CO₂: If you can measure it, you can control it

A new satellite system and atmospheric modelling can separate changes in anthropogenic CO₂ emissions from natural environmental variability.

Credit: Pixabay/CC0 Public Domain via the Article

by Jessica Merzdorf Evans, 01/04/2022 in Phys.org

First-of-its-kind detection of reduced human carbon dioxide emissions

For the first time, researchers have spotted short-term, regional fluctuations in atmospheric carbon dioxide (CO2) around the globe due to emissions from human activities.

Using a combination of NASA satellites and atmospheric modeling, the scientists performed a first-of-its-kind detection of human CO2 emissions changes. The new study uses data from NASA’s Orbiting Carbon Observatory-2 (OCO-2) to measure drops in CO2 emissions during the COVID-19 pandemic from space. With daily and monthly data products now available to the public, this opens new possibilities for tracking the collective effects of human activities on CO2 concentrations in near real-time.

Read the complete article….

Read the source report: Brad Weir et al, Regional impacts of COVID-19 on carbon dioxide detected worldwide from space, Science Advances (2021)

Featured image: Atmospheric carbon dioxide concentrations at Mauna Loa, Hawaii since 1958. Source Delorme – Data from Dr. Pieter Tans, NOAA/ESRL and Dr. Ralph Keeling, Scripps Institution of Oceanography via Wikipedia (which see for more details) / License: licensed under the Creative Commons Attribution-Share Alike 4.0 International.

Views expressed in this post are those of its author(s), not necessarily all Vote Climate One members.

New liquid-based CO₂ capture tech for industrial emissions

Shows capacities for high CO2 capture under power plant operating conditions, minimizing energy-intensive temperature swings of other techs

by Mohen S. Yeganeh, et al. 11/02/2022 in Science Advances
Solid with infused reactive liquid (SWIRL): A novel liquid-based separation approach for effective CO2 capture: Economical CO2 capture demands low-energy separation strategies. We use a liquid-infused surface (LIS) approach to immobilize reactive liquids, such as amines, on a textured and thermally conductive solid substrate with high surface-area to volume ratio (A/V) continuum geometry…. [The technology] shows stable, high capture capacities at power plant CO2 concentrations near flue gas temperatures, preventing energy-intensive temperature swings needed for other approaches.

VC1 Editor’s comment: The science behind this technology appears to be valid, but implementing it will be too costly and engineering intensive for applications other than mitigating already concentrated carbon emissions from power plant flue gases and other large-scale industrial emitters. However, in this application the technology described here would seem to have significant advantages over other proposed technologies.

Views expressed in this post are those of its author(s), not necessarily all Vote Climate One members.