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Site tower team member name (First Last/Family).: |
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Site tower team member role: |
PI (LIST(TEAM_ROLE)) |
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Site tower team member email: |
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Site tower team member institution (required for PI only): |
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Site tower team member address (not required): |
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Site tower shipping address: |
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Network affiliation(s) of the site.: |
AmeriFlux (LIST(NETWORK)) |
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Method used to measure the flux variables: |
Eddy Covariance (LIST(FLUX_METHOD)) |
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Flux variable measured: |
CO2 (LIST(FLUX_VARIABLE)) |
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Date when data collection for the reported flux variable/method started.: |
(YYYYMMDDHHMM) |
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Date when data collection for the reported flux variable/method ended: |
(YYYYMMDDHHMM) |
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Operational status of flux measurements.: |
Continuous operation (LIST(FLUX_OPERATIONS)) |
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Flux measurements comments: |
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State or province: |
CA (LIST(STATE_PROVINCE)) |
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Short description of the site characteristics and history: |
The Twitchell Wetland site is a 6.5 acre restored wetland on Twitchell Island, that is managed by the California Department of Water Resources (DWR) and the U.S. Geological Survey (USGS). In the fall of 1997, the site was permanently flooded to a depth of approximately 55 cm. The wetland remained fairly unvegetated in patches increasing in size towards the east. The site underwent a major disturbance in 2013 when the vegetation was removed to seed a nearby restored wetland. A flux tower equipped to analyze energy, H2O, CO2, and CH4 fluxes was installed on April 17, 2018. |
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Site research topics: |
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Site funding agencies/institutions (one column only): |
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Latitude of the site.: |
(decimal deg ref WGS84) |
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Longitude of the site: |
(decimal deg ref WGS84) |
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Elevation of the site above sea level: |
(m) |
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Begin date of the location information: |
(YYYYMMDDHHMM) |
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Location information comments: |
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Vegetation type based on the IGBP definition.: |
WET (LIST(IGBP)) |
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Date when this vegetation type first applied: |
(YYYYMMDDHHMM) |
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Vegetation type comments: |
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Land ownership type: |
public (LIST(LAND_OWNERSHIP)) |
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Land owner: |
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Tower web site URL (maintained by tower team): |
(URL) |
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Papers relevant for understanding the site: |
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DOI of the reference: |
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Suggested use of the reference: |
NONE (LIST(REFERENCE_USAGE)) |
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Brief description of paper relevance or other comments: |
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Acknowledgement text (88 character limit): |
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Additional information about the acknowledgement: |
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Offset from UTC of site data: |
(hours) |
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Begin date of the UTC offset: |
(YYYYMMDDHHMM) |
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Offset from UTC comments: |
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Climatological long-term mean annual average air temperature: |
(degrees C) |
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Climatological long-term mean annual average precipitation: |
(mm) |
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K�ppen climate classification: |
Csa (LIST(CLIMATE_KOEPPEN)) |
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Slope and/or relief of the site: |
Flat (LIST(TERRAIN)) |
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Direction the site is facing (Exposure): |
FLAT (LIST(ASPECT)) |
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Prevailing wind direction: |
WSW (LIST(DIR)) |
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Distance for which the ecosystem is homogeneous in the prevailing wind direction.: |
(m) |
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Days per year that the site is covered by snow: |
(days) |
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Recent and historic disturbance and management events that affect the tower site years of measurement: |
Agriculture (LIST(DIST_MGMT)) |
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Type of physical tower structure used in the site: |
walk-up (LIST(TOWER_TYPE)) |
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How the eddy covariance system is powered: |
Solar panels (LIST(TOWER_POWER)) |
