Table IV. Evaluating indices ETP...

Table IV.

Evaluating indices ETP estimation methods (mm/day)

Indices	January	February	March	April	May	June	July	August	September	October	November	December	ANN
Kermanshah
RMSE
HS	0.2	0.2	0.4	0.4	0.8	1.0	1.2	0.9	0.8	0.5	0.3	0.2	0.6
PT	0.3	0.4	0.6	0.8	1.0	1.9	2.4	2.5	2.2	1.5	0.7	0.4	1.2
MAE
HS	10	10	11	7.6	10.5	8.5	9.9	8.9	11	10	11	11	10
PT	29	26	25	20	22.3	35	45	53	62	65	54	45	40
MBE
HS	0.0	0.1	0.1	0.0	−0.4	0.0	0.0	−0.2	0.0	0.0	−0.1	0.0	−0.1
PT	0.3	0.4	0.6	0.6	0.8	1.7	2.3	2.4	2.1	1.4	0.6	0.4	1.1
Hamedan
RMSE
HS	0.2	0.2	0.4	0.4	0.9	1.3	1.5	1.3	1.0	0.5	0.3	0.2	0.7
PT	0.3	0.3	0.6	0.9	1.2	1.9	2.7	2.8	2.0	1.3	0.7	0.4	1.3
MAE
HS	20	18	14	9.3	14.5	13	15	15	14	10	15	16	14
PT	26	20	26	28	27.2	38	54	64	63	66	57	48	43
MBE
HS	0.1	0.1	0.1	0.1	−0.2	0.0	0.2	0.3	0.0	0.1	0.0	0.0	0.1
PT	0.2	0.2	0.5	0.8	0.8	1.7	2.5	2.6	1.9	1.2	0.6	0.3	1.1
Sanandaj
RMSE
HS	0.2	0.2	0.3	0.4	0.8	1.1	1.4	1.2	0.9	0.5	0.3	0.2	0.6
PT	0.2	0.2	0.5	0.7	0.9	1.4	1.9	1.9	1.6	1.1	0.5	0.4	0.9
MAE
HS	12	10	10	8.7	11.4	11	13	13	12	12	15	14	12
PT	19	16	17	18	19.1	26	35	41	46	51	40	40	31
MBE
HS	0.0	0.0	0.0	0.0	−0.5	0.0	0.0	−0.6	0.0	0.0	−0.2	0.0	−0.3
PT	0.1	0.1	0.3	0.5	0.6	1.2	1.8	1.7	1.5	1.0	0.4	0.3	0.8
Khorramabad
RMSE
HS	0.3	0.4	0.5	0.9	1.4	2.3	2.6	2.2	1.5	0.9	0.5	0.4	1.2
PT	0.3	0.4	0.6	0.7	1.0	1.5	1.7	1.8	1.8	1.2	0.7	0.5	1.0
MAE
HS	18	17	15	18	20.3	25	25	23	22	20	20	22	20
PT	25	22	22	18	23.2	27	31	37	49	51	42	36	32
MBE
HS	0.0	0.0	−0.3	−1	−1.1	−2	−2	−1.6	−1	0.0	−0.4	0.0	−0.8
PT	0.2	0.3	0.4	0.3	0.6	1.1	1.3	1.4	1.4	1.0	0.5	0.3	0.7
Ilam
RMSE
HS	0.2	0.3	0.5	0.6	1.0	1.3	1.4	1.3	1.1	0.7	0.3	0.2	0.7
PT	0.3	0.3	0.5	0.6	1.3	2.0	2.3	2.4	2.0	1.4	0.7	0.4	1.2
MAE
HS	10	16	17	14	16.7	19	19	19	19	21	15	10	16
PT	24	18	16	15	29.2	38	43	52	57	56	48	36	36
MBE
HS	0.1	0.2	0.4	0.4	0.7	1.0	1.0	1.0	0.8	0.5	0.1	0.0	0.5
PT	0.2	0.2	0.3	0.5	1.1	1.8	2.0	2.2	1.9	1.2	0.6	0.3	1.0

