Arctic Field Projects



Project Title: Collaborative Research: Investigating the potential of carbon-14 in polar firn and ice as a tracer of past cosmic ray flux and an absolute dating tool (Award# 1203779)

PI: Petrenko, Vasilii V (vpetrenk@ur.rochester.edu)
Phone: (585) 276.6094 
Institute/Department: U of Rochester, Department of Earth and Environmental Sciences 
IPY Project?
Funding Agency: US\Federal\NSF\GEO\OPP\ARC\ANS
Program Manager: Dr. Henrietta Edmonds (hedmonds@nsf.gov )
Discipline(s): | Cryosphere | Meteorology and Climate | Space Physics |

Project Web Site(s):
NSF_Award_Info: http://www.nsf.gov/awardsearch/showAward.do?AwardN...
Data: https://arcticdata.io/

Science Summary:
This grant will investigate the potential of carbon-14 in ice cores as an absolute dating tool, as a tracer of the past cosmic ray flux and as a recorder of the past fossil fraction of the global methane budget. Cosmic ray particles produce carbon-14 from oxygen-16 directly within near-surface glacial ice and firn. This in-situ produced carbon-14 quickly reacts to form 14C-containing carbon dioxide, carbon monoxide, and methane in the ice matrix. Some or all of the resulting 14C-bearing gases may be lost from the firn to the atmosphere. This research will provide a thorough characterization of in-situ cosmogenic 14C in glacial firn and shallow ice in the Summit region of Greenland. It will examine the retention of cosmogenic 14C in ice grains at all depth levels in the firn column, the partitioning of 14C between carbon dioxide, carbon monoxide, and methane, as well as the production rates and accumulation of cosmogenic 14C in shallow ice below firn close-off. This project will establish a new international collaboration between University of Rochester (UR) and University of Bern and result in novel laboratory and field analytical systems. The data from the study will be made available to the scientific community and the broad public through the ACADIS data service. One graduate student will be trained at UR, and one postdoc and one graduate student will be partially supported at Oregon State University. Three UR undergraduates will be involved in fieldwork and research. The work will support an early career scientist. All of the investigators will continue to participate in public outreach.

Logistics Summary:
This collaboration is between Petrenko (1203779, U of Rochester, lead), Severinghaus (1203686, UCSD) and Brook (1204084, OSU) to study the production and retention of cosmogenic carbon-14 in polar firn. During three years of field work beginning in 2013, teams will drill and harvest ice from a camp in the vicinity of Summit Station, Greenland; they also will sample firn air in 2013. In early May 2013, a team of nine, including three drillers, will travel via the ANG logistics chain to Summit Station. From Summit, they will use snowmachines to reach their field camp located 10km NNW. The team will camp at the site for approximately one month where they will drill cores and collect firn air samples. Researchers will return weekly to Summit Station to resupply food and other stores. At the end of the field season, the team will return to Summit Station and depart via the ANG. CPS will arrange for core transport from Summit, with appropriate cold storage at points en route. During 2014 a field team of eight will return to the Summit Station area, and work from a field camp at the same location as 2013. Cores will be collected using the IDDO Blue Ice Drill, and with the exception of six boxes of samples, the cores will be processed on-site using a propane melter. The team will camp at the site for approximately six weeks with weekly trips to Summit Station for use of station resources. At the end of the field season, the team will return to Summit Station and depart via the ANG logistics chain. CPS will arrange for core transport from Summit, with appropriate cold storage at points en route. During 2015, the third and final year of the project, a team of 9 researchers and two drillers will travel via the ANG logistics chain to Summit Station. From Summit, they will use snow machines to return to their field camp located approximately 10km NNW of the station. The team will camp at the site for approximately 6 weeks where they will drill cores and collect firn air samples. Researchers will process the cores on site using a propane melter to extract gas samples. Researchers will return weekly to Summit Station to resupply food and other stores.

For the combined Petrenko led projects (1203779 and 1406236), CPS will provide ANG airlift for the field team and cargo; en route user days at Kangerlussuaq and Summit Station; field camp and safety equipment from the CPS inventory; construction support for camp setup / takedown and various support requirements (i.e. core storage trench, melter platform, and sample trays); provision of generator support and fuel; provision of food; CPS Camp Coordinator support; and shipment for up to 100 ice core boxes of frozen samples Summit > Kangerlussuaq > NY > NICL. IDDO will provide the drill and related drilling support while in the field. All other logistics will be organized by the researchers and paid through the grant.
SeasonField SiteDate InDate Out#People
2013Greenland - Kangerlussuaq05 / 04 / 2013 06 / 08 / 20139
2013Greenland - Petrenko Camp05 / 08 / 2013 06 / 04 / 20139
2013Greenland - Summit05 / 06 / 2013 06 / 06 / 20139
2014Greenland - Kangerlussuaq05 / 12 / 2014 06 / 30 / 201410
2014Greenland - Petrenko Camp05 / 15 / 2014 06 / 27 / 201410
2014Greenland - Summit05 / 14 / 2014 06 / 28 / 201410
2015Greenland - Kangerlussuaq05 / 29 / 2015 07 / 01 / 20155
2015Greenland - Petrenko Camp06 / 03 / 2015 06 / 28 / 20155
2015Greenland - Summit06 / 01 / 2015 06 / 03 / 20155
 


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Parameters used to generate this report:, Grant# = "1203779", IPY = "ALL" 
     Number of projects returned based on your query parameters = 1
 
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