Scientists estimate 1,400 gigatonnes of carbon are locked up in subsea hydrates (frozen methane and other gases) under Arctic submarine permafrost, some of which could be vulnerable to global heating. To meet the Arctic adaptation and decision-making needs, substantial progress has been made towards the establishment of an Arctic Regional Climate Centre Network (ArcRCC-Network). Permafrost is less reliable; animal ranges are changing, making hunting more difficult; and sea ice loss is drawing increased interest to resources in the Arctic Ocean. Feel free to ask any questions about it too. Toward Improved Discussions of Methane & Climate. Considers the Arctic to shed light on generic questions pertaining to international cooperation as well as evaluating the prospects for international cooperation in the Arctic. As at today the Arctic ice extent is 500,000km2 lower than any other year in the modem record. « 1 2 3 ... 8 », Started by bbr2314 The first attached image shows that the methane hydrates beneath Arctic continental shelves are buried below both sediment and permafrost and thus are slow to respond to warming from Atlantic Ocean water; while the methane hydrates on the Arctic continental slopes are located near the seafloor an thus can respond relatively quickly to warm Atlantic Ocean water (shown on the first image). Entry is free. in Re: SpaceX However, permafrost soils vary - some are with little ice, quite many are with much ice, and they are not stable. 4054 Posts 58 Topics Last post by oren The absence of sea ice in the Arctic is closely connected to the melting of permafrost, according to a new study. The global forum to discuss arctic sea ice and global warming. and Permafrost. Welcome, Guest. Consider switching to Theme Exodus! Methane release, snow cover, vegetation. Accessible to the layman, and full of charts and graphs, our government's latest climate change assessment should be required reading for all those questioning whether global warming is real, or whether it is something to worry about ... Orange line in extent and concentration images (left and middle) and gray line in time series (right) indicate 1981 to 2010 average extent for the day shown. Arctic sea ice extent for September 2019 was 4.32 million square kilometers (1.67 million square miles). The magenta line shows the 1981 to 2010 average extent for that month. Sea Ice Index data. About the data Credit: National Snow and Ice Data Center High-resolution image Figure 1b. on September 06, 2021, 04:21:33 PM, Last post by Glen Koehler ... formation and melt of sea ice in the Arctic Ocean, and transport of oceanic heat by Atlantic water. This was 400,000 square kilometers (154,000 square miles) above the record low for the month set in 2020 and 1.78 million square kilometers (687,000 square miles) below the 1981 to 2010 average. 99 In Alaska, 80% of land is underlain by permafrost, and of this, more than 70% is vulnerable to subsidence upon thawing because of ice … The Arctic Council is an intergovernmental forum representing eight member states (Canada, Denmark, Finland, ... (MODIS) on the NASA Aqua satellite, illustrate the thinning and thawing of arctic sea ice each spring. A new study by the National Snow and Ice Data Center and the National Center for Atmospheric Research has warned that the integrity of carbon and methane sequestering permafrost is threatened by the rapid retreat of Arctic Sea Ice. That would represent an increase of about 119 ppb, or 6 percent, since 2000. The 10 lowest ice minimums — measured each September, after the summer thaw — have all been recorded since 2007. This compares to 70.6% and 4.4% respectively in March 2020. In October 2015, an area appeared in the Arctic sea ice where the temperature of the ice was a few degrees Celsius higher and where ice concentration and salinity levels were substantially lower than the surrounding ice. Page created in 0.058 seconds with 29 queries. Arctic permafrost is an area of intense research focus because of its climate threat. Login with username, password and session length, Support the Arctic Sea Ice Forum and Blog. SCAR/CliC Antarctic Sea Ice Processes & Climate (ASPeCt) ASPeCt is an expert group on multi-disciplinary Antarctic sea ice zone research within the Scientific Committee on Antarctic Research (SCAR) Physical Sciences program and is co-sponsored by CliC. Since it was established by an Act of Congress in 1946, scientists at the Geophysical Institute have studied geophysical processes from the center of the Earth to the surface of the sun and beyond, turning data and observations into information useful for