Posts Tagged «Matthew Alkire»

Alkire, M.B., J. Morison, A. Schweiger, J. Zhang, M. Steele, C. Peralta-Ferriz, and S. Dickinson (2017). A meteoric water budget for the Arctic Ocean, Journal of Geophysical Research, doi:10.1002/2017JC012807.

Alkire, M.B., J. Morison, and R. Andersen (2015). Variability in the meteoric water, sea-ice melt, and Pacific water contributions to the central Arctic Ocean, 2000-2014, Journal of Geophysical Research 120, doi:10.1002/2014JC010023.

Alkire, M.B., K.K. Falkner, I. Rigor, M. Steele, J. Morison (2007). The return of Pacific waters to the upper layers of the central Arctic Ocean, Deep-Sea Research I 54: 1509-1529.

Alkire, M.B., K.K. Falkner, J. Morison, R.W. Collier, C.K.Guay, R.A. Desiderio, I.G. Rigor, M. McPhee (2010). Sensor-based profiles of the NO parameter in the central Arctic and southern Canada Basin: new insights regarding the cold halocline, Deep-Sea Research I 57: 1432-1443, 2010.

This international, multidisciplinary effort will explore the Arctic Ocean’s Eurasian and Makarov basins (EMB) . Three August-September cruises, one every two years, are proposed, with extensive measurements along continental margins, a boundary current conduit; cruises will cover vast areas from Svalbard to the East Siberian Sea. The program ties together oceanographic, chemical, and ice observations using moorings, repeated oceanographic sections, and Lagrangian drifters to provide vital information about Arctic Ocean changes.

Matt Alkire leads the PSC team of authors that earned the Editor’s Highlight for AGU’s recent JGR: Oceans issue. Read on to learn why Matt’s article, A meteoric water budget for the Arctic Ocean, was singled out…

McPhee, M., J. Morison, A. Proshutinsky, M. Steele, M. Alkire (2009), Rapid Change in Freshwater Content of the Arctic Ocean, Geophysical Research Letters 36: doi:10.1029/2009GL037525.

Morison, J., R. Kwok, C. Peralta-Ferriz, M. Alkire, I. Rigor, R. Andersen, and M. Steele, Changing Arctic Ocean Freshwater Pathways Measured With ICESat and GRACE, Nature, 481, 66-70, DOI: 10.1038/nature10705, 2012

The observatory is staffed by an international research team that establishes a camp at the North Pole each spring to take the pulse of the Arctic Ocean and learn how the world’s northernmost sea helps regulate global climate.

There are two primary goals of this project: (1) determine whether relatively small Canadian Arctic rivers significantly contribute to the total volume of freshwater that drains through Davis Strait and (2) determine if they are chemically distinct from larger North American rivers such as the Mackenzie and Yukon Rivers.  To achieve these goals we have collected water samples from eight different rivers across Nunavut and the Northwest Territories to determine their geochemical signatures (e.g., d18O, total alkalinity, barium, Sr isotopes, major ions, and dissolved organic carbon).  The first year (2014) of field work is completed and chemical analyses of river samples are ongoing.  The second (2015) and third (2016) years of the project will involve a continuation of the river sampling efforts as well as extending sampling into the adjoining estuaries to assess changes across the salinity gradient.

Read more or go to the Project page