New webinar series! Find out more 4D-BGC group website: https://4d-bgc.github.io

Past: Webinar #1 on November 26 at 0600 EST/1200 CET

Title: Advancements in Biogeophysical 4D reconstructions: New methods development and exploitation of existing products for scientific investigations

Presenter: Dr. Bruno Buongiorno Nardelli Italian National Research Council

This presentation will address two key topics: the development of physically-informed neural network methods for the joint reconstruction of physical and biological variables in the Mediterranean Sea, and the analysis of existing data-driven 4D reconstructions of POC, combined with advanced dynamical diagnostics, to uncover the interannual variability of organic carbon export in the global ocean. The first part will introduce the approach tested in the European Space Agency’s 4DMED-Sea project, while the second will focus on research conducted within the H2020 AtlantEco project.

Webinar Series Information: The 4D-BGC Working Group seeks to enhance access and utility of Biogeochemical (BGC) Argo observations through four-dimensional (4D) data products. These advanced data products aim to refine our understanding of ocean biogeochemistry, improve biogeochemical models and reanalysis products, and provide valuable insights for policy-making. The goal of this webinar series is to introduce new and in-development BGC data products, review techniques used to develop data products from in situ observations, and to explore ways in which 4D-BGC products are leveraged to answer scientific questions.

This event will highlight, in parallel, the quantitative aspects of Blue Carbon (e.g., their roles in NDCs) as well as the more qualitative aspects of Blue Carbon (e.g., cultural ecosystem services). Specifically, this event will address the ways in which blue carbon has been and can be further included in GG inventories and Nationally Determined Contributions (NDCs), through the 2025 NDC revision cycle. This event will highlight some of the tools the United States Government and Pacific partners have created to track and quantify blue carbon sinks, and to identify effective opportunities for conservation and restoration as well as emphasize the
intrinsic and cultural ecosystem services provided by blue carbon in the Pacific.

Learn more about GeoXO and the future of hyperspectral ocean color. If you are interested in the use of cutting-edge remote sensing technology to monitor the health of oceans, estuaries, lakes, and rivers, we highly encourage your participation. 

July 29, 11-4 EDT

Learn more and register (in person and virtual) HERE

Please join us for the quarterly GO-BGC webinar, hosted by the US Ocean Carbon and Biogeochemistry Project Office. This webinar will be focused on high-latitude ocean biogeochemistry by exploring the research of two groups that participated in the 2023 GO-BGC/BGC Argo Float Data Workshop at the University of Massachusetts Boston. The webinar will begin with an update on the status of the GO-BGC float array, followed by two short presentations. We’ll then close with a community discussion and Q and A session. Recordings will be available on the OCB and GO-BGC websites.

REGISTER HERE

Agenda for May 9, 10 AM Pacific / 1 PM Eastern:

1. Yui Takeshita (Monterey Bay Aquarium Research Institute, USA, yui@mbari.org):

An update on the GO-BGC program

2. Daniel Koestner (University of Bergen, Norway)

Biogeochemical properties of the Lofoten Basin Eddy from 14 years of BGC-Argo float data

Oceanic eddies are typically short lived but are a crucial physical phenomenon supporting heat and nutrient exchanges across water bodies. The Lofoten Basin Eddy (LBE) is a seemingly permanent topographically constrained anti-cyclonic eddy situated in the northern Norwegian Sea containing relatively cool surface waters and consistently warmer subsurface waters. As such, the conditions in the LBE may drive significantly different biogeochemical processes than the surrounding waters. Here we examine the unique biogeochemical signatures of the LBE with the 14-year timeseries of BGC-Argo float observations. We describe methodology for float-eddy colocation and examine differences in key biogeochemical parameters inside and outside of the eddy, including organic carbon export.

3. Sophie Shapiro (University of California San Diego, USA)

Lessons and opportunities from the Southern Ocean Sea Ice team at the 2023 GO-BGC Float Data Workshop

In the winter of 2023, the Southern Ocean reached a record low sea ice extent anomaly. This unprecedented low sea ice coverage coincided with the August convening of the GO-BGC float data workshop. What insights could a cohort of motivated researchers uncover with two working days and the BGC Argo dataset? In this talk, we present preliminary data from BGC floats deployed in the Southern Ocean marginal sea ice zone. We illustrate the potential of the observational network to investigate further questions about the dynamics and impacts of changing sea ice. Finally, we highlight insights and challenges from the GO-BGC workshop to demonstrate the further potential of collaborative data working groups.

4. Discussion