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4/18/1989, Sugar BeetData by Dr. Jim Wright, Kimberly ID11ET (mm/hr)0.80.60.40.20.80.60.40.2ETrF007:009:0011:0013:0015:0017:0019:00ET SB(mm) ETr (mm) ETo (mm)ETrFETrF245/20/1989, Sugar BeetData by Dr. Jim Wright, Kimberly ID11ET (mm/hr)0.80.60.40.20.80.60.40.2ETrF07:009:0011:0013:0015:0017:0019:000ET SB(mm) ETr (mm) ETo (mm)ETrFETrF24Figure 5. Plot of ET and ET r F vs. time (from observations of Dr. Jim Wright, Kimberly,Idaho36
Figure 6 shows an example of a daily evapotranspiration map. The range of values for ET 24can be colored using the ERDAS Imagine software so that ET intensity can be readilyobserved on the image.Path 39: Am. Falls - 24-hour ET8/07/00Figure 6. A Map of 24-hour Evapotranspiration37
Page 1 and 2: SEBALSurface Energy Balance Algorit
Page 3 and 4: 6. Tables for surface albedo comput
Page 5 and 6: δ declination of the earth radians
Page 7 and 8: INTRODUCTION1. BACKGROUNDLand manag
Page 9 and 10: THE THEORETICAL BASIS OF SEBAL1. OV
Page 11 and 12: The surface emissivity is the ratio
Page 13 and 14: • Reference evapotranspiration, E
Page 15 and 16: Figure 3. Flow Chart of the Net Sur
Page 17 and 18: 2. The reflectivity for each band (
Page 19 and 20: and ET are specified for the two ex
Page 21 and 22: To complete step 2, model F06_surfa
Page 23 and 24: D. Choosing the “Hot” and “Co
Page 25 and 26: irrigated crops near Kimberly, Idah
Page 27 and 28: where; u * is the friction velocity
Page 29 and 30: Weather stationu, z x, z om, u *H f
Page 31 and 32: Note: An alternative method used by
Page 33 and 34: where;⎛ 2 ⎞⎜1+ x(0.1m)Ψ = 2
Page 35: where; ET inst is the instantaneous
Page 39 and 40: 1. If there is some cloud cover in
Page 41 and 42: • For all other formats (includin
Page 43 and 44: On the main page, select Type in Pa
Page 45 and 46: These values for z om can vary by r
Page 47 and 48: Appendix 3Reference Evapotranspirat
Page 49 and 50: and click on “Open”3. Provide t
Page 51 and 52: 5. Describe weather station and wea
Page 53 and 54: 8. Save the output file using a nam
Page 55 and 56: 4. Go to the Viewer tool and view t
Page 57 and 58: Appendix 5Time Issues Around Weathe
Page 59 and 60: 2. What time interval does the data
Page 61 and 62: The wind speed is 3.4 m/s for the 1
Page 63 and 64: Table 6.3. ESUN λ for Landsat 5 TM
Page 65 and 66: Table 6.6. Typical albedo values.Fr
Page 67 and 68: 4. Make a first guess for T cold by
Page 69 and 70: Fig.3. P40/R30, Landsat 7 ETM+ 4/8/
Page 71 and 72: Fig.5. P40/R30, Landsat 7 ETM+ 4/8/
Page 73 and 74: We open the image or subset image a
Page 75 and 76: Now, we look at the northwest area
Page 77 and 78: (2) The regional weather or soil co
Page 79 and 80: We conclude that this “heat islan
Page 81 and 82: Part 1: using the manual iteration
Page 83 and 84: Part 2: Using the automatic iterati
Page 85 and 86: Appendix 9SAVI and LAI for Southern
Page 87 and 88:
equation for G. The following are e
Page 89 and 90:
and for 24-hours:Gwater = 0.9 Rn -
Page 91 and 92:
The Stability of the AtmosphereAppe
Page 93 and 94:
Appendix 12The SEBAL Mountain Model
Page 95 and 96:
where; t is the standard clock time
Page 97:
N. Momentum Roughness LengthThe mom
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