المؤلفون: Jarrige, Domitille, Haridas, Sajeet, Bleykasten-Grosshans, Claudine, Joly, Muriel, Nadalig, Thierry, Sancelme, Martine, Vuilleumier, Stéphane, Grigoriev, Igor V, Amato, Pierre, Bringel, Françoise

المصدر: G3: Genes, Genomes, Genetics. 12(12)

مصطلحات موضوعية: Microbiology, Biological Sciences, Bioinformatics and Computational Biology, Genetics, Human Genome, Saccharomyces cerevisiae, Water, Basidiomycota, Sequence Analysis, DNA, Tremellaceae, mitochondrial genome, de novo sequencing, fungi, airborne microorganisms, transposable elements, Dioszegia hungarica strain PDD-24b-2, aeromicrobiology, fungal spore, cold environment, Dioszegia hungarica strain PDD-24b-2, Tremellaceae, Biochemistry and cell biology, Statistics

الوصف: The genome of the basidiomycete yeast Dioszegia hungarica strain PDD-24b-2 isolated from cloud water at the summit of puy de Dôme (France) was sequenced using a hybrid PacBio and Illumina sequencing strategy. The obtained assembled genome of 20.98 Mb and a GC content of 57% is structured in 16 large-scale contigs ranging from 90 kb to 5.56 Mb, and another 27.2 kb contig representing the complete circular mitochondrial genome. In total, 8,234 proteins were predicted from the genome sequence. The mitochondrial genome shows 16.2% cgu codon usage for arginine but has no canonical cognate tRNA to translate this codon. Detected transposable element (TE)-related sequences account for about 0.63% of the assembled genome. A dataset of 2,068 hand-picked public environmental metagenomes, representing over 20 Tbp of raw reads, was probed for D. hungarica related ITS sequences, and revealed worldwide distribution of this species, particularly in aerial habitats. Growth experiments suggested a psychrophilic phenotype and the ability to disperse by producing ballistospores. The high-quality assembled genome obtained for this D. hungarica strain will help investigate the behavior and ecological functions of this species in the environment.

وصف الملف: application/pdf

الوصول الحر: https://escholarship.org/uc/item/6r9060jrTest

المؤلفون: Pailler, Lucas, Wirgot, Nolwenn, Joly, Muriel, Renard, Pascal, Mouchel-Vallon, Camille, Bianco, Angelica, Leriche, Maud, Sancelme, Martine, Job, Aurélie, Patryl, Luc, Armand, Patrick, Delort, Anne-Marie, Chaumerliac, Nadine, Deguillaume, Laurent

المساهمون: Laboratoire de Météorologie Physique (LaMP), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Institut de Chimie de Clermont-Ferrand (ICCF), Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Institut national polytechnique Clermont Auvergne (INP Clermont Auvergne), Université Clermont Auvergne (UCA)-Université Clermont Auvergne (UCA), Laboratoire d'aérologie (LAERO), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS), CEA/DAM Arpajon (CEA/DAM), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)

المصدر: ISSN: 2634-3606.

مصطلحات موضوعية: [SDE]Environmental Sciences

الوصف: International audience ; Biodegradation is competitive with photochemistry, especially in summer and at night. Formic acid is the most impacted compound.

العلاقة: hal-04168672; https://uca.hal.science/hal-04168672Test; https://uca.hal.science/hal-04168672/documentTest; https://uca.hal.science/hal-04168672/file/d2ea00153e.pdfTest

الإتاحة: https://doi.org/10.1039/D2EA00153ETest
https://uca.hal.science/hal-04168672Test
https://uca.hal.science/hal-04168672/documentTest
https://uca.hal.science/hal-04168672/file/d2ea00153e.pdfTest

المؤلفون: Charpentier, Thomas, Joly, Muriel, Judon, Céline, Sancelme, Martine, Abrantes, Magali, Vaïtilingom, Mickaël, Ghaffar, Christelle, Brissy, Maxence, Leriche, Maud, Delort, Anne-Marie, Deguillaume, Laurent, Amato, Pierre

