气候变化领域集成服务门户(CCPortal): A novel solution for outlier removal of ICESat altimetry data: a case study in the Yili watershed, China

CCPortal

DOI	10.1007/s11707-013-0362-2
	A novel solution for outlier removal of ICESat altimetry data: a case study in the Yili watershed, China
	Huang, Xiaodong; Xie, Hongjie; Zhang, Guoqing; Liang, Tiangang
通讯作者	Xie, HJ (通讯作者)
发表日期	2013
ISSN	2095-0195
EISSN	2095-0209
起始页码	217
结束页码	226
卷号	7 期号:2
英文摘要	Due to the influence of cloud and saturated waveforms, ICESat data contain many contaminated elevation data that cannot be directly used in examining surface elevation and change. This study provides a novel solution for removing bad data and getting clean ICESat data for land applications by using threshold values of reflectivity, saturation, and gain directly from ICESat's GLAS (Geoscience Laser Alteimeter System) 01, 05, and 06 products. It is found that each laser campaign needs different threshold compositions to assure qualified ICESat data and that bad data removal rates range from 9.6% (laser 2A) to 62.3% (laser 2B) for the test area in the Yili watershed, China. These thresholds would possibly be used in other regions to extract qualified ICESat footprints for land applications. However, it is recommended to use the steps proposed here to further examine the transferability of threshold values for other regions of different elevations and climate regimes. As an example, the resulting ICESat data are applied to examine lake level changes of two lakes in the study area.
关键词	ARCTIC SEA-ICE VERTICAL ERROR C-BAND SRTM VERIFICATION GLACIERS
英文关键词	ICESat; outliers and removal; Yili watershed; lake level
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000318504900010
来源期刊	FRONTIERS OF EARTH SCIENCE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258176
推荐引用方式 GB/T 7714	Huang, Xiaodong,Xie, Hongjie,Zhang, Guoqing,et al. A novel solution for outlier removal of ICESat altimetry data: a case study in the Yili watershed, China[J]. 中国科学院青藏高原研究所,2013,7(2).
APA	Huang, Xiaodong,Xie, Hongjie,Zhang, Guoqing,&Liang, Tiangang.(2013).A novel solution for outlier removal of ICESat altimetry data: a case study in the Yili watershed, China.FRONTIERS OF EARTH SCIENCE,7(2).
MLA	Huang, Xiaodong,et al."A novel solution for outlier removal of ICESat altimetry data: a case study in the Yili watershed, China".FRONTIERS OF EARTH SCIENCE 7.2(2013).