EGU 2023 - Call for abstracts session 'OS3.4-Ocean alkalinity enhancement: a promising strategy for CO2 removal?'


Società Geologica Italiana

Carissimi Soci SGI,
Carissimi Soci Società Associate,

Su indicazione della Dott.ssa Giulia Faucher (GEOMAR Helmholtz Centre for Ocean Research, Kiel), vi segnaliamo la Call for Abstracts relativa alla sessione OS3.4 "Ocean alkalinity enhancement: a promising strategy for CO2 removal?", organizzata nell'ambito dell'EGU General Assembly 2023 (Austria & Online | 23–28 Aprile 2023). La sessione è dedicata ad una tra le più promettenti strategie di rimozione di anidride carbonica dall'atmosfera e raccoglie ricerche riguardanti studi teorici, esperimenti di laboratorio, esperimenti in ambiente marino, confronti con analoghi naturali e modellizzazioni. 

Cordiali saluti,

La Segreteria

Ocean alkalinity enhancement: a promising strategy for CO2 removal?
Co-organized by BG4
Convener: Giulia Faucher | Co-conveners: Jens Hartmann, Phil Renforth, Miriam Seifert

Keeping global warming below 2°C will require drastic reductions in emissions together with large-scale removal of CO2 from the atmosphere that must be initiated within this decade to remove hundreds of gigatons of CO2 from the atmosphere over the coming decades. Ocean alkalinity enhancement (OAE) is a promising method to actively remove CO2 from the atmosphere whereby well-known chemical reactions, accelerate the ocean uptake of additional CO2 from the atmosphere, imitating geologic weathering processes that have sequestered trillions of tons of atmospheric CO2 in the ocean over millennia.
Compared to other carbon dioxide removal technologies, OAE has noticeable advantages since it is applicable to large regions of the coastal and open ocean and helps to mitigate ocean acidification. However, the effect of introducing gigatons of alkalinity, and potentially silicate, and dissolved metals on marine pelagic ecosystems remains unknown and the direct measurement of CO2 drawdown at scale from OAE is still unclear.
In this session, we welcome research ranging from field and laboratories experiments, theory, comparison with natural analogues and numerical modelling addressing the potential application of OAE and that could shed light on some still open questions: i) which are the ecological risks or co-benefit of OAE (ii) how can desired and undesired effects be identified, monitored, and mitigated iii) under what conditions does OAE most efficiently sequester atmospheric CO2?

More info can be found here:

The deadline for abstract submission is 10 January 2023. 

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