Question

Now calculate budgets for November, December, and January. January will be the first month that the maximum 150 mm of moisture in storage will be reached with some left over. The amount left over will be entered as a surplus. What do you think happens to this surplus in reality? As you would expect, the PE for January is low due to cold temperatures during the winter months The amount of precipitation is comparatively high. P - PE is 81 mm. Because s mm of water from December, there is room only for 17 mm more before the maximum of 150 m reached. This determines the A ST value of 17 mm and the ST value of 150 excess precipitation appears as a 64 mm surplus torage already has 133 m is February, March, and April parallel the kind of situation shown in January. Storage is at a maximum so there will be surpluses of moisture. Now complete Table 8.1 Table 8.2: Water Budget for Charlotte, NC Storage Maximum 150 mm All values in millimeters Jan Feb Apr May un Jul Aug Sep OctNov Dec 89 97 115 86 74 94 116 100 88 68 70 87 PE 10 28 65 105 142 159 146 102 58 26 P-PE -31 -48 ST 150 119 71 A ST -31 -48 AE 105 142 0 P Precipitation PE Potential Evapotranspiration P-PE Precipitation- Potential Evapotranspiration ST Soil Moisture Storage A ST Change in Storage AE Actual Evapotranspiration D Deficit S Surplus Plot San Franciscos precipitation, potential evapotranspiration, and actual evapotranspiration on the following model. Identify soil moisture deficits by shading areas where PE> P and soil moisture has been depleted.

Answer 1

The shaded months represents PE greater than P and has soil moisture deficit

154670 7 58 4 0038 l o -13|-96| -74 |-QUI 441 79 8千 P-PE -3252 ST 152 -14 1-20 144 71 150 34 8 1 '8구 65 4 a AD 自10 6