The natural emissions and sinks balance out. While we havent observed a record low in the past 5 years, weve observed around 5 million square km of sea ice extent every one of those years, which is historically unprecedented. ICN provides award-winning climate coverage free of charge and advertising. The Gakkel Ridge Rift/Fault System, to be specific. Researchers have some hypotheses, but so far there is no scientific consensus. The climate models do not get it right at this point, Kaleschke said. Create your free account or Sign in to continue. That leads to stratification, which leads to an increased formation of sea ice, because its effectively shielded [by snow], he said. While there are some subtleties to the data, one clear trend emerges: the more CO2 there is in the air, the hotter our planet becomes [7,8,9]. These images, created from GRACE and GRACE-FO data, show changes in Antarctic ice mass since 2002. Everybody's Doing It With Miss Lolly Podcast, San Diego's camping ban takes effect this weekend, Indigenous athletes are reviving an ancient sport in San Diego, Ocean Beach neighborhood food pantry, like others in San Diego, is struggling, Rent control will be on the ballot in California next year, Kaiser health care workers picket over working conditions, patient care, Trump charged with additional counts in Mar-a-Lago documents case, Matt Araiza files defamation lawsuit against SDSU gang rape accuser, Q&A: District 4 Supervisor candidate Janessa Goldbeck is 'ready to hit the ground running', Q&A: District 4 County Supervisor candidate Amy Reichert wants to fix a 'broken' system, Q&A: District 4 Supervisor candidate Monica Montgomery Steppe says 'accountability is key'. Zwallys team used satellites to measure the elevations of glaciers on Antarctica. The Antarctic has gained about 7,300 square miles of ice each year since the late 1970s. First, note that this is a press release for a research finding not the research finding itself. Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. When the education system fails to such a degree, then we cannot really have democracy. It appears it was in concert with a large earthquake swarm, which may, in turn, be associated with the Earths changing magnetic field. I only discussed the former in this article. Note: You now need to create an Earthdata account to access NASA's ice sheet data. Antarctic sea ice is shrinking rapidly after decades of growth. Continue reading with a Scientific American subscription. The rise of wellness travel, from rewilding to pilgrimages, Photograph by NASA/GSFC/Jeff Schmaltz/MODIS Land Rapid Response Team. Other researchers say the shifting levels of sea ice could represent natural climate patterns. What was happening in Antarctica could not be so easily explained.. A RAdio Detection And Ranging (radar) device emits radio waves that then bounce back once they hit some sort of physical barrier such as a big rock. Those gases bring the Earth from 0 deg F to the temperatures that allow us to survive. Two weeks after the Arctic Ocean's ice cap experienced an all-time summertime low for the satellite era (left), Antarctic sea ice reached a record winter maximum extent (right). Get a daily email of our original, groundbreaking stories written by our national network of award-winning reporters. This has led to public misconceptions about climate change and the ice around Earths poles. Is A Mega Ocean Current About to Shut Down? In effect, "Antarctica is melting from the bottom," said Henri Drake, an oceanographer at the Massachusetts Institute of Technology. The biggest difference is that the Arctic sea ice forms in a huge ocean surrounded by the northern hemisphere land masses, while the Antarctic sea ice forms as a fringe around a vast frozen continent. Antarctica is gaining ice " [Ice] is expanding in much of Antarctica, contrary to the widespread public belief that global warming is melting the continental ice cap." ( Greg Roberts, The Australian) Antarctica is a continent 98% covered by ice, surrounded by local ocean with much of its surface seasonally covered by sea ice. Significance A newly completed 40-y record of satellite observations is used to quantify changes in Antarctic sea ice coverage since the late 1970s. Menopause is rare among animals. But considering only 0.03% of the air was CO2 before, 0.01% is a significant relative increase. And now theres this? How is climate change impacting your everyday life? Journal of Climate, 27, 93779382. A team of researchers in the U.S. and the U.K. found that global warming has caused a shift in wind patterns that are ultimately bringing more warm ocean water into contact with the region's ice . Every day or once a week, our original stories and digest of the web's top headlines deliver the full story, for free. The warming weve been seeing outlasts that. Who broke its nose? Oklahoma Republican Sen. James Inhofe who calls global warming a hoax, along with other prominent deniers of global warming, has said scientists should focus on what is not melting.. Does all of your science indicate big bang or planned existence? This article on NASAs website explains their ICASat measurements and includes a brief explanation of ICASat-2 in the last paragraph: This was supposed to be the ice sheet that was melting so fast that everyone was speculating what would happen when Greenland is ice-free. All rights reserved, other studies that show an overall loss of ice, contributing a small amount to sea level rise, complete disintegration of the West Antarctic ice sheet, Do Not