state, Arctic and national priorities. The Arctic used to be white but now it's turning blue, and absorbing more heat in a feedback loop. The bottom graph (c) shows a … on Today at 12:39:56 AM, Alps, Himalayas, Andes and everywhere else, Last post by kassy Found insideResponding to Oil Spills in the U.S. Arctic Marine Environment reviews the current state of the science regarding oil spill response and environmental assessment in the Arctic region north of the Bering Strait, with emphasis on the ... Dark blue areas are thin ice, white areas are thick ice, gray regions are land, and light blue south of the ice pack represents open water. By the end of this century, the Arctic Ocean is expected to have a very reduced sea ice cover. Thanks to disappearing sea ice and great interest therein the blog was off to a flying start right from the very beginning, with traffic peaking last record melting season (especially when the cyclone hit). The Arctic is warming twice as fast as the rest of the planet, and scientists are seeing the effects across ice and ecosystems. The seasonal decline in Arctic sea ice extent was fairly rapid during the first week of July, but slowed later in the month. Found insideIn The Future We Choose, Christiana Figueres and Tom Rivett-Carnac--who led negotiations for the United Nations during the historic Paris Agreement of 2015--have written a cautionary but optimistic book about the world's changing climate ... Aðeins þú veist hvort við gerðum eitthvað. Found insideThe New Ice Curtain explores Russia’s strategic ambitions for its Arctic region—an understudied and underappreciated region that encompasses nearly the entire northern coast of Eurasia. in Re: Arctic wildfires and... Great writeup BFTV, very clear and well explained. Found inside – Page 8continuous permafrost on land and sea-ice extent on the ocean.23 As with the 10 ... one of the Working Groups of the Arctic Council, the principal forum for ... The annual mean Arctic sea-ice extent decreased over the period 1979 to 2012, with a rate that was very likely in the range 3.5 to 4.1% per decade. Hot, salty water is entering the Arctic Ocean from the Atlantic Ocean as currents dive underneath the ice, causing the ice to melt from below. Found inside – Page 26At the same time, loss of Arctic sea ice increases heat absorption by the Arctic ... Seasonal melting of frozen soils (permafrost) can lead to loss of slope ... Lawrence 2008. Bottomfast sea ice is also As the sea ice retreats, the sea beneath it begins to warm and the seabed permafrost melts, said Professor Peter Wadhams, an Arctic ice specialist at Cambridge University who was part of the study. Found insideThe Arctic Climate System provides a comprehensive and accessible overview of the subject for researchers and advanced students in a wide range of disciplines. Thawing permafrost affects infrastructure across the region. The research team anticipates that in the decades to come, the Arctic will become free of summer sea ice and the direct heating and insulation from the snow will accelerate the collapse of permafrost this century. They say they are not, at present, able to date the stalagmites with enough precision to know just how fast the melting will occur. Permafrost gets colder and thicker northward. The average extent for the month ranks fourth lowest in the passive microwave satellite record. A boar (adult male) weighs around 350–700 kg (770–1,540 lb), while a sow (adult female) is about half that size. This book, based on contributions from 40 leading experts, offers a comprehensive and authoritative overview of the methods, techniques and recent advances in applications of remote sensing of the cryosphere. « 1 2 3 ... 5 », Started by bbr2314 The global forum to discuss arctic sea ice and global warming. Found inside – Page 1121The rapid decline of Arctic sea ice is an example where large new expanses of open ... Another Arctic tipping element of global significance is permafrost, ... The disappearance of the Arctic’s summer sea ice cover is one of the most visible warning signs of severe climate change and is … Opening the event, the President of the General Assembly, Volkan Bozkir, said “the global pandemic has arguably brought humanity closer together.” This Summary for Policymakers presents key findings. Arctic sea ice extent reached its apparent annual maximum on March 5, 2020. Summary. The monthly average extent for July 2021 was 7.69 million square kilometers (2.97 million square miles). in Re: Milestones Since 2011, downward trends have continued in sea ice thickness and extent, land ice volume, and spring snow cover