Browsing NILU Brage by Author "Cassiani, Massimo"
Now showing items 1-20 of 21
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Can statistics of turbulent tracer dispersion be inferred from camera observations of SO2 in the ultraviolet? A modelling study.
Kylling, Arve; Ardeshiri, Hamidreza; Cassiani, Massimo; Dinger, Anna Solvejg; Park, Soon-Young; Pisso, Ignacio; Schmidbauer, Josef Norbert; Stebel, Kerstin; Stohl, Andreas (Peer reviewed; Journal article, 2020)Atmospheric turbulence and in particular its effect on tracer dispersion may be measured by cameras sensitive to the absorption of ultraviolet (UV) sunlight by sulfur dioxide (SO2), a gas that can be considered a passive ... -
Characterization of the atmospheric environment during extreme precipitation events associated with atmospheric rivers in Norway - Seasonal and regional aspects
Michel, Clio; Sorteberg, Asgeir; Eckhardt, Sabine; Weijenborg, Christian; Stohl, Andreas; Cassiani, Massimo (Peer reviewed; Journal article, 2021)Extreme precipitation events in Norway in all seasons are often linked to atmospheric rivers (AR). We show that during the period 1979–2018 78.5% of the daily extreme precipitation events in Southwestern Norway are linked ... -
CO2 Capture Mongstad Project/H&ETQPAmine2. Modelling atmospheric dispersion for components from post combustion amine based CO2 capture.
Knudsen, Svein; Cassiani, Massimo; Karl, Matthias; Slørdal, Leiv Håvard; Tarrasón, Leonor (NILU OR;83/2010, Research report, 2010)Carbon capture by the use of amines from power plants have emissions to air. Amines react chemically in the atmosphere after emission. The substances produced can pose a risk to the environment and human health. This report ... -
Concentration Fluctuations from Localized Atmospheric Releases
Cassiani, Massimo; Bertagni, Matteo B.; Marro, Massimo; Salizzoni, Pietro (Peer reviewed; Journal article, 2020)We review the efforts made by the scientific community in more than seventy years to elucidate the behaviour of concentration fluctuations arising from localized atmospheric releases of dynamically passive and non-reactive ... -
The dynamics of concentration fluctuations within passive scalar plumes in a turbulent neutral boundary layer
Cassiani, Massimo; Pisso, Ignacio; Salizzoni, Pietro; Stohl, Andreas; Stebel, Kerstin (Journal article; Peer reviewed, 2024)We investigate the concentration fluctuations of passive scalar plumes emitted from small, localised (point-like) steady sources in a neutrally stratified turbulent boundary layer over a rough wall. The study utilises ... -
FLEXPART version 11: improved accuracy, efficiency, and flexibility
Bakels, Lucie; Tatsii, Daria; Tipka, Anne; Thompson, Rona Louise; Dütsch, Marina; Blaschek, Michael; Seibert, Petra; Baier, Katharina; Bucci, Silvia; Cassiani, Massimo; Eckhardt, Sabine; Zwaaftink, Christine Groot; Henne, Stephan; Kaufmann, Pirmin; Lechner, Vincent; Maurer, Christian; Mulder, Marie D.; Pisso, Ignacio; Plach, Andreas; Subramanian, Rakesh; Vojta, Martin; Stohl, Andreas (Peer reviewed; Journal article, 2024)Numerical methods and simulation codes are essential for the advancement of our understanding of complex atmospheric processes. As technology and computer hardware continue to evolve, the development of sophisticated code ... -
Inferring surface energy fluxes using drone data assimilation in large eddy simulations
Pirk, Norbert; Aalstad, Kristoffer; Westermann, Sebastian; Vatne, Astrid; van Hove, Alouette; Tallaksen, Lena Merete; Cassiani, Massimo; Katul, Gabriel G. (Journal article, 2022)Spatially representative estimates of surface energy exchange from field measurements are required for improving and validating Earth system models and satellite remote sensing algorithms. The scarcity of flux measurements ... -
Lagrangian Stochastic Modelling of Dispersion in the Convective Boundary Layer with Skewed Turbulence Conditions and a Vertical Density Gradient: Formulation and Implementation in the FLEXPART Model
Cassiani, Massimo; Stohl, Andreas; Brioude, Jerome (Journal article; Peer reviewed, 2015) -
Methane emissions from the Nord Stream subsea pipeline leaks
Harris, Stephen; Schwietzke, Stefan; France, James L.; Salinas, Nataly Velandia; Fernandez, Tania Meixus; Randles, Cynthia; Guanter, Luis; Irakulis-Loitxate, Itziar; Calcan, Andreea; Aben, Ilse; Abrahamsson, Katarina; Balcombe, Paul; Berchet, Antoine; Biddle, Louise C.; Bittig, Henry C.; Böttcher, Christian; Bouvard, Timo; Broström, Göran; Bruch, Valentin; Cassiani, Massimo; Chipperfield, Martyn P.; Ciais, Philippe; Damm, Ellen; Dammers, Enrico; van der Gon, Hugo Denier; Dogniaux, Matthieu; O'Dowd, Emily; Dupouy, François; Eckhardt, Sabine; Evangeliou, Nikolaos; Feng, Wuhu; Jia, Mengwei; Jiang, Fei; Kaiser-weiss, Andrea; Kamoun, Ines; Kerridge, Brian J.; Lampert, Astrid; Lana, José; Li, Fei; Maasakkers, Joannes D.; Maclean, Jean-Philippe W.; Mamtimin, Buhalqem; Marshall, Julia; Mauger, Gédéon; Mekkas, Anouar; Mielke, Christian; Mohrmann, Martin; Moore, David P.; Nanni, Ricardo; Pätzold, Falk; Pison, Isabelle; Pisso, Ignacio; Platt, Stephen Matthew; Préa, Raphaël; Queste, Bastien Y.; Ramonet, Michel; Rehder, Gregor; Remedios, John J; Reum, Friedemann; Roiger, Anke; Schmidbauer, Norbert; Siddans, Richard; Sunkisala, Anusha; Thompson, Rona Louise; Varon, Daniel J.; Ventres, Lucy J.; Chris, Wilson; Zhang, Yuzhong (Peer reviewed; Journal article, 2025)The amount of methane released to the atmosphere from the Nord Stream subsea pipeline leaks remains uncertain, as reflected in a wide range of estimates1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18. A lack of information ... -
