CU Sea Level Research Group

University of Colorado
  • Global Mean Sea Level
  • Regional Sea Level
  • Trend Map
  • Interactive Wizard
  • Processing
  • Tide Gauge Sea Level
  • Steric Effects
  • References
  • FAQ
  • Links
  • Contact
  • Global Mean Sea Level
  • Regional Sea Level
  • Trend Map
  • Interactive Wizard
  • Processing
    • Monitoring Altimeter Drift
    • Release Notes
  • Tide Gauge Sea Level
  • Steric Effects
  • References
  • FAQ
  • Links
  • Contact

GMSL Rates

CU: 3.2 ± 0.4 mm/yr
AVISO: 3.2 ± 0.6 mm/yr
CSIRO: 3.2 ± 0.4 mm/yr
NOAA: 3.2 ± 0.4 mm/yr (w/ GIA)
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Frequent Questions

  • What is the format of the dates in the GMSL time series?
  • Do you account for plate tectonics in the global mean sea level trend?
  • Is sedimentation in the oceans accounted for in the GMSL estimate?
  • What determines the x-intercept (i.e., "zero-crossing" or "base year") of the GMSL plots?
  • Why is the GMSL different than local tide gauge measurements?
All FAQs

Sea Level Links

  • AVISO
  • CLS Radar Altimetry Tutorial
  • CSIRO
  • GFZ GRACE
  • Global Sea Level Observing System (GLOSS)
  • JPL GRACE Tellus
  • JPL Ocean Surface Topography
  • LEGOS-CTOH
  • NASA EO: World of Change
  • NASA Global Climate Change
  • NOAA Satellite Altimetry
  • Permanent Service for Mean Sea Level (PSMSL)
  • Radar Altimeter Database (RADS)
  • USF Grace Ocean Mass
  • UT/CSR GRACE

CU Sea Level Library

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sea_level
Cazenave, A., K. Dominh, F. Ponchaut, L. Soudarin, J. - F. Crétaux, and C. L. Provost. "Sea level changes from Topex-Poseidon altimetry and tide gauges, and vertical crustal motions from DORIS." Geophysical Research Letters 26 (1999): 2077-2080. Abstract
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tide_gauge
Cazenave, A., K. Dominh, F. Ponchaut, L. Soudarin, J. - F. Crétaux, and C. L. Provost. "Sea level changes from Topex-Poseidon altimetry and tide gauges, and vertical crustal motions from DORIS." Geophysical Research Letters 26 (1999): 2077-2080. Abstract
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topex
Cazenave, A., K. Dominh, F. Ponchaut, L. Soudarin, J. - F. Crétaux, and C. L. Provost. "Sea level changes from Topex-Poseidon altimetry and tide gauges, and vertical crustal motions from DORIS." Geophysical Research Letters 26 (1999): 2077-2080. Abstract
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CU Sea Level Blog

  • New GMSL release and Jason-2 Switch to Side-B
  • Senate Committee Hearing on Impacts of Rising Sea Levels on Domestic Infrastructures
  • NASA mission takes stock of Earth's melting land ice
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more

Our Publications

  • The 2011 La Niña: So strong, the oceans fell
  • Is there a 60-year oscillation in global mean sea level?
  • Comparison of Global Mean Sea Level Time Series from TOPEX/Poseidon, Jason-1, and Jason-2
  • Reconstructing sea level using cyclostationary empirical orthogonal functions
more

Recent Sea Level Articles

  • Time-variable gravity observations of ice sheet mass balance: precision and limitations of the GRACE satellite data
  • Mixed layer heat budget of the El Niño in NCEP climate forecast system
  • Comparison of the X-TRACK altimetry estimated currents with moored ADCP and HF radar observations on the West Florida Shelf
  • A demonstration of the potential of Cryosat-2 to contribute to mesoscale observation
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Climate Science News

  • April on average
  • Spring has sprung in the Arctic
  • Annual maximum extent reached
  • A fractured winter
  • Salty news from the Gulf Stream
more
We would like to thank JPL and G. Kruizinga for providing the altimetry database software. This work was funded by the NASA under a OSTM/Jason science investigation.

Colorado Center for Astrodynamics Research at the University of Colorado at Boulder