Ocean Warming From the Surface to the Deep

  • Slides: 2
Download presentation
Ocean Warming: From the Surface to the Deep in Observations and Models Objective •

Ocean Warming: From the Surface to the Deep in Observations and Models Objective • • Previous studies documented ocean warming for discrete ocean depths, primarily focused on the best sampled upper 0 -700 m We recently investigated changes in observations and models from the surface to the deep, considering only global mean Methodology • • We expand on previous work to consider the regional, and hemispheric partitioning of ocean warming over the modern period We expand previous work extending into the deep ocean (> 2000 m), which has previous gone unassessed Impact • • Observation-model analyses provide further evidence of human-caused ocean warming Models suggest surface to deep warming will be measured by observations if the deep measurement arrays are augmented and maintained Previous work investigated changes in models and observations; Consistency between these data sources has improved with the extended observed record Argo now provides comprehensive nearglobal data coverage, and during this period a very strong Southern Hemisphere warming has been observed Models have not been previously assessed for deep changes, as model drift complicates analysis; When drift is accounted for models (B) show a stronger deep warming than observations (A), but the spatial distribution shares similarities Reference: P. J. Durack, P. J. Gleckler, S. G. Purkey, G. C. Johnson, J. M. Lyman and T. P. Boyer (2018) Ocean Warming: From the Surface to the Deep in Observations and Models. Oceanography, 31 (2), 41 -51. doi: 10. 5670/oceanog. 2018. 227 1 BER Climate Research Department of Energy • Office of Science • Biological and Environmental Research

Ocean Warming: From the Surface to the Deep in Observations and Models New insights

Ocean Warming: From the Surface to the Deep in Observations and Models New insights about ocean variability and change are now available thanks to progress in observing and modeling the global ocean Reference: P. J. Durack, P. J. Gleckler, S. G. Purkey, G. C. Johnson, J. M. Lyman and T. P. Boyer (2018) Ocean Warming: From the Surface to the Deep in Observations and Models. Oceanography, 31 (2), 41 -51. doi: 10. 5670/oceanog. 2018. 227 2 BER Climate Research Department of Energy • Office of Science • Biological and Environmental Research