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

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Presentation on theme: "Earth Observation from Satellites GEOF 334 MICROWAVE REMOTE SENSING A brief introduction."— Presentation transcript:

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

2 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.

3 EARTH OBSERVING SATELLITES

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

5 - 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

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

7 Overview of satellites and sensor classes

8 26 m x 10 m x 5 m

9

10 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.

11 Global Climate Observing System - Essential Climate Variables

12 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

13 Global Observations - Chlorophyll

14 Global Observations – Geostrophic Current

15 Global Sea Level Change

16 SPATIAL TRENDS

17 LOCAL EFFECT

18 from Lombard et al., EPSL, en presse, 2007 +3,3 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

19 Regular Repeat Observations

20 Demonstration Sea Ice Monitoring http://www.arctic-roos.org

21 Monthly Deviations of Sea Ice Area in the Arctic from merged SMMR and SSMI Data http://www.arctic-roos.org

22 Monitoring sot (aerosols)

23

24 Mesoscale Processes

25 Prestige Oil Spill 2002

26 OIL POLLUTION: A Treath to the Environment

27 Variables, data sources, availability


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