Sensible heat flux of oil palm plantation: Comparing Aerodynamic and Penman-Monteith Methods

3rd International Symposium on LAPAN-IPB Satellite For Food Security and Environmental Monitoring 2016

地球科学;轻工业;生态环境科学

Komarudin, Nurul Amri^1 ; June, Tania^1 ; Meijide, Ana^2

Department of Geophysics and Meteorology, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University (IPB), Kampus IPB Dramaga, FMIPA Building, Wing 19, Bogor, Jalan Raya Dramaga, Jawa Barat

16680, Indonesia^1

CRC990, University of Goettingen, Germany^2

关键词: Aerodynamic methods;    Atmospheric stability;    Morphological characteristic;    Oil palm plantations;    Penman-Monteith method;    Sensible heat flux;    Standard deviation;    Surrounding environment;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/54/1/012007/pdf
DOI  :  10.1088/1755-1315/54/1/012007

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Oil Palm (Elaeis guinensis Jacq) has a unique morphological characteristics, in particular it has a uniform canopy. As the plant become older, its canopy coverage will completely cover the surface and influence characteristics of its microclimate. Sensible heat flux estimation of oil palm plantation could be used to identify the contribution of oil palm in reducing or increasing heat to its surrounding environment. Determination of heat flux from oil palm plantation was conducted using two methods, Aerodynamic and Penman-Monteith. The result shows that the two methods have similar diurnal pattern. The sensible heat flux peaks in the afternoon, both for two and twelve years oil palm plantations. Sensible heat flux of young plantation is affected by atmospheric stability (stable, unstable and neutral), and is higher than that of older plantation, with mean values of 0.52 W/m2(stable), 43.53 W/m2(unstable), 0.63 W/m2(neutral), with standard deviation of 0.50, 28.75 and 0.46 respectively. Sensible heat flux estimated by Penman-Monteith method in both young and older plantation was higher than the value determined by Aerodynamic method with respective value of 0.77 W/m2(stable), 45.13 W/m2(unstable) and 0.63 W/m2(neutral) and 0.34 W/m2(stable), 35.82 W/m2(unstable) and 0.71 W/m2(neutral).