气候变化领域集成服务门户(CCPortal): COMPARATIVE ANALYSIS OF PCA AND ICA ON TREND ESTIMATION OF SEA-LEVEL CHANGE FROM TIDE GAUGE OBSERVATIONS

CCPortal

DOI	10.13168/AGG.2024.0007
	COMPARATIVE ANALYSIS OF PCA AND ICA ON TREND ESTIMATION OF SEA-LEVEL CHANGE FROM TIDE GAUGE OBSERVATIONS
	Wang, Jie; He, Xiaoxing; Hu, Shunqiang; Sun, Xiwen; Wang, Wentao; Liu, Huijuan
发表日期	2024
ISSN	1214-9705
起始页码	21
结束页码	1
卷号	21 期号:1
英文摘要	Sea -level rise directly caused by climate change is impacting coasts around the world and lowlying islands, requiring a continuous accurate monitoring. We analyze the sea -level data observed by 20 tide gauges located in the east coast of the United States of America (USA) over the period January 1972 to December 2021 by using an open -source toolbox SLR_APP. After mitigating noise using Principal Component Analysis (PCA) and Independent Component Analysis (ICA) method, we estimate the trend change and its uncertainty of sea -level considering the stochastic noise properties of the observations. The sea -level estimates and associated uncertainty are smaller than the raw observations after the noise reduction. Our results show that: the average values of the absolute trend change are 1.51 % and 0.82 %, and the mean trend uncertainty are reduced by 44.78 % and 21.26 % after PCA and ICA noise reduction, respectively. We conclude that PCA method performs better than ICA especially in reducing the associated trend uncertainty of the sea level change. Improving the sea -level rise estimation and prediction contribute globally to enhance public safety, in particular for the coastal communities.
英文关键词	Tide Gauge; Sea-Level Change; Trend Estimation; Stochastic Noise; PCA; ICA
语种	英语
WOS研究方向	Geochemistry & Geophysics ; Mining & Mineral Processing
WOS类目	Geochemistry & Geophysics ; Mining & Mineral Processing
WOS记录号	WOS:001207146300006
来源期刊	ACTA GEODYNAMICA ET GEOMATERIALIA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/294693
作者单位	Jiangxi University of Science & Technology; Jiangxi Normal University; East China University of Technology
推荐引用方式 GB/T 7714	Wang, Jie,He, Xiaoxing,Hu, Shunqiang,et al. COMPARATIVE ANALYSIS OF PCA AND ICA ON TREND ESTIMATION OF SEA-LEVEL CHANGE FROM TIDE GAUGE OBSERVATIONS[J],2024,21(1).
APA	Wang, Jie,He, Xiaoxing,Hu, Shunqiang,Sun, Xiwen,Wang, Wentao,&Liu, Huijuan.(2024).COMPARATIVE ANALYSIS OF PCA AND ICA ON TREND ESTIMATION OF SEA-LEVEL CHANGE FROM TIDE GAUGE OBSERVATIONS.ACTA GEODYNAMICA ET GEOMATERIALIA,21(1).
MLA	Wang, Jie,et al."COMPARATIVE ANALYSIS OF PCA AND ICA ON TREND ESTIMATION OF SEA-LEVEL CHANGE FROM TIDE GAUGE OBSERVATIONS".ACTA GEODYNAMICA ET GEOMATERIALIA 21.1(2024).