ABSTRACT

Geoengineering: Ocean Iron Fertilization [July 7, 2022]   [open pdf - 1MB]

From the Summary: "Congress has shown growing interest in and support for geoengineering techniques as a means to remove carbon dioxide (CO2) from the atmosphere. 'Geoengineering' is a field of study that involves large-scale technological interventions to manipulate the processes that affect Earth's climate, generally with the aim of countering climate change. Geoengineering techniques that stimulate or amplify natural processes that remove CO2 from the atmosphere (e.g., afforestation, ocean fertilization) may be of particular interest to Congress, due to the relatively low cost of research, development, and deployment of these techniques compared with geoengineering techniques that rely on novel or industrial-scale technologies. For example, CO2 is transferred into the deep ocean via the physical process of overturning circulation and the biological process known as the 'biological pump.' Ocean iron fertilization (OIF), an ocean-based geoengineering technique, aims to increase the rate of atmospheric CO2 transfer to the deep ocean by stimulating the biological pump through the addition of iron (a key nutrient) to the surface of the ocean. Modeling studies indicate that OIF has the potential to remove CO2 from the atmosphere for hundreds to thousands of years."

Report Number:
CRS Report for Congress, R47172
Author:
Publisher:
Date:
2022-07-07
Copyright:
Public Domain
Retrieved From:
Congressional Research Service: https://crsreports.congress.gov/
Format:
pdf
Media Type:
application/pdf
URL:
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