Modelling Canopy Resistance For Estimating Latent Heat Flux At A Tea Field In South China

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Modelling Canopy Resistance For Estimating Latent Heat Flux At A Tea Field In South China

Journal Article (2017)

Author(s)

H. Yan (TU Delft - Civil Engineering & Geosciences, Yangzhou University)

C. Zhang (Yangzhou University, TU Delft - Civil Engineering & Geosciences)

G. Peng (Yangzhou University)

R.O. Darko (Yangzhou University)

B. Cai (Yangzhou University)

Research Group

Water Resources

DOI related publication

https://doi.org/10.1017/S0014479717000242 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:c0e869e9-8ede-429c-b00b-f4c7e73856de

More Info

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Publication Year

2017

Language

English

Research Group

Water Resources

Issue number

4

Volume number

54

Pages (from-to)

1-14

Downloads counter

130

Abstract

Determination of canopy resistance (r_c ) is necessary for accurate estimating hourly latent heat flux (LET), using the Penman–Monteith (PM) model for tea crop. In this study, a non-linear relationship between r_c and climatic resistance (r*) was obtained for tea plants based on micro-meteorological data and LET from the end of 2014 to the beginning of 2016 in southern China. The proposed r_c model was integrated to the PM method and compared with measured LET using a Bowen ratio energy balance method. The root mean square error (RMSE) and the index of agreement (d) were calculated for assessing the accuracy of the proposed r_c model. RMSE and d values for r_c and LET were 167.4 s m⁻¹ and 29.7 W m⁻² and 0.93 and 0.99, respectively. As compared to data from a single season, the r_c sub-model based on data from different seasons was more reliable for estimating LET of tea field when integrated to the PM model.