Oldest lake in Europe reveals more than one million years of climate history

University of Cologne A deep drilling project at Lake Ohrid, situated at the border between Albania and North Macedonia and involving 47 researchers from 13 nations, has brought new insights into climate history to light. The team, headed by the geologist Professor Dr Bernd Wagner from the University of Cologne, has now published its findings…

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Switching on the Atlantic heat pump

Stockholm University 34 million years ago the warm ‘greenhouse climate’ of the dinosaur age ended and the colder ‘icehouse climate’ of today commenced. Antarctica glaciated first and geological data imply that the Atlantic meridional overturning circulation, the global ocean conveyor belt of heat and nutrients that today helps keep Europe warm, also started at this…

Listen to the Trees!

Guest post by Jim Steele What’s Natural? Published in Pacifica. Tribune August 20,2019 This summer I taught a class on the Natural History of the Sierra Nevada for San Francisco State University’s Sierra Nevada Field Campus. The first day we taught students how to identify the trees. Once students know their trees, they can easily…

In Search of the Enchanted Larch of Yamal

International team to study effect of climate change on the arctic Anthropologist Peter Ungar will study impact on the ecology of people and mammals University of Arkansas Peter Ungar, Distinguished Professor of anthropology and director of the Environmental Dynamics Program, will contribute to a two-year multidisciplinary and multi-institutional project studying the impact of climate change…

CG2 and Ex Post Picking

Reposted from Climate Audit CG2 and Ex Post Picking Jul 31, 2019: Noticed this as an unpublished draft from 2014. Not sure why I didn’t publish at the time. Neukom, lead author of PAGES (2019) was coauthor of Gergis’ papers. One of the longest-standing Climate Audit controversies has been about the bias introduced into reconstructions…

More ‘reactive’ land surfaces cooled the Earth down

Higher reactivity could explain temperature drop before last ice age GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre From time to time, there have been long periods of cooling in Earth’s history. Temperatures had already fallen for more than ten million years before the last ice age began about 2.5 million years ago. At that time the northern…

Breaking hockey sticks

Resolution and Hockey Sticks, Part Deux: Carbon Dioxide

Guest geological perspective by David Middleton In Part 1 of this series on resolution in signal processing, we discussed the integration of high resolution instrumental temperature records and lower resolution paleoclimate proxy data in climate reconstructions. In Part Deux, we will look at the integration of high resolution instrumental carbon dioxide records and lower resolution…

Broken Hockey Stick

Resolution and Hockey Sticks, Part 1

Guest sciency schist by David Middleton Resolution vs. Detection Geoscientists in the oil & gas industry spend much of our time integrating data sets of vastly different resolutions.  Geological data, primarily well logs, are very high resolution (6 inches to 2 feet vertical resolution).  Geophysical data, primarily reflection seismic surveys, are of much lower and…