CU Sea Level Research Group

University of Colorado
  • Global Mean Sea Level
  • Regional Sea Level
  • Trend Map
  • Interactive Wizard
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  • Tide Gauge Sea Level
  • Steric Effects
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  • 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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DAAC, NASA Physical Oceanography. Jason-1 Altimeter GDR-C., 2011. Abstract
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Vincent, P., S. Desai, J. Dorandeu, M. Ablain, B. Soussi, P. Callahan, and B. J. Haines. "Jason-1 Geophysical Performance EvaluationSpecial Issue: Jason-1 Calibration/Validation." Marine Geodesy 26, no. 3 (2003): 167. Abstract
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Dorandeu, J., M. Ablain, Y. Faugère, F. Mertz, B. Soussi, and P. Vincent. "Jason-1 global statistical evaluation and performance assessment: Calibration and cross-calibration results." Marine Geodesy 27, no. 3 (2004): 345. Abstract
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CLS/CNES. Jason-2 Altimeter GDR-D., 2012. Abstract
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CLS/CNES. Jason-2 Altimeter GDR-T., 2011. 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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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
  • Antarctic contribution to sea-level rise observed by GRACE with improved GIA correction
  • Satellite-derived interannual ocean bottom pressure variability and its relation to sea level
  • Future sea-level rise from Greenland’s main outlet glaciers in a warming climate
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Climate Science News

  • Updating the sea ice baseline
  • Saral: data access open to all users for OGDRs and IGDRs products on June 20th, 2013
  • Strong swell in French Polynesia on June 2013
  • Saral also provides promising results over the Amazon river
  • Un-baked Alaska
more

AVISO Altimetry News

  • Spot-4: end of life and desorbitation planned for June 24th 2013
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