Feature Publication Archive
Stars show locations where sei whales, similar to this mother and calf, were detected.
Nieukirk, S.L., D.K. Mellinger, R.P. Dziak, H. Matsumoto, and H. Klinck (2020): Multi-year occurrence of sei whale calls in North Atlantic polar waters. J. Acoust. Soc. Am., 147(3), 1842–1850. https://doi.org/10.1121/10.0000931
The sei whale is a large baleen whale, in the same genus as the blue whale, found in most of the world's oceans outside the Arctic. From 2009 to 2014, we searched acoustically for sei whales off the northeast coast of Greenland on the edge of the Arctic Ocean. We did this by deploying hydrophones (underwater microphones) and recording ambient sound, then searching the resulting recordings for calls of sei whales. We heard many sei whale calls every summer in regions 600 km (400 mi) north of where they were known to routinely occur. We do not know if these detections surprisingly far north... more »
November storm in the western North Atlantic during the first North Atlantic Aerosols and Marine Ecosystem Cruise. Photo credit: Christien Laber
NAAMES research cruise tracks & timing.
Quinn, P.K., T.S. Bates, D.J. Coffman, L. Upchurch, J.E. Johnson, R. Moore, L. Ziemba, T.G. Bell, E.S. Saltzman, J. Graff, and M.J. Behrenfeld (2019): Seasonal variations in western North Atlantic remote marine aerosol properties. J. Geophys. Res. Atmos., 124(24), 14,240–14,261. doi: 10.1029/2019JD031740
Wave-breaking at the ocean surface transports pockets of air from the atmosphere into the upper few meters of the ocean. This air forms bubbles and as these bubbles rise to the ocean surface they pick up organic compounds associated with ocean biological activity. When the bubbles burst at the surface they release atmospheric aerosols containing those organics plus inorganic sea salt. In addition, dimethylsulfide (DMS), derived from phytoplankton, is transferred from the ocean to the atmosphere. Once in the atmosphere, it is oxidized to form sulfate aerosol. Ocean-derived organics and... more »
Rainfall changes due to warming of the Indo-Pacific Ocean and corresponding changes in the Madden Julian Oscillation. The shining sun depicts areas of declining rainfall while the rain clouds show where rainfall is increasing. Credit: Roxy M. Koll, Indian Institute of Tropical Meteorology, et al., Nature
Roxy, M.K., P. Dasgupta, M.J. McPhaden, T. Suematsu, C. Zhang, and D. Kim, 2019: Twofold expansion of the Indo-Pacific warm pool warps the MJO life cycle. Nature, 575, 647-651. https://doi.org/10.1038/s41586-019-1764-4
A new study published in the journal Nature (Roxy et al., 2019) shows that warming of the Indo-Pacific Ocean is altering rainfall patterns across the globe, contributing to declines in rainfall along the U.S. West Coast and parts of the East Coast. The research, involving NOAA scientists and others from India, Japan, and the U.S., reports that the warm pool of water spanning the western Pacific and eastern Indian Ocean has doubled in size over the past century. This “Indo-Pacific warm pool”, which is already the warmest part of the global ocean, is expanding each year by an area the size... more »
Many of the PMEL staff stopped by the NOAA booth to give lightning talks and network with other NOAA staff.
Buck, J.J.H., et al. (2019): Ocean data product integration through innovation—The next level of data interoperability. Front. Mar. Sci., 6, 32, Oceanobs19: An Ocean of Opportunity. https://doi.org/10.3389/fmars.2019.00032
Tanhua, T., et al. (2019): Ocean FAIR Data Services. Front. Mar. Sci., 6, 440, Oceanobs19: An Ocean of Opportunity. https://doi.org/10.3389/fmars.2019.00440
Vance, T.C., et al. (2019): From the oceans to the cloud: Opportunities and challenges for data, models, computation and workflows. Front. Mar. Sci., 6, 211, Oceanobs19: An Ocean of Opportunity. https://doi.org/10.3389/fmars.2019.00211
Meinig, C., et al. (2019): Public private partnerships to advance regional ocean observing capabilities: A Saildrone and NOAA-PMEL case study and future considerations to expand to global scale observing. Front. Mar. Sci., 6, 448, Oceanobs19: An Ocean of Opportunity. https://doi.org/10.3389/fmars.2019.00448
Meyssignac, B., et al. (2019): Measuring global ocean heat content to estimate the Earth energy imbalance. Front. Mar. Sci., 6, 432, Oceanobs19: An Ocean of Opportunity. https://doi.org/10.3389/fmars.2019.00432
Roemmich, D., et al. (2019): On the future of Argo: A global, full-depth, multi-disciplinary array. Front. Mar. Sci., 6, 439, Oceanobs19: An Ocean of Opportunity. https://doi.org/10.3389/fmars.2019.00439
Sloyan, B., et al. (2019): The Global Ocean Ship-Base Hydrographic Investigations Program (GO-SHIP): A platform for integrated multidisciplinary ocean science. Front. Mar. Sci., 6, 445, Oceanobs19: An Ocean of Opportunity. https://doi.org/10.3389/fmars.2019.00445
OceanObs’19 was held in Honolulu, Hawaii, in September 2019. The conference presented a unique forum to share new ideas and concepts in marine data management and to emphasize the opportunities presented by a rapidly changing technology landscape. The OceanObs’19 conference was designed to bring: “… people from all over the planet together to communicate the decadal progress of ocean observing networks and to chart innovative solutions to society’s growing needs for ocean information in the coming decade.”
OceanObs’19 community white papers (CWPs) included the input of nearly 2,500... more »
Relationship between the spreading rate of ridges and the spatial density (sites/100 km) of active hydrothermal sites on a given ridge segment. Higher spreading rates produce a greater magma supply to drive hydrothermal venting. In the Lau Basin, site production is ~10x higher than on other mid-ocean ridges. Red box in inset: NE Lau Basin.
Baker, E.T., S.L. Walker, G.J. Massoth, and J.A. Resing (2019): The NE Lau Basin: Widespread and abundant hydrothermal venting in the back-arc region behind a superfast subduction zone. Front. Mar. Sci., 6, 382, Pacific Deep-Sea Discoveries: Geological and Biological Exploration, Patterns, and Processes. doi: 10.3389/fmars.2019.00382
Fluids in the Earth’s crust are heated by magma rising to the seafloor where tectonic plates separate or collide. These discharging fluids cool hot rock, construct mineral deposits, nurture biological communities, alter deep-sea mixing and circulation patterns, and profoundly influence ocean chemistry and biology. Since the discovery of deep-sea hydrothermal vents in 1979, scientists have identified more than 700 sites where fluids presently emerge from the seafloor. Over the subsequent 40... more »