Pacific Origin of the Abrupt Increase in Indian Ocean Heat Content during the Warming Hiatus. Lee, S., Park, W., Baringer, M. O., Gordon, A. L., Huber, B., & Liu, Y. Nature Geosci, 8(6):445–449, June, 2015.
doi  abstract   bibtex   
Global mean surface warming has stalled since the end of the twentieth century1, 2, but the net radiation imbalance at the top of the atmosphere continues to suggest an increasingly warming planet. This apparent contradiction has been reconciled by an anomalous heat flux into the ocean3, 4, 5, 6, 7, 8, induced by a shift towards a La Niña-like state with cold sea surface temperatures in the eastern tropical Pacific over the past decade or so. A significant portion of the heat missing from the atmosphere is therefore expected to be stored in the Pacific Ocean. However, in situ hydrographic records indicate that Pacific Ocean heat content has been decreasing9. Here, we analyse observations along with simulations from a global ocean-sea ice model to track the pathway of heat. We find that the enhanced heat uptake by the Pacific Ocean has been compensated by an increased heat transport from the Pacific Ocean to the Indian Ocean, carried by the Indonesian throughflow. As a result, Indian Ocean heat content has increased abruptly, which accounts for more than 70\,% of the global ocean heat gain in the upper 700 m during the past decade. We conclude that the Indian Ocean has become increasingly important in modulating global climate variability.
@article{leePacificOriginAbrupt2015,
  title = {Pacific Origin of the Abrupt Increase in {{Indian Ocean}} Heat Content during the Warming Hiatus},
  author = {Lee, Sang-Ki and Park, Wonsun and Baringer, Molly O. and Gordon, Arnold L. and Huber, Bruce and Liu, Yanyun},
  year = {2015},
  month = jun,
  volume = {8},
  pages = {445--449},
  issn = {1752-0894},
  doi = {10.1038/ngeo2438},
  abstract = {Global mean surface warming has stalled since the end of the twentieth century1, 2, but the net radiation imbalance at the top of the atmosphere continues to suggest an increasingly warming planet. This apparent contradiction has been reconciled by an anomalous heat flux into the ocean3, 4, 5, 6, 7, 8, induced by a shift towards a La Ni\~na-like state with cold sea surface temperatures in the eastern tropical Pacific over the past decade or so. A significant portion of the heat missing from the atmosphere is therefore expected to be stored in the Pacific Ocean. However, in situ hydrographic records indicate that Pacific Ocean heat content has been decreasing9. Here, we analyse observations along with simulations from a global ocean-sea ice model to track the pathway of heat. We find that the enhanced heat uptake by the Pacific Ocean has been compensated by an increased heat transport from the Pacific Ocean to the Indian Ocean, carried by the Indonesian throughflow. As a result, Indian Ocean heat content has increased abruptly, which accounts for more than 70\,\% of the global ocean heat gain in the upper 700 m during the past decade. We conclude that the Indian Ocean has become increasingly important in modulating global climate variability.},
  journal = {Nature Geosci},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13618538,~to-add-doi-URL,climate-change,global-warming,heat-storage,indian-ocean,oceans},
  lccn = {INRMM-MiD:c-13618538},
  number = {6}
}
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