Scientists reveal that the colossal iceberg A23a, considered the world’s largest and boasting an area nearly three times that of New York City, weighs close to 1 trillion tons. This information comes from the European Space Agency (ESA), as reported by the BBC News, utilizing data from the CryoSat-2 mission. This spacecraft, equipped with radar capable of gauging the mass above and below the water, has provided crucial insights into the iceberg’s composition.

Originating from Antarctica in 1986, A23a initially became lodged on the seafloor shortly after detachment. Recently, it has become dislodged and resumed its drifting journey.

Andy Ridout, a scientist from the University College London and the Natural Environment Research Council Centre for Polar Observation and Modelling, notes, “Over the past decade, we have observed a consistent 2.5m (approximately 8 feet) per year reduction in thickness, aligning with the expected changes in the Weddell Sea’s water temperatures.”

As A23a continues its movement, its trajectory remains uncertain, guided by wind patterns and ocean currents. Currently situated at the Antarctic Peninsula’s tip, where various currents converge, it is anticipated to navigate through “iceberg alley,” impacting the ocean and ocean floor in its path.

“Icebergs play a crucial role in the profound mixing of seawater,” explains Mike Meredith, a professor from the British Antarctic Survey. “They agitate ocean waters, bringing nutrients to the surface and dispersing dust, ultimately fertilizing the ocean. It’s common to observe phytoplankton blooms in their aftermath.”