气候变化领域集成服务门户(CCPortal): Climate Variability Impacts on Global Extreme Wave Heights: Seasonal Assessment Using Satellite Data and ERA5 Reanalysis

CCPortal

DOI	10.1029/2020JC016754
	Climate Variability Impacts on Global Extreme Wave Heights: Seasonal Assessment Using Satellite Data and ERA5 Reanalysis
	Patra A.; Min S.-K.; Seong M.-G.
发表日期	2020
ISSN	21699275
卷号	125 期号:12
英文摘要	This study examines the influences of major climate variability modes on global extreme significant wave height (SWH) during 1992–2016 using merged satellite altimeter records and ERA5 reanalysis data set. El Niño-Southern Oscillation (ENSO), North Atlantic Oscillation (NAO), North Pacific Oscillation (NPO), and Southern Annular mode (SAM) are considered during December–February (DJF), March–May (MAM), June–August (JJA), and September–November (SON). A nonstationary generalized extreme value analysis is applied to seasonal maxima of SWH (Hmax) to identify the regions with significant impacts of climate variability. In addition to major impacts over the northeastern North Pacific (NP) and Maritime Continent during DJF, signature of ENSO in Hmax is observed over the southeast South Pacific during all seasons associated with the Pacific South America pattern and over the western NP during JJA and SON through the El Niño-East Asian teleconnection mechanism. Notable contribution of NAO to North Atlantic Hmax, resulting from north-south movement of storm track, is observed during DJF and MAM. Increased Hmax is concentrated around the northeast NP during the positive phase of NPO during DJF, which accompanies Aleutian low strengthening and suggests possible combined influence with ENSO. SAM influences on Hmax are characterized by a zonal pattern in the Southern mid- and high latitudes around the year, with seasonally distinct zonal extent and meridional shifts. Overall, the satellite and reanalysis data exhibit consistent results. Hmax responses are generally in accord with extreme wind and sea-level pressure gradient amplitude, supporting the wind-driven extreme wave mechanisms. © 2020. American Geophysical Union. All Rights Reserved.
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/186537
作者单位	Division of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk, South Korea
推荐引用方式 GB/T 7714	Patra A.,Min S.-K.,Seong M.-G.. Climate Variability Impacts on Global Extreme Wave Heights: Seasonal Assessment Using Satellite Data and ERA5 Reanalysis[J],2020,125(12).
APA	Patra A.,Min S.-K.,&Seong M.-G..(2020).Climate Variability Impacts on Global Extreme Wave Heights: Seasonal Assessment Using Satellite Data and ERA5 Reanalysis.Journal of Geophysical Research: Oceans,125(12).
MLA	Patra A.,et al."Climate Variability Impacts on Global Extreme Wave Heights: Seasonal Assessment Using Satellite Data and ERA5 Reanalysis".Journal of Geophysical Research: Oceans 125.12(2020).