Performance Element Reporting Logs

Total Page:16

File Type:pdf, Size:1020Kb

Performance Element Reporting Logs INTERAGENCY ARCTIC RESEARCH POLICY COMMITTEE 2018 PERFORMANCE ELEMENT REPORTING LOGS The performance element reporting logs described here represent actions taken for all IARPC Collaboration Teams during FY 2018, presented in order of appearance in Arctic Research Plan 2017- 2021 IARPC Collaboration Teams Health & Well-being Collaboration Team (p. 2) Atmosphere Collaboration Team (p. 23) Sea Ice Collaboration Team (p. 55) Marine Ecosystems Collaboration Team (p. 82) Glaciers & Sea Level Collaboration Team (p. 104) Permafrost Collaboration Team (p. 127) Terrestrial Ecosystems Collaboration Team (p. 153) Coastal Resilience Collaboration Team (p. 169) Environmental Intelligence Collaboration Team (includes Arctic Observing, Data and Modeling Sub-teams) (p. 206) These Federal agencies comprise IARPC: Department of Commerce (DOC), Department of Defense (DOD), Department of Energy (DOE), Department of Health and Human Services (HHS), Department of Homeland Security (DHS), Department of the Interior (DOI), Department of State (DOS), Department of Transportation (DOT), Environmental Protection Agency (EPA), Marine Mammal Commission (MMC), National Aeronautics and Space Administration (NASA), National Science Foundation (NSF, Chair), Office of Management and Budget (OMB), Office of Science and Technology Policy (OSTP), Smithsonian Institution (SI), and United States Department of Agriculture (USDA). Other agencies also contribute to implementation of the Arctic Research Plan. 1 Health & Well-being Collaboration Team Performance Element Reporting Log FY2018 (Some links in this summary require an account on IARPC Collaborations Website. Please visit www.iarpccollaborations.org to request an account.) 1.1 Health & Well-being 1.1 Support integrative approaches to human health that recognize the connections among people, wildlife, the environment, and climate. • 1.1.1 (In progress) In collaboration with the Alaska Native Tribal Health Consortium (ANTHC), advance and support a regional One Health approach for assessing interactions at the Arctic human-animal-environment interface to enhance understanding of, and response to, the complexities of climate change for Arctic residents; DOI-FWS (Lead), EPA (Lead), HHS-CDC (Lead), NOAA (Lead), USDA-NIFA (Lead), DOI-USGS, DOS, NASA o Quarterly Alaska One Health workgroup meetings continue to bring together partners across disciplines to engage on this topic. These workgroup meetings are advertised on the IARPC website and were recorded and archived on the ANTHC LEO Website: (http://www.leonetwork.org/en/leo/hubpage/ALASKA?show=one-health-group. Topics covered during the past year include: surveillance to detect emerging threats, pathogen exposures among polar bears, the State of Alaska report on health impacts of climate change, zoonotic diseases without pandemic potential, harmful algal blooms, antimicrobial resistance among E. coli found in migratory birds. (Oct 10, 2018 - Completed) o In May 2018, The US Department of State hosted 10 health experts from five Arctic nations (Canada, Iceland, Norway, Finland, Russia) to visit the US for a One Health study tour under the International Visitor Leadership Program. This include a one-week trip in Alaska to meet with partners engaged in One Health collaborations including from State, Federal, Tribal entities and the University of Alaska. IVLP alumni are eligible to apply for funding support through State Department and it is hoped that this visit stimulates collaborations around Arctic One Health research. (Oct 10, 2018 - Completed) o The State of Alaska published a report entitled, “Assessment of the Potential Health Impacts of Climate Change in Alaska.” This includes a review of known and anticipated threats, with recommendations for action and planning. The report can be found here: http://epibulletins.dhss.alaska.gov/Document/Display?DocumentId=1962 (Oct 10, 2018 - Completed) o a. The research described by NASA in 2017 regarding its numerous ABoVE projects continues, with several relevant publications produced in FY 18. These projects are assessing how changing wildlife habitat are impacting key wildlife species in the IARPC domain, including caribou habitats in northeastern Alaska, Alaska’s North Slope, and the NWT, nesting habitats in the Yukon-Kuskokwim Delta, and Dall Sheep habitat across its entire range. All this research involves direct interactions