Canadian ice caps disappear, confirming 2017 scientific prediction

This outline of the St. Patrick Bay ice caps, taken from the 2017 The Cryosphere paper, is dependent on aerialphotography from August 1959, GPS surveys done in the course of August 2001, and for August of 2014 and 2015 from NASA’s Innovative Spaceborne Thermal Emission and Reflection Radiometer (ASTER). It demonstrates the location of the St. Patrick Bay ice caps in 1959, 2001, 2014, and 2015. The ice caps were markedly more compact in 2015 than in earlier decades. Credit history: College of Colorado at Boulder

The St. Patrick Bay ice caps on the Hazen Plateau of northeastern Ellesmere Island in Nunavut, Canada, have disappeared, in accordance to NASA satellite imagery. National Snow and Ice Details Center (NSIDC) experts and colleagues predicted by way of a 2017 paper in The Cryosphere that the ice caps would soften out fully within the up coming five decades, and new photographs from NASA’s Highly developed Spaceborne Thermal Emission and Reflection Radiometer (ASTER) have verified that this prediction was precise.

Mark Serreze, director of NSIDC, Distinguished Professor of Geography at the University of Colorado Boulder, and direct writer on the paper, initial established foot on the St. Patrick Bay ice caps in 1982 as a young graduate pupil. He frequented the ice caps with his advisor, Ray Bradley, of the College of Massachusetts.

“When I initial visited all those ice caps, they appeared like such a permanent fixture of the landscape,” mentioned Serreze. “To view them die in fewer than 40 several years just blows me away.”

In 2017, researchers compared ASTER satellite details from July 2015 to vertical aerial pictures taken in August of 1959. They identified that in between 1959 and 2015, the ice caps experienced been decreased to only five % of their previous space, and shrank significantly concerning 2014 and 2015 in response to the primarily heat summer time in 2015. The ice caps are absent from ASTER visuals taken on July 14, 2020.

The St. Patrick Bay ice caps were being a person-fifty percent of a team of tiny ice caps on the Hazen Plateau, which shaped and probable attained their most extents for the duration of the Small Ice Age, potentially quite a few centuries back. The Murray and Simmons ice caps, which make up the 2nd 50 % of the Hazen Plateau ice caps, are found at a greater elevation and are consequently faring improved, however researchers predict that their demise is imminent as very well.

  • **Canadian ice caps disappear, confirming 2017 scientific prediction
    These NASA Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) satellite photographs display the spot exactly where the St. Patrick Bay ice caps utilised to exist on the Hazen Plateau of northeastern Ellesmere Island in Nunavut, Canada. The ice caps were being nonetheless intact in the photo on the remaining, which was taken in August of 2015. As of the image on the correct, which was taken in July of 2020, the ice caps have melted out and no extended exist. Credit: Bruce Raup, NSIDC
  • **Canadian ice caps disappear, confirming 2017 scientific prediction
    This NASA Sophisticated Spaceborne Thermal Emission and Reflection Radiometer (ASTER) satellite picture from August 4, 2015, displays the place exactly where the St. Patrick Bay ice caps (circled in blue). As of July 2020, satellite photos show that these ice caps have disappeared. Credit rating: Bruce Raup, NSIDC
  • **Canadian ice caps disappear, confirming 2017 scientific prediction
    This NASA Superior Spaceborne Thermal Emission and Reflection Radiometer (ASTER) satellite image from July 14, 2020, exhibits the locale the place the St. Patrick Bay ice caps when ended up (spot circled in blue). As of July 2020, satellite photographs demonstrate that these ice caps have disappeared. Credit history: Bruce Raup, NSIDC

“We’ve extensive acknowledged that as local climate improve normally takes keep, the outcomes would be primarily pronounced in the Arctic,” reported Serreze. “But the loss of life of individuals two small caps that I at the time realized so properly has manufactured weather change very private. All which is left are some photos and a whole lot of recollections.”



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