OCB Webinar Series

OCB Webinars

Recorded Webinars

GO-BGC Webinar Series - Quarterly

5 October 2022 GO-BGC webinar #3 - using BGC floats for the study of extreme events

This webinar will be the first of two consecutive webinars focused on using BGC-Argo float data to investigate chemical and biological processes in the ocean that are influenced by weather and extreme events. The webinar will open with an update on the status of the GO-BGC float array, then we will hear two short presentations about exciting new work in the main topic area. We’ll close with a community discussion about best practices, challenges, and future perspectives of using BGC-Argo measurements to enhance our understanding of how storms, heatwaves, and other ocean- and land-based extreme events shape patterns of biogeochemistry in the global ocean. Recordings will be available on the OCB or GO-BGC website.

Agenda for October 5, 1 PM Pacific / 4 PM Eastern

Yui Takeshita (Monterey Bay Aquarium Research Institute, USA): An update on the GO-BGC program

Jakob Weis (Institute for Marine and Antarctic Studies, Australia): Using BGC-Argo floats to study phytoplankton blooms stimulated by the 2019-2020 Australian bushfires

Magdalena Carranza (Monterey Bay Aquarium Research Institute, USA): Topic: The role of storms on air-sea CO2 flux in the Southern Ocean


Watch recording on Youtube


The first webinar (30 March 2022) covered the current status of BGC floats worldwide, projected float deployment locations, and tools that we have developed to streamline data access, followed by community discussion and Q&A.

  • Introduction to the GO-BGC webinar series (Yui Takeshita, MBARI)
  • Introduction to BGC-Argo and GO-BGC (Alison Gray, University of Washington)
  • Upcoming float deployment plans (Yui Takeshita, MBARI)
  • How to use BGC-Argo data? (Jonathan Sharp and Hartmut Frenzel, NOAA PMEL)
  • What is the quality of BGC-Argo data? (Yui Takeshita, MBARI)
  • Discussion and community Q&A

The second (29 June 2022) focused on investigations of phytoplankton phenology and variability at regional to global scales using a range of chemical and bio-optical sensors on the BGC-Argo floats. Three short presentations about exciting new work in this area, followed by a community discussion about best practices, challenges, and future perspectives of using BGC-Argo data to advance our understanding of ecological dynamics and the footprint of progressive climate change on the ocean.

  • Yui Takeshita (Monterey Bay Aquarium Research Institute):  An update for GO-BGC program
  • Nicholas Bock (Columbia University): Biogeographical classification of the global ocean from BGC-Argo Floats
  • Marin Cornec (NOAA Pacific Environmental Laboratory): Dynamics of the deep chlorophyll maxima at a global scale based on bio-optical measurements of BGC-Argo floats
  • Mariana Bif (Monterey Bay Aquarium Research Institute): The impact of heatwaves on the northeast Pacific ecosystem

OCB-US CLIVAR Ecological Forecasting Workshop webinar with Dr Simone Alin (January 11, 2022)

The Olympic Coast as a sentinel: Integrated social-ecological vulnerability assessment and co-developing ocean resource management tools with tribal and state managers

As part of a regional vulnerability analysis, our team synthesized existing oceanographic data sets and model projections to understand how the frequency, duration, and severity of ocean acidification and co-stressor (warming, hypoxia) conditions may change between now and the end of the century and affect biological resources. Meanwhile, social scientists worked with Washington's coastal treaty tribes to identify the marine species of highest cultural and subsistence value to the tribes and to assess social vulnerability of tribal communities to changing ocean conditions. Ultimately the oceanographic synthesis and projections will inform tribal adaptation actions. On a related project, many of the same team worked with state and tribal managers to develop tools useful to managers of the Dungeness crab fishery in state and tribal fishing areas. In this talk, I will briefly describe scientific results and products of our collective work, but will focus as much on the challenges and lessons learned from working with this diverse team, consisting of natural and social scientists (working across academic institutions; federal, state, and tribal agencies) and tribal community members.

This webinar is an activity of the upcoming Daily to Decadal Ecological Forecasting along North American Coastlines Workshop (OCB-US CLIVAR), April 12, 2022 - April 14, 2022 (Woods Hole, MA and Virtual).