with local and regional native organizations, including development and carrying out of research activities and consultation regarding information needs. Mahoney, P.j. et al. (2018) Navigating 2 snowscapes: scale-dependent responses of mountain sheep to snowpack properties. Ecological Applications. doi: 10.1002/eap.1773 van de Kerk, M., et al. 2018. Range-wide variation in the effect of spring snow phenology on Dall sheep population dynamics. Environmental Research Letters. doi: 10.1088/1748-9326/aace64 Finnegan, L., et al. 2018. Natural regeneration on seismic lines influences movement behaviour of wolves and grizzly bears. PLOS ONE. 13(4), e0195480. doi: 10.1371/journal.pone.0195480 Sivy, K. j., et al. 2018. Critical snow density threshold for Dall sheep (Ovis dalli dalli). Canadian Journal of Zoology. doi: 10.1139/cjz-2017-0259 Tucker, M. A., et al. 2018. Moving in the Anthropocene: Global reductions in terrestrial mammalian movements. Science. 359(6374), 466-469. doi: 10.1126/science.aam9712 Verbyla, D., et al. 2017. Remote Sensing of 2000-2016 Alpine Spring Snowline Elevation in Dall Sheep Mountain Ranges of Alaska and Western Canada. Remote Sensing. 9(11), 1157. doi: 10.3390/rs9111157 b. The research described in 2017 continues. As a general description, ABoVEresearch is being conducted on how changes to ecosystem and environmental conditions caused by wildfires are impacting access to ecosystem services in Interior Alaska. This research involves collaborations with subsistence harvesters. c. The research described in 2017 continues, see PE 7.3.2. As noted in 2017, ABoVEresearchers are supporting a cross-cutting activity (between the Atmospheric, TE, and HWB CTs) to improve information on wildland fire smoke. d. The research described in 2017 continues, with several relevant publications produced in FY 18. As described in 2017, the ABoVE Science Team is carrying out a synthesis activity focused on a major scientific data and analysis gap that is specific to Arctic and Boreal regions - the role of snow and snow datasets to enable understanding of wildlife movement & human accessibility to ecosystem services. See publications reported in a.) related to snow, as well as: Pan, C.G., et al. 2018. Rain-on-snow events in Alaska, and their frequency and distribution from satellite observations. Environmental Research Letters 13, 075004. e. The research described in 2017 continues. As first reported in 2017, the ABoVEScience Team has initiated a synthesis activity focused on both the response of wildlife and the availability of ecosystem services to productivity changes (i.e. greening and browning trends) in Arctic and Boreal regions. (Sep 27, 2018 - Completed) o As part of ANTHC’s EPA GAP grant, program staff attended and provided logistical assistance to the quarterly One Health Group meetings held in person and via Adobe Connect. Participants include technical experts from state/territorial and federal agencies, academic institutions, and tribal organizations (U.S. and Canada) on topics related to human, wildlife and ecological health. A quarterly meeting was held in April with a presentation on Zoonotic diseases with pandemic potential by Dr. jacques Godfroid and a presentation titled Assessment of the Potential Health Impacts of Climate Change in Alaska by Sarah Yoder. One Health Group webinars are archived here: http://www.leonetwork.org/en/leo/hubpage/ALASKA?show=one-health-group. Program staff attended three of ANTHC’s Clinical & Research Services consultation committee meetings to provide feedback and suggestions to improve research that is respectful and culturally sensitive for the Alaska Native community. NOTE: Our colleagues at DOS are the POCs for several activities around the approved One Health Arctic Council project. EPA has not been involved in tabletop preparedness exercise follow-on activities. (Sep 4, 2018 - Completed) 3 o The May HWCT & ACT May 2018 meeting focused on wildfire forecasting—potential tools for community applications (https://www.iarpccollaborations.org/members/events/10564). This meeting sought to answer the questions: § Are we getting the right tools to the right people? § What are gaps and what are the next steps to fill those gaps? The opportunity to reconvene this group and perhaps advise state/regions/borough on how to coordinate different toolsets to help wildfire response was discussed. Presentations: Recap from AOSST/TECT meeting on Observing system applications & gaps for wildfire smoke detection & forecasting (Sandy Starkweather) LEO Network: how to use the network for ground observations and to stand up projects on specific fires and outreach efforts to tribes on smoke preparedness: clean rooms, HEPA filters, identifying at-risk populations- Mike Brubaker (ANTHC) UAF Smoke Project: ongoing work on simulating transport of smoke from Alaskan wildfires- Martin Stuefer (UAF) (Jun 5, 2018 - Completed) o At the April 2018 HWCT/One Health Quarterly Meeting (https://www.iarpccollaborations.org/members/events/10551) there was an involved discussion of brucellosis in marine mammals. Sarah Yoder provided a helpful overview of the Assessment of the Potential
