Author Archive

Blackmon, M., B. Boville, F. Bryan, R. Dickinson, P. Gent, J. Kiehl, R. Moritz, D. Randall, J. Shukla, S. Solomon, G. Bonan, S. Doney, I. Fung, J. Hack, E. Hunke, J. Hurrell, J. Kutzbach, J. Meehl, B. Otto-Bliesner, R. Saravanan, E. K. Schneider, L. Sloan, M. Spall, K. Taylor, J. Tribbia, and W. Washington. The Community Climate System Model. Bull. Amer. Meteor. Soc., 82, (11), 2357-2375. 2001.

This is what shows up when the Post Floats into the Outreach Page

The XRFS was built by APL-UW under a NASA contract from the Langley Research Center; it is designed to be deployed down a pre-drilled hole for exploration and elemental analysis of subsurface planetary regolith. 

Born, E.W., A. Heilmann, L. Kielsen Holm, and K.L. Laidre,’ Polar bears in Northwest Greenland: an interview survey about the catch and the climate’, Monographs on Greenland, Copenhagen: Museum Tusculanum Press, 351, 250, 2010.

Boyd, T. J., M. Steele, R. Muench, and J. Gunn, Partial recovery of the Arctic Ocean halocline, Geophys. Res. Lett., 29(14), doi:10.1029/2001GL014047, 2002.

Briegleb, B. P. and B. Light, “A Delta-Eddington Multiple Scattering Parameterization for Solar Radiation in the Sea Ice Component of the Community Climate System Model“, NCAR/TN-472+STR, 100pp, 2007.

C.M. Frantz, V.A. Petryshyn, P.J. Marenco, F.A. Corsetti, A. Tripati, W.M. Berelson (2014) “Dramatic local environmental change during the Early Eocene Climatic Optimum detected using high resolution chemical analyses of Green River Formation stromatolites.” Palaeogeography, Palaeoclimatology, Palaeoecology, V.405:1-15, doi:10.1016/j.palaeo.2014.04.001

Castro, S., G. Wick, and M. Steele, Validation of satellite sea surface temperature analyses in the Beaufort Sea using UpTempO buoys, Rem. Sens. Environ., 187, doi:10.1016/j.rse.2016.10.035, 2016.

September 17, 2019 – Research by Axel Schweiger and Jinlun Zhang in Collaboration with Kevin Wood from JISAO reconstructs sea ice volume and thickness since 1901. 

      Bonnie Light, PSC Chair,bonnie©apl•uw•eduThe Polar Science Center,  40+ Years of Polar ResearchSince its founding following the Arctic Ice Dynamics Experiment (AIDJEX) in 1976, the Polar Science Center has been at the forefront of Polar Research. We conduct Polar Research ranging from tracking microbes living in sea ice, to the massive ice sheets covering Greenland and Antarctica. Our research takes us into the field to collect data and into the lab where theoretical ideas are tested and samples are analyzed.  We study the Polar Regions from space by satellites  and we simulate the Polar World on computers. We build instruments that…

The Bering Sea – lying at the northern end of the Pacific Ocean and north of the Aleutian Chain – is the source of over 50% of the total US fish catch and the home to immense populations of birds and marine mammals. This project uses a state-of-the-art numerical ocean-ice model to investigate prior (and predict future) changes in the Bering Sea ice cover and study the impacts of these changes on Bering Sea marine and eco-systems.

PI: Jinlun ZhangThis project will investigate future changes in the seasonal linkages and interactions among arctic sea ice, the water column, and the marine production cycles and trophic structure as an integrated system. This is a collaborative project led by Jinlun Zhang with Mike Steele, Univ. of WA, Y. Spitz, Oregon State Univ., C. Ashjian, Woods Hole, and R. Campbell, Univ. of Rhode Island.Read More

Description: Mooring, XBT,CBT and chemistry data from the Chukchi Borderland
Geographic Area: Chukchi Borderland
Time Period: 2002
Parameters: XBT, CTD,  mooring
Data Access:
Description: Year-round Mooring data 1990-1991 Throughout the Chukchi Sea
Geographic Area: Chukchi Sea
Time Period: CTD data from 1990 and 1991 throughout the Chukchi Sea, Year-round Mooring data 2002-2004 Northern Chukchi
Data Access:

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).

