GMS

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GMS Geo Microwave Sounder
Michael Madden GOES R Program Office NOAA/NESDIS/O
SD/RPSI
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Outline

• Introduction
• Microwave Band
• AMSU Examples
• GOES R Applications
• Promising Technology

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Geo Microwave

• Passive Sounder identified as GOES R P3I
• Compliments HES
• Provides high resolution spatial coverage
• Scheduled post 2015 launch
• NOAA/NASA following promising technologies
• Hosted on A, B, or C satellite

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Introduction

• Passive Microwave Sounder
• Based on AMSU experience
• Single and dual band algorithms
• ATMS already flying on NPOESS
• Increases utility of IR sounders
• Previously Identified as a need at GUC II
• NOAA Requirements
• Hemispheric Coverage
• Hourly Updates
• Temperature/Moisture/Precipitation

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Microwave Band
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AMSU Channels
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Hurricane Erin
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Hurricane Erin
AMSU 5 (53.6 GHz)
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Hurricane Erin
AMSU 6 (54.5 GHz)
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Hurricane Erin
AMSU 7 (54.9 GHz)
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Hurricane Erin
AMSU 8 (55.5 GHz)
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Hurricane Erin
AMSU 16 (89 GHz)
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GEM Concepts
GEM GeoSTAR
Approach Solid dish Sparse aperture
Mass 70 kg 100 kg
Power 150 Watts 250 Watts
Electronics 50 x 60 x 40 cm 50 x 60 x 40 cm
Antenna Size 200 cm dish 300 cm strip
Data Rate lt0.5 Mbps lt0.5 Mbps
exact values are TBD
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GEostationary Microwave (GEM)

• Solid dish antenna design
• NOAA/ETL and MIT design
• 5 bands (54, 118, 183, 380 and 424 GHz)
• 43 Channels
• 2m solid dish antenna
• 16 140 km resolution
• CONUS in 90 minutes
• 1500 x 1500 km in 15 minutes

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GEM Resolution
Frequency Resolution
54 GHz 116 km
118 GHz 56 km
183 GHz 36 km
380 GHz 18 km
424 GHz 16 km
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GeoSTAR

• Thinned aperture radiometer
• NASA JPL design
• 3 bands (54, 89 and 183 GHz)
• 10 Channels
• 25 50 km resolution
• Sparse aperture, no moving parts
• Full disk in 60 minutes
• Similar technology on SMOS

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GeoSTAR Resolution
Frequency Resolution
54 GHz 50 km
89 GHz 25 km
183 GHz 50 km
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Summary

• Passive microwave sounder identified as P3I
• Technology continuing, currently PDR
• Provide moisture, temperature, precipitation
• Cloud clearing for HES
• Based on AMSU/ATMS bands
• NOAA/NASA following promising technologies
• GEM
• GeoSTAR
• First Launch planned for 2015
• Stay Tuned!

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Acknowledgements

• AMSU Imagery courtesy of UW/CIMSS
• GEM information courtesy of Al Gasiewski,
  NOAA/ETL
• GeoSTAR information courtesy of Bjorn
  Lambrigtsen, NASA/JPL
• Microwave information courtesy of Shyam Bajpai,
  NOAA/NESDIS