Sensing snow height and surface temperature variations in Greenland from GPS reflected signals
文献类型：期刊论文
| 作者 | Jin, Shuanggen1 ; Najibi, Nasser1,2
|
| 刊名 | ADVANCES IN SPACE RESEARCH
 |
| 出版日期 | 2014-06-01 |
| 卷号 | 53期号:11页码:1623-1633 |
| 关键词 | GPS-L4 Snow surface temperature Snow height Nonparametric bootstrapping model |
| 英文摘要 | The in situ measurements of snow surface temperature (SST) and snow height (SH) are very difficult with high costs, particularly in Greenland Ice Sheet (GrIS). Since the snow depth variations coupling with surface temperature are related to GPS multipath, it is possible to estimate the snow depth and surface air temperature variations by incorporating GPS-Reflectometry (GPS-R). In this paper, the reflected signals from ground GPS receivers are used to sense the SST and SH variations based on the thermophysical behavior and variations of snow layer from April to June 2010 at SMM1 site and from March to December 2010 at MARG site in Greenland. The results show that the mean daily changes in the ionospheric geometrical-free linear combination (GPS-L4) of dual-frequency GPS signals are related to daily SST and SH variations. The nonparametric bootstrapping model in direct (forward) and inverse models are developed and applied to estimate the SST and SH variations. The mean biases of SST and SH estimates are 0.18 degrees C and 0.23 m at SMM1 site, respectively, and 3.8 degrees C and 0.13 m at MARG site, respectively. (C) 2014 COSPAR. Published by Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences |
| 研究领域[WOS] | Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences |
| 关键词[WOS] | ICE-SHEET ; REFLECTOMETRY ; SYSTEM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000336771300009 |
| 源URL | [http://119.78.226.72/handle/331011/16210]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jin, Shuanggen,Najibi, Nasser. Sensing snow height and surface temperature variations in Greenland from GPS reflected signals[J]. ADVANCES IN SPACE RESEARCH,2014,53(11):1623-1633. |
| APA | Jin, Shuanggen,&Najibi, Nasser.(2014).Sensing snow height and surface temperature variations in Greenland from GPS reflected signals.ADVANCES IN SPACE RESEARCH,53(11),1623-1633. |
| MLA | Jin, Shuanggen,et al."Sensing snow height and surface temperature variations in Greenland from GPS reflected signals".ADVANCES IN SPACE RESEARCH 53.11(2014):1623-1633. |
入库方式： OAI收割
来源：上海天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。