Did a Greenland Asteroid Cause Abrupt Warming Last Ice Age?

We report the discovery of a large impact crater beneath Hiawatha Glacier in northwest Greenland. From airborne radar surveys, we identify a 31-kilometer-wide, circular bedrock depression beneath up to a kilometer of ice http://advances.sciencemag.org/content/4/11/eaar8173 Hiawatha Glacier https://en.wikipedia.org/wiki/Hiawatha_Glacier Sources Discovering a massive meteorite crater https://www.youtube.com/watch?v=hQ9maLsIcts Massive crater under Greenland’s ice points to climate-altering impact in the…

Hugh Montgomery: Are Humans Like a Virus on Planet Earth?

The EPA, as part of the National Dialogue on Climate Action, hosted a public lecture on health and climate change presented by Prof. Hugh Montgomery. The EPA’s Climate Change lecture series has been running since late 2007, bringing a range of Irish and international speakers to The Mansion House in Dublin to update Irish audiences…

CO2 May Make Earth +10-15ºC Hotter, Like Early Paleogene

A new study led by scientists at the University of Bristol has warned that unless we mitigate current levels of carbon dioxide emissions, Western Europe and New Zealand could revert to the hot tropical climate of the early Paleogene period – 56-48 million years ago. https://www.bristol.ac.uk/news/2018/july/co2-levels-paleogene-period.html Read The Atlantic article here: They were strange days…

The Climate State of the Holocene and Anthropocene (Rates of Change)

Supplemental of Trajectories of the Earth System in the Anthropocene Will Steffen, Johan Rockström, Katherine Richardson, Timothy M. Lenton, Carl Folke, Diana Liverman, Colin P. Summerhayes, Anthony D. Barnosky, Sarah E. Cornell, Michel Crucifix, Jonathan F. Donges, Ingo Fetzer, Steven J. Lade, Marten Scheffer, Ricarda Winkelmann, and Hans Joachim Schellnhuber PNAS August 6, 2018. 201810141;…

Waking the Climate Giant

Bill McGuire (University College London) speaks about responses from the Earth crust in this 2016 lecture. He wrote a book on the subject, available at https://www.geolsoc.org.uk/Publications/Bookshop/Search?k=waking&sortexpr=Publication%20Date%20Desc An astonishing transformation over the last 20,000 years has seen our planet flip from a frigid wasteland into the temperate world upon which our civilisation has grown and thrived.…

An introduction to Methane Hydrates

This lecture was held in 2008 by Scripps Institution of Oceanography geochemist Miriam Kastner. This version has been slightly edited.

Release via https://www.youtube.com/watch?v=mSTm6cZjO14

Further reading

Methane clathrate https://en.wikipedia.org/wiki/Methane_clathrate

Paleocene–Eocene Thermal Maximum –
Ocean https://en.wikipedia.org/wiki/Paleocene–Eocene_Thermal_Maximum#Ocean

Teaser image credit: Yannis Papanastasopoulos on Unsplash

Music by WOWSound, “Tree of Life”.

Expert asks, can we control the climate crisis in time?

Stefan Rahmstorf speaks at the 2017 Bonn climate conference, explaining the basics of global climate change, and outlines our current emissions pathway – asking if we can control the climate crisis. The talk is titled Climate Action and Human Wellbeing at a Crossroads: Historical Transformation or Backlash?

Stefan Rahmstorf’s homepage http://www.pik-potsdam.de/~stefan

Arctic Sea Ice and Permafrost Status Report 2017

The Arctic is warming faster than anywhere else on Earth, affecting people in the region, fish and wildlife they depend on for food, and their environment. This unprecedented change has ramifications far beyond the region for the global economy, weather, climate, sea level, trade and security. Watch the full Arctic Report 2017 AGU press conference…

Hydrological Implications during Abrupt Climate Change

Researchers studying a rapid global warming event, around 56 million years ago, have shown evidence of major changes in the intensity of rainfall and flood events. The findings indicate some of the likely implications should current trends of rising carbon dioxide and global warming continue. https://scienmag.com/new-research-indicates-likely-hydrological-implications-of-rapid-global-warming