greenland ice growth www.electroverse.netExtreme Weather 

Greenland is Rapidly Gaining Ice and disrupting the AMOC

For decades Greenland has been losing ice, but not anymore. It’s building again — due to our naturally cooling planet.

It’s the middle of July and the Greenland Ice Sheet is gaining so much ice that the blue line, indicating the accumulated surface mass balance, has pushed above the 1981-2010 mean.

As seen on the below chart, courtesy of the Danish Meteorological Institute.

Greenland Ice Growth www.electroverse.net

Calving

As ice sheets grow a process called ‘calving’ occurs.

Calving, also known as glacier calving or iceberg calving, is the breaking of ice chunks from the edge of a glacier. It is a form of ice ablation or ice disruption and is normally caused by the glacier expanding — not melting.

When calving occurs freshwater gets injected into the ocean.

A Strong Correlation

When it comes to regulating global climate, the circulation of the Atlantic Ocean (AMOC) plays a key role.

Influxes of fresh water can disrupt the deep-water system resulting in impacts on climate.

A research team led by Woods Hole Oceanographic Institution (WHOI) recently found the fingerprint of a massive flood of fresh water in the western Arctic, likely to be the cause of an ancient cold snap that began around 13,000 years ago.

“This abrupt climate change — known as the Younger Dryas — ended more than 1,000 years of warming,” explains Lloyd Keigwin, an oceanographer at WHOI and lead author of the paper published July 9, 2018 — for the full article click here.

It’s clear to the researchers that this huge influx of fresh water from caving ice sheets disrupted the AMOC, resulting in rapid global cooling.

The AMOC hasn’t been running at peak strength since the mid-1800s and is currently at its weakest point in the past 1,600 years.

As we descend further into the Grand Solar Minimum, expanding ice sheets and the resulting calving will further weaken the AMOC, disrupting weather patterns across the globe.

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2 Thoughts to “Greenland is Rapidly Gaining Ice and disrupting the AMOC”

  1. Todd

    the article you linked, though agreeing that calving would slow down AMOC, completely contradicts your statement about growing glaciers cause calving, but rather insists that the warming period at the time caused the sudden melting (and calving)….the results and outcome are the same, but you disagree on the cause. Who is right? possibly both?? Could calving be caused by both growth and melting?

    1. Cap Allon

      I believe either a period of rapid glacial melt disrupted the AMOC — OR, and what I’m leaning towards — the end of the 1000 year warming (before younger dryas) was started by a solar shutdown, and then exasperated by glacial calving due to growth.

      The end result is that the findings suggest an influx of fresh water into the Atlantic, like we’re seeing now, can trigger a breakdown of the AMOC and lead to rapid global cooling.

      Cap

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