Theme 3 team
Main sources, cycling, processes, and species relating to Core Theme 3 (processes are indicated in italics).
With the increase of trace metal surveys in all ocean basins, we now have a better understanding of the nutrient and trace metals dynamics, and it is clear the importance of not only oceanic Fe sources but also those of atmospheric origin. Therefore, a coherent explanation for the biological response to input nutrients needs knowledge of both atmospheric and oceanic inputs of Fe. This subject is the core theme of SCOR Working Group 151 Iron Model Intercomparison Project (FeMIP) (https://scor-int.org/group/151/).
Addressing underlying key questions related to how far atmospheric deposition of soluble iron and other trace element (TE) aerosol – from different sources with different properties – modules marine biological activity and CO2 sequestration requires the interdisciplinary focus and international expertise and this is the purpose of this SCOR Working Group. Furthermore, to predict how ocean ecosystems will respond to future changes in soluble TE fluxes, it is vital that models represent and reproduce current TE distributions. RUSTED has three key deliverables: (1) production of a glossary of terms addressing inconsistencies in the use of terminology used by the ocean biogeochemistry and atmospheric chemistry communities; (2) a set of Standard Operating Procedures for the most frequently-used aerosol leaching schemes used for the estimation of TE solubility; (3) The creation of a new, comprehensive database of atmospheric TE measurements following FAIR (Findable, Accessible, Interoperable, and Reusable) data principles aimed to facilitate easier evaluation and calibration of global models than is currently possible. SCOR Working Group 167: https://scor-int.org/group/reducing-uncertainty-in-soluble-aerosol-trace-element-deposition-rusted/
ACCEPTED: "Fire Land Atmosphere Ocean Workshop" in response to the European Space Agency (ESA) – Future Earth joint program open call for global research networks (GRNs): collaborative Earth observation (EO) activities 2022-2023. –> FLARE: Fire science Learning AcRoss the Earth system Workshop organised by SOLAS Early Career Researchers, Douglas Hamilton, Joan Llort and Morgane Perron aims at bringing land surface and wildfire researchers, remote sensing experts, atmospheric chemists, and biogeochemical oceanographers together to understand the future impacts of fires on the Earth system. The workshop will be an important contribution to SOLAS research, particularly to Core Theme 3, on Atmospheric deposition and ocean biogeochemistry, and the Cross-Cutting Theme on Science and Society.
COP27 event/discussion session at OSC22: to build a consortium (with GEOTRACE, IMBER and other large international programs: the goal is to propose a large project under the umbrella of the UN Ocean Decade with the general theme: present and future impact of fires on the ocean and feedbacks to society.
Current international research program "PEACETIME" which was endorsed by SOLAS has been completed. Its main results have been compiled in the published as “Atmospheric deposition in the low-nutrient-low-chlorophyll (LNLC) ocean: effects on marine life today and in the future (BG/ACP inter-journal SI); Editor(s): Christine Klaas, Cecile Guieu, et al.” in the Biogeosciences and Atmospheric Chemistry and Physics journal.
In addition, progress quantitative understanding along with coherent explanations of the biological response at the ocean surface that incorporate the knowledge of both atmospheric and the oceanic Fe supplies has been slow. SOLAS will continue to advocate towards improving collaborations between ocean and atmospheric researchers by promoting more collaborative studies, symposium, workshop, and other activities with GEOTRACES project. SOLAS is working closely with GEOTRACES. The Iron at the air-sea interface workshop in 2022 continues to be conducted by Theme 3 members and will be held again next year. The above reference new SCOR working group (RUSTED)" really embodies this link between SOLAS and GEOTRACES as many SOLAS theme 3 people are involved.
Other workshops are also planned, including one to discuss nutrient deposition from the atmosphere to the oceans in the Indian Ocean “Potential role of atmospheric deposition in driving ocean productivity in the Southwest Indian Ocean, GESAMP WG38 with SOLAS SSC members, South Africa, 4-7 October 2022”.
One of the main scientific research topics under the theme 3 is "understand atmospheric nutrient (Fe, N, P) deposition and its influence to ocean biological production". In order to predict changes in nutrients suppy from the atmosphere to the ocean surface in the future, understanding the material exchange process between the atmosphere and the ocean, which include atmospheric chemistry, quantitative estimation of the nutrient flux, and the amount of biological production produced by the nutrient deposition, is necessary. In order to achieve this, accurate numerical model research validated by observation data is required. SOLAS theme 3 studies will directly lead to an understanding of the role of the atmospheric nutrient deposition in the current and future oceanic biological production process and be related to human life. At UN Decade, SOLAS scientists will play a role as a producer of scientific knowledge required by fisheries, stake holders, etc. and contribute to UN SDG 14 "Life below Water".