Middle East oil and gas methane emissions signature captured at a remote site using light hydrocarbon tracers

Autor: Emeric Germain-Piaulenne, Jean-Daniel Paris, Valérie Gros, Pierre-Yves Quéhé, Michael Pikridas, Dominique Baisnée, Antoine Berchet, Jean Sciare, Efstratios Bourtsoukidis

Publikováno v: Atmospheric Environment: X, Vol 22, Iss , Pp 100253- (2024)

The observational characterization of anthropogenic methane (CH4) emissions in the Eastern Mediterranean and Middle East (EMME) region, known for its significant oil and gas (OG) production, remains limited. Light alkanes, such as ethane (C2H6), are

Externí odkaz: https://doaj.org/article/bd23d856696d4330a48d52d8b381c392

A new algorithm to generate a priori trace gas profiles for the GGG2020 retrieval algorithm

Autor: Joshua L. Laughner, Sébastien Roche, Matthäus Kiel, Geoffrey C. Toon, Debra Wunch, Bianca C. Baier, Sébastien Biraud, Huilin Chen, Rigel Kivi, Thomas Laemmel, Kathryn McKain, Pierre-Yves Quéhé, Constantina Rousogenous, Britton B. Stephens, Kaley Walker, Paul O. Wennberg

Publikováno v: Atmospheric Measurement Techniques, 16(5), 1121-1146. COPERNICUS GESELLSCHAFT MBH
Atmospheric Measurement Techniques
Atmospheric Measurement Techniques, 2023, 16 (5), pp.1121-1146. ⟨10.5194/amt-16-1121-2023⟩

Optimal estimation retrievals of trace gas total columns require prior vertical profiles of the gases retrieved to drive the forward model and ensure the retrieval problem is mathematically well posed. For well-mixed gases, it is possible to derive a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57c31e99d29a7e72bc1a4edc3a469c6d
https://research.rug.nl/en/publications/fc942a11-e4bc-4e5f-85eb-e453b2e927d0

Improvements of a low-cost CO2 commercial NDIR sensor for UAV atmospheric mapping applications

Autor: Yunsong Liu, Jean-Daniel Paris, Mihalis Vrekoussis, Panayiota Antoniou, Christos Constantinides, Maximilien Desservettaz, Christos Keleshis, Olivier Laurent, Andreas Leonidou, Carole Philippon, Panagiotis Vouterakos, Pierre-Yves Quéhé, Philippe Bousquet, Jean Sciare

Unmanned Aerial Vehicles (UAVs) provide a cost-effective way to fill in gaps between surface in-situ observations and remote-sensed data from space. In this study, a novel portable CO2 measuring system suitable for operations on-board small-sized UAV

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4c736fb853e5c4073d3c4d7f48ecb5ef
https://doi.org/10.5194/amt-2022-118

EVALUATION OF DENOISING ALGORITHMS APPLIED TO THE REDUCTION OF SPECKLE IN DIGITAL HOLOGRAPHY

Autor: Pierre-Yves Quéhé, Silvio Montresor, P. Picard, Sophie Verhaeghe

Publikováno v: 2015 23rd European Signal Processing Conference (EUSIPCO)
2015 23rd European Signal Processing Conference (EUSIPCO), Aug 2015, Nice, France. pp.2316-2320, ⟨10.1109/EUSIPCO.2015.7362798⟩
EUSIPCO

International audience; In this article we compare image denoising algorithms applied to laser digital holography technique. The presented work fo-cuses on reducing speckle noise contribution. The evaluation methodology lies on images of synthesized

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1dfbd0417e6dca2cdcf38c670e666db
https://hal.archives-ouvertes.fr/hal-02516963

Evaluation of de-noising algorithms for phase data filtering in digital holographic metrology

Autor: Sophie Verhaeghe, Silvio Montresor, Pierre-Yves Quéhé, Pascal Picart

Publikováno v: Digital Holography and Three-Dimensional Imaging, DH 2015
Digital Holography and Three-Dimensional Imaging, DH 2015, OSA, May 2015, Shanghai, China

This paper presents a comparison between image denoising algorithms in the context of speckle noise in phase data from digital holography. Denoising algorithms are tested on simulated noisy speckled phases and images.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dd01370c54f5fe46a72473ccbf3e17a
https://hal.archives-ouvertes.fr/hal-02403248