Codispoti, L.A., V. Kelly, A. Thessen, P. Matrai, S. Suttles, V. Hill, M. Steele, and B. Light, Synthesis of primary production in the Arctic Ocean: III. Nitrate and phosphate based estimates of net community production, Prog. Oceanogr., 110, doi:10.1016/j.pocean.2012.11.006, 2013.

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.

The objectives of this research are to quantify the connection between seasonal warming of arctic surface waters and the absorption of solar energy, and additionally to identify the presence and seasonal cycling of materials responsible for this absorption. Seasonal changes in the attenuation of solar radiation within the sea ice and upper 30m of the water column will be measured at high temporal resolution (hourly) by a new proof of concept buoy system. Temperature and PAR (photosynthetically active radiation) irradiance measurements will be made using optical sensors paired with thermisters within the water column and sea ice. A fluorometer will…

This project will compare in situ measurements of ocean bottom pressure and hydrography with GRACE estimates of time-varying ocean bottom pressure. Arctic Bottom Pressure Recorders have been deployed and extensive hydrographic measurements have been made under other projects. Comparisons with some of these measurements suggest that GRACE can provide sorely needed large-scale, continuous information on the changing Arctic Ocean circulation. Our North Pole in situ measurements are particularly useful for GRACE validation because the GRACE footprint passes over the North Pole more frequently than any other ocean location on earth, making comparisons there robust. GRACE appears to provide our first…

Conway, H., Smith, B., Vaswani, P. et al, “A low-frequency ice-penetrating radar system adapted for use from an airplane: test results from Bering and Malaspina Glaciers, Alaska, USA”, Annals Glaciology, 50(51), 93-97, 2009.

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.

Danielson, S., K. Aagaard, T. Weingartner, S. Martin, P. Winsor, G. Gawarkiewicz, and D. Quadfasel,’ The St. Lawrence polynya and the Bering shelf circulation: New observations that test the models’, J. Geophys. Res., 111, C09023, doi:10.1029/2005JC003268, 2006.

Darby, D.A., J. Ortiz, L. Polyak, S. Lund, M. Jakobsson, and R.A. Woodgate,’ The role of currents and sea ice in both slowly deposited central Arctic and rapidly deposited Chukchi-Alaskan margin sediments’, Global Planet. Change, 68, 56-70, 2009.

Dash, J.G., B.L. Mason and J.S. Wettlaufer,’ Theory of charge and mass transfer in ice-ice collisions’, J. Geophys. Res., 106, 20395-20402, 2001.

PI: Harry Stern
This is a subcontract with Greenland Institute of Natural Resources

Deming, J. W. and K. Junge. ‘‘Colwellia’’, in The Proteobacteria, Part B, Bergey’s Manual of Systematic Bacteriology, G. T. Staley, D. J. Benner, N. R. Krieg, and G. M. Garrity, Eds. (Springer, New York, 2005), 2nd., Vol. 2, pp. 447–454, 2005.

Dettinger, M.D., D.S. Battisti, G.J. McCabe, C.M. Bitz, R.D. Garreaud,,’ Interhemispheric effects of interannual and decadal ENSO-like climate variations on the Americas’,in Present and Past Interhemispheric Climate Linkages in the Americans and their Societal Effects, 1-16, 2001.

Dewey, S., Morison, J., Zhang, J., 2017. An Edge-Referenced Surface Fresh Layer in the Beaufort Sea Seasonal Ice Zone. Journal of Physical Oceanography. doi:10.1175/JPO-D-16-0158.1

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.

Ding Q, Steig EJ: Temperature change on the Antarctic Peninsula linked to the tropical Pacific. Journal of Climate, 26, 7570-7585 (2013).

Ding Q, Steig EJ, Battisti DS, Wallace JM: Influence of the tropics on the Southern Annular Mode. Journal of Climate, 25, 6330-63 (2012).

Dmitrenko, I. A., S. A. Kirillov, V.V. Ivanov, and R. A. Woodgate,’ Mesoscale Atlantic Water Eddy off the Laptev Sea continental slope carries the signature of upstream interaction’, J. Geophys. Res., 113, C07005, doi: 10.1029/ 2007JC00449, 2008.

Dmitrenko, I.A., et al., including R.A. Woodgate,’ Seasonal modification of the Arctic Ocean intermediate water layer off the eastern Laptev Sea continental shelf break’, J. Geophys. Res., 114, doi:10.1029/2008JC005229, 2009.

