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Goal:
Provide global land surface initialization
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states
for the retrospective period of 1979 to
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present.
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A
two-tiered approach.
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Tier
1: Spin-up the land surface model off-line
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from
the GCM using the best atmospheric forcing
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data
available. Minimizes forcing bias!
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Tier
2:Assimilate passive microwave remote
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sensing
observations of near-surface soil moisture
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from
SMMR and SSM/I. Minimizes model and
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forcing
bias!
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