Author Archive

News station KING 5 interviews PSC’s Jamie Morison, as environmental policies change under the new administration resulting in strong, public response. Watch the clip of the PSC oceanographer discussing his own research observations, Arctic data available from the National Snow and Ice Data Center (NSIDC), and the need to continue polar research. 

Congratulations to PSC’s Sarah Dewey for passing her PhD Defense! She presented her research earlier this month with her talk, Evolving Ice-Ocean Dynamics of the Western Arctic. 

Conn, P.B., E. E. Moreland, E. V. Regehr, E. L. Richmond, F. Cameron, and P.L. Boveng. 2016. Using simulation to evaluate wildlife survey designs: polar bears and seals in the Chukchi Sea. Royal Society Open Science. doi:  10.1098/rsos.150561

The publication Conservation Biology announced its awards for 2016 and PSC’s Kristin Laidre is the lead author of the paper that earned the second highest altmetric score, Arctic Marine Mammal Population Status, Sea Ice Habitat Loss, and Conservation Recommendations for the 21st Century.
Laidre led the collaborative effort which involved PSC colleagues Harry Stern and Eric Regehr (at present), along with other researchers from Canada, Greenland, Norway, Russia and other US institutions. Congratulations to Kristin and the team!

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.

PSC’s Daniel Shapero is participating in the Applied Physics Laboratory Seminar Series — Fall 2016. On Thursday, October 6, 2:30 PM in 512 Benjamin Hall, UW, Daniel will give a talk describing some of his work in the field of inverse or data assimilation, both in the methodology and the application to major outlet glaciers in Greenland.

The Arctic Data Center, supported by NSF, has highlighted Karen Junge’s work investigating rotten ice. Data has been collected on both the physical and biological properties of rotten ice and is available from the center.  

Peter E. D. Davis, Camille Lique, Helen L. Johnson, and John D. Guthrie, 2016: Competing Effects of Elevated Vertical Mixing and Increased Freshwater Input on the Stratification and Sea Ice Cover in a Changing Arctic Ocean. J. Phys. Oceanogr., 46, 1531–1553, doi: 10.1175/JPO-D-15-0174.1.

De Steur, L., M. Steele, E. Hansen, J. Morison, I. Polyakov, S. M. Olsen, H. Melling, F. A. McLaughlin, R. Kwok, W. M. Smethie Jr., and P. Schlosser, Hydrographic changes in the Lincoln Sea in the Arctic Ocean with focus on an upper ocean freshwater anomaly between 2007 and 2010, J. Geophys. Res., 118, 4699-4715, 10.1002jgrc.20341, 2013

Global warming not so global? PSC postdoc Aaron Donohoe has co-authored a study recently published in Nature Geoscience showing how and why the Antarctic Ocean has not warmed in comparison to what has been observed in the Arctic.

Dewey, S., Morison, J., Kwok, R., Dickinson, S., Morison, D. & Andersen, R., 2018. Arctic ice-ocean coupling and gyre equilibration observed with remote sensing. Geophysical Research Letters, 45.

Ding, Q., Schweiger, A., L’Heureux, M., Steig, E. J., Battisti, D. S., Johnson, N. C., Blanchard-Wrigglesworth, E., Po-Chedley, S., Zhang, Q., Harnos, K., Bushuk, M., Markle, B., and Baxter, I. (2018), Fingerprints of internal drivers of Arctic sea ice loss in observations and model simulations. Nature Geoscience.

Ding, Y., J. A. Carton, G. A. Chepurin, M. Steele, and S. Hakkinen, Seasonal heat and freshwater cycles in the Arctic Ocean in CMIP5 coupled models, J. Geophys. Res., 121, doi:10.1002/2015JC011124, 2016.

Ding, Q., A. Schweiger, M. L’Heureux, D. S. Battisti, S. Po-Chedley, N. C. Johnson, E. Blanchard-Wrigglesworth, K. Harnos, Q. Zhang, R. Eastman and E. J. Steig (2017), Influence of high-latitude atmospheric circulation changes on summertime Arctic sea ice, Nature Climate Change, doi:10.1038/nclimate3241

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

Aaron Donohoe

Senior Research Scientist

Durner, G. M., Laidre, K. L., and York, G .S., eds. 2018. Polar Bears: Proceedings of the 18th Working Meeting of the IUCN/SSC Polar Bear Specialist Group, 7–11 June 2016, Anchorage, Alaska. Gland, Switzerland and Cambridge, UK: IUCN. xxx + 207pp.

What is traditional knowledge and how can it help us understand climate change? Online news source, Earther, talks to Kristin Laidre about her recently published research involving some of the Inuit communities of East Greenland. Inuit sustenance hunters were interviewed about their livelihood, the landscape of their homeland, and more to form a picture of how things have changed over time. 

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…

Eicken, H., A. Mahoney, J. Jones, T. Heinrichs, D. Broderson, H. Statscewich, T. Weingartner, M. Stuefer, T. Ravens, M. Ivey, A. Merten, and J. Zhang, Sustained observations of changing Arctic coastal and marine environments and their potential contribution to Arctic maritime domain awareness: A case study in northern Alaska, Arctic, 71, 1-15.,, 2018.

APL-UW has produced a video about Polar Science Weekend, an annual public outreach event centering around polar research.  Watch APL-UW scientists, including veteran PSW participants PSC’s Ben Smith and Wendy Ermold, explain their research in ways that apply the principles of physics via hands-on activities to the community.

