Browse: Home / Medieval Warm Period
By Kenneth Richard on 13. May 2025
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 […]
Posted in Antarctic, Medieval Warm Period, Sea Ice |
By P Gosselin on 25. April 2025
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 […]
Posted in Medieval Warm Period |
By Kenneth Richard on 21. April 2025
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 […]
Posted in Antarctic, Glaciers, Medieval Warm Period |
By Kenneth Richard on 25. March 2025
“[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 […]
Posted in Cloud Climate Influence, Little Ice Age, Medieval Warm Period, Natural Oceanic Oscillations, Paleo-climatology, Solar Sciences |
By Kenneth Richard on 13. March 2025
“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 […]
Posted in Little Ice Age, Medieval Warm Period, Paleo-climatology, Solar Sciences |
By P Gosselin on 30. November 2024
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, […]
Posted in Little Ice Age, Medieval Warm Period |
By Kenneth Richard on 21. August 2023
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. […]
Posted in Hockey Team, Medieval Warm Period, Paleo-climatology |
By Kenneth Richard on 27. July 2023
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 […]
Posted in Little Ice Age, Medieval Warm Period, Paleo-climatology |
By Kenneth Richard on 13. March 2023
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 […]
Posted in Medieval Warm Period, Paleo-climatology |
By Kenneth Richard on 6. February 2023
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 […]
Posted in Medieval Warm Period, Natural Variability, Paleo-climatology |
By Kenneth Richard on 18. July 2022
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 […]
Posted in Medieval Warm Period, Paleo-climatology |
By Kenneth Richard on 4. July 2022
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 – […]
Posted in Arctic, Glaciers, Medieval Warm Period, Paleo-climatology |
Recent Comments