1. By John Eiler, University of Wisconsin

    This lecture is part of the The Earth Science Colloquium video series. The Earth Science Colloquium Series is sponsored by the Lamont-Doherty Earth Observatory and the Columbia University Department of Earth and Environmental Sciences (DEES). This series provides a lively forum for discussing a wide variety of topics within the earth sciences and related fields. Colloquia are attended by the full range of scientific and technical staff at LDEO.

    Galen McKinley
    Natural variability and anthropogenic trends in the
    ocean carbon sink
    Abstract
    :
    The ocean removes from the atmosphere approximately 25% of annual anthropogenic CO2 emissions, and thus substantially slows climate change. Distinguishing natural variability in the ocean carbon sink from
    climate-driven feedbacks is critical for diagnosing the state of the global carbon cycle and for understanding the ability of the ocean carbon sink to persist into the future. Based on globally observed surface ocean partial
    pressure of CO2 (pCO2s.ocean), trends in the ocean carbon sink are evaluated over 16 gyre-scale biomes. Trends spanning decadal to multidecadal timescales between 19 81 and 2010 are considered. On decadal timescales, pCO2s.ocean trends are found to be of variable magnitude and quite sensitive the period of analysis. On longer time frames, most biomes display pCO2s.ocean trends parallel to or shallower than trends in atmospheric pCO2. In North Atlantic, long-term warming has become a significant and persistent contributor to the observed increase in pCO2s.ocean throughout the 2000s. This warming is partially anthropogenic; thus, these results are first evidence of a negative feedback from climate change on the ocean carbon sink. This data analysis is complemented by a eddy-permitting North Atlantic model for 1948-2005 that allows us to parse impacts on pCO2s.ocean from anthropogenic warming, the Atlantic Meridional Oscillation and the North Atlantic Oscillation.

    # vimeo.com/88759350 Uploaded 45 Plays 0 Comments
  2. By Peter Franks
    Scripps Institution of Oceanography

    This lecture is part of the The Earth Science Colloquium video series. The Earth Science Colloquium Series is sponsored by the Lamont-Doherty Earth Observatory and the Columbia University Department of Earth and Environmental Sciences (DEES). This series provides a lively forum for discussing a wide variety of topics within the earth sciences and related fields. Colloquia are attended by the full range of scientific and technical staff at LDEO.

    # vimeo.com/78940979 Uploaded 44 Plays 0 Comments
  3. The Earth Institute's Lamont-Doherty Earth Observatory Earth Science Colloquium presents "Upper Mantle Oxidation State Implications for the Asthenosphere" with Elizabeth Cottrell, Director, Global Volcanism Program, Smithsonian National Museum of Natural History. Open to the Public.

    Hosts: Marc Spiegelman, Professor, Seismology, Geology and Tectonophysics, and David Walker, Higgings Professor, Geochemistry.

    This lecture is part of the The Earth Science Colloquium video series. The Earth Science Colloquium Series is sponsored by the Lamont-Doherty Earth Observatory and the Columbia University Department of Earth and Environmental Sciences (DEES). This series provides a lively forum for discussing a wide variety of topics within the earth sciences and related fields. Colloquia are attended by the full range of scientific and technical staff at LDEO.

    # vimeo.com/78016400 Uploaded 94 Plays 0 Comments
  4. By Suzanne Carbotte (Lamont-Doherty Earth Observatory, Columbia University)

    # vimeo.com/65915073 Uploaded 105 Plays 0 Comments
  5. By Jacquelyn Bolman - Director Indian Natural Resources, Science and Engineering Program, Humboldt State University

    # vimeo.com/64677459 Uploaded 183 Plays 0 Comments

Earth Science Colloquium Series

Lamont Doherty Plus

The Earth Science Colloquium Series is sponsored by the Lamont-Doherty Earth Observatory and the Columbia University Department of Earth and Environmental Sciences (DEES). This series provides a lively forum for discussing a wide variety of topics within…


+ More

The Earth Science Colloquium Series is sponsored by the Lamont-Doherty Earth Observatory and the Columbia University Department of Earth and Environmental Sciences (DEES). This series provides a lively forum for discussing a wide variety of topics within the earth sciences and related fields.

Browse This Channel

Shout Box

Heads up: the shoutbox will be retiring soon. It’s tired of working, and can’t wait to relax. You can still send a message to the channel owner, though!

Channels are a simple, beautiful way to showcase and watch videos. Browse more Channels.