Recommended publications
  • Tidal Modulation of Antarctic Ice Shelf Melting Ole Richter1,2, David E
    Tidal Modulation of Antarctic Ice Shelf Melting Ole Richter1,2, David E. Gwyther1, Matt A. King2, and Benjamin K. Galton-Fenzi3 1Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Hobart, TAS, 7001, Australia. 2Geography & Spatial Sciences, School of Technology, Environments and Design, University of Tasmania, Hobart, TAS, 7001, Australia. 3Australian Antarctic Division, Kingston, TAS, 7050, Australia. Correspondence: Ole Richter ([email protected]) This is a non-peer reviewed preprint submitted to EarthArXiv. This preprint has also been submitted to The Cryosphere for peer review. 1 Abstract. Tides influence basal melting of individual Antarctic ice shelves, but their net impact on Antarctic-wide ice-ocean interaction has yet to be constrained. Here we quantify the impact of tides on ice shelf melting and the continental shelf seas 5 by means of a 4 km resolution circum-Antarctic ocean model. Activating tides in the model increases the total basal mass loss by 57 Gt/yr (4 %), while decreasing continental shelf temperatures by 0.04 ◦C, indicating a slightly more efficient conversion of ocean heat into ice shelf melting. Regional variations can be larger, with melt rate modulations exceeding 500 % and temperatures changing by more than 0.5 ◦C, highlighting the importance of capturing tides for robust modelling of glacier systems and coastal oceans. Tide-induced changes around the Antarctic Peninsula have a dipolar distribution with decreased 10 ocean temperatures and reduced melting towards the Bellingshausen Sea and warming along the continental shelf break on the Weddell Sea side. This warming extends under the Ronne Ice Shelf, which also features one of the highest increases in area-averaged basal melting (150 %) when tides are included.
    [Show full text]
  • 2010-2011 Science Planning Summaries
    Find information about current Link to project web sites and USAP projects using the find information about the principal investigator, event research and people involved. number station, and other indexes. Science Program Indexes: 2010-2011 Find information about current USAP projects using the Project Web Sites principal investigator, event number station, and other Principal Investigator Index indexes. USAP Program Indexes Aeronomy and Astrophysics Dr. Vladimir Papitashvili, program manager Organisms and Ecosystems Find more information about USAP projects by viewing Dr. Roberta Marinelli, program manager individual project web sites. Earth Sciences Dr. Alexandra Isern, program manager Glaciology 2010-2011 Field Season Dr. Julie Palais, program manager Other Information: Ocean and Atmospheric Sciences Dr. Peter Milne, program manager Home Page Artists and Writers Peter West, program manager Station Schedules International Polar Year (IPY) Education and Outreach Air Operations Renee D. Crain, program manager Valentine Kass, program manager Staffed Field Camps Sandra Welch, program manager Event Numbering System Integrated System Science Dr. Lisa Clough, program manager Institution Index USAP Station and Ship Indexes Amundsen-Scott South Pole Station McMurdo Station Palmer Station RVIB Nathaniel B. Palmer ARSV Laurence M. Gould Special Projects ODEN Icebreaker Event Number Index Technical Event Index Deploying Team Members Index Project Web Sites: 2010-2011 Find information about current USAP projects using the Principal Investigator Event No. Project Title principal investigator, event number station, and other indexes. Ainley, David B-031-M Adelie Penguin response to climate change at the individual, colony and metapopulation levels Amsler, Charles B-022-P Collaborative Research: The Find more information about chemical ecology of shallow- USAP projects by viewing individual project web sites.