Exploring the ocean iron cycle - biological drivers and novel isotopic methods (23 March 2021)

Anh Pham
(Sorbonne University, France)
Biological processes control the ocean iron distribution
Tim Conway (University of South Florida) Fe isotopes highlight sources of Fe to the ocean interior: Ten years of GEOTRACES progress
Informal chat with speakers

Joint OCB-NACP Extreme events and the coastal carbon cycle webinars

Tropical storm impacts on carbon transport across the aquatic continuum (9 March 2021)

Chris Osburn
(North Carolina State University)
It was a dark and stormy decade: A tale of hurricanes and coastal carbon cycling in North Carolina
Ge Yan
(Chinese Academy of Sciences)
Hurricanes accelerate carbon cycling in coastal ecosystems

Wildfire impacts on coastal productivity and biogeochemistry (23 February 2021)

Sasha Kramer (University California, Santa Barbara) Observations of phytoplankton community composition in the Santa Barbara Channel during the Thomas Fire
Matthew Jones (University East Anglia) Impacts of fire on terrestrial and oceanic carbon storage

Regional and global perspectives on ocean deoxygenation (9 February 2021)

Mathilde Jutras (McGill University, Canada) Changes through time in the causes of oxygen decline in the St. Lawrence Estuary: From biogeochemistry to circulation
Marina Levy (Sorbonne University, France) Evolution of oxygen minimum zones under global deoxygenation

Ocean Acidification Impacts in the North Atlantic (26 January 2021)

Louise Cameron (Woods Hole Oceanographic Institution) The consequences of ocean warming and acidification for the Atlantic sea scallop fishery
Marcos Fontela (CCMAR - Centre of Marine Sciences of Algarve) The Northeast Atlantic is running out of excess carbonate in the horizon of cold-water corals communities

Spatial and temporal perspectives on the role of rivers in the Arctic coastal carbon cycle (15 December 2020)

Andrea Pain
(UMCES Horn Point)
Riverine export of carbon and nutrients from deglaciating Arctic landscapes: Implications for past and future climate transitions
Alexander Polukhin
(Shirshov Institute of Oceanology RAS, Moscow, Russia)
Carbonate system changes in the Russian Arctic Seas

EXPORTS: Field Campaign and Project Updates (17 November 2021)

Dave Siegel (UCSB) Introduction
Jason Graff (OSU), Sasha Kramer (UCSB) Phytoplankton community structure Jason Graff (OSU), Erin Jones (URI), Lee Karp-Boss (UMaine), Sasha Kramer (UCSB), Collin Roesler (Bowdoin), Tatiana Rynearson (URI), Heidi Sosik (WHOI)
Melanie Feen (URI), Meredith Meyer (UNC), Shannon Burns (USF) Production/Diel Productivity Melanie Feen (URI), Meredith Meyer (UNC), Shannon Burns (USF), Adrian Marchetti (UNC), Bethany Jenkins (URI), David Roo Nicholson (WHOI), Heather McNair (URI), James Fox(OSU), Kim Halsey (OSU), Kristen Buck (USF), Salvatore Caprara (USF), Mark Brzezinski (UCSB), Melissa Omand (URI), Mike Behrenfeld (OSU), Sarah Lerch (URI), Shawnee Traylor (WHOI/MIT), Susanne Menden-Deuer (URI), Weida Gong (UNC)
Karen Stamieszkin (VIMS) Mesozooplankton Deborah Steinberg (VIMS), Amy Maas (BIOS), Karen Stamieszkin (VIMS), Joe Cope (VIMS), Andrea Miccoli, (ex-BIOS) Chandler Countryman (UGA), C. Carlson (UCSB), C. Durkin (MLML), M. Omand (URI)
Brandon Stephens (UCSB), Garrett Sharpe (UNC) Microbial processing Brandon Stephens (UCSB), Garrett Sharpe (UNC), Craig Carlson (UCSB), Scott Gifford (UNC)
Sarah Lerch (URI) Food web synthesis Heather McNair (URI), Sarah Lerch (URI), James Fox (OSU), Meredith Meyer (UNC), Amy Maas (BIOS), Tatiana Rynearson (URI), Acacia Zhao (UNC) , Alex Niebergall (Duke), Alyson Santoro (UCSB), Annie Bodel, Ben Van Mooy (WHOI), Brandon Stephens (UCSB), Brian Popp (UHawaii), Claudia Benitez-Nelson (USC), Colleen Durkin (MLML), Craig Carlson (UCSB), Dave Siegel (UCSB), Elisa Romanelli (UCSB), Eric D'Asaro (UW), Erin Jones (URI), Ewelina Rubin (URI), Garrett Sharpe (UNC), Heidi Sosik (WHOI), Henry Holm (WHOI), Hilary Close (UMiami), Jason Graff (OSU), Bethany Jenkins (URI), Kana Yamamoto (UCSB), Karen Stamieszkin (VIMS), Kristen Buck (USF), Kristofer Gomes (URI), Lee Karp-Boss (UMaine), Adrian Marchetti (UNC), Mark Brzezinski (UCSB), Meg Estapa (UMaine), Melanie Cohn (UNC), Melissa Duhaime (UMichigan), Susanne Menden-Deuer(URI), Nicola Paul (UCSB), David Roo Nicholson (WHOI), Salvatore Caprara (USF), Sasha Kramer (UCSB), Scott Gifford (UNC), Shannon Burns (USF), Victoria Fulfer (URI), Weida Gong (UNC)
Andrew McDonnell (UAlaska),  Xiaodong Zhang (USM) Particle size distribution Xiaodong Zhang (USM), Lianbo Hu (UND), Yuanheng Xiong (UNDakota - UND), Deric Gray (NRL), Yannick Huot (USherbrooke), Andrew McDonnell (UAlaska), Rachel Lekanoff(UAlaska), Jessica Pretty (UAlaska), Brita Irving (UAlaska), Dave Siegel (UCSB), Norm Nelson (UCSB), Lee Karp-Boss (UMaine), Emmanuel Boss (UMaine), Guillaume Bourdin (UMaine), Nils Haentjens (UMaine), Marc Picheral (CNRS, LOV), Lionel Guidi (CNRS, LOV)
Hilary Close (UMiami) Vertical sinking and processing of particulate organic matter (POM) Hilary Close (UMiami), Meg Estapa (Univ. Maine), Vinicius Amaral (UCSC), Olivier Marchal (WHOI), Phoebe Lam (UC Santa Cruz), Elisa Romanelli (UCSB), Uta Passow (Memorial UNewfoundland), Muntsa Roca Marti (WHOI), Ken Buesseler (WHOI), Claudia Benitez-Nelson (USC), Colleen Durkin (MLML), Melissa Omand (URI), Annie Bodel (MLML), Alyson Santoro (UCSB), Pat Kelley (URI), Paul Wojtal (UMiami), Shannon Doherty (UMiami), Brian Popp (UHawaii), Connor Shea (UHawaii)
Muntsa Roca Martí (WHOI) Radiochemical assessments of flux Muntsa Roca Martí (WHOI), Ken Buesseler (WHOI), Claudia Benitez-Nelson (USC), Laure Resplandy (Princeton)
Alex Niebergall (Duke), Shawnee Traylor (WHOI/MIT), Roo Nicholson (WHOI) Biogeochemical mass balances Alex Niebergall (Duke), Shawnee Traylor (WHOI/MIT), Roo Nicholson (WHOI), Andrea Fassbender (NOAA PMEL), Muntsa Roca Marti (WHOI), Brandon Stevens (UCSB), Huang, Adrian Marchetti (UNC), Meredith Meyer (UNC), Melissa Omand (URI), Melanie Feen (URI), Nicolas Cassar (Duke), Yibin Huang (UCSC)
Dave Siegel (UCSB) Wrap up

