JETZON – Joint Exploration of the Twilight Zone Ocean Network
JETZON is a UN Ocean Decade programme, acting as an international coordinator and focal point for Twilight Zone studies.
The ocean’s Twilight Zone, the dimly lit region extending from a few hundred metres depth to 1,000m, is still poorly understood from almost any perspective, whether physics, biochemistry or ecology. However, it contains possibly the world’s largest and least exploited fish stock and is responsible for recycling roughly 80% of the organic material that enters the ocean’s interior from productive surface waters. The former has drawn attention due to an increasing demand for resources from a growing world population. Hence there is a pressing need to understand the consequences of perturbing this ecosystem.
JETZON was set up to address the question: how can we as an international scientific community obtain the greatest insight into the Twilight Zone from ongoing work and how can we maintain focus on this potentially threatened environment?
JETZON aims to bring together all researchers in the field, from PhD students to those involved in, and leading large multi-national projects.
- ANTICS (UK)
- APERO (France)
- CLASS (UK)
- COMICS (UK)
- CO2Meso (Germany)
- CUSTARD (UK)
- e-IMPACT (Spain)
- EXPORTS (US)
- FLUXES (Spain)
- GOCART (UK)
- MEBiDyC-P – Mesopelagic Ecosystem/Biopump Dynamics and Connectivity in the Pacific (Korea)
- MEESO (EU)
- Ocean Carbon Cycling Since the Middle Miocene (UK)
- OCEAN DEOXYFISH (UK)
- Ocean Twilight Zone (US)
- ORCAS (Spain)
- PARTY (France)
- PICCOLO (UK)
- RADASO (Spain)
- REFINE (France)
- SOLACE (Australia)
- SUMMER (EU)
- SeaPump (Germany)
- TRACECARBON (Spain)
UN Ocean Decade linked activities
- PACE NASA’s Plankton, Aerosol, Cloud, ocean Ecosystem mission
Other linked activities
SCOR Working Groups
- ReMO Respiration in the Mesopelagic Ocean: Reconciling ecological, biogeochemical and model estimates
- TOMCAT Translation of Optical Measurements into particle Content, Aggregation & Transfer
A little background
JETZON has its origin in the BIARRITZ (Bridging International Activity and Related Research Into the Twilight Zone) workshop in July 2019, funded by the National Environmental Research Council (UK), NASA, OCB, and SCOR. The workshop brought together 13 international projects tackling aspects of the Twilight Zone’s role and function, from viruses to fish. Early career researchers from outside the project also participated in the workshop.
Jobs and posts
View the latest vacancies.
Last updated: 10 May 2022
Open monthly Zoom calls
- Next call – 23rd May 2022 - 1500 UTC
~ Biology trumps ocean warming: adaptive biogeochemistry in the Sargasso Sea - Mike Lomas (Bigelow)
~ Introduction to the CarbOcean project: observing the organic and carbonate components of the biological carbon pump - Griet Neukermans (Ghent University)
Recordings of talks from previous calls.
Data and method sharing
Find information about methods used for investigating the ocean twilight zone.