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COSMOS use at the Southern Sierra Critical Zone Observatory
3rd Annual COSMOS Workshop
Matthew MeadowsSierra Nevada Research InstituteUniversity of California Merced
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Critical Zone Observatories
http://criticalzone.org
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CZO Common Infrastructure
With the goal to:• resolve the evolution and formation of the CZ
and its attributes• measure the properties and structure of the
present-day CZ• construct carbon, mass and energy balances
(event- to long-time scales)Energy
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Southern Sierra CZO
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Southern Sierra Critical Zone Observatory (CZO) soil moisture measurements:
• cosmic-ray• time domain reflectometry (TDR)• dielectric• neutron probe• physical sampling techniques.
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Installation and Survey
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Hiking the COSMOS sensor into P301.
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Volumetric Water Content
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Volumetric Water ContentRecalibrated
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Effective soil depth
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Snow depth
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Snow depth variability
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Dealing with snow
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Soil water estimates, 0-30 cm
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Correlation of COSMOS VWC
with distributed sensor network during no-snow
conditions
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The Future
• Easy to deploy– Elevations, aspects, sets of sensors
• Soil moisture and vegetation– Timing of moisture stress– Evapotranspiration
• Snow and/or snow+soil storage
http://criticalzone.org/
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Common CZO Infrastructure
• Fluxes within and across the critical zone boundaries– vegetation-atmospheric– terrestrial-aquatic– soil-atmospheric– soil-plant– bedrock-soil
http://criticalzone.org/