Posts Tagged «2015»

The Seattle Times reviewed the Imaging the Arctic exhibit at the Nordic Heritage Museum organized by Kristin Laidre and Maria Coryell-Martin.

PSC members join their colleagues and peers at the AGU 2015 Fall Meeting in San Francisco, California.

Alert in the Arctic: The Navy’s New Frontier. Features SIZRS, Jamie Morison, Sarah Dewey


NASA climate scientists report that Antarctica has gained ice in the form of snow accumulation. This study was recently published in the Journal of Glaciology and reporters have sought comments from their peers at the Polar Science Center.

Results of a recent long-term and large-scale simulation of the collapse of the Western Antarctic Ice Sheet (WAIS) show that the destabilization of the entire ice sheet would be irreversible if current conditions don’t change by 2075.

The Polar Science Center’s Harry Stern contributed the essay called Sea Ice in the Western Portal of the Northwest Passage from 1778 to the Twenty-First Century in this new book by the University of Washington Press.

A new article published in Conservation Biology and featured in Science by lead author Kristin Laidre is the first to provide a comprehensive look at the current status of all Arctic marine mammal species and offer conservation recommendations.

In mid-September Arctic sea ice reaches its minimum extent and volume. There are annual fluctuations — 2012 was a record low for both measures — but reports of a recent ‘rebound’ are short-sighted. Axel Schweiger explains why the downward long-term trend is clear.

Bering Strait is the only pathway between the Pacific and  Arctic oceans. For 15 years now, APL-UW researchers and  their multi-institutional colleagues have measured the  properties of the flow through the strait with a series  moorings that are recovered and re-deployed each summer. Follow their July 2015  CRUISE BLOG 

Bieniek, P., U. Bhatt, D. Walker, M. Raynolds, J. Comiso, H. Epstein, J. Pinzon, C. Tucker, R. Thoman, H. Tran, N. Mölders, M. Steele, J. Zhang, and W. Ermold, The role of climate drivers in the seasonality of Alaska coastal tundra vegetation change, Earth Interactions, doi:10.1175/EI-D-15-0013.1, 2015.

Bromaghin, J. F., T. L. McDonald, I. Stirling, A. E. Derocher, E. S. Richardson, E. V. Regehr, D. C. Douglas, G. M. Durner, T. Atwood, and S. C. Amstrup. 2015. Polar bear population dynamics in the southern Beaufort Sea during a period of sea ice decline. Ecological Applications 25:634-651. DOI: 10.1890/14-1129.1

Cameron, K.A., B. Hagedorn, M. Dieser, B.C. Christner, K. Choquette, R. Sletten, B. Crump, C. Kellogg, and K. Junge. 2015. Diversity and potential sources of microbiota associated with snow on western portions of the Greenland Ice Sheet. Environmental Microbiology, 17:594-609.

Carns, R. C., R. E. Brandt, and S. G. Warren (2015), Salt precipitation in sea ice and its effect on albedo, with application to Snowball Earth, J. Geophys. Res. Ocean., 120(3), 2370–2384, doi:10.1002/2014JC010516.

Crait, J.C., E.V. Regehr, and M. Ben-David. 2015. Indirect effects of bioinvasions in Yellowstone Lake: The response of river otters to declines in native cutthroat trout. Biological Conservation 191:596-605. doi:10.1016/j.biocon.2015.07.042

Danielson, S.L., et al., including K. Aagaard and R. Woodgate, “Coupled wind-forced controls of the Bering–Chukchi shelf circulation and the Bering Strait throughflow: Ekman transport, continental shelf waves, and variations of the Pacific–Arctic sea surface height gradient,” Prog. Oceanogr., 125, 40-61, doi:10.1016/j.pocean.2014.04.006, 2014.

Doherty, S., M. Steele, I. Rigor, and S. G. Warren, Interannual variations of light-absorbing particles in snow on Arctic sea ice, J. Geophys. Res., 120, doi:10.1002/2015JD024018, 2015

C.M. Frantz, V.A. Petryshyn, F.A. Corsetti (2015) “Grain trapping by filamentous cyanobacterial and algal mats: implications for stromatolite microfabrics through time.” Geobiology, V.13:409-423, doi:10.1111/gbi.12145

Kwok, R. and G. F. Cunningham (2015), Variability of Arctic sea ice thickness and volume from CryoSat-2, Phil. Trans. R. Soc. A, 373:20140157, doi:10.1098/rsta.2014.0157.

