1. AgriMet Network TWG 2012 Jama Hamel

8. AgriMet Network Expansion Since 1983

9. AgriMet Partnerships –Over 25 entities, including: Federal agencies State agencies Soil & water conservation districts Universities Public utilities Private enterprise

10. AgriMet Operations: Data Collection

19. Hourly Data Transmissions –Channel 170 (100% HDR in 2008) –Transmit from 00:15:00 to 00:30:00 –Stations transmit alphabetically –Data posted to the website each hour

20. AgriMet Operations: ET Computation

21. AgriMet uses the 1982 Kimberly- Penman ET model Developed by USDA Agricultural Research Service in Kimberly, Idaho Alfalfa based reference model

22. Crop coefficients relate reference ET to crop specific ET: ET c = ET r x K c ET c Specific Crop Consumptive Use ET r Reference Evapotranspiration (Alfalfa) K c Crop Coefficient (varies with time)

23. Generalized Crop Coefficients for Field and Row Crops From: Allen, R. G

26. ET can vary considerably from one day to the next

27. AgriMet Operations: Site Maintenance and Calibration

35. Precision Relative Humidity/Temperature Chamber

36. AgriMet Operations: Data Quality Control / Quality Assurance

37. Automated Q/C –Satellite transmission quality checks –Upper and lower limit checks on sensor data –Rate of change between consecutive readings

38. Manual Q/C –Every morning, data graphically reviewed –Geographically similar stations grouped –All weather parameters reviewed –Bad data estimated or deleted –Dependent computations (ET) recomputed

40. AgriMet Operations: Other Uses of AgriMet Data

41. Other uses of AgriMet information –National Weather Service –State DEQ investigate pesticide application and ground water contamination issues –Electric utilities model heating/air conditioning and peaking power requirements –State water departments

42. Other uses of AgriMet information: Verification and calibration of satellite technologies

43. Other uses of AgriMet information: Source of ET data for “Smart Irrigation Controllers” for Turf Grass

44. Questions?