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COMTESSA SIGNED

Camera Observation and Modelling of 4D Tracer Dispersion in the Atmosphere

Total Cost €

EC-Contrib. €

Partnership

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Outcomes and
results

COMTESSA project word cloud

Explore the words cloud of the COMTESSA project. It provides you a very rough idea of what is the project "COMTESSA" about.

fast phenomena er sensitivity space underlying 3d model lt quantify simultaneous richardson deepen models multiple six volcanic vision atmospheric optical made absolute sensitive estimate uv hz atmosphere constant passive parameterizations code push improvements resolved dimensional dioxide cameras turbulence comtessa reconstruction line ground gt smelters extensively vector campaign transport retrievals pdf sight accuracy radiative lagrangian ir nearly power so2 data density sources dispersion 2d plume time near full tracer tomographic observations turbulent ultraviolet first yielding sampling velocity resolution back revise fumaroles sulfur flow releases eddy altitudes plants limits radiation puff transfer infrared images special concentration instance tower function relative obukhov les probability

Project "COMTESSA" data sheet

The following table provides information about the project.

Coordinator	NORSK INSTITUTT FOR LUFTFORSKNING STIFTELSE Organization address address: INSTITUTTVEIEN 18 city: KJELLER postcode: 2027 website: www.nilu.no contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.
Coordinator Country	Norway [NO]
Project website	https://comtessa-turbulence.net/
Total cost	2˙800˙000 €
EC max contribution	2˙800˙000 € (100%)
Programme	1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
Code Call	ERC-2014-ADG
Funding Scheme	ERC-ADG
Starting year	2015
Duration (year-month-day)	from 2015-11-01 to 2020-10-31

Partnership

Take a look of project's partnership.

#	participants	country	role	EC contrib. [€]
1	NORSK INSTITUTT FOR LUFTFORSKNING STIFTELSE NORSK INSTITUTT FOR LUFTFORSKNING STIFTELSE Organization address address: INSTITUTTVEIEN 18 city: KJELLER postcode: 2027 website: www.nilu.no contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.	NO (KJELLER)	coordinator	2˙800˙000.00

Map

Project objective

COMTESSA will push back the limits of our understanding of turbulence and plume dispersion in the atmosphere by bringing together full four-dimensional (space and time) observations of a (nearly) passive tracer (sulfur dioxide, SO2), with advanced data analysis and turbulence and dispersion modelling.

Observations will be made with six cameras sensitive to ultraviolet (UV) radiation and three cameras sensitive to infrared (IR) radiation. The UV cameras will be built specifically for this project where high sensitivity and fast sampling is important. The accuracy of UV and IR retrievals will be improved by using a state-of-the art-3D radiative transfer model.

Controlled puff and plume releases of SO2 will be made from a tower, which will be observed by all cameras, yielding multiple 2D images of SO2 integrated along the line of sight. The simultaneous observations will allow - for the first time - a tomographic reconstruction of the 3D tracer concentration distribution at high space (< 1 m) and time (>10 Hz) resolution. An optical flow code will be used to determine the eddy-resolved velocity vector field of the plume. Special turbulent phenomena (e.g. plume rise) will be studied using existing SO2 sources (e.g. smelters, power plants, volcanic fumaroles).

Analysis of the novel campaign observations will deepen our understanding of turbulence and tracer dispersion in the atmosphere. For instance, for the first time we will be able to extensively measure the concentration probability density function (PDF) in a plume not only near the ground but also at high-er altitudes; quantify relative and absolute dispersion; estimate the value of the Richardson-Obukhov constant, etc. We will also use the data to evaluate state-of-the-art LES and Lagrangian dispersion models and revise their underlying parameterizations.

COMTESSA’s vision is that the project results will lead to large improvements of tracer transport in all atmospheric models.

Publications

List of publications.
year	authors and title	journal	last update
2018	Anna Solvejg Dinger, Kerstin Stebel, Massimo Cassiani, Hamidreza Ardeshiri, Cirilo Bernardo, Arve Kylling, Soon-Young Park, Ignacio Pisso, Norbert Schmidbauer, Jan Wasseng, Andreas Stohl Observation of turbulent dispersion of artificially released SO<sub>2</sub> puffs with UV cameras published pages: 6169-6188, ISSN: 1867-8548, DOI: 10.5194/amt-11-6169-2018	Atmospheric Measurement Techniques 11/11	2019-04-18

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The information about "COMTESSA" are provided by the European Opendata Portal: CORDIS opendata.