Observation of turbulent dispersion of artificially released SO2 puffs with UV cameras
Dinger, Anna Solvejg; Stebel, Kerstin; Cassiani, Massimo; Ardeshiri, Hamidreza; Bernardo, Cirilo; Kylling, Arve; Park, Soon-Young; Pisso, Ignacio; Schmidbauer, Norbert; Wasseng, Jan Henrik; Stohl, Andreas (Journal article; Peer reviewed, 2018)In atmospheric tracer experiments, a substance is released into the turbulent atmospheric flow to study the dispersion parameters of the atmosphere. That can be done by observing the substance's concentration distribution ... -
On the Convergence and Capability of the Large-Eddy Simulation of Concentration Fluctuations in Passive Plumes for a Neutral Boundary Layer at Infinite Reynolds Number
Ardeshiri, Hamidreza; Cassiani, Massimo; Park, Soon-Young; Stohl, Andreas; Pisso, Ignacio; Dinger, Anna Solvejg (Peer reviewed; Journal article, 2020)Large-eddy simulation (LES) experiments have been performed using the Parallelized LES Model (PALM). A methodology for validating and understanding LES results for plume dispersion and concentration fluctuations in an ... -
A Precipitation Isotopic Response in 2014–2015 to Moisture Transport Changes in the Central Himalayas
Axelsson, Josefine; Gao, Jing; Eckhardt, Sabine; Cassiani, Massimo; Cheng, Deliang; Zhang, Qiong (Peer reviewed; Journal article, 2023)The impact of moisture transport and sources on precipitation stable isotopes (δ18O and d-excess) in the central Himalayas are crucial to understanding the climatic archives. However, this is still unclear due to the lack ... -
Report on models, model needs and requirements. Contribution to task 5.
Berglen, Tore Flatlandsmo; Cassiani, Massimo; Karl, Matthias; Knudsen, Svein (NILU OR; 50/2008, Research report, 2008)This report gives an overview of models, model processes, and the needs and requirements concerning models to be applied in the project “Amines, emissions to air”. The atmospheric cycle of amines, i.e. emissions, transport, ... -
Source–receptor matrix calculation for deposited mass with the Lagrangian particle dispersion model FLEXPART v10.2 in backward mode
Eckhardt, Sabine; Cassiani, Massimo; Evangeliou, Nikolaos; Sollum, Espen; Pisso, Ignacio; Stohl, Andreas (Journal article; Peer reviewed, 2017) -
Stochastic fields method for sub-grid scale emission heterogeneity in mesoscale atmospheric dispersion models
Cassiani, Massimo; Vinuesa, Jean-François; Galmarini, Stefano; Denby, Bruce (Journal article; Peer reviewed, 2010) -
The dispersion characteristics of air pollution from the world's megacities
Cassiani, Massimo; Stohl, Andreas; Eckhardt, Sabine (Journal article; Peer reviewed, 2013) -
The influence of cruise ship emissions on air pollution in Svalbard - a harbinger of a more polluted Arctic?
Eckhardt, Sabine; Hermansen, Ove; Grythe, Henrik; Fiebig, Markus; Stebel, Kerstin; Cassiani, Massimo; Bäcklund, Are; Stohl, Andreas (Journal article; Peer reviewed, 2013) -
The Lagrangian particle dispersion model FLEXPART version 10.4
Pisso, Ignacio; Sollum, Espen; Grythe, Henrik; Kristiansen, Nina Iren; Cassiani, Massimo; Eckhardt, Sabine; Arnold, Delia; Morton, Don; Thompson, Rona Louise; Zwaaftink, Christine Groot; Evangeliou, Nikolaos; Sodemann, Harald; Haimberger, Leopold; Henne, Stephan; Brunner, Dominik; Burkhart, John; Fouilloux, Anne Claire; Brioude, Jerome; Philipp, Anne; Seibert, Petra; Stohl, Andreas (Journal article; Peer reviewed, 2019)The Lagrangian particle dispersion model FLEXPART in its original version in the mid-1990s was designed for calculating the long-range and mesoscale dispersion of hazardous substances from point sources, such as those ... -
The Lagrangian particle dispersion model FLEXPART-WRF version 3.1
Brioude, J; Arnold, D; Stohl, Andreas; Cassiani, Massimo; Morton, D; Seibert, P; Angevine, W; Evan, S; Dingwell, A; Fast, JD; Easter, RC; Pisso, Ignacio Javier; Burkhart, John; Wotawa, G (Journal article; Peer reviewed, 2013)The Lagrangian particle dispersion model FLEXPART was originally designed for calculating long-range and mesoscale dispersion of air pollutants from point sources, such that occurring after an accident in a nuclear power ... -
The offline Lagrangian particle model FLEXPART–NorESM/CAM (v1): model description and comparisons with the online NorESM transport scheme and with the reference FLEXPART model
Cassiani, Massimo; Stohl, Andreas; Oliviè, Dirk Jan Leo; Seland, Øyvind; Bethke, Ingo; Pisso, Ignacio; Iversen, Trond (Journal article; Peer reviewed, 2016)