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פותח על ידי קלירמאש פתרונות בע"מ -
Surface Renewal Application for Estimating Evapotranspiration: A Review
Year:
2018
Source of publication :
Authors :
טנאי, יוסף
;
.
Volume :
Co-Authors:

Hu, Y., School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, China;

Buttar, N.A., School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, China;

Snyder, R.L., Atmospheric Science, University of California, DavisCA, United States;

Savage, M.J., Soil-Plant-Atmosphere Continuum Research Unit (SPACRU), Agrometeorology Discipline, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa;

Lakhiar, I.A., School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, China

Facilitators :
From page:
0
To page:
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(
Total pages:
1
)
Abstract:

The estimation of evapotranspiration (ET) is essential for meteorological modeling of surface exchange processes, as well as for the agricultural practice of irrigation management. Hitherto, a number of methods for estimation of ET at different temporal scales and climatic conditions are constantly under investigation and improvement. One of these methods is surface renewal (SR). Therefore, the premise of this review is to present recent developments and applications of SR for ET measurements. The SR method is based on estimating the turbulent exchange of sensible heat flux between plant canopy and atmosphere caused by the instantaneous replacement of air parcels in contact with the surface. Additional measurements of net radiation and soil heat flux facilitate extracting ET using the shortened energy balance equation. The challenge, however, is the calibration of SR results against direct sensible heat flux measurements. For the classical SR method, only air temperature measured at high frequency is required. In addition, a new model suggests that the SR method could be exempted from calibration by measuring additional micrometeorological variables. However, further improvement of the SR method is required to provide improved results in the future. © 2018 Yongguang Hu et al.

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More details
DOI :
https://doi.org/10.1155/2018/1690714
Article number:
0
Affiliations:

School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, China; Institute of Soil Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, P.O. Box 15159, Rishon LeZion, Israel; Holon Institute of Technology (HIT), Holon, Israel; Atmospheric Science, University of California, DavisCA, United States; Soil-Plant-Atmosphere Continuum Research Unit (SPACRU), Agrometeorology Discipline, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa

Database:
סקופוס
Publication Type:
סקירה
;
.
Language:
אנגלית
Editors' remarks:
ID:
36585
Last updated date:
02/03/2022 17:27
Creation date:
14/08/2018 07:59
Scientific Publication
Surface Renewal Application for Estimating Evapotranspiration: A Review

Hu, Y., School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, China;

Buttar, N.A., School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, China;

Snyder, R.L., Atmospheric Science, University of California, DavisCA, United States;

Savage, M.J., Soil-Plant-Atmosphere Continuum Research Unit (SPACRU), Agrometeorology Discipline, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa;

Lakhiar, I.A., School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, China

Surface Renewal Application for Estimating Evapotranspiration: A Review

The estimation of evapotranspiration (ET) is essential for meteorological modeling of surface exchange processes, as well as for the agricultural practice of irrigation management. Hitherto, a number of methods for estimation of ET at different temporal scales and climatic conditions are constantly under investigation and improvement. One of these methods is surface renewal (SR). Therefore, the premise of this review is to present recent developments and applications of SR for ET measurements. The SR method is based on estimating the turbulent exchange of sensible heat flux between plant canopy and atmosphere caused by the instantaneous replacement of air parcels in contact with the surface. Additional measurements of net radiation and soil heat flux facilitate extracting ET using the shortened energy balance equation. The challenge, however, is the calibration of SR results against direct sensible heat flux measurements. For the classical SR method, only air temperature measured at high frequency is required. In addition, a new model suggests that the SR method could be exempted from calibration by measuring additional micrometeorological variables. However, further improvement of the SR method is required to provide improved results in the future. © 2018 Yongguang Hu et al.

Scientific Publication
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