The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The last 10 years have been the warmest in the Arctic during the 120-year period of instrumental observations. The global mean surface temperature during that period has increased by about 0.8°C, with stronger changes in the Arctic. Retreat of the Arctic sea ice during the past decades open an additional source of heat and water vapor in the autumn and early winter seasons. If these warming trends...
This chapter provides an overview of observed changes in vegetation productivity in Arctic tundra and boreal forest ecosystems over the past 3 decades, based on satellite remote sensing and other observational records, and relates these to climate variables and sea ice conditions. The emerging patterns and relationships are often complex but clearly reveal a contrast in the response of the tundra...
Timely updates of large area forest cover and change facilitate studies of biogeochemical cycling and climate modeling, forest management, and ecological integrity. Our method employed an internally consistent and efficient probability-based sampling approach that integrates low and high spatial resolution satellite data sets for high-latitude gross forest cover loss estimation in Northern Eurasia...
Monitoring the dynamics of the circumpolar boreal forest (taiga) and Arctic tundra boundary is important for understanding the causes and consequences of changes observed in these areas. Because of the inaccessibility and large extent of this zone, remote sensing data can play an important role for the purposes. In this study, climate-related changes that occurred in the Ary-Mas larch forests (the...
Comparison of several recent, publicly available and widely used land-cover products for the Eurasian Arctic revealed important differences in their representations of vegetation distribution. Such disparities have important implications for models that use these products as driving data sets to monitor vegetation and its role in carbon dynamics. The differences between GLC-2000 and MODIS.PFT are...
Recent changes in climate, disturbance regimes and land use and management systems in Northern Eurasia have the potential to disrupt the terrestrial sink of atmospheric CO2 in a way that accelerates global climate change. To determine the recent trends in the carbon balance of the arctic and boreal ecosystems of this region, we performed a retrospective analysis of terrestrial carbon dynamics across...
The water cycle is a vital component of the North Eurasian environment and plays a central role in the region’s climate, biology, biogeochemistry and in human interactions with the natural environment. The Northern Eurasian arctic drainage covers more than 2/3 of the pan-arctic land mass. Substantial changes in land cover and land use have occurred over the region in recent decades, as a result of...
Eurasian indigenous reindeer herders have developed an important initiative to study the impacts of climate change and to develop local adaptation strategies based upon their traditional knowledge of the land and its uses – in an international, interdisciplinary partnership with the science community – involving extensive collaborations and co-production of knowledge to minimize the impacts of the...
The Yamal Peninsula in northwest Siberia is undergoing some of the most rapid land-cover and land-use changes in the Arctic due to a combination of gas development, reindeer herding, and climate change. Unusual geological conditions (nutrient-poor sands, massive ground ice and extensive landslides) exacerbate the impacts. These changes will likely increase markedly as transportation corridors are...
Atmospheric aerosols have been hypothesized as playing an important role in significant climate and environmental changes that have been occurring in the Arctic. This Chapter concentrates on the role of Arctic aerosols in the energy balance and the hydrological cycle by considering several major aerosol types (sulfates, black carbon and dust) that originate in Northern Eurasia. Aerosols can affect...
Climate change in the Arctic is taking place within the context of a wide range of other changes and disturbances including environmental pollution. During the past two centuries climatic change in the region has been accompanied by the added complexity of anthropogenic pollutants. This chapter deals with the interactions between climate change and environmental pollution generated in the Arctic,...
This chapter summarizes the volume content focusing on NASA LCLUC Program contribution to the IPY program, which has been completed. The volume is compilation of results of the most recent US and European studies on land-cover and land-use changes and their interactions with biogeochemical and water cycles, atmospheric aerosol, and human and wildlife populations in the Northern Eurasian Arctic. Emphasis...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.