    [Show full text]
  • Recent Ice Mass Loss in Northwestern Greenland : Results of the GRENE Greenland Project and Overview of the Arcs Title Project
    Recent ice mass loss in northwestern Greenland : Results of the GRENE Greenland project and overview of the ArCS Title project Sugiyama, Shin; Tsutaki, Shun; Sakakibara, Daiki; Saito, Jun; Ohashi, Yoshihiko; Katayama, Naoki; Podolskiy, Author(s) Evgeny; Matoba, Sumito; Funk, Martin; Genco, Riccardo Citation 低温科学, 75, 1-13 Issue Date 2017-03-31 DOI 10.14943/lowtemsci.75.1 Doc URL http://hdl.handle.net/2115/65005 Type bulletin (article) File Information 3_1-13.pdf Instructions for use Hokkaido University Collection of Scholarly and Academic Papers : HUSCAP 低温科学 75 (2017) 1-13 doi: 10.14943/lowtemsci. 75. 1 Recent ice mass loss in northwestern Greenland: Results of the GRENE Greenland project and overview of the ArCS project Shin Sugiyama1*, Shun Tsutaki1,2,3, Daiki Sakakibara1,4, Jun Saito1,5, Yoshihiko Ohashi1,5, Naoki Katayama1,5, Evgeny Podolskiy4, Sumito Matoba1, Martin Funk6, Riccardo Genco7 Received 24 November 2016, accepted 11 January 2017 The Greenland ice sheet and peripheral ice caps are rapidly losing mass. This mass change has been captured by satellite remote sensing, but more detailed investigations are necessary to understand the spatiotemporal variations and mechanism of the ice loss. It has increased particularly in northwestern Greenland, but in-situ data for northern Greenland are generally sparse. To better understand the ice mass loss in northwestern Greenland, we studied the ice sheet, ice caps and calving glaciers in the Qaanaaq region, as a part of the Green Network of Excellence (GRENE) Arctic Climate Change Research Project. Field and satellite observations were performed to measure the mass loss of the ice caps and calving glaciers in the region.
