دراسة مقارنة تقدير التبخر نتح باستعمال أنموذج سيبال (SEBAL)‎ و جهاز قياس التبخر (Atmometr)‎ في حوض نهر ديالى

الملخص EN

Satellite images were taken on the following dates, 1/3/2020, 2/4/2020, 23/3/2020, 24/4/2020, 10/5/2020, 11/6/2020 and 7/13/2020 from the web of the USGS to the area of A.

L.

- Muqdadiya District, Diyala river basin, Diyala Governorate within (45˚0′7.268̋ and 44˚ 46′ 0.063̋) east and (34˚8′ 47.475̋ and 33˚56′36.621̋) north.

The total study area was 736, 372 km2, and the area covered with vegetation was 477, 606 km2.

The SEBAL model was wired to estimate evapotranspiration (E.

T.

) for the months of the study, both locally and temporally.

Remote sensing was used based on satellite Landsat-8 images by sensor OLI as radiation data input.

In addition, the meteorological data was used for each date.

28 points were randomly taken within the study area.

Atmometer (ETgage) was used to measure daily evapotranspiration, Also the Penman-Monteith equation (FAO56).

Was used to estimate E.

T.

The results showed a good relationship between E.

T.

, estimated by the SEBAL model and measured with an atmometer (R2 = 0.9508).

Also, good agreement was showed between SEBAL and FAO 56 (R2 = 0.9913) and atmometer and FAO 56 (R2 = 0.9216).

437 Mm3 of water is required to meet the needs of crops, representing the maximum quantity of water for the study period.