Transdisciplinarity Enabled
Table 2 Monthly climatology of ETo values (mm/day) calculated by six empirically based methods and FAO-56 PM during 1967 – 1982
Month | Methods (mm/day) | ||||||
|---|---|---|---|---|---|---|---|
Turc’s [23] | Stephens and Stewart [22], modified by Jensen and Haise | Blaney and Criddle [6] | Blaney and Criddle modified by Shih et al., [21] | Papadakis [15] | P.M modified by Frere and Popov [9] | FAO-56 P.M | |
Jan | 8.7 | 3.09 | 5.06 | 5.7 | 0.31 | 13.12 | 3.3 |
Feb | 9.44 | 3.45 | 5.8 | 6.96 | 0.39 | 15.48 | 3.63 |
Mar | 8.82 | 3.18 | 5.25 | 5.81 | 0.32 | 13.54 | 3.58 |
Apr | 8.6 | 3.03 | 5.31 | 5.79 | 0.33 | 14 | 3.42 |
May | 8.32 | 2.94 | 5.23 | 5.42 | 0.28 | 12.97 | 3.32 |
Jun | 7.1 | 2.42 | 5.29 | 4.65 | 0.23 | 11.82 | 2.92 |
Jul | 6.17 | 2.03 | 5.03 | 3.81 | 0.22 | 10.53 | 2.61 |
Aug | 5.96 | 1.95 | 4.99 | 3.66 | 0.2 | 10.45 | 2.59 |
Sep | 6.82 | 2.3 | 5.19 | 4.44 | 0.24 | 11.83 | 2.9 |
Oct | 7.56 | 2.6 | 5 | 4.84 | 0.26 | 12.21 | 3.07 |
Nov | 8.67 | 3.06 | 5.19 | 5.85 | 0.28 | 13.64 | 3.3 |
Dec | 8.69 | 3.07 | 5.02 | 5.68 | 0.28 | 13.07 | 3.27 |
Average | 7.9 | 2.76 | 5.2 | 5.22 | 0.28 | 12.72 | 3.16 |