Earth Observation from Satellites GEOF 334 MICROWAVE REMOTE SENSING A brief introduction.

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Presentation transcript:

Earth Observation from Satellites GEOF 334 MICROWAVE REMOTE SENSING A brief introduction

Oceanography from Space is GLOBAL with REPEAT VISIT near SIMULTANEOUS and provide data in NEAR REAL TIME Oceanography from space is vital for the monitoring and understanding of the ocean and its fundamental role in the integrated Earth system, both w.r.t. the ENVIRONMENT, CLIMATE CHANGE, HAZARDS & EXTREME EVENTS and SECURITY.

EARTH OBSERVING SATELLITES

Animations - Launch (actual) - Launch sequence (simulation) - Polar Orbiting satellite (simulation)

- Provide long time series - Strengthen process understanding - Vital for ocean model validation, for assimilation and for Operational Oceanography - Provide good atmospheric forcing fields for ocean models - Are often optimal when properly combined with in-situ data Satellite Observations

Overview of satellite sensor classes The Electromagnetic Spectrum f (frequency) = C (em speed)/ L (wavelength) Radars & Passive RadiometerOptical Sensors

Overview of satellites and sensor classes

26 m x 10 m x 5 m

Oceanography from Space is GLOBAL with REPEAT VISIT near SIMULTANEOUS and provide data in NEAR REAL TIME Oceanography from space is vital for the monitoring and understanding of the ocean and its fundamental role in the integrated Earth system, both w.r.t. the ENVIRONMENT, CLIMATE CHANGE, HAZARDS & EXTREME EVENTS and SECURITY.

Global Climate Observing System - Essential Climate Variables

OCEAN SURFACE QUANTITIES MEASURED FROM SPACE? SEA LEVEL CHLOROPHYLL NEAR SURFACE WIND WAVES SURFACE TEMPERATURE ICEBERG SEA ICE SURFACE CURRENT SURFACE SALINITY SEA ICE THICKNESS GEOID & MDT

Global Observations - Chlorophyll

Global Observations – Geostrophic Current

Global Sea Level Change

SPATIAL TRENDS

LOCAL EFFECT

from Lombard et al., EPSL, en presse, ,3 mm/an +1,3 mm/an +1,9 mm/an ? Problem of instrumental correction ? T/P, Jason-1 : Total sea level variation GRACE : ocean mass variation Jason-1 minus GRACE : steric variation in situ (ARGO) : 0-700m steric contribution Undestanding the MSL variations Use of GRACE Use of in-situ and in particular of ARGO network

Regular Repeat Observations

Demonstration Sea Ice Monitoring

Monthly Deviations of Sea Ice Area in the Arctic from merged SMMR and SSMI Data

Monitoring sot (aerosols)

Mesoscale Processes

Prestige Oil Spill 2002

OIL POLLUTION: A Treath to the Environment

Variables, data sources, availability