The northern North Atlantic’s sea ice records derived from ice cores and marine sediments consistently affirm there was far less sea ice during the Early/Mid Holocene than in 2000 CE. Even 17th to 19th century sea ice coverage was similar to (or less than) today’s. A 2020 study (Geirsdóttir et al.) indicated peak Holocene warmth … Continue reading New Study: Northern North Atlantic Sea Ice Cover No Less In 2000 CE Than In 1600s – 1800s CE