Kwok, R., (2015), Sea ice convergence along the Arctic coasts of Greenland and the Canadian Arctic Archipelago: Variability and extremes (1992-2014), Geophys. Res. Lett., 42, 7598–7605.

Kwok, R., and J. Morison (2015), Sea surface height and dynamic topography of the ice-covered oceans from CryoSat-2: 2011–2014, J. Geophys. Res. Oceans, 121, doi:10.1002/2015JC011357

Laidre, K. L., Stern, H., Kovacs, K. M., Lowry, L., Moore, S. E., Regehr, E. V., Ferguson, S. H., Wiig, Ø., Boveng, P., Angliss, R. P., Born, E. W., Litovka, D., Quakenbush, L., Lydersen, C., Vongraven, D. and Ugarte, F. (2015), Arctic marine mammal population status, sea ice habitat loss, and conservation recommendations for the 21st century. Conservation Biology. doi: 10.1111/cobi.12474

Light, B., S. Dickinson, D. K. Perovich, and M. M. Holland (2015), Evolution of summer Arctic sea ice albedo in CCSM4 simulations: Episodic summer snowfall and frozen summers, J. Geophys. Res., 120, 284–303, doi:10.1002/2014JC010149

Light, B., R. C. Carns, and S. G. Warren (2015), “Albedo dome”: a method for measuring spectral flux-reflectance in a laboratory for media with long optical paths, Appl. Opt., 54(17), 5260–5269.

Light, B., D. K. Perovich, M. A. Webster, C. Polashenski, and R. Dadic (2015), Optical properties of melting first-year Arctic sea ice, J. Geophys. Res. Oceans, 120, 7657–7675, doi:10.1002/2015JC011163.

Lindsay, R. and A. Schweiger, Arctic sea ice thickness loss determined using subsurface, aircraft, and satellite observations, The Cryosphere, 9, 269-283, doi:10.5194/tc-9-269-2015, 2015

Liu, Z., A. Schweiger, and R. Lindsay (2015), Observations and Modeling of Atmospheric Profiles in the Arctic Seasonal Ice Zone, Monthly Weather Review, 143(1), 39-53.

Liu, Z., A. Muhlbauer, and T. Ackerman (2015), ‘Evaluation of high-level clouds in cloud resolving model smulations with ARM and KWAJEX observations’, J. Adv. Model. Earth. Syst., 7, doi: 10.1002/2015MS000478.

A rotating crew of international scientists embarked on a research cruise in the Arctic and investigated the causes and effects of ice loss by monitoring the ice across its entire seasonal life cycle. UW polar scientist Kristin Laidre remarks, to Andy Isaacson of National Geographic, how further loss of sea ice could affect the Arctic marine ecosystem, from algae to polar bears.

Nunn, B.L., K. Slattery, K. A. Cameron, E. Timmins-Schiffman, and K. Junge. 2015. Proteomics of Colwellia psychrerythraea at subzero temperatures – a life with limited movement, flexible membranes and vital DNA repair. Environmental Microbiology. 111, 9009-9014.

Scientific American reports on a new study deriving ice thickness trends from measurements by the Polar Science Center’s Ron Lindsay and Axel Schweiger’s article published in The Cryosphere.

ONR Develops Program to Assist Ships While Navigating Through the Ice in the Arctic

Overeem, Irina, Hudson, B.D., Welty, E., Mikkelson, A., Pederson, D., LeWinter, and A., Hasholt, B., 2015, River Inundation Suggests Ice-Sheet Runoff Retention, Journal of Glaciology 61 (228): 776-788.

Patyk, K.A., C. Duncan, P. Nol, C. Sonne, K. Laidre, M. Obbard, Ø. Wiig, J. Aars, E. Regehr, L.L. Gustafson, and T. Atwood. 2015. Establishing a definition of polar bear (Ursus maritimus) health: A guide to research and management activities. Science of the Total Environment 514:371-378.