extent and duration, while near-surface permafrost has continued to warm. September 23, 2019 - The Arctic is warming twice as fast as the rest of the planet, driven by melting sea ice and thawing of carbon-rich Arctic permafrost, according to the National Oceanic and Atmospheric Administration (NOAA). At a press conference today, US and German scientists updated negotiators and journalists with the latest science on the state of Arctic sea ice, the Antarctic continent and thawing permafrost. Abrupt melting of the permafrost layer is leading to erosion, landslides and craters in the Arctic landscape. The record-setting heat wave that swept through Arctic Siberia in June has yielded a wide-range of deleterious effects in the expansive polar and sub-polar region, triggering raging wildfires, thawing permafrost, and now, spurring the rapid melt-out of Arctic sea ice. The U.S. National Science Foundation asked for guidance to help design a pan-arctic observing network. This book outlines the potential scope, composition, and implementation strategy for an arctic observing network. As it approaches its yearly minimum, Arctic sea ice extent its slightly greater than recent ultra-low years. Packed with stunning photographs, original maps, and informative tables, this is the most authoritative, balanced, and compelling account available of the world of challenges and opportunities that we will leave for our children. In Figure 2, the 3-year mean sea-ice thickness distribution for 1979-81 is presented. ICESat’s precise observation of the surface elevation of Arctic sea ice enabled measurement of ice thickness. Arctic Climate Impact Assessment was prepared by an international team of over 300 scientists, experts, and knowledgeable members of indigenous communities, and is the most comprehensive volume on Arctic climate change available. 4054 Posts 58 Topics Last post by oren Login with username, password and session length, Support the Arctic Sea Ice Forum and Blog, Re: "Smart" and "Stupid" Questions About Antarctica - Feel Free To Ask, Re: Jakobshavn Isbræ / Ilulissat Isfjord / West Greenland, Re: The Chinese large modular space station. Arctic Circle is already recording 118 F degree days (and summer is just heating up) By Brandon Specktor June 24, 2021. Read these stories and narratives to learn about news items, hot topics, expeditions underway, and much more. The graph above shows Arctic sea ice extent as of September 1, 2021, along with daily ice extent data for four previous years and the record low year. Top of so many people's bucket lists, Svalbard is the home of the world's northernmost… well, pretty much anything. Sea Ice & Climate Modelling Forum . on September 17, 2021, 12:59:07 AM, Temperatures, weather disasters, agriculture, Last post by The Walrus Melting ice, on land and at sea, destroys animal habitats for species like polar bears and Arctic foxes, which use their snowy white coats as camouflage either to hunt for food or avoid predators. Broader look: The record-setting heat wave that swept through Arctic Siberia in June has yielded a wide-range of deleterious effects in the expansive polar and sub-polar region, triggering raging wildfires, thawing permafrost, and now, spurring the rapid melt-out of Arctic sea ice. Originating from a series of workshops held at the Alaska Forum of the Fourth International Polar Year, this interdisciplinary volume addresses a host of current concerns regarding the ecology and rapid transformation of the arctic. While the atmospheric lifespan of CH4 is estimated to be 12.4 years, the warming impact of methane (CH4) is far more intense than CO2. The image on the left was taken on April 11 2012, and shows sea ice hugging the shore. Components of the cryosphere in the Arctic. It is already lower than the average low reached in the 1990s with 2 months of melting still to go. Melody Schreiber-September 16, 2021. by University of Colorado at Boulder. Methane vent hole in the ice? Found inside – Page 634... 349 , 516–517 Antarctic , 513 , 516 , 522 , 537 , 540 , 542 biofuels and ... Permafrost , 189 Permo - Carboniferous glaciers , 167 , 169 Perturbed sea ... in Re: The 2021 melting sea... Using your smartphone? With each additional year of data, it becomes increasingly clear that the Arctic as we know it is being replaced by a warmer, wetter, and more variable environment. end of accordion The 1981 to 2010 median is in dark gray. Tananayev forecasts unfavorable weather conditions would only grow. View the most recent posts on the forum. in Re: "quotSmart"quot and "quotStup... ... suggesting that methane released from seafloor permafrost in the Arctic Ocean could enhance ocean acidification in that region over the next century. 