General Site Information
Site ID:US-Twt
Site Name:Twitchell Island
Tower Team: PI: Dennis Baldocchi <baldocchi@berkeley.edu> - University of California, Berkeley
AncContact: Joe Verfaillie <jverfail@berkeley.edu> - University of California, Berkeley
FluxContact: Elke Eichelmann <eeichelm@berkeley.edu> - UC Berle;eu
Technician: Daphne Szutu <daphneszutu@berkeley.edu> - UC Berkeley
Affiliate: Sara Knox <saraknox.knox@gmail.com> - USGS
Latitude:38.1087
Longitude:-121.6530
Elevation (m):None
NetworkAmeriFlux
IGBP:CRO (Croplands)
Climate Koeppen:Csa (Mediterranean: mild with dry, hot summer)
Mean Annual Temperature (degrees C):15.6
Mean Annual Precipitation (mm):421
Data Products: AmeriFlux BASE Dataset
FLUXNET2015 Dataset
Data Availability: AmeriFlux BASE:   7 years (Duration: 2009 - 2015)
FLUXNET2015:   6 years (Duration: 2009 - 2014)
Data Downloads to Date: AmeriFlux BASE:   231 unique downloads
FLUXNET2015:   458 unique downloads
Data DOIs: AmeriFlux BASE DOI: 10.17190/AMF/1246140
Description:The Twitchell Island site is a rice paddy that is owned by the state and managed by the California Department of Water Resources. While Bare Peat field was leveled for rice planting, the tower was installed on April 3, 2009. The rice paddy was converted from corn in 2007. In Summer 2009, Bispyribac-sodium and Pendimethalin herbicides were applied to the fields prior to rice planting and flooding, then pesticide and fertilizer application took place. Each year after rice is planted in the spring by drilling, the field is flooded. Then, the field is drained in early fall, rice is harvested, and the field site is moved.
Acknowledgments:California Department of Water Resources; USDA/AFRI
Site image(s):
For additional AmeriFlux site images, see the Web site gallery

These pages show the current information available at http://ameriflux.lbl.gov about this tower.
**Site Team Only** If any of this information is wrong or missing, please submit corrections and updates via http://ameriflux.lbl.gov/web-submit-ui/?site_id=US-Twt