Sell or Share My Personal Information. Gases in our atmosphere, particularly carbon dioxide (CO2), largely dictate the temperature of our planet. But, the Leftists dont care because this is not about Science at all; it is about controlling the masses by the elite few with the power of taxation. One the Kelvin scale, which is the appropriate temperature scale for looking as percent change, weve only seen an average temperature increase of less than 1%. That has to be of great significance when it comes to cause-effect analysis of the accelerated melting rate of Arctic sea ice. Mass gains of the Antarctic ice sheet exceed losses. The Antarctic freezing trend has not been captured well by climate models. While you do mention sea level change as being dependent on the amount of ice in the Antarctic and Greenland, there is another factor: as water gets warmer, it expands. That paradox has puzzled scientists for years and given climate-change deniers fodder to dispute global warming. But what gets us from 0 deg F to the temperatures we experience now? If the farms in Greenland are under several feet of ice how do you know that they are there? Are the Antarctics ice sheets shrinking or growing? Copyright 1996-2015 National Geographic Society, Copyright 2015-2023 National Geographic Partners, LLC. Dont miss a beat. Two newly spotted objects in space are emitting regular pulses of radio wavesunlike anything astronomers have seen before. Theres a good chance that melting ice sheets comes to mind pretty quickly. And the Antarctic is surrounded by the circumpolar current, which isolates the Antarctic from the rest of the world.. There will be a satellite launched in its place called ICESat-2 in 2018. Im old enough to remember when we were told that the world would be completely destroyed BEFORE the 21st century due to over population and the beat goes on. I don't think Zwally's estimates really matter so much in the grand scheme because adding a little snow to Antarctica in no way offsets the complete disintegration of the West Antarctic ice sheet in the near future, says Pettit, who is also a National Geographic explorer who works on the continent. From 2014 to 2016, the Interdecadal Pacific Oscillation shifted again, which may have had the opposite effect. It has been a focus of attention in recent years, largely because of a strong decrease in the Arctic sea ice cover and modeling results that indicate that global warming could be amplified in the Arctic on account of ice-albedo feedback. (2014) Global Sea Ice Coverage from Satellite Data: Annual Cycle and 35-Yr Trends. Let me clarify what Im saying. al., and the constant massaging of past Earth and Ocean temp data, to make it look like the totally erroneous models were accurate see the CRU email scandals, I & II, and the IPCCs allowing one AGW zealot to completely change the views and findings of IPCC scientists, in the IPCC summary, with a classic demonstration of Orwellian Newspeak. The earth was significantly warmer in the past (Roman times and the MWP) when the Vikings had prosperous farms in areas of Greenland, that are now under many feet of ice. Climate change is real and has been since our climate has existed. No wonder those models have always been wrong in their predictions. Extracurricular activities. Data from NASA's GRACE and GRACE Follow-On satellites show that the land ice sheets in both Antarctica (upper chart) and Greenland (lower chart) have been losing mass since 2002. Its cause is essentially the change in climate at the end of the last ice age around 10,000 years ago. Source [9] that I provide actually addresses this. It snowed in Florida today. Researchers have long struggled to explain the unusual behavior of Antarctic sea ice, which forms when seawater surrounding the southernmost continent freezes in winter. That is why most of them refuse to discuss the 1999-2007 accelerated Arctic ocean sea ice melt rate, because it is ethically difficult to deny that underwater volcanic activity is increasing significantly and in addition to adding a vast amount of heat to the water under the Arctic ice, is releasing a large quantity of methane gas and CO2 without, the aid of Homo Sapiens. Even as the global temperature average has risen significantly in recent decades, especially in the Arctic, the warming has not been as great in Antarctica. Watch: Learn more about ice in Antarctica. No? NASA Earth Observatory (2009, April 20) Sea Ice. Thanks to the intense ASL and other stronger-than-usual wind patterns around Antarctica, sea ice in parts of the Southern Ocean drifted rapidly north into warmer waters, where it melted faster than usual. Plus, record low frequency and severity of hurricanes hitting the USA, along with tornadoes. The best science available on the long-term trends still makes a strong case for that, with significant implications for the planet. At least, that's what scientists used to think. This is according to satellite data you can view on NASAs website. This continues a . Were essentially in agreement with other studies that show an increase in ice discharge in the Antarctic Peninsula and the Thwaites and Pine Island region of West Antarctica, Jay Zwally, lead author of the study said. Weve now got 40 years of data, so we can look more holistically at the interactions between the tropics and the polar regions, the ice and atmosphere, said Julie Arblaster, an atmospheric scientist at Monash University in Melbourne, Australia, who was not involved with the new study. These are only a handful of mainstream American