Soil Moisture Experiments SMEX02 and SMEX03

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Soil Moisture Experiments (SMEX02 and SMEX03)

• Science
• Water Cycle
• Algorithms
• Validation
• Technology

• Aircraft Instruments
• PALS
• PSR
• ESTAR/2DSTAR
• AIRSAR
• GPS
• Aircraft flux
• VIS/IR

• Satellite Instruments
• AMSR-E
• SSM/I
• TMI
• Envisat, ERS-2
• Radarsat, Quiksat
• MODIS, ASTER
• TM
• GOES, AVHRR

• Sites (June-July)
• Iowa (Story Co.) 2002
• Algorithms and Water cycle
• Oklahoma 2003
• Validation and New Inst.
• Georgia (Little River) 2003
• Validation
• Alabama (NALMNET) 2003
• Validation
• Brazil 2003
• Validation and algorithm

• Ground Investigations
• Soil moisture
• Soil temperature
• Surface flux and
  atmospheric boundary layer
• Vegetation
• Surface roughness
• Ground based radiometry
• Insitu calibration
• Insitu scaling

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SMEX02 Objectives

• Land surface hydrology-atmosphere interaction
  studies using ground and aircraft flux
  observations
• Development and verification of soil moisture
  retrieval algorithms for agricultural conditions
  with high biomass levels for current (C Band) and
  future (L Band) passive microwave missions
• Validation of Aqua AMSR soil moisture products
  for a range of land cover types
• Soil moisture sampling-scaling, calibration and
  method
• Extension of SAR based soil moisture retrieval
  techniques and data fusion with passive microwave
  radiometry
• Demonstration of new soil moisture retrieval
  concepts and technologies (GPS, 2DSTAR)
• Robust data sets for follow-on modeling

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Soil Moisture Experiments 2003
Aqua AMSR
-
E
Brightness Temperature
SMEX03
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SMEX03 Brazil Study Region Flightlines
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SMEX03 Brazil Transect Flightline
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GRACE Status Report

• Successes to date
• First release of a global gravity field
• A major improvement over predecessors
• First release of time variable gravity field
• Requirements for continuation of mission have
  been met
• Implications for hydrology
• Only the coefficients of the spherical harmonic
  expansion that represents the time variable
  gravity field will be released
• Need to convert these to water mass load
  variations
• Requires basin functions, temporal aliasing
  studies, etc
• Roughly one year before water storage changes can
  be produced

8
GRACE Status Report

• Successes to date
• First release of a global gravity field
• A major improvement over predecessors
• First release of time variable gravity field
• Requirements for continuation of mission have
  been met
• Implications for hydrology
• Only the coefficients of the spherical harmonic
  expansion that represents the time variable
  gravity field will be released
• Need to convert these to water mass load
  variations
• Requires basin functions, temporal aliasing
  studies, etc
• Roughly one year before water storage changes can
  be produced

J. Famiglietti, UCIrvine