caa a22 4500 605471843 CHVBK 20210128100335.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s00382-014-2377-0 doi (NATIONALLICENCE)springer-10.1007/s00382-014-2377-0 Robustness of the modes of Indo-Pacific sea level variability [Elektronische Daten] [Leela Frankcombe, Shayne McGregor, Matthew England] This study evaluates the influence of various climate modes on sea level. The altimetry record has excellent spatial coverage but the limited length becomes an issue when evaluating low frequency variability in the presence of a trend. We use altimetry along with two ocean models to study how the relationship between sea surface height (SSH) in the Indian and Pacific Oceans and four climate modes [the Pacific Decadal Oscillation (PDO), the El Niño-Southern Oscillation, the Indian Ocean Dipole and the Southern Annular Mode] depends on the length of the time series. For low frequency variability such as the PDO, a time series on the order of 50years in length is required to separate variability from the trend. Using shorter time series results in aliasing of the SSH trend and low frequency variability, which has implications for ascertaining the role of the PDO in the SSH trends. We find that the regression of SSH on to the PDO during the altimetry period, which is thought to have been responsible for a large fraction of the recent western Pacific SSH trend, is not representative of the SSH-PDO relationship in the longer-term record. Springer-Verlag Berlin Heidelberg, 2014 Sea level variability nationallicence Decadal variability nationallicence Multidecadal variability nationallicence Pacific Decadal Oscillation nationallicence Indian Ocean Dipole nationallicence El Nino Southern Oscillation nationallicence Frankcombe Leela ARC Centre of Excellence for Climate System Science and Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia aut McGregor Shayne ARC Centre of Excellence for Climate System Science and Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia aut England Matthew ARC Centre of Excellence for Climate System Science and Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia aut Climate Dynamics Springer Berlin Heidelberg 45/5-6(2015-09-01), 1281-1298 0930-7575 45:5-6<1281 2015 45 382 https://doi.org/10.1007/s00382-014-2377-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00382-014-2377-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Frankcombe Leela ARC Centre of Excellence for Climate System Science and Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia aut NATIONALLICENCE 700 1- McGregor Shayne ARC Centre of Excellence for Climate System Science and Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia aut NATIONALLICENCE 700 1- England Matthew ARC Centre of Excellence for Climate System Science and Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia aut NATIONALLICENCE 773 0- Climate Dynamics Springer Berlin Heidelberg 45/5-6(2015-09-01), 1281-1298 0930-7575 45:5-6<1281 2015 45 382