2021 is shown in blue, 2020 in green, 2019 in orange, 2018 in brown, 2017 in magenta, and 2012 in dashed brown. Found insideThis book provides in-depth information about the sea ice in the Arctic at scales from paleoenvironmental variability to more contemporary changes during the past and present centuries. Thus, subsea permafrost may be ice-bonded (cemented by ice), ice-bearing (containing some ice), or ice-free. Credit: NASA. Northern Hemisphere Winter 2020-2021 Snowcover / Misc Obs - page 5 - Permafrost - Arctic Sea Ice : Forum Those who see when they are shown. Arctic sea ice began its autumn regrowth in the last 12 days of September, with the ice edge expanding along a broad front in the western Arctic Ocean. Overall, the summer of 2019 was exceptionally warm, with repeated pulses of very warm air from northern Siberia and the Bering Strait. Temporary coastal erosion control using supersacks in Utqiaġvik, Alaska, August 28, 2019. Welcome, Guest. Record hot Arctic temperature and ocean heat currents are likely responsible for the low sea ice these days. Area, extent, volume, thickness, ocean, atmosphere, Last post by Freegrass Permafrost Moderator: oren. on September 17, 2021, 10:51:25 PM, Last post by Sigmetnow in Re: Test space The obvious factor is the changing climate: Arctic sea ice is melting, glaciers are retreating, and permafrost is thawing.Much less obvious is the role that emerging technologies can play in economic development and geopolitical conflicts in the far north. Hot Topic (More than 15 replies) Found insideIce, the magic crystal -- A brief history of ice on planet Earth -- The modern cycle of ice ages -- The greenhouse effect -- Sea ice meltback begins -- The future of Arctic sea ice the death spiral -- The accelerating effects of Arctic ... Arctic sea ice reaches its minimum each September. Thanks to disappearing sea ice and great interest therein the blog was off to a flying start right from the very beginning, with traffic peaking last record melting season (especially when the cyclone hit). https://arcticwwf.org/.../whats-next-for-the-arctic/snow-water-ice-and-permafrost I recently joined the twitter thing, where I post more analysis, pics and animations: @Icy_Samuel. Very Hot Topic (More than 25 replies). on September 18, 2021, 09:51:59 PM, Last post by Tor Bejnar Permafrost thaw is one of the world’s most pressing climate problems, already disrupting lifestyles, livelihoods, economies, and ecosystems in the north, and threatening to spill beyond the boundaries of the Arctic as our planet continues to warm. in Re: Alaska Glaciers The book also highlights how tribal communities and programs are responding to the changing environments. Fifty authors from tribal communities, academia, government agencies and NGOs contributed to the book. The Arctic is warming twice as fast as the rest of the globe, and these changes are already affecting the life of the people of the North. Climate Change: Evidence and Causes is a jointly produced publication of The US National Academy of Sciences and The Royal Society. When global temperatures rise, the sea ice cover shrinks. The graph also includes lines for selected earlier years, for comparison. Those who do not see.” ― anonymous, When I heard that podcast it reminded me of the excellent paper from D.M. Using your smartphone? In the context of sparse permafrost studies in the Hindu Kush Himalaya and significant gaps in our understanding of distribution, thermal state, organic content, and mass dynamics, we are collaborating with Tribhuvan University (TU) to organise this forum on permafrost. News Dive into the world of science! Found insideThe goals of the second volume of the AHDR – Arctic Human Development Report: Regional Processes and Global Linkages – are to provide an update to the first AHDR (2004) in terms of an assessment of the state of Arctic human development; ... The Ocean – Atmosphere – Sea Ice – Snowpack (OASIS) The Ocean – Atmosphere – Sea Ice – Snowpack (OASIS) program was created in 2004 as an international, multidisciplinary group to study chemical and physical exchange processes among the title reservoirs, focussing on the impact on tropospheric chemistry and climate, as well as on the surface/biosphere and feedbacks in the Arctic. Bottomfast sea ice is an integral part of many near-coastal Arctic ecosystems with implications for subsea permafrost, coastal stability and morphology. Found insideVanishing Ice is a powerful depiction of the dramatic transformation of the cryosphere—the world of ice and snow—and its consequences for the human world. Arctic Sea Ice Minimum. 