Integration of in-situ chemical sensors and ocean observing platforms

<p>The Subpolar North Atlantic (SPNA) is known for rapid reversals of decadal temperature trends, with ramifications encompassing the large-scale meridional overturning and gyre circulations, Arctic heat and mass balances, or extreme continental weather. Here, we combine datasets derived from sustained ocean observing systems (satellite and in situ), and idealized observation-based modelling (advection-diffusion of a passive tracer) and machine learning technique (ocean profile clustering) to document and explain the most-recent and ongoing cooling-to-warming transition of the SPNA. Following a gradual cooling of the region that was persisting since 2006, a surface-intensified and large-scale warming sharply emerged in 2016 following an ocean circulation shift that enhanced the northeastward penetration of warm and saline waters from the western subtropics. Driving mechanisms and ramification for deep ocean heat uptake will be discussed.</p>

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New chalcogenide glass chemical sensors for S2- and dissolved H2S monitoring

Water Science & Technology ◽

10.2166/wst.2003.0104 ◽

2003 ◽

Vol 47 (2) ◽

pp. 135-140 ◽

Cited By ~ 7

Author(s):

M. Miloshova ◽

D. Baltes ◽

E. Bychkov

Keyword(s):

Process Control ◽

Chalcogenide Glass ◽

Chemical Sensors ◽

Industrial Process ◽

In Situ Monitoring ◽

Potential Hazard ◽

Reliable Monitoring ◽

Industrial Process Control ◽

Monitoring Devices

A non-optimised treatment of wastewaters containing organic and biological substances is very often accompanied by an accidental emanation of hydrogen sulphide H2S and therefore leads (i) to an undesirable odour in the vicinity of water treatment plants, and (ii) to a potential hazard for the neighbouring population. Fast, sensitive and reliable monitoring devices are hence of significant importance. Chalcogenide and chalcohalide glasses are new promising membrane materials for detection of heavy metal ions and toxic anions and particularly well adapted for continuous in situ monitoring and industrial process control. In the present paper, we will discuss analytical characteristics of new chalcogenide glass chemical sensors for detection of S2− and dissolved H2S, which allow reliable process control to be carried out at natural pH of wastewaters.

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Applications and use of in-situ chemical sensors in semiconductor manufacturing

10.1117/12.280920 ◽

1997 ◽

Author(s):

Donald L. Tolliver ◽

George H. Atkinson

Keyword(s):

Chemical Sensors ◽

Semiconductor Manufacturing

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Requirements for an Integrated in situ Atlantic Ocean Observing System From Coordinated Observing System Simulation Experiments

Frontiers in Marine Science ◽

10.3389/fmars.2019.00083 ◽

2019 ◽

Vol 6 ◽

Cited By ~ 12

Author(s):

Florent Gasparin ◽

Stephanie Guinehut ◽

Chongyuan Mao ◽

Isabelle Mirouze ◽

Elisabeth Rémy ◽

...

Keyword(s):

Atlantic Ocean ◽

System Simulation ◽

Simulation Experiments ◽

Ocean Observing

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Assessing economic impacts of environmental research infrastructures: overview of methodological tools

10.5194/gc-2019-14 ◽

2019 ◽

Author(s):

Régis Kalaydjian

Keyword(s):

Economic Impacts ◽

Environmental Research ◽

Related Case ◽

Forecast Performance ◽

Data Flows ◽

Research Infrastructures ◽

Ocean Monitoring ◽

Ocean Observing

Abstract. The data generated by environmental research infrastructures (ENV RIs) are key material to forecast the development conditions of environment sensitive activities: in a context marked by emerging risks from global warming, atmosphere and ocean monitoring is taking up critical importance for these industries. The objective of this paper is to review the main tools used to assess the performance of ENV RIs via their economic impacts. Three impact categories are considered: (1) upstream impacts on equipment suppliers; (2) downstream impacts on observation and forecast performance; (3) feedback impacts on environment in terms of damage mitigation and risk avoidance. For each category, the main impact assessment methods are described against their application scope and limits. An ocean-related case study serves as a practical example: Argo, a global in-situ ocean observing system, helps to gain a better grasp of the chain of primary and processed data flows for ocean monitoring and forecast, and of its functioning. It highlights the issues involved in assessing the different categories of impacts.

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