17 record(s) found with the tag "carbon dioxide" (multi-year projects are grouped):
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TERRE-NET: Controls on the Release of Contaminants from Gold Tailings at the Giant Mine, Yellowknife, NT
Principal Investigator: Blowes, David W.
Licenced Year(s): 2017
Summary: The objectives of this research project are to: 1) determine the magnitude and rate of release of arsenic and other toxic elements from the Giant Mine tailings to groundwater; 2) evaluate remediation alternatives for tailings management, including the effects of proposed engineered covers; and, 3) apply novel characterization techniques to understand the mechanisms controlling arsenic release. ...


Greenhouse Gas Exchange in the Outer Mackenzie Delta
Principal Investigator: Skeeter, Wesley R
Licenced Year(s): 2017
Summary: The objective of this campaign will be to measure the emission/uptake of methane and carbon dioxide at Fish Island in the outer Mackenzie Delta over a full growing season. This data will be used to determine the carbon balance of the island, and estimate the carbon balance of the land surfaces in the outer Mackenzie Delta. Additionally, the research team will investigate factors influencing the ex...


Biogeochemistry of Lakes in the Mackenzie Delta
Principal Investigator: Lesack, Lance
Licenced Year(s): 2017 2016 2015 2014 2010 2009 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993
Summary: The objective of this research project are to: 1) improve the understanding of microbial carbon-processing in Mackenzie Delta lakes and how it is affected by the changing water levels; and, 2) to decipher the impact of water level changes on the ability of the Mackenzie Delta to affect riverine nutrient flow to the ocean. This work will help resolve what drives microbial communities in Mackenzi...


The frontline of permafrost thaw: a transect of eddy covariance towers across the southern Taiga Plains to better understand changing regional carbon and water budgets
Principal Investigator: Sonnentag, Oliver
Licenced Year(s): 2017 2016 2015
Summary: Through this project the research team will address the following objectives: 1) determine the net effect of permafrost thawing-induced biophysical and biogeochemical feedbacks to the climate system; 2) determine how these two types of feedback differ between the sporadic and discontinuous permafrost zones; 3) determine if s the reported decrease (increase) in net carbon dioxide (methane) exchange...


Development and Testing of Climate Change Monitoring Equipment in the Arctic
Principal Investigator: Layden, Ronald E.
Licenced Year(s): 2016
Summary: Data analysis will help the company to optimize the firmware, battery requirements and testing regimes needed and finalize products that can then be used in any type of remote and cold locations for extended periods with little or no equipment monitoring. Several eosFD devices (carbon dioxide monitoring equipment) will be tested to determine usability requirements and to select a winter test ...


Measuring Carbon Fluxes at Illisarvik with Eddy Covariance
Principal Investigator: Skeeter, Wesley R
Licenced Year(s): 2016
Summary: The study will measure carbon dioxide (CO2) and methane (CH4) fluxes at Illisarvik during the peak of the growing season using a combination of eddy covariance and gas chamber methods. The primary objective will be to determine the magnitude of CO2 and CH4 fluxes and determine whether sequestration offsets emission. Secondary objectives will be to observe the temporal and spatial variability of th...


Variability in peat plateau energy balance and water chemistry along a warming gradient
Principal Investigator: English, Michael C
Licenced Year(s): 2013
Summary: This research is physically based on a peat plateau and a peat bog, both close to Yellowknife. There are two primary objectives to this research. The first involves quantifying surface energy balances in areas where degradation of peat is pronounced and where it is not. Suprapermafrost water from the degraded and non-degraded sites will be analyzed for nutrients and dissolved organic carbon (DOC) ...


Degradation of dissolved organic carbon in Mackenzie Delta lakes and river channels
Principal Investigator: Tank, Suzanne E
Licenced Year(s): 2013 2012
Summary: This study will examine the solar degradation of riverine dissolved organic carbon (DOC) to carbon dioxide (CO2) throughout the Mackenzie River Delta. During the spring runoff peak just before summer solstice, ice-jam flooding inundates the Delta with river water, which spreads out in a relatively thin layer over an extended area and is exposed to 24-hour Arctic sunlight. This water is then slowly...


Towards Long-term Monitoring of the CO2 System in Arctic Rivers
Principal Investigator: Wang, Zhaohui 'Aleck'
Licenced Year(s): 2012 2011 2010
Summary: The objective of this research project is to make time-series measurements of the CO2 system in the Mackenzie River, near Inuvik, Northwest Territories. Monthly water sampling is taking place at the Mackenzie River near Inuvik by technicians from the Aurora Research Institute. Data will be shared with local communities for education purposes as well as annual reports and publications made avail...


Geological carbon in the Mackenzie River Basin: Sources and sinks of atmospheric carbon dioxide
Principal Investigator: Hilton, Robert G
Licenced Year(s): 2017 2013 2011 2010 2009
Summary: The overall aim is to assess the carbon balance of the Mackenzie River Basin and to place constraints on the role of climatic and physical erosion processes in driving carbon dioxide source and sinks to the atmosphere and oceans. More specifically, the researchers aim to quantify the amount of chemical weathering that takes place in the Mackenzie River Basin; to quantify how much weathering of sil...


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