Indices	January	February	March	April	May	June	July	August	September	October	November	December	ANN
Kermanshah
RMSE
HS	0.2	0.2	0.4	0.4	0.8	1.0	1.2	0.9	0.8	0.5	0.3	0.2	0.6
PT	0.3	0.4	0.6	0.8	1.0	1.9	2.4	2.5	2.2	1.5	0.7	0.4	1.2
MAE
HS	10	10	11	7.6	10.5	8.5	9.9	8.9	11	10	11	11	10
PT	29	26	25	20	22.3	35	45	53	62	65	54	45	40
MBE
HS	0.0	0.1	0.1	0.0	−0.4	0.0	0.0	−0.2	0.0	0.0	−0.1	0.0	−0.1
PT	0.3	0.4	0.6	0.6	0.8	1.7	2.3	2.4	2.1	1.4	0.6	0.4	1.1
Hamedan
RMSE
HS	0.2	0.2	0.4	0.4	0.9	1.3	1.5	1.3	1.0	0.5	0.3	0.2	0.7
PT	0.3	0.3	0.6	0.9	1.2	1.9	2.7	2.8	2.0	1.3	0.7	0.4	1.3
MAE
HS	20	18	14	9.3	14.5	13	15	15	14	10	15	16	14
PT	26	20	26	28	27.2	38	54	64	63	66	57	48	43
MBE
HS	0.1	0.1	0.1	0.1	−0.2	0.0	0.2	0.3	0.0	0.1	0.0	0.0	0.1
PT	0.2	0.2	0.5	0.8	0.8	1.7	2.5	2.6	1.9	1.2	0.6	0.3	1.1
Sanandaj
RMSE
HS	0.2	0.2	0.3	0.4	0.8	1.1	1.4	1.2	0.9	0.5	0.3	0.2	0.6
PT	0.2	0.2	0.5	0.7	0.9	1.4	1.9	1.9	1.6	1.1	0.5	0.4	0.9
MAE
HS	12	10	10	8.7	11.4	11	13	13	12	12	15	14	12
PT	19	16	17	18	19.1	26	35	41	46	51	40	40	31
MBE
HS	0.0	0.0	0.0	0.0	−0.5	0.0	0.0	−0.6	0.0	0.0	−0.2	0.0	−0.3
PT	0.1	0.1	0.3	0.5	0.6	1.2	1.8	1.7	1.5	1.0	0.4	0.3	0.8
Khorramabad
RMSE
HS	0.3	0.4	0.5	0.9	1.4	2.3	2.6	2.2	1.5	0.9	0.5	0.4	1.2
PT	0.3	0.4	0.6	0.7	1.0	1.5	1.7	1.8	1.8	1.2	0.7	0.5	1.0
MAE
HS	18	17	15	18	20.3	25	25	23	22	20	20	22	20
PT	25	22	22	18	23.2	27	31	37	49	51	42	36	32
MBE
HS	0.0	0.0	−0.3	−1	−1.1	−2	−2	−1.6	−1	0.0	−0.4	0.0	−0.8
PT	0.2	0.3	0.4	0.3	0.6	1.1	1.3	1.4	1.4	1.0	0.5	0.3	0.7
Ilam
RMSE
HS	0.2	0.3	0.5	0.6	1.0	1.3	1.4	1.3	1.1	0.7	0.3	0.2	0.7
PT	0.3	0.3	0.5	0.6	1.3	2.0	2.3	2.4	2.0	1.4	0.7	0.4	1.2
MAE
HS	10	16	17	14	16.7	19	19	19	19	21	15	10	16
PT	24	18	16	15	29.2	38	43	52	57	56	48	36	36
MBE
HS	0.1	0.2	0.4	0.4	0.7	1.0	1.0	1.0	0.8	0.5	0.1	0.0	0.5
PT	0.2	0.2	0.3	0.5	1.1	1.8	2.0	2.2	1.9	1.2	0.6	0.3	1.0

Sharing Unavailable