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Info Center
Picture of baseball fieldThe dynamic Info Center is frequently updated providing useful information on weather stations, evapotranspiration, and irrigation. Information is presented on CIMIS network operations, data processing, and use of the CIMIS data for irrigation scheduling purposes. The following are brief descriptions of the different pages contained in the Info Center:
General
CIMIS Overview CIMIS Overview describes the CIMIS program and how it works. It contains detailed information on how the CIMIS data is collected, processed, stored, and disseminated to the end users.
CIMIS Data Uses The CIMIS Data Uses discusses trends in uses of the CIMIS data over time and lists some examples of the users and uses of CIMIS weather data.
Weather Stations
Station List The Station List provides a listing of all CIMIS stations by station number, station name, county, status and detailed information about that station.
Location Maps Location Maps provides a map of California with the four California Department of Water Resources (DWR) Districts. Clicking on any one of the four Districts takes the user to a detailed map of the District. By clicking on individual stations detailed station information will be provided.
Sensor Specs The Sensor Specifications provides detailed descriptions of the different sensors that CIMIS utilizes to collect the weather data including manufacturer's specifications.
Siting Info Siting Information describes the significance of weather station site conditions and details the siting and environmental criteria CIMIS utilizes in selecting weather station sites. This section can be very helpful in assisting those who may wish to sponsor a CIMIS station.
Network Maintenance Network Maintenance describes procedures that CIMIS personnel use to maintain the weather stations.
Evapotranspiration
ET Overview ETo Overview defines Evapotranspiration and its processes. The necessity for the idea of reference Evapotranspiration (ETo) is explained including how to use it in irrigation scheduling.
Equations Equations describes the Modified Penman and Penman-Monteith equations that CIMIS uses to estimate reference evapotranspiration. Links to these equations are provided at the bottom of the page.
Crop Coefficients The concept of Crop Coefficients is introduced and their use in calculating actual evapotranspiration for a specific crop discussed. Important web site links to crop coefficients are also presented.
ETo Zones Map The ETo Zones Map allows users to view the ETo Zones for the State of California. The map was developed by DWR and UC Davis and divides the State into 18 zones based on long-term monthly average ETo. At present time, the map is not available for downloading from the web.
Irrigation
Irrigation Overview Irrigation Overview explains the need for irrigation and how the CIMIS program can assist growers and landscape managers to irrigate efficiently.
Water Budget The Water Budget method of irrigation scheduling is explained, briefly outlining the various parameters that go into this method of scheduling.
Irrigation Scheduling Deciding when to irrigate and how much water to apply is not an easy task. Here Irrigation Scheduling using the water budget method is discussed in greater detail using an example.
Mobile Labs Using Mobile Labs as a tool to increase irrigation efficiency and distribution uniformity is discussed and related publications listed.
Software Different computer Software programs that can assist irrigators in irrigation scheduling and other decision-making processes are listed.
Consultants Consultants within the state of California that can be hired to assist irrigators are listed with complete contact addresses.
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