Peacock, E., S. A. Sonsthagen, M. E. Obbard, A. Boltunov, E. V. Regehr, N. Ovsyanikov, J. Aars, S. N. Atkinson, G. K. Sage, A. G. Hope, E. Zeyl, L. Bachmann, D. Ehrich, K. T. Scribner, S. C. Amstrup, S. Belikov, E. W. Born, A. E. Derocher, I. Stirling, M. K. Taylor, O. Wiig, D. Paetkau, and S. L. Talbot. 2015. Implications of the Circumpolar Genetic Structure of Polar Bears for Their Conservation in a Rapidly Warming Arctic. Plos One 10(1): e112021. doi:10.1371/journal.pone.0112021

Peralta-Ferriz, C., and R. A. Woodgate, Seasonal and interannual variability of pan-Arctic surface mixed layer properties from 1979 to 2012 from hydrographic data, and the dominance of stratification for multiyear mixed layer depth shoaling, Prog. Oceanogr., doi: 10.1016/j.pocean.2014.12.005, 2015.

Poinar, K., I. Joughin, S. B. Das, M. D. Behn, J. T. M. Lenaerts, and M. R. van den Broeke (2015). Limits to future expansion of surface‐melt‐enhanced ice flow into the interior of western Greenland. Geophysical Research Letters. doi:10.1002/2015GL063192.

Polashenski, C., D. K. Perovich, K. E. Frey, L. W. Cooper, C. I. Logvinova, R. Dadic, B. Light, H. P. Kelly, L. D. Trusel, and M. Webster (2015), Physical and morphological properties of sea ice in the Chukchi and Beaufort Seas during the 2010 and 2011 NASA ICESCAPE missions, Deep. Res. Part II Top. Stud. Oceanogr., 118, 7–17, doi:10.1016/j.dsr2.2015.04.006.

PSC Glaciologist Ian Joughin was elected to be an AGU fellow as part of the class of 2015. Congratulations to Ian for this well-deserved honor recognizing his many contributions towards understanding ice sheets dynamics.

Regehr, E. V., R. R. Wilson, K. D. Rode, and M. C. Runge. 2015. Resilience and risk—A demographic model to inform conservation planning for polar bears. U.S. Geological Survey Open-File Report 2015-1029, 56 p.,

Rode KD, Wilson RR, Regehr EV, St. Martin M, Douglas DC, Olson J (2015) Increased Land Use by Chukchi Sea Polar Bears in Relation to Changing Sea Ice Conditions. PLoS ONE 10(11): e0142213. doi:10.1371/journal.pone.0142213

Coast Guard C-130 take SIZRS crew to the North Pole

PSC research analyzes the future of supraglacial lakes on the Greenland Ice Sheet and how they will, or will not, contribute to global sea level over the coming decades.

Steele, M. and W. Ermold, Loitering of the retreating sea ice edge in the Arctic Seas, J. Geophys. Res., doi:10.1002/2015JC011182, 2015.

Stevens, L.A., Behn, M.D., McGuire, J.J., Das, S.B., Joughin, I., Herring, T., Shean, D.E., M. A. King, Greenland supraglacial lake drainages triggered by hydrologically induced basal slip, Nature, 522, 7554, 73-76, doi:10.1038/nature14480, 2015.

Thomson Reuters named PSC Glaciologist Ian Joughin as one of The World’s Most Influential Scientific Minds of 2015. Congratulations to Ian for this well deserved honor recognizing his many contributions towards understanding ice sheets dynamics.

As part of the Future of Ice Initiative, the Polar Science Center at the Applied Physics Laboratory has added 3 new Principal Investigators.

Toner, J. D., D. C. Catling, and B. Light (2015), A revised Pitzer model for low-temperature soluble salt assemblages at the Phoenix site, Mars, Geochim. Cosmochim. Acta, 166, 327–343, doi:10.1016/j.gca.2015.06.011.

Toner, J. D., D. C. Catling, and B. Light (2015), Modeling salt precipitation from brines on Mars : Evaporation versus freezing origin for soil salts, Icarus, 250, 451–461, doi:10.1016/j.icarus.2014.12.013.

Webster, M. A., I. G. Rigor, D. K. Perovich, J. A. Richter-Menge, C. M. Polashenski, and B. Light (2015), Seasonal evolution of melt ponds on Arctic sea ice, J. Geophys. Res. Oceans, 120, 5968–5982, doi:10.1002/ 2015JC011030.