Fler böcker inom
PDF med Adobe-kryptering
Om Adobe-krypteringPDF-böcker lämpar sig inte för läsning på små skärmar, t ex mobiler.
- Kan laddas ned under 24 månader, dock max 3 gånger.
- Antal sidor
- National Academies Press
Du kanske gillar
Opportunities to Use Remote Sensing in Understanding Permafrost and Related Ecological Characteristics (e-bok)
Report of a Workshopav National Research Council, Division On Earth And Life Studies, Polar Research Board, Committee On Opportunities To Use Remote Sensing In Understanding Permafrost And Ecosystems: A Work35Laddas ned direkt
Läs i vår app för iPhone, iPad och AndroidFinns även som
Permafrost is a thermal condition -- its formation, persistence and disappearance are highly dependent on climate. General circulation models predict that, for a doubling of atmospheric concentrations of carbon dioxide, mean annual air temperatures may rise up to several degrees over much of the Arctic. In the discontinuous permafrost region, where ground temperatures are within 1-2 degrees of thawing, permafrost will likely ultimately disappear as a result of ground thermal changes associated with global climate warming. Where ground ice contents are high, permafrost degradation will have associated physical impacts. Permafrost thaw stands to have wide-ranging impacts, such as the draining and drying of the tundra, erosion of riverbanks and coastline, and destabilization of infrastructure (roads, airports, buildings, etc.), and including potential implications for ecosystems and the carbon cycle in the high latitudes.Opportunities to Use Remote Sensing in Understanding Permafrost and Related Ecological Characteristics is the summary of a workshop convened by the National Research Council to explore opportunities for using remote sensing to advance our understanding of permafrost status and trends and the impacts of permafrost change, especially on ecosystems and the carbon cycle in the high latitudes. The workshop brought together experts from the remote sensing community with permafrost and ecosystem scientists. The workshop discussions articulated gaps in current understanding and potential opportunities to harness remote sensing techniques to better understand permafrost, permafrost change, and implications for ecosystems in permafrost areas. This report addresses questions such as how remote sensing might be used in innovative ways, how it might enhance our ability to document long-term trends, and whether it is possible to integrate remote sensing products with the ground-based observations and assimilate them into advanced Arctic system models. Additionally, the report considers the expectations of the quality and spatial and temporal resolution possible through such approaches, and the prototype sensors that are available that could be used for detailed ground calibration of permafrost/high latitude carbon cycle studies.
Laddas ned direkt749
KundrecensionerHar du läst boken? Sätt ditt betyg »
Fler böcker av författarna
National Research Council, Division On Earth And Life Studies, Board On Agriculture And Natural Resources, Committee On Animal Nutrition, Subcommittee On Dog And Cat Nutrition
Institute Of Medicine, National Research Council, Division Of Behavioral And Social Sciences And Education, Youth Board On Children And Families, Youth And Young Committee On The Prevention Of Mental Disorders And Substance Abuse Among Children