Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094852 |
A new unconstrained approach to GNSS atmospheric water vapor tomography | |
P. M. A Miranda; P. Mateus | |
2021-08-18 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | A new atmospheric tomographic model totally based on Global Navigation Satellite System (GNSS) observations is proposed and tested against field observations. The method does not require a first guess, does not contain specific constraints on the variability of water vapor density inside the tomographic domain, and is able to produce reasonable results at 6 km horizontal and 500 m vertical resolutions, from short (30 min) GNSS data samples. The inversion method uses the Moore-Penrose pseudoinverse, which is made possible by increasing the rank of the design matrix through angular interpolation and extrapolation of the observations. Comparisons against 30 consecutive 4-h radiosonde observations and model simulations suggest the ability of the method to detect inversions and local maxima aloft, and behave sensibly in the far-field. Further improvements from this method may be expected from higher density and multi-constellation networks. |
领域 | 气候变化 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/335964 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | P. M. A Miranda,P. Mateus. A new unconstrained approach to GNSS atmospheric water vapor tomography[J]. Geophysical Research Letters,2021. |
APA | P. M. A Miranda,&P. Mateus.(2021).A new unconstrained approach to GNSS atmospheric water vapor tomography.Geophysical Research Letters. |
MLA | P. M. A Miranda,et al."A new unconstrained approach to GNSS atmospheric water vapor tomography".Geophysical Research Letters (2021). |
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