Remote sensing of the ocean from space Remote Sensing I Lecture 11 Summer 2006.
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Transcript of Remote sensing of the ocean from space Remote Sensing I Lecture 11 Summer 2006.
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
1996
1997
1998
TOPEX/POSEIDON: Sea Surface Height Anomaly
1996
1997
1998
Ocean Topography
Altimeter principle: TOPEX/POSEIDON
TOPEX/POSEIDONLaunched: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. 2005Hurricane Rita
