Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"pan-Arctic"”.
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Characterization of the spatial and temporal variability in pan-Arctic, terrestrial hydrology
<p>Arctic hydrology represents an important component of the larger global climate system, and there are signs that significant water-cycle changes, involving complex feedbacks, have occurred. This dissertation explores the methods to estimate components of the arctic hydrological cycle, the …
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Study on Regional Responses of Pan-Arctic Terrestrial Ecosystems to Recent Climate Variability Using Satellite Remote Sensing
… net primary productivity (NPP) for the pan-Arctic basin and Alaska from 1983 to 2005. I developed a satellite remote sensing based evapotranspiration (ET) algorithm using GIMMS NDVI with the above meteorology inputs to assess spatial patterns and temporal trends in ET over the pan-Arctic …
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Study on Regional Responses of Pan-Arctic Terrestrial Ecosystems to Recent Climate Variability Using Satellite Remote Sensing
… net primary productivity (NPP) for the pan-Arctic basin and Alaska from 1983 to 2005. I developed a satellite remote sensing based evapotranspiration (ET) algorithm using GIMMS NDVI with the above meteorology inputs to assess spatial patterns and temporal trends in ET over the pan-Arctic …
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Identifying impacts of non-climatic factors on food security of Indigenous Peoples in the pan-Arctic region
This thesis explores the vulnerability of Arctic Indigenous food systems to food insecurity resulting from the combined impacts of climatic and non-climatic stressors. While climate change poses significant threats to traditional food practices and access, this study emphasizes the importance of …
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Winter vertical migration of Arctic zooplankton
… in zooplankton during the Polar Night in the Arctic Ocean. However, the drivers of this behaviour during an apparent lack of illumination and food are poorly understood, as is its spatial extent across the Arctic Ocean. A novel dataset comprising 58 deployments of moored Acoustic Doppler …
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Continuity and change in north European nordpolitikk in the wake of the cold war: the Barents Euro-Arctic Region (B.E.A.R.)
… regard to the development of the Barents Euro-Arctic Region (BEAR) as a new entity. In studying, also, the forces shaping this region's emergence and political direction, the Nordpolitikk, especially of Norway, is assessed. The paper begins by examining the region geographically, and by …
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A geospatial analysis of Arctic marine traffic
Recent changes in Arctic Ocean climate dynamics and marine activity in the region require re-evaluation of physical operating conditions, ship traffic patterns, and policy requirements. This study used (1) government surveys, (2) vessel reports, and (3) Automatic Identification System (AIS) …
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Radium and mercury dynamics in the Arctic: investigating terrestrial inputs, groundwater discharge, and chemical cycling in a changing climate
The Arctic Ocean is distinctive due to its extreme seasonal variations in temperature and significant terrestrial inputs, including freshwater, carbon, nutrients, and toxins. Of particular concern is mercury (Hg) in its neurotoxic form, methylmercury (MeHg), which is already beginning to adversely …
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Reconstructing late Holocene Artctic climate change using high resolution sediment records from Simpson Lagoon, Alaska and the Colville River alluvial valley
Arctic nearshore environments proximal to large rivers, like Simpson Lagoon, Alaska, potentially contain high-resolution sediment archives that can be utilized to reconstruct paleoclimate variability over the late Holocene. The ongoing, rapid environmental changes recently observed in the Arctic …
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Arctic synoptic activity associated with sea ice variability using self-organizing maps
… synoptic activity and sea ice variability in the Arctic are studied using self-organizing maps (SOMs) to categorize observed weather patterns over the 1979-2010 period. The European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA-interim, or ERAI) provides the daily sea level …
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Radium and Mercury Dynamics in the Arctic: Investigating Terrestrial Inputs, Groundwater Discharge, and Chemical Cycling in a Changing Climate
The Arctic Ocean is distinctive due to its extreme seasonal variations in temperature and significant terrestrial inputs, including freshwater, carbon, nutrients, and toxins. Of particular concern is mercury (Hg) in its neurotoxic form, methylmercury (MeHg), which is already beginning to adversely …
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Thule Iron Use in the Pre-contact Arctic
… culture that lived in the North American Arctic between approximately 1000 AD and 1400 ̶ 1500 AD. The study takes a pan-Arctic perspective to bring together research that has usually been done on a more-limited geographical scale. This viewpoint shows the Thule culture from a view that …
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Arctic daily temperature and precipitation extremes: Observed and simulated physical behavior
<p>ARCTIC DAILY TEMPERATURE AND PRECIPITATION EXTREMES: OBSERVED AND SIMULATED PHYSICAL BEHAVIOR</p> <p>Justin M. Glisan</p> <p>Department of Geological and Atmospheric Sciences, Iowa State University, Ames, Iowa</p> <p>ABSTRACT</p> <p>Simulations using a six-member ensemble of Pan-Arctic WRF (PAW) …
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An improved geography of surface water abundance in lakes and reservoirs
… to coexist with high flow, except high-latitude (pan-Arctic) regions where lake distributions are extensive and thus water storage largely exceeds the flow. Saline water storage is spatially less or negatively correlated to freshwater storage or discharge, thus implicating arid/semiarid climates …