomaly

Ocean Topography

Altimeter principle: TOPEX/POSEIDON TOPEX/POSEIDON Launched: 10 Aug. 1992

Sea Surface Height: Assimilated from TOPEX from Stammer & Wunsch

Ocean velocity field: Assimilated from TOPEX from Stammer & Wunsch

Retrieving wind speed from altimeter: Principle from Elachi

Surface Winds from Scatterometer: QuickSCAT 21. Sep Hurricane Rita

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