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Development of In situ Nitric Oxide Sensor

Project description

World’s first highly sensitive and near-real-time underwater NO sensor

Nitric oxide (NO) plays an important yet poorly understood role in ocean chemistry and the global nitrogen cycle. Measuring it accurately is extraordinarily difficult due to its high reactivity and fleeting lifespan and the limitations of current measurement methods. With the support of the Marie Skłodowska-Curie Actions programme, the DINOS project aims to develop the world’s first reliable underwater sensor for dissolved NO, capable of detecting it at picomolar concentrations with second-scale response times. Developed in collaboration with leading ocean sensor experts at Woods Hole Oceanographic Institution and validated in the Baltic Sea, this breakthrough technology could transform our understanding of NO’s role in marine biogeochemical processes.

Objective

Nitric oxide (NO) is a critical yet understudied component of the marine nitrogen cycle and atmospheric chemistry, with its concentration, dynamics, and sources in the ocean poorly constrained due to limitations in current measurement methods. Existing techniques often underestimate in situ NO concentrations and fail to capture short-lived events, diurnal cycles, and fine-scale spatial heterogeneity, as NO's high reactivity and short lifetime lead to rapid degradation/loss during sampling. The DINOS project addresses these challenges by developing the first reliable, user-friendly underwater sensor for dissolved NO, offering picomolar (pM) sensitivity and second-scale response. By advancing in situ sensor technology, DINOS minimizes sample loss and handling artifacts, building on the success of WHOI’s ROS instruments (DISCO and SOLARIS). This innovation enables the capture of transient biogeochemical processes, enhancing our understanding of NO’s complex dynamics in marine systems. During the 24-month outgoing phase at Woods Hole Oceanographic Institution (WHOI), the sensor will be developed in collaboration with Dr. Scott Wankel and Dr. Colleen Hansel, leveraging their expertise in ocean sensor design and engineering. The prototype will undergo laboratory testing and calibration at WHOI, followed by field validation. In the 12-month return phase, the sensor will be deployed at the Boknis Eck Time Series Station in Eckernförde Bay (southwestern Baltic Sea), coordinated by Prof. Dr. Hermann Bange at GEOMAR. These advancements will provide unprecedented insights into the role of NO in marine biogeochemical cycles.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-GF - HORIZON TMA MSCA Postdoctoral Fellowships - Global Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

HELMHOLTZ-ZENTRUM FUR OZEANFORSCHUNG KIEL (GEOMAR)
Net EU contribution
€ 401 232,00
Address
WISCHHOFSTRASSE 1-3
24148 Kiel
Germany
Region
Schleswig-Holstein Schleswig-Holstein Kiel, Kreisfreie Stadt
Activity type
Research Organisations
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Total cost
No data

Partners (1)