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Our Oceans: Key To Storing Carbon?

Using carbon dioxide removal (CDR) strategies to mitigate climate change is a land-intensive endeavor. To capture one gigatonne of CO2 through direct air capture requires a facility & energy production footprint of at least hundreds, but potentially tens of thousands of square kilometers. To capture one gigatonne of CO2 via reforestation requires about 862,000 square kilometers of arable land (nearly the size of the Kalahari Desert). We currently release about 40 gigatonnes of CO2 into the atmosphere every year, so…do the math. And land that is allocated for CDR must compete with other land use claims: for urbanization, agriculture, biodiversity, and renewable energy technologies. But what if our perspective was slightly… more aqueous? Oceans, which make up 70% of the Earth’s surface, already absorb more than 10 billion tonnes of CO2 annually. Recorded on 06/09/2022. [8/2022] [Show ID: 38190] More from: Climate Now Conversation (https://www.uctv.tv/climate-now) Explore More Science & Technology on UCTV (https://www.uctv.tv/science) Science and technology continue to change our lives. University of California scientists are tackling the important questions like climate change, evolution, oceanography, neuroscience and the potential of stem cells. UCTV is the broadcast and online media platform of the University of California, featuring programming from its ten campuses, three national labs and affiliated research institutions. UCTV explores a broad spectrum of subjects for a general audience, including science, health and medicine, public affairs, humanities, arts and music, business, education, and agriculture. Launched in January 2000, UCTV embraces the core missions of the University of California -- teaching, research, and public service – by providing quality, in-depth television far beyond the campus borders to inquisitive viewers around the world. (https://www.uctv.tv)