Productivity and marine snow dynamics: Novel approaches and measurements of the biological pump (3 November 2020)

Amanda Timmerman
Fronts implicated as the missing mechanism driving phytoplankton variability in the iron-limited subarctic NE Pacific Reimers
Klas Ove Möller
(Institute of Coastal Research, HZG)
Sinking vs. remineralisation: Active controls of zooplankton on marine snow dynamics

New insights on the marine nitrogen cycle (6 October 2020)

Clara A. Fuchsman
(UMCES Horn Point Laboratory)
Quantification of organic matter sources for N2 production in oxygen minimum zones Granger
Francisco J. Cervantes
(Universidad Nacional Autónoma de México)
Novel microbial processes potentially interconnecting global biogeochemical cycles in marine environments

Changes in the ocean's organic carbon cycle (8 September 2020)

Cristina Romera Castillo
(Instituto de Ciencias del Mar-CSIC)
Net production of dissolved organic carbon in the deep ocean Rafter, Hood
Emma Cavan (Imperial College London) Ecological feedbacks to the ocean organic carbon cycle: Fishing and climate change

Modeling and machine learning approaches to study climate, carbon, and the ocean (25 August 2020)

Katarzyna (Kasia) Tokarska (ETH Zürich) Climate-carbon response: carbon budgets in overshoot scenarios, and in high warming models Long, Stock
Christopher Holder (Johns Hopkins University) Machine Learning and Some Potential Uses in Oceanography

Advancing understanding of biological feedbacks on ocean biogeochemistry (11 August 2020)

Emily Zakem (University of Southern California) Redox-informed models of global biogeochemical cycles Coles, Maas
Severine Martini (Mediterranean Institute of Oceanography) Shedding light (literally!) on biological carbon pump

Physical drivers of marine biogeochemistry and  ecology (28 July 2020)

Mara Freilich (MIT-WHOI Joint Program) Phytoplankton community structure in response to meso- and submeso-scale physics Palter, Friedrichs
Natalie Freeman (University of Colorado Boulder) On the recent increase in surface silicate-to-nitrate availability in the southern Drake Passage

Physical and biogeochemical processes that drive the biological pump (14 July 2020)

Hilary Palevsky (Boston College, Department of Earth and Environmental Sciences) The influence of winter ventilation on the ocean’s biological carbon pump Bushinsky, Fassbender
Joan Llort (Barcelona Supercomputing Centre) The four dimensions of the biological carbon pump

Space-based ocean measurements (30 June 2020)

Jeremy Werdell (NASA) Socially distant by design: How the evolution of ocean color remote sensing contributes to aquatic biological and biogeochemical studies (NASA PACE) Benway