CIMIS
Developer | California Department of Water Resources (DWR) and the University of California, Davis (UC Davis) |
Overview | The California Irrigation Management Information System (CIMIS) is a program for weather data collection transmission and processing for California. CIMIS was developed in 1982 by DWR (UC Davis). It was designed to assist irrigators in managing their water resources more efficiently. CIMIS stations collect weather data that is analyzed and stored in a database server, which makes it available over the internet. |
Coverage | Statewide, California (currently 145 stations) |
Sensors | Total solar radiation (pyranometer) |
Number of stations in the Delta | 15 (vicinity of the Delta) |
Data frequency | CIMIS data provided in hourly, daily, and monthly timesteps. |
Data availability | Freely available from the website. Requires a user's registration for an online account. |
Data Format | Web report, XML, CSV, or PDF |
Website | |
Note | Spatial CIMIS is a derived product of CIMIS and is an interpolated model of weather information (air temperature, relative humidity, and wind speed values at 2km pixels) that provides information on areas between CIMIS stations for the purposes of reference ET (ETo). Daily ETo at a 2 km spatial resolution are calculated statewide using the American Society of Civil Engineers version of the Penman-Monteith equation (ASCE-PM). See Spatial CIMIS model description for more details. |
References (example studies):
Howes, D. J. (2017). A Comparative Study for Estimating Crop Evapotranspiration in the Sacramento-San Joaquin Delta - Appendix F. Irrigation Training and Research Center Mapping Evapotranspiration at High Resolution with Internalized Calibration (ITRC-METRIC). UC Davis, CA.
Morandé, J. A., Trezza, R., Anderson, A., U, K. T. P., Jin, Y., Jankowski, J., … Chen, Y. (2018). A Comparative Study for Estimating Crop Evapotranspiration in the Sacramento-San Joaquin Delta - Appendix L: Evapotranspiration Estimation from Unmanned Aerial Vehicle Imagery. UC Davis, CA
AmeriFlux
Developer | US Dept of Energy |
Overview | A network of PI-managed sites measuring ecosystem CO2, water, and energy fluxes. |
Coverage | North, South, Central America |
Sensors | Description of all variable available: |
Number of stations in the Delta | 6 core sites |
Data frequency | 30min intervals (core stations) |
Data availability | Freely available from the website. Requires online account. |
Data format | Online query exports CSV |
Website | |
Notes | Core sites are operated by Dennis Baldocchi of UC Berkeley for the California Delta cluster. All sites use the Biological, Ancillary, Disturbance and Metadata (BADM) protocol, standardized across AmeriFlux, ICOS, Fluxnet and other networks. |
References (example studies):
Eichelmann, E., Hemes, K. S., Knox, S. H., Oikawa, P. Y., Chamberlain, S. D., Sturtevant, C., … Baldocchi, D. D. (2018). The effect of land cover type and structure on evapotranspiration from agricultural and wetland sites in the Sacramento–San Joaquin River Delta, California. Agricultural and Forest Meteorology, 256–257(March), 179–195. https://doi.org/10.1016/j.agrformet.2018.03.007
Hatala, J. A., Detto, M., Sonnentag, O., Deverel, S. J., Verfaillie, J., & Baldocchi, D. D. (2012). Greenhouse gas (CO2, CH4, H2O) fluxes from drained and flooded agricultural peatlands in the Sacramento-San Joaquin Delta. Agriculture, Ecosystems and Environment, 150, 1–18. https://doi.org/10.1016/j.agee.2012.01.009