Planet Earth: Two Decades of Glacier Ice Loss | European Space Agency
As part of a community effort, the Glacier Mass Balance Intercomparison Exercise, Glambie, has compiled all major studies using observations from a wealth of different techniques to provide an estimate of the world’s glacier mass change over the last two decades. The results, published in the journal Nature, show that ice melting from glaciers around the world is depleting regional freshwater resources and driving global sea levels to rise at ever-faster rates. The animation here illustrates the observation methods used in the research with Vatnajökull in Iceland as an example.
Between 2000 and 2023, glaciers collectively lost 6542 billion tonnes of ice, contributing 18 mm to global sea-level rise. On average, glaciers lost 273 billion tonnes of ice per year, equivalent to an annual sea-level rise of 0.75 mm.
The rate of glacier ice loss has increased significantly from 231 billion tonnes per year in the first half of the study period to 314 billion tonnes per year in the second half.
Today, glaciers rank as the second-largest contributor to global sea-level rise, following ocean warming related thermal expansion. They surpass the contributions of the Greenland Ice Sheet, the Antarctic Ice Sheet, and changes in land water storage.
In addition to rising sea levels, glacier melt represents a significant loss of regional freshwater resources.
Read full story: https://www.esa.int/Applications/Observing_the_Earth/FutureEO/CryoSat/Glacier_melt_intensifying_freshwater_loss_and_accelerating_sea-level_rise
Read science paper in journal Nature: "Community estimate of global glacier mass changes from 2000 to 2023"
Duration: 4 minutes
Release Date: Feb. 20, 2025
#NASA #ESA #Space #Satellites #Science #Planet #Earth #Glaciers #Glambie #Melting #Weather #Meteorology #ClimateChange #GlobalHeating #Climate #Environment #GreenhouseGases #GHG #EarthObservation #RemoteSensing #GSFC #Europe #STEM #Education #Animation #HD #Video
No comments:
Post a Comment