EVALUATION OF COUP MODEL SIMULATION OF SOIL MOISTURE AND TEMPERATURE UNDER MAIZE CANOPY AND BARE SOIL

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NOROOZVALASHEDI R.; GHAHRAMAN N.; IRANNEJAD P.

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Journal: Iranian Journal of Soil Research Year:2012 | Volume:26 | Issue:1 Page(s): 55-66

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Title

EVALUATION OF COUP MODEL SIMULATION OF SOIL MOISTURE AND TEMPERATURE UNDER MAIZE CANOPY AND BARE SOIL

Author(s)

NOROOZVALASHEDI R. | GHAHRAMAN N. | IRANNEJAD P. | Issue Writer Certificate

Keywords

SIMULATION MODELQ2

ROOT DEPTHQ2

SOIL ANALYSISQ1

KARAJQ2

Abstract

Because of the scarcity of in situ measurements, simulations of soil moisture and temperature are very important for irrigation management and scheduling and evapotranspiration estimation in different field conditions. This paper aims at evaluating the efficiency of the COUP model in simulating soil temperature and moisture dynamics in two plots under maize canopy and with no vegetation cover in KARAJ climate. Soil physical parameters, estimated based on the SOIL ANALYSIS (soil texture, bulk density), and daily meteorological parameters (including maximum and minimum temperature, wind speed, pan evaporation, sunshine hours and rainfall) and cropdata (crop height, ROOT DEPTH, and leaf area index) were used to run the model over the growing period. Soil temperature was measured using standard soil thermometers at depths of 10, 30, 50 and 70 cm and soil moisture was measured by means of a theta probe installed at the same depths. Statistical criteria were used to compare the simulated soil temperature and moisture with those observed. Results showed that the COUP model was highly efficient in simulating soil temperature. The simulated soil moisture was comparable with observations. However, the model was less skillful in simulating soil moisture than temperature. Further scrutiny is needed to assess the possible reasons for this discrepancy.

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APA: Copy

NOROOZVALASHEDI, R., GHAHRAMAN, N., & IRANNEJAD, P.. (2012). EVALUATION OF COUP MODEL SIMULATION OF SOIL MOISTURE AND TEMPERATURE UNDER MAIZE CANOPY AND BARE SOIL. IRANIAN JOURNAL OF SOIL RESEARCH (FORMERLY SOIL AND WATER SCIENCES), 26(1), 55-66. SID. https://sid.ir/paper/159083/en

Vancouver: Copy

NOROOZVALASHEDI R., GHAHRAMAN N., IRANNEJAD P.. EVALUATION OF COUP MODEL SIMULATION OF SOIL MOISTURE AND TEMPERATURE UNDER MAIZE CANOPY AND BARE SOIL. IRANIAN JOURNAL OF SOIL RESEARCH (FORMERLY SOIL AND WATER SCIENCES)[Internet]. 2012;26(1):55-66. Available from: https://sid.ir/paper/159083/en

IEEE: Copy

R. NOROOZVALASHEDI, N. GHAHRAMAN, and P. IRANNEJAD, “EVALUATION OF COUP MODEL SIMULATION OF SOIL MOISTURE AND TEMPERATURE UNDER MAIZE CANOPY AND BARE SOIL,” IRANIAN JOURNAL OF SOIL RESEARCH (FORMERLY SOIL AND WATER SCIENCES), vol. 26, no. 1, pp. 55–66, 2012, [Online]. Available: https://sid.ir/paper/159083/en

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