气候变化领域集成服务门户(CCPortal): 20th Century Multivariate Indian Ocean Regional Sea Level Reconstruction

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DOI	10.1029/2020JC016270
	20th Century Multivariate Indian Ocean Regional Sea Level Reconstruction
	Kumar P.; Hamlington B.; Cheon S.-H.; Han W.; Thompson P.
发表日期	2020
ISSN	21699275
卷号	125 期号:10
英文摘要	Despite having some of the world's most densely populated and vulnerable coastlines, Indian Ocean sea level variability over the past century is poorly understood relative to other ocean basins primarily, due to the short and sparse observational records. In an attempt to overcome the limitations imposed by the lack of adequate observations, we have produced a 20th century Indian Ocean sea level reconstruction product using a new multivariate reconstruction technique. This technique uses sea level pressure and sea surface temperature in addition to sea level data to help constrain basin-wide sea level variability by (1) the removal of large spurious signals caused as a result of insufficient tide gauge data specifically during the first half of the 20th century and (2) through its information on large-scale climate modes such as El Niño-Southern Oscillation and Indian Ocean Dipole. Basis functions generated by Cyclostationary Empirical Orthogonal Functions are used for the reconstruction. This new multivariate technique provides improved regional sea level variability estimates along with a longer record length in comparison to existing globally reconstructed sea level data. The biggest advantage of using this multivariate reconstruction technique lies in its ability to reconstruct Indian Ocean sea level for the first half of the 20th century, providing a long sea level record for the study of Indian Ocean internal climate variability. This will enable future studies to help improve the understanding of how sea level trends and variability can be modulated by internal climate variability in the Indian Ocean. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	20th century sea level; Indian ocean; interannual-to-decadal; multivariate reconstruction; sea level
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186610
作者单位	Center for Coastal and Physical Oceanography, Old Dominion University, Norfolk, VA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, United States; Department of Oceanography, University of Hawai'i at Mānoa, Honolulu, HI, United States
推荐引用方式 GB/T 7714	Kumar P.,Hamlington B.,Cheon S.-H.,et al. 20th Century Multivariate Indian Ocean Regional Sea Level Reconstruction[J],2020,125(10).
APA	Kumar P.,Hamlington B.,Cheon S.-H.,Han W.,&Thompson P..(2020).20th Century Multivariate Indian Ocean Regional Sea Level Reconstruction.Journal of Geophysical Research: Oceans,125(10).
MLA	Kumar P.,et al."20th Century Multivariate Indian Ocean Regional Sea Level Reconstruction".Journal of Geophysical Research: Oceans 125.10(2020).