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Precipitation & Interception

Precipitation & Interception. Ali Fares Chapter 2. Finish the lecture Lab: how to spatially distribute rainfall and calculate average rainfall rate using two methods: Thiessen Polygon Method Isohyeth method Lab assignment. Rainfall Spatial Distribution.

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Precipitation & Interception

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  1. Precipitation & Interception Ali Fares Chapter 2 Watershed Hydrology NREM 662 Dr. A. Fares.

  2. Finish the lecture • Lab: how to spatially distribute rainfall and calculate average rainfall rate using two methods: • Thiessen Polygon Method • Isohyeth method • Lab assignment. Watershed Hydrology NREM 662 Dr. A. Fares.

  3. Rainfall Spatial Distribution PRIZM model Site-specific Interpolation Watershed Hydrology NREM 662 Dr. A. Fares.

  4. Precipitation Estimation Watershed Hydrology NREM 662 Dr. A. Fares.

  5. Precipitation Estimation Watershed Hydrology NREM 662 Dr. A. Fares.

  6. Precipitation Estimation Watershed Hydrology NREM 662 Dr. A. Fares.

  7. Precipitation Estimation Watershed Hydrology NREM 662 Dr. A. Fares.

  8. Precipitation Estimation Watershed Hydrology NREM 662 Dr. A. Fares.

  9. Precipitation Estimation Watershed Hydrology NREM 662 Dr. A. Fares.

  10. Precipitation Estimation Watershed Hydrology NREM 662 Dr. A. Fares.

  11. Precipitation Estimation Watershed Hydrology NREM 662 Dr. A. Fares.

  12. Missing Data Watershed Hydrology NREM 662 Dr. A. Fares.

  13. Missing Data Watershed Hydrology NREM 662 Dr. A. Fares.

  14. Rainfall Interception Interception: Ic = Pg – Th – Sf Watershed Hydrology NREM 662 Dr. A. Fares.

  15. Rainfall Interception • Conifer forests in North America Ic = 15-40% of Pg • Natural teak forests in Thailand Ic = 65% of Pg • Is influenced by rain: • amount, • duration, • intensity, • and pattern Watershed Hydrology NREM 662 Dr. A. Fares.

  16. Rainfall Distribution & Intensity Watershed Hydrology NREM 662 Dr. A. Fares.

  17. Rainfall Canopy Interception 60% 40% Watershed Hydrology NREM 662 Dr. A. Fares.

  18. Precipitation Measurement • Rain gauges • storage, • weighing, • tipping-bucket • Problems • obstacles, • wind eddies, • evaporation Watershed Hydrology NREM 662 Dr. A. Fares.

  19. Precipitation Measurement Watershed Hydrology NREM 662 Dr. A. Fares.

  20. Tipping-Bucket: Demonstration From the Automated Flood Warning System web site. Watershed Hydrology NREM 662 Dr. A. Fares.

  21. Precipitation Measurement Under Canopy Outside Canopy Watershed Hydrology NREM 662 Dr. A. Fares.

  22. Watershed Hydrology NREM 662 Dr. A. Fares.

  23. Watershed Hydrology NREM 662 Dr. A. Fares.

  24. Precipitation Measurement Watershed Hydrology NREM 662 Dr. A. Fares.

  25. Precipitation Measurement The Standard Fog Collector (Schemenauer and Cereceda, 1994) Watershed Hydrology NREM 662 Dr. A. Fares.

  26. Precipitation Measurement Watershed Hydrology NREM 662 Dr. A. Fares.

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