Posts Tagged «Harry Stern»

APL-UW has produced a video with Harry Stern and his research of the Arctic ice edge that incorporated logs and maps of Captain James Cook’s polar expedition among other early explorers.

Popular Science reported on Harry Stern’s research paper which analyzed observations recorded by the earliest explorers of the Northwest Passage in correlation to the current trend in sea ice.

UW Today highlights the latest article, by PSC’s Harry Stern and Kristin Laidre, published in The Cryosphere. Other media sources reporting the study are The Seattle TimesScience DailyThe Washington PostMashable, and

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.

Eurasia Review reports on the results of the lengthy study of beluga whale migration led by PSC and published in the journal Global Change Biology. The news post includes previous comments by some of the authors, Donna Hauser and Kate Stafford.

The University of Washington news produced a video with the Polar Science Center highlighting a six-year study of Beluga whale populations. Donna HauserKristin Laidre, and Harry Stern participated from PSC.

The news source International Business Times, out of the UK, reports on findings recently published in Global Change Biology of a decades-long research study involving Beluga whales. Donna HauserKristin Laidre, Harry Stern and colleagues examined changes in autumn migration timing of Beluga whale populations since the 1990s.

The primary objective of this research is to construct a comprehensive bias-corrected sea ice thickness record and use it to better quantify and understand the dramatic changes that have been observed in the Arctic ice pack. To do this all available Arctic sea ice thickness observations will be integrated, from satellite, aircraft, and subsurface measurements, and used to identify and correct systematic errors through comparisons with a common reference. With the resultant record four science questions will be answered:• What are the systematic differences between different measurement systems for sea ice thickness?• What are the spatial patterns in the trends…

This project aims to understand and quantify the effects of sea ice loss on polar bears in East and West Greenland (Baffin Bay).  Longitudinal (cross-time) comparisons of movement behavior and habitat selection will be driven by an analysis of a multi-decadal satellite telemetry dataset on polar bear movements in Baffin Bay and East Greenland, beginning when sea ice concentration and break up date started to decline (1991-1997) and encompassing present day conditions (2007-2013).

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!

Coon, M.D., G.S. Knoke, D.C. Echert, and H.L. Stern, 1993, Contemporaneous field measurements of pack ice stress and ice strain measurements from SAR imagery, Proceedings of Oceans ’93, vol. III, pp. 31-36, Victoria, Canada, October 18-21.

Dietz, R., E.W. Born, R. Stewart, M.P. Heide-Jørgensen, H. Stern, F. Rigét, L. Toudal, C. Lanthier, M. Villum Jensen, and J. Tielmann, 2013, Movements of walruses (Odobenus Rosmarus) between Central West Greenland and Southeast Baffin Island, 2005-2008, North Atlantic Marine Mammal Commission (NAMMCO) Scientific Publication Series, Volume 9.

Dietz, R., E.W. Born, R. Stewart, M.P. Heide-Jorgensen, H. Stern, F. Riget, L. Toudal, C. Lanthier, M. Villum Jensen, and J. Tielmann, 2011, Movements of walruses (Odobenus Rosmarus) between Central West Greenland and Southeast Baffin Island 2005-2008, submitted to NAMMCO Special Walrus Issue.

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.

Fisher, D.A., D.P. Winebrenner, and H. Stern, 2002, Lineations on the white accumulation areas of the residual northern ice cap of Mars: Their relation to the ‘accublation’ and ice flow hypothesis, Icarus, 159, pp. 39-52.

Geilhufe, M., D.B. Percival, and H.L. Stern, 2013, Two-dimensional wavelet variance estimation with application to sea ice SAR images, Computers & Geosciences, 54, 351-360.

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

Heide-Jorgensen, M.P., M. Iversen, N.H. Nielsen, C. Lockyer, H. Stern, and M.H. Ribergaard, 2011, Harbour porpoise respond to climate change, Ecology and Evolution, accepted.

Heide-Jørgensen, M.P., H. Stern, and K. Laidre,’ Dynamics of the ice edge in Davis Strait’, Journal of Marine Systems, 67, 170-178, 2007

Heide-Jørgensen, M.P., K. Laidre, D. Borchers, F. Samarra, and H. Stern,’ Increasing abundance of bowhead whales in West Greenland’, Biol. Lett., 3, 577-580, doi:10.1098/rsbl.2007.0310, 2007.

Heide-Jørgensen, M.P., K.L. Laidre, D. Borchers, T.A. Marques, H. Stern, and M. Simon, 2010, The effect of sea-ice loss on beluga whales (Delphinapterus leucas) in West Greenland’, Polar Research, doi:10.1111/j.1751-8369.2009.00142.x, 2010.

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.

The Seattle Times covered Harry Stern’s research study which tracked changes along the Arctic ice edge combining modern technology and historical records such as maps and logs from Captain James Cook’s 18th-century voyage.

The UW Today reports on the open-access study recently published in the Journal of Applied Ecology by PSC’s Eric Regehr and a collaborative team, including Harry Stern. The team combined data collected on polar bear subpopulations with that of sea ice extent and identified ways to carry on subsistence harvesting with the least amount of negative impact already caused by habitat loss.

Recent research by Kristin Laidre and Harry Stern on the impacts of climate change on Arctic narwhals is published in Polar Biology.  See the article in Conservation Magazine.

