Laxaro

View the latest news and breaking news today

abrupt thaw of permafrost beneath lakes could significantly affect climate change models - Search

abrupt thaw of permafrost beneath lakes could significantly affect climate change models Searched from official sources arount the web with simple content and resource link From any languages in different countries.



'abrupt thaw' of permafrost beneath lakes could significantly affect climate cha




methane released by thawing permafrost from some arctic lakes could significantly accelerate climate change, according to a new university of alaska fairbanks-led study.



'abrupt thaw' of permafrost beneath lakes could significantly affect climate cha




august 16, 2018 by jeff richardson, university of alaska fairbanksmethane bubbles are trapped in the ice on a pond near fairbanks, alaska. credit: katey walter anthonymethane released by thawing permafrost from some arctic lakes could significantly accelerate climate change, according to a new unive...



unexpected future boost of methane possible from arctic permafrost




new nasa-funded research has discovered that arctic permafrost's expected gradual thawing and the associated release of greenhouse gases to the atmosphere may actually be sped up by instances of a relatively little known process called abrupt thawing. abrupt thawing takes place under a certain type ...



huge permafrost thaw can be limited by ambitious climate targets




global warming will thaw about 20% more permafrost than previously thought, scientists have warned—potentially releasing significant amounts of greenhouse gases into the earth's atmosphere.



tundra loses carbon with rapid permafrost thaw




artistic interpretation of tundra carbon dioxide (co2) uptake and loss with permafrost thaw and accounting for co2 dynamics in the summer and winter. credit: victor leshykfrozen in permafrost soil, northern latitudes store almost twice as much carbon as is currently in the atmosphere. rapid arctic w...



thawing permafrost causing the 'browning' of northern lakes




permafrost peatbog border. storflaket, abisko, sweden. credit: dentren/wikipediathe organic carbon found in permafrost is being released as the ice melts after ages of confinement in the soil, and making its way into arctic and subarctic lakes and ponds, modifying their composition. these are the fi...



thawing permafrost causing the 'browning' of northern lakes




as ice the melts, the organic carbon found in permafrost is being released once again after ages of confinement in the soil. it is making its way into arctic and subarctic lakes and ponds, and modifying their composition. the portrait presented by an international team of researchers that includes p...



scientists find massive reserves of mercury hidden in permafrost




washington d.c. -- researchers have discovered permafrost in the northern hemisphere stores massive amounts of natural mercury, a finding with significant implications for human health and ecosystems worldwide.in a new study, scientists measured mercury concentrations in permafrost cores from alaska...



ancient carbon discovered coming from arctic soil




scientists have published new evidence that old or even ancient carbon, pulled out of the atmosphere and stored in the bodies of plants hundreds or thousands of years ago, is being set loose again from soils in the arctic region.it's a potentially worrying indicator that these "permafrost" soils ma...



getting to know the microbes that drive climate change




image: this is an aerial view of the field site in arctic sweden, where researchers uncovered thousands of previously unrecognized microbes that could contribute to the speed of climate change. view more credit: scott saleskacolumbus, ohio - a new understanding of the microbes and viruses in the t...



getting to know the microbes that drive climate change




july 16, 2018 by misti crane, the ohio state universityaerial view of the field site in arctic sweden, where researchers uncovered thousands of previously unrecognized microbes that could contribute to the speed of climate change. credit: scott saleskaa new understanding of the microbes and viruses ...



getting to know the microbes that drive climate change




a new understanding of the microbes and viruses in the thawing permafrost in sweden may help scientists better predict the pace of climate change.



climate change projected to significantly increase harmful algal blooms in us fr




harmful algal blooms known to pose risks to human and environmental health in large freshwater reservoirs and lakes are projected to increase because of climate change, according to a team of researchers led by a tufts university scientist.



blinded by the light: climate change, the sun, and lake superior




lakes tend to emit carbon dioxide (co2) to the atmosphere, making them important players in the planet's natural regulation of its climate. however, the direction of the flow of co2 between lakes and the atmosphere can be influenced by humans or by natural factors such as rainfall or air temperature.



the effects of climate change would encourage most british adults to change thei




according to a recent public survey commissioned by the global food security (gfs) programme, many british adults recognise that the food system is a key contributor to climate change and would change their diets as a result of climate change.in december 2016, gfs commissioned a public survey of ove...



a crucial climate mystery hides just beneath your feet




a scientist goes on a search for old soil, and his research reveals a promising result: humans can slow climate change simply by feeding people. the post a crucial climate mystery hides just beneath your feet appeared first on wired.



scientists lack vital knowledge on rapid arctic climate change




arctic climate change research relies on field measurements and samples that are too scarce, and patchy at best, according to a comprehensive review study from lund university in sweden. the researchers looked at thousands of scientific studies, and found that around 30% of cited studies were cluste...



nasa's arctic ecosystem science flights begin




the arctic boreal vulnerability experiment (above) has started the second year of its campaign, which will use airborne instruments to monitor ecosystems in alaska and northwestern canada. the campaign will study forests and lakes like this one, outside of fairbanks, alaska, where methane is being r...



melting arctic sends a message—climate change is here in a big way




scientists on arctic sea ice in the chukchi sea, surrounded by melt ponds, july 4, 2010. credit: nasa/kathryn hansenscientists have known for a long time that as climate change started to heat up the earth, its effects would be most pronounced in the arctic. this has many reasons, but climate feedba...



increased water availability from climate change may release more nutrients into




image: fig. 1. map of study locations. a. location of study area on the antarctic continent. b. location of places mentioned in the study: ross island (1), mcmurdo sound (2), taylor... view more credit: satellite images provided by the polar geospatial center. graphic by ruth heindel.as climate cha...



new study emphasizes the relative scarcity of lake water




what is the volume of water in lakes on earth? using a mathematical analysis, researcher david seekell, at umeå university, and his american collaborators now suggest that the mean depth of lakes is 30 per cent lower than previously estimated. shallower lakes implies less fresh water and has conseq...



study links climate policy, carbon emissions from permafrost




image: permafrost underlies much of this tundra landscape in alaska, as well as similar areas in the circumpolar north. permafrost contains substantial stores of carbon that are vulnerable to release as... view more credit: christina schädelcontrolling greenhouse gas emissions in the coming decad...



newly discovered salty subglacial lakes could help search for life in solar syst




an analysis of radar data led scientists to an unexpected discovery of two lakes located beneath 550 to 750 metres of ice underneath the devon ice cap, one of the largest ice caps in the canadian arctic. they are thought to be the first isolated hypersaline subglacial lakes in the world.



economic models significantly underestimate climate change risks




policymakers are being misinformed by the results of economic models that underestimate the future risks of climate change impacts, according to a new journal paper by authors in the united states and the united kingdom, which is published today (4 june 2018).the paper in the review of environmental...



farming becoming riskier under climate change




credit: bobby mikul/public domainscientists the world over are working to predict how climate change will affect our planet. it is an extremely complex puzzle with many moving parts, but a few patterns have been consistent, including the prediction that farming as we know it will become more difficu...