"There are plentiful supplies of volcanic ash all around the world that could be used to fertilise the oceans to produce phytoplankton blooms to sequester carbon dioxide."

LINK

Gambardella, S. 2019. “The Stormy Emergence of Geoengineering in the International Law of the Sea.” Carbon & Climate Law Review 13 (2): 122–29. https://doi.org/10.21552/cclr/2019/2/7.

‌"This study aims to look at the role that international environmental law could or should play in the development of geoengineering. The discussions that have taken place on geoengineering in international fora are rich in lessons about these rights themselves and with regard to their effectiveness and efficiency. Thus, questions of ‘good governance’ emerge. It is therefore a question of presenting the various possibilities offered by international law to frame - even forbid - these new practices."

LINK

Pan, YiWen; Li, Yifan; Fan, Wei; Zhang, DaHai; Qiang, Yongfa; Jiang, ZongPei; Chen, Ying (2019): A sea trial of air-lift concept artificial upwelling in the East China Sea. In: Journal of Atmospheric and Oceanic Technology. DOI: 10.1175/JTECH-D-18-0238.1.

"In this work, a sea-trial of an air-lift concept AU system driven by self-powered energy was carried out in the East China Sea (ECS) (30°8′14″N, 122°44′59″E) to assess the logistics of at-sea deployment and the durability of the equipment under extremely complex hydrodynamic condition from Sep 3^rd to 7^th, 2014."

LINK

"Researchers in the United States analyzed iron in air samples collected on a research cruise in the North Atlantic Ocean. They used stable isotopes—forms of the same chemical element with different atomic weights—to discern the signature of different sources of iron."

LINK