An Empirical Method of Estimating Soil Thermal Inertia
文献类型：SCI/SSCI论文
| 作者 | Tian J.; Su, H. B.; He, H. L.; Sun, X. M. |
| 发表日期 | 2015 |
| 关键词 | heat-flux net-radiation moisture surface |
| 英文摘要 | A method of estimating soil thermal inertia (STI), which uses midday soil heat flux (G(m)) and diurnal surface temperature amplitude as the inputs, is presented in the paper G(m) is achieved from an empirical relationship between net radiation (Rn) and soil heat flux (G). To validate the STI method, a method proposed by Verhoef, which requires STI and a Fourier series analysis on surface temperature, is used to estimate diurnal G. By comparing diurnal G estimates and diurnal G. measurements, the STI method is evaluated indirectly. The results show that the diurnal curve of G estimates can coincide with that of G measurements for bare soil, with the correlation coefficient (R-2) of 0.64, bias of 10. W.m(-2), and root mean squared errors (RMSE) of 40.9 W.m(-2) for the vegetated surface, R-2 is 0.56, bias is -11.9 W.m(-2), and RMSE is 49.2 W.m(-2). The large uncertainty in the estimation of G(m) resulting from the wider variation of the empirical relationship between Rn and G and the difference between mixed surface temperature and soil surface temperature may be the two primary factors for the larger deviation of the diurnal shape and the magnitude between G estimates and G measurements for the vegetated surface. |
| 出处 | Advances in Meteorology |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1687-9309 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38880]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Tian J.,Su, H. B.,He, H. L.,et al. An Empirical Method of Estimating Soil Thermal Inertia. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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