    [Show full text]
  • Rapport Final De La Quarante Et Unième Réunion Consultative Du Traité Sur Lڕantarctique
    5DSSRUWߑQDO GHODTXDUDQWHHWXQLªPH 5«XQLRQFRQVXOWDWLYH QWDUFWLTXH$ڕGX7UDLW«VXUO RÉUNION CONSULTATIVE DU TRAITÉ SUR L’ANTARCTIQUE 5DSSRUWߑQDO GHODTXDUDQWHHWXQLªPH 5«XQLRQFRQVXOWDWLYH GX7UDLW«VXU QWDUFWLTXH$ڕO Buenos Aires, Argentine 13 - 18 mai 2018 Volume II Secrétariat du Traité sur l’Antarctique Buenos Aires 2018 Publié par : Secretariat of the Antarctic Treaty Secrétariat du Traité sur l’Antarctique ɋɟɤɪɟɬɚɪɢɚɬȾɨɝɨɜɨɪɚɨɛȺɧɬɚɪɤɬɢɤɟ Secretaría del Tratado Antártico Maipú 757, Piso 4 C1006ACI Ciudad Autónoma Buenos Aires - Argentina Tel: +54 11 4320 4260 Fax: +54 11 4320 4253 Ce rapport est également disponible à : www.ats.aq (version numérique) et exemplaires achetés en ligne ISSN 2346-9900 ISBN (vol. II): 978-987-4024-72-5 ISBN (œuvre complète): 978-987-4024-64-0 7DEOHGHVPDWLªUHV VOLUME I Acronymes et abréviations 9 PARTIE I. RAPPORT FINAL 11 5DSSRUW¿QDO 2. Rapport du CPE XXI 67 $SSHQGLFHV Appendice 1 : Ordre du jour provisoire de la XLIIe RCTA, groupes de travail et répartition des points de l’ordre du jour 143 Appendice 2 : Communiqué du pays hôte 145 PARTIE II. MESURES, DÉCISIONS ET RÉSOLUTIONS 0HVXUHV Mesure 1 (2018) : Zone spécialement protégée de l’Antarctique no 108 (île Green, îles Berthelot, péninsule antarctique) : Plan de gestion révisé 151 Mesure 2 (2018) : Zone spécialement protégée de l’Antarctique no 117 (île Avian, baie Marguerite, péninsule antarctique) : Plan de gestion révisé 153 Mesure 3 (2018) : Zone spécialement protégée de l’Antarctique no 132 (péninsule Potter, île du Roi-George [Isla 25 de Mayo], îles Shetland
    [Show full text]
  • World Glacier Inventory — Inventaire Mondial Des Glaciers
    World Glacier Inventory — Inventaire mondial des Glaciers (Proceedings of the Riederalp Workshop, September 1978; Actes de l'Atelier de Riederalp, septembre 1978): 1AHS-AISH Publ. no. 126, 1980. West Greenland outlet glaciers: an inventory of the major iceberg producers R.C. Koilmeyer Abstract. By an international treaty between 22 nations involved in North Atlantic shipping, the United States Coast Guard has been assigned a statutory mission to act as the International Ice Patrol. The International Ice Patrol was formed shortly after the iceberg sinking of the RMS Titanic. Ice Patrol duties include studies of the current conditions affecting the drift and persistence of icebergs in the North Atlantic Ocean and the glacial origin of the ice. In 1968 the US Coast Guard commenced an examination of the major iceberg producing glaciers along the west coast of Greenland. This programme, called the West Greenland Glacier Survey, is attempting to visit and revisit every major outlet glacier along the western edge of the ice sheet. Terminus locations have been surveyed along with height measurements on 27 major outlet glaciers. A total of 59 glaciers have been photo-documented. Most of the glaciers exhibit retreat. Les glaciers émissaires du Groenland occidental: un inventaire des principaux producteurs d'icebergs Résumé. Un traité international signé entre 22 pays engagés dans le commerce maritime de l'Atlantique Nord a confié à la Garde Côtière des EU la mission d'agir en tant que Patrouille Internationale des Glaces. Cette patrouille a été créée à la suite du naufrage du RMS Titanic, survenu à la suite d'une collision avec un iceberg.