Escajeda, E., Laidre, K. L., Born, E. W., Wiig, Ø., Atkinson, S., Dyck, M., Ferguson, S. H., Lunn, N. J. (2018) Identifying shifts in maternity den phenology and habitat characteristics of polar bears (Ursus maritimus) in Baffin Bay and Kane Basin. Polar Biology DOI: 10.1007/s00300-017-2172-6

Erica Escajeda

Research Assistant

The Washington Post reports on the changes in Arctic sea ice and its effect on the polar bear. The main source of the article is a recent study by PSC’s Harry Stern and Kristin Laidre, published in The Cryosphere. covers the use of animals, such as narwhals and elephant seals, outfitted with non-invasive devices to collect data on the effects of climate change on the environment of the Arctic and Antarctic. The article includes the work of PSC researchers, Michael Steele and Kristin Laidre.

UW News covers PSC’s Eric Regehr’s polar bear study of the Chukchi Sea subpopulation. This is the first formal study of this population and is published in the open-access journal Scientific Reports. Read on to learn more about the lead author’s decade-long project and the status of the Chukchi Sea polar bears.

Frantz, C. M., Light, B., Farley, S. M., Carpenter, S., Lieblappen, R., Courville, Z., Orellana, M. V., and Junge, K.: Physical and optical characteristics of heavily melted “rotten” Arctic sea ice, The Cryosphere, 13, 775-793,, 2019. 

Ignatius Rigor collaborated on a study of Antarctic sea ice change using satellite observations. Read the paper presenting the findings in the journal Remote Sensing of Environment.

Satellite tags and video cameras are successfully tracking movement and recording images of humpback whales along the Antarctic Peninsula. National Geographic asks PSC’s Kristin Laidre about the arduous methods used to collect data on marine mammals in polar environments. 

Seattle Girls’ School has named PSC PI Kristin Laidre recipient of their 2016 Grace Hopper Award for Outstanding Achievement. Kristin is being recognized for her successful endeavors to make her research efforts accessible to many age groups.

She will be honored at the SGS 14th Annual Luncheon on May 5, 2016. Congratulations, Kristin!

Matt Alkire, John Guthrie and Jamie Morison were part of an international team of researchers that studied the effects of the Atlantic Ocean on sea ice cover in the eastern Eurasian Basin of the Arctic Ocean. Read the findings published in Science Magazine.

The Washington Post asks Ian Joughin about a recent study, in the journal Science Advances, using a GPS network which measures ice sheet mass loss in Greenland and re-evaluates previous studies.

Hakai Magazine covered a recent paper led by PSC’s Kristin Laidre and asked about the collaborative project in which Kristin, the research team, and interpreters interviewed Inuit hunters and gathered traditional knowledge on polar bear ecology in East Greenland. Read the article to find out how the subsistence and cultural relationships have changed for the arctic animals & Indigenous communities. 

John Guthrie

Senior Research Scientist

Gutt, J., M.R. Cape, W. Dimmler, L. Fillinger, E. Isla, V. Lieb, T. Lundälv, and C. Pulcher (2013), Shifts in Antarctic megabenthic structure after ice-shelf disintegration in the Larsen area east of the Antarctic Peninsula, Polar Biol, 36(6), 895–906, doi:10.1007/s00300-013-1315-7.

August 2019 – NASA’s Center for Climate Simulation reported on the recent Cryospheric Science Hackweek held at UW. The article includes an interview with PSC’s Anthony Arendt and workshop coverage from other planners, facilitators, and participants. 

Hale, J. R., Laidre, K. L., Tinker, M. T., Jameson, R. J., Jeffries, S. J., Larson, S. E. and Bodkin, J. L. (2019), Influence of occupation history and habitat on Washington sea otter diet. Mar Mam Sci. doi:10.1111/mms.12598

Jessica Hale

Research Assistant

Hauser, D. D. W., Laidre, K. L., Stafford, K. M., Stern, H. L., Suydam, R. S. and Richard, P. R. (2016), Decadal shifts in autumn migration timing by Pacific Arctic beluga whales are related to delayed annual sea ice formation. Glob Change Biol. doi:10.1111/gcb.13564

Hauser, D. D. W., K. L. Laidre, H. L. Stern. 2018. Vulnerability of Arctic marine mammals to vessel traffic in the increasingly ice-free Northwest Passage and Northern Sea Route. Proceedings of the National Academy of Sciences. doi:10.1073/pnas.1803543115

Hauser, D.D W., Laidre K. L., Stern H.L., Moore S.E., Suydam, R. S., and Richard, P.R.: Habitat selection by two beluga whale populations in the Chukchi and Beaufort seas, PLoS ONE 12(2), doi:10.1371/journal.pone.0172755, 2017.

Hauser DDW, Laidre KL, Stern HL, Suydam RS, Richard PR. Indirect effects of sea ice loss on summer‐fall habitat and behaviour for sympatric populations of an Arctic marine predator. Divers Distrib. 2018;24:791–799.

Hauser, D.D.W., K.L. Laidre, H.L. Stern, R.S. Suydam, P.R. Richard. 2018. Indirect effects of sea ice loss on summer-fall habitat and behaviour for sympatric populations of an Arctic marine predator. Diversity and Distributions

The Washington Post reports that although “Arctic Sea Ice Blog: Interesting News and Data” will be going on hiatus, the Arctic Sea Ice Forum will remain open and monthly PIOMAS updates will continue. Axel Schweiger comments on how the blog and the PSC dataset has helped create a thoughtful and detailed real-time public discourse.

Heide‐Jørgensen, M. P., Hansen, R. G., Fossette, S. , Nielsen, N. H., Borchers, D. L., Stern, H. and Witting, L. (2017), Rebuilding beluga stocks in West Greenland. Anim Conserv, 20: 282-293.