Observed fingerprint of a weakening Atlantic Ocean overturning circulation https://www.nature.com/articles/s41586-018-0006-5 The oceans’ circulation hasn’t been this sluggish in 1,000 years. That’s bad news. https://www.washingtonpost.com/news/energy-environment/wp/2018/04/11/the-oceans-circulation-hasnt-been-this-sluggish-in-1000-years-thats-bad-news Gulf Stream current at its weakest in 1,600 years, studies show https://www.theguardian.com/environment/2018/apr/11/critical-gulf-stream-current-weakest-for-1600-years-research-finds Shutdown of thermohaline circulation https://en.wikipedia.org/wiki/Shutdown_of_thermohaline_circulation Stronger evidence for a weaker Atlantic overturning circulation http://www.realclimate.org/index.php/archives/2018/04/stronger-evidence-for-a-weaker-atlantic-overturning-circulation North Atlantic ocean currents are…
Joseph Cook is taking a closer look at the microbial life that can be found all over the planet’s glaciers and ice sheets. It is increasingly clear that this rich ecosystem affects the melt rates of polar ice and snow and could be accelerating climate change. Narrated by Jim Al-Khalili and starring Chris Hadfield. For…
Past studies of Antarctica’s accelerated glacier retreat focused on regional trends, a new study now finds continental trends of over ten percent of marine terminating glaciers moving inland. Current peak retreat has been documented to be in the ballpark of 25 meters each single year. Read Chris Mooney’s Washington Post article study summary goo.gl/HuxtxL /…
Scientist speculated that pingos may erupt and lead to the creation of craters – small lakes, thaw ponds. New satellite observations reveal continuous trend. The Siberian Times article, Pingo in Arctic goo.gl/mwNnEF / http://siberiantimes.com/other/others/news/crater-formed-by-exploding-pingo-in-arctic-erupts-a-second-time-from-methane-emissions/ The trend from frozen tundra soils shifting to thermokarst erosion and thaw ponds, may in the future be exacerbated by increased…
Excerpts from the AGU 2017 Fall Meeting summary presentation of the Climate Science Special Report, the Fourth National Climate Assessment. First part on U.S. xtremes, second part discusses sea level rise. Speakers David R Easterling, NOAA Asheville Robert E Kopp, Rutgers University, Department of Earth & Planetary Sciences Full summary presentation 2017 Fall Meeting –…
“The 2017 Pine Island Glacier and Larsen C Ice Shelf Calving Events” presented by Christopher Shuman. Originally presented at the Fall AGU 2017 conference on Tuesday, December 12, 2017 at 3:45 p.m.
“Rapid Arctic Climate Change: What’s cloud got to do with it?” presented by Patrick Taylor. Originally presented at the Fall AGU 2017 conference on Monday, December 12, 2017 at 10:00 a.m.
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
Methane clathrate https://en.wikipedia.org/wiki/Methane_clathrate
Paleocene–Eocene Thermal Maximum –
Teaser image credit: Yannis Papanastasopoulos on Unsplash
Music by WOWSound, “Tree of Life”.
Jim White from the University of Colorado, on climate change, January 2018. Human activities are summarized in this recent lecture.
The Oceans Melting Greenland mission seeks to understand how ocean water is contributing to ice loss in Greenland. In October 2017, mission scientists and crew dropped 240 ocean probes from a C-130 aircraft into the waters around Greenland to measure ocean temperature. Footage includes interior and exterior shots of the aircraft with crew and scientists…
The ozone layer protects life on Earth from ultraviolet radiation but it is also a powerful greenhouse gas. Satellites can provide measurements of atmospheric ozone and monitor distribution changes with the seasons.
Credit: ESA/CCI Ozone and Aerosol teams/Planetary Visions
ESA video link https://www.youtube.com/watch?v=eg6nc_IyaZY
The Greenland ice sheet is one of the largest contributors to global sea level rise, and if completely melted, could add ~7 meters to sea level. In recent years, the imbalance of the ice sheet has increased with warmer atmospheric conditions. In this talk, Visiting Assistant Professor Samiah Moustafa describes the field’s current knowledge on…
Miriam Jones speaks at the Permafrost Collaboration Team Meeting, October 10, 2017. https://www.iarpccollaborations.org/events/7798
Video via IARPC Collaborations https://www.youtube.com/watch?v=ZOyLef1t4IU
Bølling-Allerød warming https://en.wikipedia.org/wiki/B%C3%B8lling-Aller%C3%B8d_warming
The concentration of carbon dioxide in the atmosphere increased at record speed last year to hit a level not seen for more than three million years, the UN has warned. https://www.theguardian.com/environment/2017/oct/30/global-atmospheric-co2-levels-hit-record-high
The Keeling Curve animation via Scripps Oceanography https://www.youtube.com/watch?v=rEbE5fcnFVs
“All we have to do is keep declaring the facts as we see the facts, and producing the evidence whenever we can” – David Attenborough. Read the full article on climate change, optimism and Blue Planet Two at https://unearthed.greenpeace.org/2017/09/25/david-attenborough-climate-change-science-storytelling-blue-planet-ii “Sir David Attenborough may be 91, but he is a busy 91. As we set up…