Raised Beaches Podcast: Episode 3

The deep dive of episode 3 is on proxy records.

Listen here: https://raisedbeaches.buzzsprout.com/

Watch here: https://www.youtube.com/@evangowan

Episode 3 – Intro

I discuss about how autumn is late coming to Japan, and my geological observations from my recent trip to Nagasaki. I talk about the devastating hurricanes in the southeastern United States, and how Hurricane Helene affected the National Centers for Environmental Information (NCEI). I discuss a newly published paper on the rate of sea level rise. Finally, I introduce the Global Self-consistent, Hierarchical, High-resolution Geography Database, and some of the issues I have had with it.

• Hurricane Milton on Wikipedia: https://en.wikipedia.org/wiki/Hurricane_Milton
• Update on the situation at the NCEI: https://www.ncei.noaa.gov/news/update-hurricane-helenes-impacts-ncei
• Hamlington et al show that the sea level rise rate has doubled in the past 30 years: https://doi.org/10.1038/s43247-024-01761-5
• GSHHG: https://www.soest.hawaii.edu/pwessel/gshhg/
• My paper discussing the errors in the GSHHG in Greenland: https://geusbulletin.org/index.php/geusb/article/view/8355

Episode 3 Deep Dive – Proxy Records

I introduce what proxy records are and give some examples about what kind of proxy records paleoclimate scientists use to infer past climate.

• Intro to proxy records: https://www.ncei.noaa.gov/news/what-are-proxy-data
• Oxygen isotopes – https://www.digitalatlasofancientlife.org/learn/paleoecology/biogeochemical-analysis/
• Hodell et al (2023) on the 1.5 million year record of oxygen isotopes: https://doi.org/10.5194/cp-19-607-2023
• Cibicidoides wuellerstorfi foraminifera – https://www.gbif.org/occurrence/3773613316
• Wang et al (2008) Hulu/Sanbao cave spelothem record: https://doi.org/10.1038/nature06692
• Garas et al (2023) Kikajima temperature records from corals: https://doi.org/10.1016/j.quascirev.2022.107926
• Kim et al (2021) TEX86 paleothermometer: https://doi.org/10.1016/j.gca.2007.12.010
• Nakamura et al (2020) diatom assemblages in sea ice: https://doi.org/10.5194/jm-39-77-2020
• Jessica Stoller-Conrad/NASA on Tree Rings: https://climate.nasa.gov/news/2540/tree-rings-provide-snapshots-of-earths-past-climate/
• Ice Cores on Wikipedia: https://en.wikipedia.org/wiki/Ice_core
• Sakura (cherry) blossom dates in Kyoto: Aono and Kazui, 2008 (https://doi.org/10.1002/joc.1594), Aono and Saito, 2010 (https://doi.org/10.1007/s00484-009-0272-x), Aono, 2012 (https://airies.wikiplus.net/attach.php/6a6f75726e616c5f31372d316a706e/save/0/0/17_1-04.pdf)

Episode 3 – More on Proxy Records

I give some background on how I learned about proxy records. I also describe the most famous proxy record, LRO4. Finally I discuss the end of the JOIDES Resolution, and the costs of collecting proxy records.

• Lisiecki and Raymo (2005) – description of the LR04 record: https://doi.org/10.1029/2004PA001071
• Lorraine Lisiecki’s website of the LR04 record: https://lorraine-lisiecki.com/stack.html
• The end of the Joides Resolution, article in The Guardian by Andrea Prada Bianchi: https://www.theguardian.com/environment/2024/oct/09/a-huge-loss-is-it-the-end-for-the-ship-that-helped-us-understand-life-on-earth

Episode 3 – Papers

I discuss a paper I am coauthor on about methane fluxes in Beringia, a glacial and sea level history of southern Banks Island and the Amundsen Gulf in northwestern Canada, and a 485 million year surface temperature reconstruction.

• Fuchs et al (2024), Methane flux from Beringian coastal wetlands for the past 20,000 years: https://doi.org/10.1016/j.quascirev.2024.108976
• Vaughan et al (2024), Passage and removal of the Amundsen Gulf Ice Stream, NW Laurentide Ice Sheet, recorded by the glacial and sea level history of southern Banks Island, Arctic Canada: https://doi.org/10.1016/j.quascirev.2024.108880
• Judd et al (2024), A 485-million-year history of Earth’s surface temperature: https://doi.org/10.1126/science.adk3705
• Phanerozoic on Wikipedia: https://en.wikipedia.org/wiki/Phanerozoic