Soil temperature estimation with the harmonic method is affected by thermal diffusivity parameterization
Soil temperature estimation with the harmonic method is affected by thermal diffusivity parameterization
复制标题
使用谐波方法估算土壤温度受热扩散率参数化的影响
DOI：
10.1016/j.geoderma.2019.06.029
复制
发表时间：
2019-11
期刊：
影响因子：
6.1
通讯作者：
Horton Robert
中科院分区：
文献类型：
--
作者：
Xie Xiaoting;Lu Yili;Ren Tusheng;Horton Robert
Information on soil thermal properties is needed for estimating soil temperature (T) and heat flux. However, few datasets are available for assessing the effects of soil thermal diffusivity (κ) parameterization on diurnalTestimations. In this study, three κ parameterization methods, all based on soil physical properties, are compared for determining the responses ofΤestimation to κ on two field soils. Among the three methods, two are the combination of the de Vries heat capacity model with either the McCumber and Pielke thermal conductivity model (MP-D) or the Johansen thermal conductivity model (J75-D), and the other one is the Xie et al. κ model (X18). The harmonic approach was used to estimateTin the 0- to 5-cm layer on a sandy loam soil, and in the 5- to 10-cm layer on a silty clay loam soil from the measuredTdata at a single depth. The J75-D and X18 methods produced close κ values, while the κ values from the MP-D method deviated significantly from that of other models. TheTresults from the J75-D and X18 based harmonic methods agreed well withTmeasurements. On the sandy loam soil,Testimates from the MP-D method had a RMSE (root mean square error) of 3.04 °C and an RSR (ratio of RMSE to the standard deviation of the observations) of 0.53, while smaller RMSE and RSR values were obtained from the X18 method (1 °C and 0.17) and J75-D method (0.8 °C and 0.14). For the silty clay loam soil, the RMSE and RSR ofTestimates from the MP-D-based harmonic method were 0.82 °C and 0.27, respectively, which were larger than those (0.57 °C and 0.19) of the X18 and J75-D-based harmonic method. We concluded that the X18 and J75-D based harmonic methods could provide more accurate soil profileΤestimates than the MP-D method.
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DOI：
10.21236/ada111734
发表时间：
1981-12
期刊：
bioRxiv
影响因子：
--
作者：
O. Farouki
通讯作者：
O. Farouki
DOI：
10.1016/s0166-2481(08)x7009-6
发表时间：
1985
期刊：
--
影响因子：
--
作者：
G. Campbell
通讯作者：
G. Campbell
DOI：
10.21236/ada044002
发表时间：
1977-07
期刊：
--
影响因子：
--
作者：
O. Johansen
通讯作者：
O. Johansen
影响因子：
--
作者：
G. R. Blake
通讯作者：
G. R. Blake
影响因子：
3
作者：
Jeffrey;-D.;Massey;-W.;James W. Steenburgh;Sebastián;HoCH
通讯作者：
Jeffrey;-D.;Massey;-W.;James W. Steenburgh;Sebastián;HoCH