scientific communities who support this theory. Warmer waters can thin the ice from the bottom up, which may make it break more easily under stress and melt faster during the summer months. Chlorofluorcarbons were phased out as part of the 1987 Montreal Protocol, helping restore ozone levels and presumably cooling the ocean and helping raise levels of Antarctic sea ice. In this respect, there is no dispute. NASA Earth Observatory (2014, September 24) A Tale of Two Poles. And climate change is already taking a toll on other aspects of the Antarctic system. Furthermore, instead of contributing to rising sea levels, the still-very-much-frozen southern continent is actually reducing them by 0.23 mm per year. Some leading scientists vocally disagree with the study, which also runs contrary to the prevailing view of experts that Antarctica has been losing ice mass over the past few decades. I was going to say you are ignorant, but that not accurate. The maps below show the extent of Arctic and Antarctic sea ice in 1979 and 2013. Required fields are marked *. http://www.nasa.gov/feature/goddard/nasa-study-mass-gains-of-antarctic-ice-sheet-greater-than-losses. So scientists like the author can make lots of money by scamming hard working taxpayers to sit in his ivory tower and make up facts like laser satellites and different antarcticas. There, this leads to freshening of the surface layer. Another is the so-called Interdecadal Pacific Oscillation, which every decade or two alters air pressure, sea temperatures and wind direction. I dont think so. As discussed in the original research article, the scientists were only evaluating a specific Arctic island in Norway, Spitzbergen. Antarctic sea ice hit a stunning record-low minimum at the end of February, dropping below 772,000 square miles for the first time since satellites began observing the southern continent more. The some subtleties to the data, in truth amounts to a negative correlation the vast majority of the time, between rising CO2 and rising temps. The continent of Antarctica makes up most of the Antarctic region. What do the 5 trillion $ of climate change subsidies actually solve? What does that solve? Scientists aren't sure why, but they think it may be caused by the frigid ocean current that surrounds Antarctica, and by the continent's icy winds. And thats important because it means we can input that information into ice-ocean levels and ice sheet levels which will then be used to predict future sea-level rise. Also, were talking about an increase of around 0.8 Kelvin over the past 50 years. Its not just this constant melt rate thats occurring there. The ice gains in the East Antarctic are not a new trend. Global ice loss is still occurring on a significant scale. Im sorry if this isnt where Im supposed to do this, but it seems like the links arent working for footnote 11: Oppenheimer, M, Alley, RB. Skeptical Science. I do think its useful to talk about how we know climate change is happening. That increase is due to fossil fuel emissions and, to a lesser extent, deforestation. Stand watch and be alert for the Day of the Lord. I am certainly not, but I propose that I could find many scientists that would differ with your ridiculous statement and insist that the sun plays the largest role in dictating temperatures on earth. Reality check: Antarctic sea ice has been growing, not shrinking Read Next Children at 'extremely high risk' to climate change By Yen Makabenta September 4, 2021 1170 First word The Gakkel ridge is an enormous deep ridge filled with underwater volcanoes (1,100 miles long), running below the Arctic Ocean from the northern tip of Greenland to Siberia. It is becoming painfully obvious that ..the 1999-2007 Gakkel Ridge heat and chemically charged fluid flow event was the root cause of accelerated Arctic sea ice melting rate.. The answer is probably thousands of years, if ever. Temps keep going lower and the Earth gets colder, because of rising CO2. Antarctica is losing ice mass (melting) at an average rate of about 150 billion tons per year, and Greenland is losing about 270 billion tons per year, adding to sea level rise. Whereas Arctic sea ice has been in steady decline over the past four decades, the amount of Antarctic sea ice increased from 1979, when scientists first had access to routine satellite observations of the area, to 2014, when the ice began its retreat. If all the ice in West Antarctica melts and slides into the sea, it is likely to contribute several meters to sea level rise. The findings are based on satellite readings of Antarctic sea ice movement and thickness, as well as new, detailed interpretations of charts showing the shape of the sea bottom around Antarctica. Yes, most of the CO2 in the atmosphere is natural. So scientists have been trying to understand why planetary warming has not melted Antarctic sea ice like it has in the Arctic, published online this month in the journal, Center for Earth System Research and Sustainability at the University of Hamburg, On the Coast of Greenland, Early Arctic Spring Has Been Replaced by Seasonal Extremes, New Research Shows, New Federal Report on Research Into Sun-Dimming Technologies Delivers More Questions Than Answers. East Antarctica's Conger ice shelfa floating platform the size of Romebroke off the continent on March 15, 2022. By continuing to use this site, you accept this policy. It shows the stark contrast between Antarcticas record high sea-ice coverage in 2014 and the record lows recorded in 2017.
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