Results 31 to 40 of about 4,244 (217)

Lagrangian Particle Dispersion Models in the Grey Zone of Turbulence: Adaptations to FLEXPART-COSMO for Simulations at 1 km Grid Resolution. [PDF]

Boundary Layer Meteorol, 2022
Lagrangian particle dispersion models (LPDMs) are frequently used for regional-scale inversions of greenhouse gas emissions. However, the turbulence parameterizations used in these models were developed for coarse resolution grids, hence, when moving to ...
Katharopoulos I, Brunner D, Emmenegger L, Leuenberger M, Henne S.   +4 more
europepmc   +2 more sources

Comparison of Moisture Sources and Sinks Estimated with Different Versions of FLEXPART and FLEXPART-WRF Models Forced with ECMWF Reanalysis Data

Journal of Hydrometeorology, 2023
Abstract Moisture transport and changes in the source–sink relationship play a vital role in the atmospheric branch of the hydrological cycle. Lagrangian approaches have emerged as the dominant tool to account for estimations of moisture sources and sinks; those that use the FLEXPART model fed by ERA-Interim reanalysis are most ...
José C. Fernández-Alvarez, Marta Vázquez, Albenis Pérez-Alarcón, Raquel Nieto, Luis Gimeno   +4 more
openaire   +2 more sources

Identifying source regions of air masses sampled at the tropical high-altitude site of Chacaltaya using WRF-FLEXPART and cluster analysis

Atmospheric Chemistry and Physics, 2021
. Observations of aerosol and trace gases in the remote troposphere are vital to quantify background concentrations and identify long-term trends in atmospheric composition on large spatial scales.
D. Aliaga, V. Sinclair, M. Andrade, P. Artaxo, S. Carbone, E. Kadantsev, P. Laj, A. Wiedensohler, R. Krejci, Federico Bianchi   +9 more
semanticscholar   +2 more sources

Spatiotemporal variation of radionuclide dispersion from nuclear power plant accidents using FLEXPART mini-ensemble modeling

Atmospheric Chemistry and Physics, 2023
. We investigate the spatiotemporal distribution of the radionuclides including iodine-131 (131I) and cesium-137 (137Cs), transported to Qatar from fictitious accidents at the upwind Barakah nuclear power plant (B-NPP) in the United Arab Emirates (UAE ...
S. O. Nabavi, Theodoros Christoudias, Y. Proestos, C. Fountoukis, Huda Al-Sulaiti, J. Lelieveld   +5 more
semanticscholar   +1 more source

High-resolution inverse modelling of European CH4 emissions using the novel FLEXPART-COSMO TM5 4DVAR inverse modelling system

Atmospheric Chemistry and Physics, 2022
. We present a novel high-resolution inverse modelling system (“FLEXVAR”) based on FLEXPART-COSMO back trajectories driven by COSMO meteorological fields at 7 km×7 km resolution over the European COSMO-7 domain and the four-dimensional variational (4DVAR)
P. Bergamaschi, A. Segers, D. Brunner, Jean-Matthieu Haussaire, S. Henne, M. Ramonet, T. Arnold, Tobias Biermann, Huilin Chen, S. Conil, M. Delmotte, G. Forster, A. Frumau, D. Kubistin, Xin Lan, M. Leuenberger, M. Lindauer, Morgan Lopez, G. Manca, Jennifer Müller-Williams, S. O'Doherty, B. Scheeren, M. Steinbacher, P. Trisolino, G. Vítková, C. Yver Kwok   +25 more
semanticscholar   +1 more source

Technical note: A high-resolution inverse modelling technique for estimating surface CO2 fluxes based on the NIES-TM–FLEXPART coupled transport model and its adjoint

, 2021
. We developed a high-resolution surface flux inversion system based on the global Lagrangian–Eulerian coupled tracer transport model composed of National Institute for Environmental Studies Transport Model (NIES-TM) and FLEXible PARTicle dispersion ...
Shamil Maksyutov, T. Oda, M. Saito, Rajesh Janardanan, D. Belikov, J. Kaiser, R. Zhuravlev, A. Ganshin, V. Valsala, A. Andrews, L. Chmura, E. Dlugokencky, L. Haszpra, R. Langenfelds, T. Machida, T. Nakazawa, M. Ramonet, C. Sweeney, D. Worthy   +18 more
semanticscholar   +1 more source

Particle phase-state variability in the North Atlantic free troposphere during summertime is determined by atmospheric transport patterns and sources [PDF]

Atmospheric Chemistry and Physics, 2022
Free tropospheric aerosol particles have important but poorly constrained climate effects due to transformations of their physicochemical properties during long-range transport.
Z. Cheng, M. Morgenstern, B. Zhang, M. Fraund, N. N. Lata, R. Brimberry, M. A. Marcus, L. Mazzoleni, P. Fialho, S. Henning, B. Wehner, C. Mazzoleni, S. China   +12 more
doaj   +1 more source

Enhancement of carbon monoxide concentration in atmosphere due to large scale forest fire of Uttarakhand [PDF]

PeerJ, 2019
The richly forested Indian state of Uttarakhand experienced widespread forest fires in April to May 2016. The current study examines dispersion of carbon monoxide (CO) from the source regions of forest fire to distant places, using the Lagrangian ...
Jaya Thakur, Prajesh Thever, Biswadip Gharai, MVR Sesha Sai, VNRao Pamaraju   +4 more
doaj   +2 more sources

Interannual variation in moisture sources for the first rainy season in South China estimated by the FLEXPART model

Journal of Climate, 2021
The first rainy season (April-May-June) of South China includes the phases before and after the onset of South China Sea Summer Monsoon (hereafter SCSSM). Abundant moisture supply is the key dynamic process for precipitation formation.
Dongdong Peng, Tianjun Zhou, Yong Sun, Ailan Lin   +3 more
semanticscholar   +1 more source

Effects of mixing on evolution of hydrocarbon ratios in the troposphere [PDF]

, 2007
Nonmethane hydrocarbon (NMHC) concentration ratios provide useful indicators of tropospheric oxidation and transport processes. However, the influences of both photochemical and mixing processes are inextricably linked in the evolution of these ratios ...
Atlas, EL, Blake, DR, de Gouw, JA, Forster, C, Goldan, PD, Kuster, WC, Parrish, DD, Stohl, A   +7 more
core   +1 more source