deep-sea sediment Archives

Spatial patterns in cGENIE DIC δ13C excursion size and water mass age in response to −1‰ CIE. (A) Relative size of the δ13C excursion recorded for each model grid relative to the mean δ13C excursion in the ocean layer centered at ~3,300 m water depth. δ13C excursions are calculated as the DIC δ13C value at 11 ky less the initial value in that grid. Red colors (more negative) indicate CIEs larger than the average. (B) Atlantic zonal mean size of the δ13C excursion relative to the atmospheric δ13C excursion. δ13C excursions are calculated as the DIC δ13C value at 11 ky less the initial value. Contours show the Atlantic Meridional Overturning streamfunction at 11 ky calculated using the mask in SI Appendix, Fig. S1 (for comparison to the global streamfunction, see SI Appendix, Fig. S2). (C) Relative size of the change in water mass age recorded for each model grid relative to the mean change in water mass age in the ocean layer centered at ~3,300 m water depth. Changes in water mass age are calculated as the water mass age at 11 ky less the initial age in that grid. Red colors indicate larger increases in water mass age than the global average. -- PNAS

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Extinction events, Gaia - Planetary Perspectives, Habitable Zones, Press Release, Water/Hycean Worlds & Oceanography

Ancient Ocean Slowdown Warns Of Future Climate Chaos On Earth

by Keith CowingJune 13, 2024June 13, 2024

When it comes to the ocean’s response to global warming, we’re not in entirely uncharted waters. A UC Riverside study shows that episodes of extreme heat in Earth’s past caused […]

deep-sea sediment

Ancient Ocean Slowdown Warns Of Future Climate Chaos On Earth

Microorganisms Actively Shape Earth’s Ocean Floor

NASA SMD ROSES-25 Amendment 65: New Opportunity: C.4 Planetary Science Enabling Facilities [30 JULY UPDATE]

Unveiling Neutron And Gamma Spectrum At Martian Surface In Presence And Absence Of Hydrogen: A Computational Study Based On GEANT4 Simulations

HARMONI@ELT: Instrument Design, Performance, And Science Capabilities

Oil Droplets Remodel Themselves, And Swallow Their Surroundings – Like Living Cells