| Continuous wavelet transform and discrete multi-resolution analysis of surface fluxes and atmospheric stability | |
| Yu Q. | |
| 2006 | |
| 关键词 | atmospheric stability flux continuous wavelet transform multi-resolution wavelet analysis water-vapor exchange deciduous forest carbon-dioxide boundary-layer model photosynthesis conductance transpiration variables canopy |
| 英文摘要 | Variations of land Surface fluxes of sensible heat ( H), latent heat ( LE), and CO2( F-CO2) obtained from the eddy-covariance measurements above a winter wheat field from March 30 to April 24, 2001 have been studied at scales ranging from 10 minutes to days. Wavelet transform is used in the analysis of land surface fluxes and atmospheric stability () calculated from the measurements to reveal the changes in land Surface fluxes in hours to days scales. The main results are: ( I) Concise and compact information about the fluxes, net radiation (R.), temperature ( T) and in the scale-time domain are extracted from the data by continuous wavelet analysis, and 1 day, 0.5 day and short-period (shorter than 0.5 day) components are revealed. Continuous wavelet coefficients can be used to characterize periodic components of changes in fluxes and. (2) Discrete-time multi-resolution analysis can be used to concentrate total energy variance of time series of the measurements to a small number of coefficients, plotting the relative energy distribution to get several meaningful characteristics of the data. (3) Under neutral atmospheric conditions, the relative energy distribution.,; of the Haar multi-resolution analysis of the three non-dimensional coefficients (T/T*, q/q* and c/c*) display clear similarities. |
| 出处 | Progress in Natural Science |
| 卷 | 16 |
| 期 | 4 |
| 页 | 403-409 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1002-0071 |
| 内容类型 | SCI/SSCI论文 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23742]  |
| 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 | Yu Q.. Continuous wavelet transform and discrete multi-resolution analysis of surface fluxes and atmospheric stability. 2006. |
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