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Title: Interannual variability in global mean sea level estimated from the CESM Large and Last Millennium Ensembles

Journal Article · · Water (Basel)
DOI:https://doi.org/10.3390/w8110491· OSTI ID:1362291
ORCiD logo [1];  [2]
  1. National Center for Atmospheric Research, Boulder, CO (United States); Univ. of Colorado, Boulder, CO (United States)
  2. Univ. of Colorado, Boulder, CO (United States)

To better understand global mean sea level (GMSL) as an indicator of climate variability and change, contributions to its interannual variation are quantified in the Community Earth System Model (CESM) Large Ensemble and Last Millennium Ensemble. Consistent with expectations, the El Niño/Southern Oscillation (ENSO) is found to exert a strong influence due to variability in rainfall over land (PL) and terrestrial water storage (TWS). Other important contributors include changes in ocean heat content (OHC) and precipitable water (PW). The temporal evolution of individual contributing terms is documented. The magnitude of peak GMSL anomalies associated with ENSO generally are of the order of 0.5 mm·K-1 with significant inter-event variability, with a standard deviation (σ) that is about half as large The results underscore the exceptional rarity of the 2010/2011 La Niña-related GMSL drop and estimate the frequency of such an event to be about only once in every 75 years. In addition to ENSO, major volcanic eruptions are found to be a key driver of interannual variability. Associated GMSL variability contrasts with that of ENSO as TWS and PW anomalies initially offset the drop due to OHC reductions but short-lived relative to them. Furthermore, responses up to 25 mm are estimated for the largest eruptions of the Last Millennium.

Research Organization:
University Corporation for Atmospheric Research, Boulder, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0012711
OSTI ID:
1362291
Journal Information:
Water (Basel), Vol. 8, Issue 12; ISSN 2073-4441
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 25 works
Citation information provided by
Web of Science

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  • Raible, Christoph C.; Brönnimann, Stefan; Auchmann, Renate
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journal June 2016
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Cited By (6)

A method for investigating the relative importance of three components in overall uncertainty of climate projections journal November 2018
Consensuses and discrepancies of basin-scale ocean heat content changes in different ocean analyses journal June 2017
The Dominant Global Modes of Recent Internal Sea Level Variability journal April 2019
The Max Planck Institute Grand Ensemble: Enabling the Exploration of Climate System Variability journal July 2019
Asymmetric Response of Land Storage to ENSO Phase and Duration journal October 2019
Halosteric Sea Level Changes during the Argo Era journal July 2017

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