Skip to main content
Advanced Search

Filters: Tags: arctic (X) > Extensions: Budget (X)

4 results (9ms)   

Filters
Date Range
Extensions
Types
Contacts
Categories
Tag Types
Tag Schemes
View Results as: JSON ATOM CSV
thumbnail
Climate change is already affecting ecosystems, and will likely trigger significant and permanent changes in both ecological and human communities. Such transformations are already occurring in the Arctic region of Alaska, where temperatures are warming at twice the global average and causing some ecosystems to transition to new states. Arctic warming has led to coastal erosion that has forced human communities to relocate and a loss of sea ice that has forced marine mammals, such as polar bears and walrus, to adapt to a more terrestrial mode of living. Meanwhile, in the Great Plains of the U.S., past interactions between land and water use during the Dust Bowl and recent high rates of depletion of the Ogallala...
thumbnail
In Arctic and sub-Arctic regions, snow plays a crucial role in atmospheric and hydrologic systems and has a major influence on the health and function of regional ecosystems. Warming temperatures may have a significant impact on snow and may therefore affect the entire water cycle of the region. A decrease in precipitation in the form of snow, or “snow drought”, can manifest in several ways including changes to total snowfall amounts, snow accumulation, and the timing/length of the snow season. Understanding these changes is then critical for understanding and predicting a variety of climate impacts to wildlife and ecosystems. However, little research has been conducted to date to understand how this change may...
thumbnail
Permanently frozen ground, known as permafrost, is a critical feature of the Arctic landscape. As temperatures warm, permafrost is thawing, with potentially adverse impacts to infrastructure, communities, and the structure and function of Arctic ecosystems. However, the processes leading to changes in permafrost are not well understood, and there is a need to better understand the vulnerability of permafrost to thaw. Addressing these gaps in information regarding permafrost characteristics and dynamics, and what these changes will mean for human communities and ecosystems, will support management and planning efforts. This project seeks to address these gaps through several mechanisms. First researchers have synthesized...
thumbnail
Permafrost is a layer of perennially frozen soil that primarily exists in and around the Arctic and Antarctic regions of the world. While a shallow near-surface soil layer (called active layer) thaws during the summer and re-freezes in the winter, the underlying permafrost remains perennially frozen, often underlying buildings, roads, and other infrastructure. As warmer temperatures become more common, thawing of permafrost could have major consequences for Alaska. Where thawing has already occurred, dramatic changes in ecosystems and existing infrastructure are evident. For example, thawing permafrost along the ocean shore and riverbanks in Northern Alaska is causing substantial coastal erosion and is impacting...
    map background search result map search result map Assessing Permafrost Changes and Related Impacts on Alaskan Infrastructure and Communities Snow Drought: Recognizing and Understanding its Impacts in Alaska Permafrost Change and Impacts on Infrastructure and Resources in Alaska: A Synthesis of Past Work Adaptation Strategies in the Face of Climate-Driven Ecological Transformation: Case Studies from Arctic Alaska and the U.S. Great Plains Assessing Permafrost Changes and Related Impacts on Alaskan Infrastructure and Communities Snow Drought: Recognizing and Understanding its Impacts in Alaska Adaptation Strategies in the Face of Climate-Driven Ecological Transformation: Case Studies from Arctic Alaska and the U.S. Great Plains Permafrost Change and Impacts on Infrastructure and Resources in Alaska: A Synthesis of Past Work