Donohoe, A.D., K. Armour, A.G, Pendergrass and D.S. Battisti, 2014, Shortwave and longwave contributions to global warming under increasing CO2, Proceedings of the National Academy of Sciences. November 10, 2014, doi:10.1073/pnas.141219

Donohoe, A.D., J. Marshall, D. Ferreira, K. Armour, 2014, The inter-annual variability of tropical precipitation and inter-hemispheric energy transport,  Journal of Climate, 27, 3377–3392. doi: 10.1175/JCLI-D-13-00499.1

Drucker, R., S. Martin, and R. Mortiz,’ Observations of ice thickness and fazil ice in the St. Lawrence Island polynya from satellite imagery, upward looking sonar, and salinity/temperature moorings,’, J. Geophys. Res., 108, 10.1029/2001JC001213, 2003.

Dutrieux P, Rydt JD, Jenkins A, Holland PR, Ha HK, Lee SH, Steig EJ, Ding Q, Abrahamsen EP, Schroder M: Strong sensitivity of Pine Island ice-shelf melting to climatic variability, Science, 343 (6167), 174-178, (2014)

Eicken, H., R. Gradinger, A. Graves, A. Mahoney, I. Rigor, and H. Melling,’ Sediment transport by sea ice in the Chukchi and Beaufort Seas: Increasing importance due to changing ice conditions?’, Deep Sea Research, 2005.

We are using field and remote sensing data to investigate Elevation Change Anomalies (ECAs) discovered recently in the Ross Sea sector of the West Antarctic Ice Sheet (WAIS), which reveal the filling and draining of subglacial lakes.

Test with Email shortcodeAxel Schweiger  (axel©apl•washington•edu)  axel©apl•washington•edu

Seasonal Anomaly Maps — each product compred to the ensemble medianSeasonal Trend Maps — seasonal trends of each variableThis work has been published in the Journal of Climate (Lindsay, R., M. Wensnahan, A. Schweiger, and J. Zhang, 2014: Evaluation of seven different atmospheric reanalysis products in the Arctic. J. Climate, DOI: 10.1175/JCLI-D-13-00014.1. )AbstractAtmospheric reanalyses depend on a mix of observations and model forecasts. In data-sparse regions such as the Arctic, the reanalysis solution is more dependent on the model structure, assumptions, and data assimilation methods than in data-rich regions. Applications such as the forcing of ice-ocean models are sensitive to…

This project has two main objectives: 1) determination of the physical and microbial characteristics and microstructural evolution of sea ice exposed to severe melt; and 2) exploration of the influence of biogenic particles such as sea ice algae, bacteria and polymer gels on the melting behavior of sea ice.

Fahrbach, E., S. Harms, G. Rohardt, M. Schroeder, and R.A. Woodgate,’ The flow of bottom water in the northwestern Weddell Sea’, J. Geophys. Res., 106(C2), 2761-2778, 2001.

Falkner, K., M. Steele, R. Woodgate, J. Swift, K. Aagaard, and J. Morison, Dissolved oxygen extrema in the Arctic Ocean halocline from the North Pole to the Lincoln Sea, Deep-Sea Res. I, 52(7), 1138-1154, doi:10.1016/j.dsr.2005.01.0072005, 2005.

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.

Foldvik, A., T. Gammelsrod, S. Østerhus, E. Fahrback, G. Rohardt, M. Schroder, K.W. Nicholls, L. Padman, and R.A. Woodgate,’ Ice shelf water overflow and bottom water formation in the southern Weddell Sea’, J. Geophys. Res., 109, C02015, 10.1029/2003JC002008, 2004.

PI: Dr. Elizabeth HolmesCo-Investigator for APL: Jinlun ZhangThe effects of climate change are projected to be disproportionately pronounced in polar regions, where changes in the extent of Arctic sea ice will have an effect on all trophic levels. The endangered bowhead whale (Balaena mysticetus) is one of the largest animals in the Arctic, yet they feed on some of the smallest Arctic animals, zooplankton. Therefore, physically-induced bottom-up changes may be quickly reflected in the distribution of bowhead whales. Some of the important threats to bowhead whales include shipping and offshore oil drilling. Loss of sea ice in the Arctic has…