    [Show full text]
  • Déglaciation De La Vallée Supérieure De L'outaouais, Le Lac Barlow Et Le Sud Du Lac Ojibway, Québec
    Document généré le 2 oct. 2021 22:05 Géographie physique et Quaternaire Déglaciation de la vallée supérieure de l’Outaouais, le lac Barlow et le sud du lac Ojibway, Québec Déglaciation of the Upper Ottawa River Valley, Lake Barlow and South of Lake Ojibway, Québec Deglaziation des oberen Tales des Outaouais Flusses, des Barlow Sees, und des sülichen Ojibway Sees, Québec Jean Veillette Volume 37, numéro 1, 1983 Résumé de l'article Cet article propose une séquence de déglaciation pour une région située à l'est URI : https://id.erudit.org/iderudit/032499ar du lac Témiscamingue. La séquence est basée sur la cartographie des DOI : https://doi.org/10.7202/032499ar sédiments superficiels, sur de nombreuses marques d'écoulement glaciaire et sur des âges radiocarbones. Le tracé de la moraine d'Harricana se prolonge sur Aller au sommaire du numéro une longueur additionnelle de 125 km. L'extrémité sud de la moraine, au lac Témiscamingue, se rattache à la moraine du lac McConnell du côté ontarien, et il est probable que les deux fassent partie du même ensemble morainique. Plus Éditeur(s) de 400 mesures d'altitude prises sur des limites de délavage marquant le niveau maximal glaciolacustre et sur des hauts points de la plaine argileuse Les Presses de l'Université de Montréal (varves) indiquent qu'une profondeur d'eau de l'ordre de 50 m est requise pour la sédimentation des varves dans cette région. La zone intermédiaire ISSN comprend les surfaces ennoyées par les eaux proglaciaires, mais d'une profondeur de moins de 50 m. La valeur de Mysis relicta comme indicateur 0705-7199 (imprimé) biologique de l'aire d'extension paléolacustre maximale est mise en doute.
    [Show full text]
  • Identifying Spatial Variability in Greenland's Outlet Glacier
    ORIGINAL RESEARCH published: 13 July 2018 doi: 10.3389/feart.2018.00090 Identifying Spatial Variability in Greenland’s Outlet Glacier Response to Ocean Heat David F. Porter 1*, Kirsty J. Tinto 1, Alexandra L. Boghosian 1, Beata M. Csatho 2, Robin E. Bell 1 and James R. Cochran 1 1 Marine Geology and Geophysics, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, 2 Department of Geology, University of Buffalo, Buffalo, NY, United States Although the Greenland ice sheet is losing mass as a whole, patterns of change on both local and regional scales are complex. Spatial statistics reveal large spatial variability of dynamic thinning rates of Greenland’s marine-terminating glaciers between 2003 and 2009; only 18% of glacier thinning rates co-vary with neighboring glaciers. Most spatially-correlated thinning rates are clusters of stable glaciers in the Thule, Scoresby Sund, and Southwest regions. Conversely, where spatial-autocorrelation is low, individual glaciers are more strongly controlled by local, glacier-scale features than by regional influences. We investigate possible sources of local control of oceanic forcing by Edited by: combining grounding line depths and ocean model output to estimate mean ocean heat Alun Hubbard, UiT The Arctic University of Norway, content adjacent to 74 glaciers. Linear regression models indicate stronger correlation of Norway dynamic thinning rates with ocean heat content compared to those with grounding line Reviewed by: depths alone. The correlation between ocean heat and dynamic thinning is robust for Ellyn Mary Enderlin, all of Greenland except glaciers in the West, and strongest in the Southeast (R2 ∼ 0.81 University of Maine, United States Martin Truffer, ± 0.15, p = 0.009), implying that glaciers with deeper grounded termini here are most University of Alaska Fairbanks, sensitive to changes in ocean forcing.