Joughin, I., I. Howat, M. Fahnestock, B. Smith, W. Krabill, R. Alley, H. Stern, and M. Truffer, 2008, Continued Evolution of Jakobshavn Isbrae Following its Rapid Speedup, J. Geophys. Res., 113, F04006, doi:10.1029/2008JF001023.

Kwok, R., D.A. Rothrock, H.L. Stern, and G.F. Cunningham, 1995, Determination of the age distribution of sea ice from Lagrangian observations of ice motion, IEEE Trans. Geosci. Remote Sens., vol. 33, pp. 392-400.

Laidre K. L.,  H. Stern, E. W. Born, P. Heagerty, S, Atkinson, Ø. Wiig, N. J. Lunn, E. V. Regehr, R. McGovern, M. Dyck. 2018.  Changes in winter and spring resource selection by polar bears Ursus maritimus in Baffin Bay over two decades of sea-ice loss. Endangered Species Research 36:1-14.

Laidre, K. L., S. N. Atkinson, E. V. Regehr, H. L. Stern, E. W. Born, Ø. Wiig, N. J. Lunn, M. Dyck, P. Heagerty, and B. R.Cohen. 2020. Transient benefits of climate change for a high‐Arctic polar bear (Ursus maritimus) subpopulation. GlobalChange Biology 26:6251‐6265.

Laidre, K., Heide-Jorgensen, H. Stern, and P. Richard, 2012, Unusual narwahl sea ice entrapments and delayed autumn freeze-up trends, Polar Biology, 35, 149-154, doi: 10.007/s00300-001-1036-8

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

Laidre, K.L., E.W. Born, P. Heagerty, Ø. Wiig, H. Stern, R. Dietz, J. Aars, and M. Andersen, 2014, Impacts of multi-decadal sea ice loss on habitat selection of female polar bears (Ursus maritimus) in East Greenland, Polar Biology, submitted.

Lindsay, R.W., and H.L. Stern, “A new Lagrangian model of Arctic sea ice“, J. Phys. Oceanogr., 34, 272-283, 2004.

Lindsay, R.W., and H.L. Stern,’ The RADARSAT geophysical processor system: Quality of sea ice trajectory and deformation estimates‘, J. Atmos. Ocean. Technol., 20, 1333-1347, 2003.

Lindsay, R.W., and H.L. Stern, 1999, Aircraft-based estimates of thin-ice fraction near SHEBA, Proceedings of the Fifth Conference on Polar Meteorology and Oceanography, American Meteorological Society, January 15-20, Dallas.

Lindsay, R.W., J. Zhang, A. Schweiger and M.A. Steele, “Seasonal predictions of ice extent in the Arctic Ocean”, J. Geophys. Res., 113(C2), 2008.

Lindsay, R.W., J. Zhang, A. Schweiger, M.A. Steele and H. Stern, “Arctic Sea Ice Retreat in 2007 Follows Thinning Trend”, J. Clim., 22, 165-176, doi: 10.1175/2008JCLI2521., 2009.

Marsan, D., H. Stern, R. Lindsay, and J. Weiss, “Scale dependence and localization of the deformation of arctic sea ice“, Phys. Rev. Lett., 93, 17, 2004.

The Seattle Times reports on the Arctic-wide analysis of changes in sea ice that have the greatest impact on polar bears, conducted by the PSC’s Harry Stern and Kristin Laidre.

Moritz, R.E., and H.L. Stern,’ Relationships between geostrophic winds, ice strain rates and the piecewise rigid motions of pack ice’, IUTAM Symposium on Scaling Laws in Ice Mechanics and Ice Dynamics, edited by J.P. Dempsey and H.H. Shen, 335-348, Kluwer Academic Publishers, Dordrecht, The Netherlands, 2001.

Atlas Obscura covers a recent study led by former PSC postdoc Donna Hauser, along with Kristin Laidre and Harry Stern. The travel source shares how increased ship traffic in the Arctic increases the vulnerability of many marine mammals, especially the narwhal.

Perovich, D., E. L. Andreas, J. A. Curry, H. Eiken, C. W. Fairall, T. C. Grenfell, P. S. Guest, J. Intrieri, D. Kadko, R. W. Lindsay, M. G. McPhee, J. Morison, R. E. Moritz, C. A. Paulson, W. S. Pegau, P. O. G. Persson, R. Pinkel, J. A. Richter-Menge, T. Stanton, H. Stern, M. Sturm, W. B. Tucker III, and T. Uttal. “Year on ice gives climate insights.” EOS, Trans. Amer. Geophys. Union, 80 (41), 481-486, 1999.

Geographical reports on the findings of an extensive study of polar bear populations published in Biology Letters.  Read the online article with remarks from one of PSC’s contributors to the study, Kristin Laidre.

In search of the Northwest Passage, Captain James Cook was the first to actually probe and chart the ice edge north of Bering Strait. Polar Geography has published Harry Stern’s research of Cook’s exploration of the Arctic and how other expeditions fared in comparison, resulting in a history of sea-ice observations from Cook’s time to the present.

Polar Science Weekend is four days of hands-on activities, live demonstrations and exhibits presented by scientists who work in some of the most remote and challenging places on earth.  Polar Science Weekend is supported by a generous grant from NASA.