L-Band Microwave Emission of Soil Freeze-Thaw Process in the Third Pole Environment
文献类型：期刊论文
| 作者 | Zheng, Donghai1; Wang, Xin2; van der Velde, Rogier1; Zeng, Yijian1; Wen, Jun3; Wang, Zuoliang2; Schwank, Mike4; Ferrazzoli, Paolo5; Su, Zhongbo1 |
| 刊名 | IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
 |
| 出版日期 | 2017-09-01 |
| 卷号 | 55期号:9页码:5324-5338 |
| 关键词 | L-band microwave radiometry Noah land surface model (LSM) Soil Moisture and Ocean Salinity (SMOS)/Soil Moisture Active Passive (SMAP) soil freeze/thaw (F/T) Tibetan Plateau Tor Vergata model |
| ISSN号 | 0196-2892 |
| DOI | 10.1109/TGRS.2017.2705248 |
| 通讯作者 | Zheng, Donghai(d.zheng@utwente.nl) |
| 英文摘要 | Soil freeze-thaw transition monitoring is essential for quantifying climate change and hydrologic dynamics over cold regions, for instance, the Third Pole. We investigate the L-band (1.4 GHz) microwave emission characteristics of soil freeze-thaw cycle via analysis of tower-based brightness temperature (T-B(p)) measurements in combination with simulations performed by a model of soil microwave emission considering vertical variations of permittivity and temperature. Vegetation effects are modeled using Tor Vergata discrete emission model. The ELBARA-III radiometer is installed in a seasonally frozen Tibetan grassland site to measure diurnal cycles of L-band T-B(p) every 30 min, and supporting micrometeorological as well as volumetric soil moisture (theta) and temperature profile measurements are also conducted. Soil freezing/thawing phases are clearly distinguished by using T-B(p) measurements at two polarizations, and further analyses show that: 1) the four-phase dielectric mixing model is appropriate for estimating permittivity of frozen soil; 2) the soil effective temperature is well comparable with the temperature at 25 cm depth when soil liquid water is freezing, while it is closer to the one measured at 5 cm when soil ice is thawing; and 3) the impact on T-B(p) caused by diurnal changes of ground permittivity is dominating the impact of changing ground temperature. Moreover, the simulations performed with the integrated Tor Vergata emission model and Noah land surface model indicate that the T-B(p) signatures of diurnal soil freeze-thaw cycle is more sensitive to the liquid water content of the soil surface layer than the in situ measurements taken at 5 cm depth. |
| 收录类别 | SCI |
| WOS关键词 | NOAH MODEL PHYSICS ; TIBETAN PLATEAU ; SCATTERING MODEL ; WATER-CONTENT ; BARE SOIL ; MOISTURE ; SATELLITE ; FROZEN ; TEMPERATURE ; PARAMETERIZATION |
| WOS研究方向 | Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS类目 | Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000408346600040 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557677 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zheng, Donghai |
| 作者单位 | 1.Univ Twente, Fac Geoinformat Sci & Earth Observat, NL-7522 NB Enschede, Netherlands 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Gansu, Peoples R China 3.Chengdu Univ Informat Technol, Coll Atmospher Sci, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu 610225, Peoples R China 4.Birmensdorf & Gamma Remote Sensing AG, Swiss Fed Res Inst WSL, CH-3073 Gumlingen, Switzerland 5.Univ Roma Tor Vergata, Dipartimento Ingn Civile & Ingn Informat, Via Politecn, I-00133 Rome, Italy |
| 推荐引用方式 GB/T 7714 | Zheng, Donghai,Wang, Xin,van der Velde, Rogier,et al. L-Band Microwave Emission of Soil Freeze-Thaw Process in the Third Pole Environment[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,2017,55(9):5324-5338. |
| APA | Zheng, Donghai.,Wang, Xin.,van der Velde, Rogier.,Zeng, Yijian.,Wen, Jun.,...&Su, Zhongbo.(2017).L-Band Microwave Emission of Soil Freeze-Thaw Process in the Third Pole Environment.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,55(9),5324-5338. |
| MLA | Zheng, Donghai,et al."L-Band Microwave Emission of Soil Freeze-Thaw Process in the Third Pole Environment".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 55.9(2017):5324-5338. |
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来源：寒区旱区环境与工程研究所
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