4089 Views / 20 Likes. « 1 2 3 ... 26 », Started by Tom_Mazanec Summary for Policy-makers. permafrost [Osterkamp, 2001]. The record-setting heat wave that swept through Arctic Siberia in June has yielded a wide-range of deleterious effects in the expansive polar and sub-polar region, triggering raging wildfires, thawing permafrost, and now, spurring the rapid melt-out of Arctic sea ice. NASA link.Extent and area are minimum or tie the minimum measured on July 8. This sphere helps maintain Earth’s climate by reflecting incoming solar radiation back into space. Found inside – Page 75Arctic. Climatic. Change. L.D. Carter Geologic Division U.S. Geological Survey This ... which was characterized by an absence of permafrost and sea ice. This note summarizes discussions held during a 2-day meeting of the CLiC Arctic Sea Ice Working Group, in Boulder, CO (31st Oct. - 1st Nov., 2011). “There are three classes of people: those who see. « 1 2 3 », Started by Apocalypse4Real The Arctic Sea Ice Blog is close to reaching the 25,000 comments-mark. The image below pictures the situation on October 11, 2015. It seems to me from his answer to the rather loaded methane question that he sees terrestrial permafrost as more of a threat than marine shelf emissions. Found inside – Page 54Research, Knowledge Needs and Development en Route to the New Arctic ... Large portions of the Arctic Ocean are now ice-free for several months each year. Following a decision by the Arctic Ocean Sciences Board (AOSB) in July 1996 the then chainnan, Geoffrey Holland, wrote a letter of invitation to a meeting to plan a "Symposium on the Freshwater Balance of the Arctic". While the multiyear ice that advected into the Beaufort Sea has helped to stabilize ice loss in that region, multiyear ice for 2021 in the Arctic as a whole is at a record low. The Arctic Council is the leading intergovernmental forum … in Re: Historic Arctic Expe... The simulation of sea ice in CMIP5 models shows a large spread between models, making projections of the timing of a Latest Post: "Re: SpaceX" ( Today at 01:32:05 AM ) Found inside – Page 15Decline in Arctic sea ice thickness from submarine and ICESat records: ... Soil organic carbon pools in the northern circumpolar permafrost region. For example, heavy pack ice conditions rendered the Northwest Passage impassible for some ships in 2018, despite it being one of the warmest years on record. At the end of the ice growth season in mid-March, 73.3% of the Arctic Ocean domain was covered by first-year ice, while 3.5% was covered by ice 4+ years old. Researchers say climate change is to blame for continued loss. Significant decreases of Arctic sea ice have been observed in recent years, and the Arctic is expected to be free of summer sea ice in the coming decades. A US Coast Guard patrol unexpectedly encountered Chinese warships near Alaska’s Aleutian Islands. Found insideThis publication, prepared jointly by the WHO, the World Meteorological Organization and the United Nations Environment Programme, considers the public health challenges arising from global climate change and options for policy responses, ... Here's a quick blog post to inform anyone interested in permafrost of a workshop that will be held next month at the University of Hamburg. Since the 1970s, we have lost 75% of the volume of Arctic summer sea ice. More than 90 scientists contributed to the assessment, which was peer-reviewed by 28 experts in a rigorous. Polar ecosystem, complex of living organisms in polar regions such as polar barrens and tundra.. Polar barrens and tundra are found at high latitudes on land surfaces not covered by perpetual ice and snow. Such loss of sea ice is likely to lead to an acceleration of thawing of permafrost in Siberia and to the consequent release of carbon. Sea-Ice-Free Arctic Makes Permafrost Vulnerable to Thawing Permafrost is ground that remains frozen throughout the year; it covers nearly a quarter of Northern Hemisphere land. The record shows there is some kind of link between low sea ice and permafrost thaw. Started by Peter Ellis « 1 2 3 ». This is where years ago the thickest sea ice was located. One of the most challenging aspects of modeling the Arctic sea ice is to properly represent its thickness distribution throughout the basin. , 2020 cover shrinks is now declining at a faster arctic sea ice forum permafrost, according to new. Turning blue, and scientists are seeing the effects across ice and global warming all Graphs on ASI.. 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