Episode 6: CO2 Changes Through Time
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Episode 6: CO2 Changes Through Time
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Narrateur(s):
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À propos de cet audio
Raised Beaches Podcast: Episode 6
The deep dive of episode 6 is on the topic of CO2 changes through time. For a full list of references, see the post on my website: https://raisedbeaches.net/2025/07/10/raised-beaches-podcast-episode-6/
Listen here: https://raisedbeaches.buzzsprout.com/
Watch here: https://www.youtube.com/@evangowan
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Episode 6 - Intro
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In the intro, I discuss about the hot start to the summer and my trip to Mt. Aso volcano. I discuss about my experience at the Japan Geoscience Union conference in May, highlighting some of the interesting talks I saw. I briefly discuss Canada's first mission to Antarctica. Finally I give some commentary on the cuts being made to Earth science in the United States.
CBC documentary on Canada's scientific mission to Antarctica: https://www.youtube.com/watch?v=vwe6ptJ2gkY
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Episode 6 Deep Dive - CO2 changes through time
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I discuss why CO2 changes naturally. I give an overview of CO2 changes in the recent past, as well in the deep time period, covering the past 480 million years. I discuss why the current CO2 levels are unprecedented.
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Episode 6 - More on the CO2 changes through time
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I discuss the efforts to find ice older than 800,000 years old in Antarctica to measure past CO2 levels, and discuss about the difference between C3 and C4 plants and their importance in terms of CO2 levels.
Hui et al (2021) - Intensified fire activity induced by aridification facilitated Late Miocene C4 plant expansion in the northeastern Tibetan Plateau, China: https://doi.org/10.1016/j.palaeo.2021.110437
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Episode 6 - Papers
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I discuss a recent paper I published about changes to the rainfall in Eastern Asia due to sea level changes.
Gowan et al (2025) - Impact of topographic change on the East Asian monsoon in Japan and Eastern Asia during the Last Glacial Maximum: https://doi.org/10.1186/s40645-024-00681-4
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Thank you to:
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Raised Beaches Podcast logo by Aurooj: https://www.instagram.com/artbytinyleaf/
Sean for the Raised Beaches Podcast theme song
That Blasted Salami, who helped me get started: https://www.youtube.com/channel/UC5GTc4yWm-yiBFTuV3MsGaQ
Follow Dr. Evan J. Gowan on social media:
Mastodon: @DrEvanGowan@fediscience.org
Bluesky: @evangowan.bsky.social