We studied alfalfa growing on Twitchell Island between 2013 and 2018. Alfalfa is an ideal natural laboratory for studying land atmosphere interactions as it is a perennial with a long growing season and experiences multiple cuttings, which modulates its leaf area index.

We used this site to test the LGR stable isotope spectrometer

Oikawa, P. Y., C. Sturtevant, S. H. Knox, J. Verfaillie, Y. W. Huang, and D. D. Baldocchi. 2017. Revisiting the partitioning of net ecosystem exchange of CO2 into photosynthesis and respiration with simultaneous flux measurements of 13CO2 and CO2, soil respiration and a biophysical model, CANVEG., Agricultural and Forest Meteorology, 234, 149-163. 

We also collaborated with Martha Anderson's team at USDA to upscale evaporation fluxes across the delta

Anderson, M., Gao, F., Knipper, K., Hain, C., Dulaney, W., Baldocchi, D., Eichelmann, E., Hemes, K., Yang, Y., Medellin-Azuara, J. and Kustas, W., 2018. Field-scale assessment of land and water use change over the California Delta using remote sensing. Remote Sensing, 10(6), p.889. 

Data and site information are available on the Ameriflux web site

https://ameriflux.lbl.gov/sites/siteinfo/US-Tw3