Feature Publication Archive
Stöven, T., T. Tanhua, M. Hoppema, and J.L. Bullister (2015): Perspectives of transient tracer applications and limiting cases. Ocean Sci., 11, 699–718, doi:10.5194/os-11-699-2015.
The concentrations of a number of radioisotopes and gases—including chlorofluorocarbons (CFCs), sulfur hexafluoride, and carbon dioxide (CO2)—have increased significantly in the atmosphere during the past century. These compounds dissolve in the surface ocean and are subsequently carried into the ocean interior, acting as “tracers” of complex oceanic mixing and circulation processes. Some of these compounds, such as CFCs, are entirely anthropogenic in origin (i.e., they are produced solely as a result of human activity). Studies of the changing distributions of dissolved CFCs in the ocean... more »
McPhaden, M.J. (2015): Playing hide and seek with El Niño. Nature Clim. Change, 5, 791–795, doi:10.1038/nclimate2775.
The scientific community and the popular press were abuzz in early 2014 with the possibility that a “monster” El Niño was incubating in the tropical Pacific. Oceanic and atmospheric conditions then suggested similarities with the onset of the 1997/98 El Niño, which is the strongest on record. Model forecasts from the early months of 2014 were also consistent in predicting development of El Niño conditions as the year progressed.
But then the big El Niño went bust, defying conventional wisdom and the computer model forecasts. Why this happened is a mystery that has left the experts... more »
Johnson, G.C., and A.R. Parsons (2015): Overview. In State of the Climate in 2014, Global Oceans. Bull. Am. Meteorol. Soc., 96(7), S59.
Every year NOAA leads a team of international scientists in issuing a report on the state of the climate in the year just passed, published as a supplement to Bulletin of the American Meteorological Society. Ten Federal, JISAO, and JIMAR scientists resident at PMEL co-authored four of twelve sections and a sidebar in the Global Oceans chapter and a section in the Arctic chapter for the State of the Climate in 2014 report, published in July 2015. In addition, Dr. Gregory... more »
Mathis et al., 2015. Special Issue on Emerging Themes in Ocean Acidification Science. Oceanography, 28(2), 10–228.
In June 2015,Oceanography released a special issue on Emerging Themes in Ocean Acidification Science. The papers in this issue were written in conjunction with the 2013 Ocean Acidification Principle Investigator’s Meeting, organized by the Ocean Carbon and Biogeochemistry Project’s Ocean Acidification subcommittee and sponsored by NSF, NOAA, and NASA. This meeting brought together the US-funded OA research community to assess the state of the science... more »
Bond, N.A., M.F. Cronin, H. Freeland, and N. Mantua (2015): Causes and impacts of the 2014 warm anomaly in the NE Pacific. Geophys. Res. Lett., 42(9), 3414–3420, doi:10.1002/2015GL063306.
Remarkably high sea surface temperature anomalies developed in the NE Pacific Ocean during the winter of 2013/14. This caught the attention of Nick Bond of the University of Washington’s Joint Institute for the Study of the Atmosphere and Ocean (JISAO)—who started calling the mass of warm water the “Blob”—and Meghan Cronin of NOAA Pacific Marine Environmental Laboratory (PMEL). Their objective was to determine the relative importance of the various upper ocean temperatures that could have been responsible for this short-term climate event.
As detailed in this recent article... more »