Medieval Warm Period

Antarctic Elephant Seal Breeding Site Affirms There Was Far Less Sea Ice During Medieval, Roman Periods

Antarctic Elephant Seal Breeding Site Affirms There Was Far Less Sea Ice During Medieval, Roman Periods

DNA evidence suggests the limit of Antarctic sea ice was ~2000 kilometers farther south than it is today 2500 to 1000 years ago. Elephant seals can only breed in the Southern Ocean’s subantarctic, sea ice free waters. For example, today’s largest colony breeds on Macquarie Island (54.5°S). Scientists (Wood et al., 2025) have now identified […]

The Medieval Warm Period In Germany: Inconvenient And very Real

The Medieval Warm Period In Germany: Inconvenient And very Real

By KlimaNachrichten Grok AI generated image. Hans-Joachim Dammschneider has written a book about the climate history of the southern Harz region. In the historical weather data, he discovered climatic fluctuations that, according to the Intergovernmental Panel on Climate Change (IPCC), should not exist. Long before industrial CO2 accumulated in the atmosphere, there were already alternating […]

New Study: Plant Remains Embedded In A Modern Glacier Evidence A Warmer Antarctica 1000 Years Ago

New Study: Plant Remains Embedded In A Modern Glacier Evidence A Warmer Antarctica 1000 Years Ago

Leafy moss dated to the Medieval Warm Period (MWP) has been found embedded in Antarctic glacier ice that today is “permanently snow-covered” with “no evidence of meltwater.” This affirms a warmer MWP and that “the summer melt during the MWP was greater than today.” According to a new study, moss samples with intact leaves and […]

New Study: Recent 'Unprecedented' Cloud Cover Decline Driving Modern (And Past) Climate Change

New Study: Recent ‘Unprecedented’ Cloud Cover Decline Driving Modern (And Past) Climate Change

“[T]he increase in absorbed solar radiation is primarily due to natural variations in cloudiness and surface albedo, which have served as the main forcing factors of the flux above the atmosphere over the last 2 decades.” – Diodato et al., 2025 It is commonly accepted that there has been a satellite-observed (CERES) cloud cover albedo […]

New Study Identifies A Millennial-Scale 'Striking' Link Between Solar Forcing And Climate Patterns

New Study Identifies A Millennial-Scale ‘Striking’ Link Between Solar Forcing And Climate Patterns

“Until now, the origin of the climate dynamics of the Central Andes during the last millennium has been speculative. On the basis of statistical evidence, we have identified solar variability as its origin.” – Schittek et al., 2025 In a new study, scientists have determined: 1) The Little Ice Age (LIA) was a global-scale cold […]

Recent Paper Shows Little Ice Age, Climate Driven By A Number Of Natural Driving Factors

Recent Paper Shows Little Ice Age, Climate Driven By A Number Of Natural Driving Factors

The Little Ice Age By Klimanachrichten The period between 1250 and 1860 is also known as the Little Ice Age. We have already reported on it several times here. The Little Ice Age was the undoing of the Franklin expedition, among others. In search of the Northwest Passage, the crew failed because of the ice, […]

4 More Temperature Reconstructions Fail To Support The 'Unprecedented' Global Warming Narrative

4 More Temperature Reconstructions Fail To Support The ‘Unprecedented’ Global Warming Narrative

New studies find recent non-warming and/or a warmer Medieval Warm Period. From 1785-2015 (231 years), the warmest 21-year period in India’s Himalayan region occurred from 1890-1910 (Rastogi et al., 2023). The years spanning 1995-2015 were the 4th warmest and 1946-1966 was the 2nd warmest period.   So, overall, the region has cooled slightly since 1890. […]

New Study: Modern Central Asia Climate Halfway Between Medieval Warmth And Little Ice Age

New Study: Modern Central Asia Climate Halfway Between Medieval Warmth And Little Ice Age

The mean annual temperature was 2-3°C warmer than present during the Holocene Thermal Maximum in arid central Asia. Over the last few millennia, Silk Road human civilizations (e.g., Sui, Tang, Ming, Yuan Dynasties) flourished during warm periods and declined during cool periods (Ding et al., 2023). The modern hydroclimate in this region does not stand […]

New Study: Roman And Medieval Warm Periods Were 2.8°C Warmer Than 1970-2000 In Central China

New Study: Roman And Medieval Warm Periods Were 2.8°C Warmer Than 1970-2000 In Central China

A series of paleoclimate lake reconstructions across China in recent years have failed to support the global-scale warming narrative. Per a new lake temperature reconstruction (Li et al., 2023) from Central China, there were distinct “warm intervals during the RWP [Roman Warm Period] (403–413 CE), with a temperature 2.89°C higher than that of the mean […]

3 Paleontologist Studies Affirm North Sweden Was 3°C Warmer Than Today When CO2 Was Below 280 ppm

Claims the Swedish Scandes are unprecedentedly warm and tree-covered today “appear as large and unfounded exaggerations,” as the “climate and arboreal responses” of the last few decades “are still inside the frames of natural historical variation.” – Kullman, 2022 and Kullman, 2022a Extensive birch forest fossils can be dated to the early- to mid-Holocene in […]

New Study: The Reality Of The Medieval Warm Period Confirmed By Changes In Agricultural Practices

New Study: The Reality Of The Medieval Warm Period Confirmed By Changes In Agricultural Practices

Due to a “relatively stable warm climate” the Medieval Warm Period (800 to 1300 CE) was a period of expanding Scandinavian population, increasing trade, food and goods production. There has been a ~500 zettajoule (ZJ) increase in global ocean heat energy since 1750. The Medieval Warm Period global ocean had 1000 ZJ more heat energy […]

New Study: Greenland 'Must Have Been At Least 3°C Warmer' Than Today During The Early Holocene

New Study: Greenland ‘Must Have Been At Least 3°C Warmer’ Than Today During The Early Holocene

These much warmer Greenland temperatures imply that the elevation of the ice sheet was 400 meters lower than it is today from about 6,000 to 10,000 years ago. Scientists (Westhoff et al., 2022) report that the two largest Greenland melt events in the last few hundred years occurred in 2012 and in 1889 CE – […]

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