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Estimating the evaporative cooling effect of irrigation within and above soybean canopy
- 1.0555128 - ÚVGZ 2023 RIV CH eng J - Journal Article
Ghafarian, F. - Wieland, R. - Nendel, Claas
Estimating the evaporative cooling effect of irrigation within and above soybean canopy.
Water. Roč. 14, č. 3 (2022), č. článku 319. E-ISSN 2073-4441
Institutional support: RVO:86652079
Keywords : climate-change * temperature * impact * canopy cooling effects * shading cooling * canopy-air temperature * energy balance * the Penman-Monteith equation
OECD category: Climatic research
Impact factor: 3.4, year: 2022
Method of publishing: Open access
https://www.mdpi.com/2073-4441/14/3/319
Vegetation with an adequate supply of water might contribute to cooling the land surface around it through the latent heat flux of transpiration. This study investigates the potential estimation of evaporative cooling at plot scale, using soybean as example. Some of the plants' physiological parameters were monitored and sampled at weekly intervals. A physics-based model was then applied to estimate the irrigation-induced cooling effect within and above the canopy during the middle and late season of the soybean growth period. We then examined the results of the temperature changes at a temporal resolution of ten minutes between every two irrigation rounds. During the middle and late season of growth, the cooling effects caused by evapotranspiration within and above the canopy were, on average, 4.4 K and 2.9 K, respectively. We used quality indicators such as R-squared (R-2) and mean absolute error (MAE) to evaluate the performance of the model simulation. The performance of the model in this study was better above the canopy (R-2 = 0.98, MAE = 0.3 K) than below (R-2 = 0.87, MAE = 0.9 K) due to the predefined thermodynamic condition used to estimate evaporative cooling. Moreover, the study revealed that canopy cooling contributes to mitigating heat stress conditions during the middle and late seasons of crop growth.
Permanent Link: http://hdl.handle.net/11104/0330448
File Download Size Commentary Version Access Ghafarian-2022-Estimating-the-evaporative-cooling-.pdf 7 2.7 MB Publisher’s postprint open-access
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