    [Show full text]
  • Ice-Shelf Melting Around Antarctica with Field Data and an Error Propagation Anal- Ysis (17) to a Precision of 7 to 25%, Average 10%, E
    REPORTS 18. VPDB is a terrestrial isotopes standard. 30. T. D. Swindle, AIP Conf. Proc. 341, 175 (1994). 39. R. C. Wiens, R. O. Pepin, Geochim. Cosmochim. Acta 52, 19. P. B. Niles, W. V. Boynton, J. H. Hoffman, D. W. Ming, 31. T. D. Swindle, J. H. Jones, J. Geophys. Res. 102, 1671 295–307 (1988). D. Hamara, Science 329, 1334–1337 (2010). (1997). 40. D. Bogard, F. Horz, Meteoritics 21, 337 (1986). 20. V. A. Krasnopolsky, J. P. Maillard, T. C. Owen, R. A. Toth, 32. Details of measurement procedures and treatment of 41. R. O. Pepin, Nature 317, 473–475 (1985). M. D. Smith, Icarus 192, 396–403 (2007). uncertainties are provided in the supplementary 42. R. O. Pepin, Icarus 111, 289–304 (1994). 21. D. D. Bogard, P. Johnson, Science 221, 651–654 (1983). materials on Science Online. 43. T. Owen, A. Bar-Nun, Icarus 116, 215–226 (1995). 22. R. H. Carr, M. M. Grady, I. P. Wright, C. T. Pillinger, 33. The turbomolecular pumps on SAM are expected to 44. P. R. Mahaffy et al., J. Geophys. Res. Planets 105, Nature 314, 248–250 (1985). provide a more stable pressure of noble gas in the mass 15061–15071 (2000). 23. H. Y. McSween Jr., Meteoritics 29, 757–779 (1994). spectrometer ion source compared with the small ion 45. B. M. Jakosky, J. H. Jones, Rev. Geophys. 35,1–16 (1997). 24. U. Ott, Geochim. Cosmochim. Acta 52, 1937–1948 (1988). pumps used on Viking. 25. U. Ott, F. Begemann, Meteoritics 20, 721 (1985). 34.
    [Show full text]
  • Dynamic Changes in Outlet Glaciers in Northern Greenland from 1948 To
    The Cryosphere Discuss., https://doi.org/10.5194/tc-2018-17 Manuscript under review for journal The Cryosphere Discussion started: 9 February 2018 c Author(s) 2018. CC BY 4.0 License. Dynamic changes in outlet glacier s in northern Greenland from 1948 to 2015 Emily A. Hill 1 , J. Rachel Carr 1 , Chris R. Stokes 2 , G. Hilmar Gudmundsson 3 1 School of Geography, Politics, and Sociology, Newcastle University, Newcastle - upon - Tyne, NE1 7RU, UK 5 2 De partment of Geography, Durham University, Durham, DH1 3TQ , UK 3 Department of Geography and Environmental Sciences, Northumbria University, Newcastle - upon - Tyne, NE1 8ST , UK Correspondence to : Emily A. Hill ( [email protected] ) Abstract The Greenland Ice Sheet (GrIS) is losing mass in response to r ec ent climatic and oceanic warming. Since the mid - 1990s , 10 marine - terminating outlet glaciers across the GrIS have retreated, accelerated and thinned, but recent changes in northern Greenland have been comparatively understudied. Consequently, t he dynamic response (i.e. changes in surface elevation and velocity ) of these outlet glaciers to changes a t their termini , particularly calving from floa ting ice tongues, remains unknown. Here we use satellite imagery and historical maps to produce a n unprecedented 68 - year record of terminus change across 18 major outlet glaciers and combi ne this with previously published surface elevation and vel ocity dat a sets . Overall, recent (1995 – 15 2015) retreat rates were higher than at any time in the previous 47 years , but change - point analysis reveals three categories of frontal position change: (i) minimal change followed by steady and continuous retreat, (ii) minima l change followed by a switch to a period of short - lived rapi d retreat, (iii) glaciers that underwent cycles of advance and retreat.
    [Show full text]
  • Download a Full Copy of Alaska Park Science 18
    National Park Service U.S. Department of the Interior Alaska Park Science Alaska Region Understanding and Preparing for Alaska's Geohazards Volume 18, Issue 1 Cape Krusenstern Alaska Park Science National Monument Volume 18, Issue 1 August 2019 Bering Land Bridge Yukon-Charley Rivers National Preserve National Preserve Denali National Editorial Board: Park and Preserve Leigh Welling Wrangell-St Elias National Debora Cooper Park and Preserve Jim Lawler Jennifer Pederson Weinberger Lake Clark National Park and Preserve Guest Editor: Chad Hults Managing Editor: Nina Chambers Kenai Fjords Katmai National Glacier Bay National Design: Nina Chambers National Park Park and Preserve Park and Preserve Contact Alaska Park Science at: [email protected] Aniakchak National Monument and Preserve Alaska Park Science is the semi-annual science journal of the National Park Service Alaska Region. Each issue highlights research and scholarship important to the stewardship of Alaska’s parks. Publication in Alaska Park Science does not signify that the contents reflect the views or policies of the National Park Service, nor does mention of trade names or commercial products constitute National Park Service endorsement or recommendation. Alaska Park Science is found online at https://www.nps.gov/subjects/alaskaparkscience/index.htm Table of Contents Geohazards in Alaska's National Parks Risk and Recreation in a Glacial Spring Breakup on the Yukon: What C. Hults, D. Capps, and E. Bilderback ................1 Environment: Understanding Glacial Lake Happens When the Ice Stops Outburst Floods at Bear Glacier in Kenai S. Lindsey .......................................................71 The 2015 Taan Fiord Landslide and Tsunami Fjords National Park B. Higman, M. Geertsema, D.
