NASA Earth Observatory images by Lauren Dauphin, using Landsat data from the U.S. Between 20, Greenland shed about 280 gigatons of ice per year, adding 0.8 millimeters (0.03 inches) per year to global sea level rise. In the 1970s, the Greenland Ice Sheet gained about as much ice as it lost-a balanced state that lasted until the mid 1990s, at which point ice loss sped up. “This has led to increased contributions of ice to the ocean and is accelerating sea level rise.” “Kjer is experiencing a nearly four-fold increase in ice flow due to the collapse of its floating ice shelf, likely due to melting by warmer ocean waters,” Gardner said. By 2018, the glacier’s average speed was more than 4,000 meters per year. Having lost contact with the rocks, the glacier’s inland ice can flow even more rapidly toward the ocean.Īccording to Alex Gardner, a snow and ice scientist at NASA’s Jet Propulsion Laboratory, data from the NASA MEaSUREs project ITS_LIVE show that one year before the ice shelf’s breakup, the glacier flowed at an average speed of 1,200 meters per year. The rocks became free-standing islands, surrounded in the 2021 image by open water and a mixture of sea ice and icebergs, or mélange. Then sometime in 2012, the glacier’s floating ice shelf disintegrated. These rocks helped buttress the ice and slowed its oceanward flow. Notice that in 2000, Kjer Glacier abutted a few rocky outcrops. Kjer and Hayes-the two main outlet glaciers shown above-are also speeding up. Most of these marine-terminating glaciers are retreating. Like so many places around the edges of Greenland, a series of glaciers here carry ice from the island’s interior toward the coast and onto the ocean. The images show a 80-kilometer (50-mile) stretch of coastline. Both images above are natural color and show a slightly wider view.) (Note that Earth Observatory originally published a version of the 2000 image in false color. The images were acquired with the Enhanced Thematic Mapper Plus (ETM+) on Landsat 7 and the Operational Land Imager (OLI) on Landsat 8, respectively. The image pair above shows part of Greenland along Melville Bay (a sub-section of Baffin Bay) on September 3, 2000, and September 21, 2021. One example is northwest Greenland, where quite a lot has changed in 21 years. But in the icy polar regions, change has been dramatic and swift in the past few decades. Change is constant and common on Earth across geologic time. For more information, call Leslie Logan or Mar Perez at (607) 255-4308, or contact the Native Americas web site at. These events are part of a partnership between NASA and Akwe:kon Press that led to the publication of Native Americas' January double issue, titled "Global Warming, Climate Change and Native Lands." Sponsored by a $61,000 grant from NASA's office of Earth Science Enterprises, the double issue was the result of an unprecedented effort by NASA to seek Native American perspectives on the impact of climate change in the United States. The November image shows Iceberg B-46 (center-right), comprising about 115 square miles (185 square kilometers), after it broke off of Antarctica’s Pine Island Glacier in late October 2018. Panelists will discuss a range of themes, including Native prophecy, Native responses and solutions to help mitigate climate change and maintain balance with the Earth, and NASA collaborations with Native communities. on the first floor of the Robert Purcell Community Center. It will provide an overview of global warming and climate change issues viewed from both a Native American and a NASA perspective. in the Townhouse Community Center on Jessup Road, across from the Robert Purcell Community Center on Cornell's North Campus. Mohawk, member of the Seneca Nation and a professor of American studies at the State University of New York at Buffalo Nancy Maynard, a program director with the NASA Goddard Space Flight Center Robert Gough, an attorney for the Rosebud Sioux Tribe Utility Commissionin South Dakota (S.D.) and Tim Johnson, from the Smithsonian's National Museum of the American Indian in Washington, D.C. Guest speakers will include Native American elder Oren Lyons, an Onondaga faithkeeper who served on the 1998 Native Peoples/Native Homelands Climate Change Workshop in Albuquerque, N.M. This event is free and open to the public. ![]() The Akwe:kon Press and Native Americas journal, part of the American Indian Program at Cornell University, will hold a "Global Warming/Climate Change" panel discussion on campus Feb.
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