Support the Arctic Sea Ice Forum and Blog

Author Topic: What's new in Greenland?  (Read 193430 times)

Stephan

  • Nilas ice
  • Posts: 1043
    • View Profile
  • Liked: 436
  • Likes Given: 174
Re: What's new in Greenland?
« Reply #500 on: February 29, 2020, 11:10:47 AM »
Just at the moment on the radio:
"Greenland in the focus of the super powers"
https://www.deutschlandfunk.de/begehrte-insel-groenland-im-fokus-der-grossmaechte.922.de.html?dram:article_id=466426
(in German)
It is too late just to be concerned about Climate Change

Juan C. García

  • Nilas ice
  • Posts: 1692
    • View Profile
  • Liked: 740
  • Likes Given: 572
Re: What's new in Greenland?
« Reply #501 on: March 18, 2020, 06:43:01 PM »
Quote
Greenland lost a near-record 600 billion tons of ice last summer, raising sea levels

Greenland’s unusually mild summer in 2019 caused the world’s largest island to lose 600 billion tons of ice in just two months, rivaling the summer of 2012 for the most ice mass lost in a single melt season, according to NASA data released Wednesday.

The mass loss from Greenland alone was enough to raise global sea levels by 2.2 millimeters, the study found.
https://www.washingtonpost.com/weather/2020/03/18/greenland-lost-near-record-600-billion-tons-ice-last-summer-raising-sea-levels/?itid=hp_hp-more-top-stories_greenland-115pm%3Ahomepage%2Fstory-ans

Quote
Continuity of ice sheet mass loss in Greenland and Antarctica from the GRACE and GRACE Follow‐On missions

Abstract

We examine data continuity between the GRACE and GRACE‐FO missions over Greenland and Antarctica using independent data from the mass budget method (MBM) which calculates the difference between ice sheet surface mass balance and ice discharge at the periphery. For both ice sheets, we find consistent GRACE/GRACE‐FO time series across the data gap, at the continental and regional scales, and the data gap is confidently filled with MBM data. In Greenland, the GRACE‐FO data reveal an exceptional summer loss of 600 Gigatonnes in 2019 following two cold summers. In Antarctica, ongoing high mass losses in the Amundsen Sea Embayment of West Antarctica, the Antarctic Peninsula, and Wilkes Land in East Antarctica cumulate to 2130, 560, and 370 Gigatonnes, respectively, since 2002. A cumulative mass gain of 980 Gigatonnes in Queen Maud Land since 2009, however, led to a pause in the acceleration in mass loss from Antarctica after 2016.
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL087291
« Last Edit: March 18, 2020, 09:17:35 PM by Juan C. García »
Which is the best answer to Sep-2012 ASI lost (compared to 1979-2000)?
50% [NSIDC Extent] or
73% [PIOMAS Volume]

Volume is harder to measure than extent, but 3-dimensional space is real, 2D's hide ~50% thickness gone.
-> IPCC/NSIDC trends [based on extent] underestimate the real speed of ASI lost.