    [Show full text]
  • Article Is Available Bevan, S
    The Cryosphere, 12, 3243–3263, 2018 https://doi.org/10.5194/tc-12-3243-2018 © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License. Dynamic changes in outlet glaciers in northern Greenland from 1948 to 2015 Emily A. Hill1, J. Rachel Carr1, Chris R. Stokes2, and G. Hilmar Gudmundsson3 1School of Geography, Politics, and Sociology, Newcastle University, Newcastle-upon-Tyne, NE1 7RU, UK 2Department of Geography, Durham University, Durham, DH1 3LE, UK 3Department of Geography and Environmental Sciences, Northumbria University, Newcastle-upon-Tyne, NE1 8ST, UK Correspondence: Emily A. Hill ([email protected]) Received: 19 January 2018 – Discussion started: 9 February 2018 Revised: 22 August 2018 – Accepted: 8 September 2018 – Published: 9 October 2018 Abstract. The Greenland Ice Sheet (GrIS) is losing mass 1 Introduction in response to recent climatic and oceanic warming. Since the mid-1990s, tidewater outlet glaciers across the ice sheet Mass loss from the Greenland Ice Sheet (GrIS) has acceler- have thinned, retreated, and accelerated, but recent changes ated since the early 2000s, compared to the 1970s and 1980s in northern Greenland have been comparatively understud- (Kjeldsen et al., 2015; Rignot et al., 2008), and could con- ied. Consequently, the dynamic response (i.e. changes in tribute 0.45–0.82 m of sea level rise by the end of the 21st surface elevation and velocity) of these outlet glaciers to century (Church et al., 2013). Recent mass loss has been changes at their termini, particularly calving from floating ice attributed to both a negative surface mass balance and in- tongues, is poorly constrained.
    [Show full text]
  • Ice Front and Flow Speed Variations of Marine-Terminating Outlet Glaciers Along the Coast of Prudhoe Land, Northwestern Greenland
    Journal of Glaciology (2018), 64(244) 300–310 doi: 10.1017/jog.2018.20 © The Author(s) 2018. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons. org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. Ice front and flow speed variations of marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland DAIKI SAKAKIBARA,1,2 SHIN SUGIYAMA2,1 1Arctic Research Center, Hokkaido University, Sapporo, Japan 2Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan Correspondence: Daiki Sakakibara <[email protected]> ABSTRACT. Satellite images were analyzed to measure the frontal positions and ice speeds of 19 marine- terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland from 1987 to 2014. − All the studied glaciers retreated over the study period at a rate of between 12 and 200 m a 1, with a − median (mean) retreat rate of 30 (40) m a 1. The glacier retreat began in the year ∼2000, which coin- cided with an increase in summer mean air temperature from 1.4 to 5.5 °C between 1996 and 2000 in − this region. Ice speed near the front of the studied glaciers ranged between 20 and 1740 m a 1 in 2014, and many of them accelerated in the early 2000s. In general, the faster retreat was observed at the gla- ciers that experienced greater acceleration, as represented by Tracy Glacier, which experienced a − − retreat of 200 m a 1 and a velocity increase of 930 m a 1 during the study period.
    [Show full text]