المصدر: Aerobiologia; Jun2024, Vol. 40 Issue 2, p297-302, 6p

مستخلص: The viable bacterial assemblages in clouds at Réunion Island (Indian Ocean) were examined through culture-based approach. A total of 176 isolates were recovered from 15 independent cloud events collected during 3 field campaigns, and identified to the species level through full length 16S rRNA gene sequencing. As often in atmospheric samples, Alpha-, Beta- and Gamma-proteobacteria dominated, along with Actinobacteria, Firmicutes, and Bacteroidetes, depicting these as the backbone of the global aeromicrobiome. A comparative analysis with similar work from a cloud sampling site in Central France revealed site-specificities, and numerous common species. These latter included members of Pseudomonas, Sphingomonas, Bacillus, Staphylococcus, Rhodococcus and others, whose such widespread presence in clouds supports the existence of a pan-atmospheric microbiome. This also confirms that cultures remain powerful methods in the description of the viable microbial diversity by allowing deep taxonomic affiliation. [ABSTRACT FROM AUTHOR]

: Copyright of Aerobiologia is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

المؤلفون: Jarrige, Domitille, Nadalig, Thierry, Joly, Muriel, Sancelme, Martine, Vuilleumier, Stéphane, Amato, Pierre, Bringel, Françoise

المساهمون: Génétique moléculaire, génomique, microbiologie (GMGM), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie de Clermont-Ferrand (ICCF), Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Institut national polytechnique Clermont Auvergne (INP Clermont Auvergne), Université Clermont Auvergne (UCA)-Université Clermont Auvergne (UCA), ANR-19-CE01-0004,METACLOUD,Intégration du métabolisme microbien dans la chimie des nuages : des "omiques" au modèle(2019), ANR-10-INBS-0009,France Génomique,Organisation et montée en puissance d'une Infrastructure Nationale de Génomique(2010), ANR-11-INBS-0013,IFB (ex Renabi-IFB),Institut français de bioinformatique(2011)

المصدر: EISSN: 2576-098X ; Microbiology Resource Announcements ; https://hal.science/hal-03806374Test ; Microbiology Resource Announcements, 2022, ⟨10.1128/mra.00684-22⟩

مصطلحات موضوعية: [SDE]Environmental Sciences

الوصف: International audience ; The complete genome of Sphingomonas aerolata PDD-32b-11, a bacterium isolated from cloud water, was sequenced. It features four circular replicons, a chromosome of 3.99 Mbp, and three plasmids. Two putative rhodopsin-encoding genes were detected which might act as proton pumps to harvest light energy.

العلاقة: hal-03806374; https://hal.science/hal-03806374Test; https://hal.science/hal-03806374/documentTest; https://hal.science/hal-03806374/file/Jarrige%20etal2022,%2032b-11%20SPHINGO.pdfTest

الإتاحة: https://doi.org/10.1128/mra.00684-22Test
https://hal.science/hal-03806374Test
https://hal.science/hal-03806374/documentTest
https://hal.science/hal-03806374/file/Jarrige%20etal2022,%2032b-11%20SPHINGO.pdfTest

المؤلفون: Renard, Pascal, Canet, Isabelle, Sancelme, Martine, Matulova, Maria, Uhliarikova, Iveta, Eyheraguibel, Boris, Nauton, Lionel, Devemy, Julien, Traïkia, Mounir, Malfreyt, Patrice, Delort, Anne-Marie

المصدر: https://www.intechopen.com/books/7735Test.

مصطلحات موضوعية: Surfactants and Detergents

الوصف: A new scientific hypothesis states that biosurfactants from cloud microorganism origin could change the surface tension of aerosols and thus the mode of precipitations. In order to check this hypothesis, our team has screened a collection of 480 microbial strains isolated from cloud waters for the production of biosurfactants and showed that 42% of these strains were producing such molecules. In the present work, we isolated and identified by LC-MS-MS lipopeptides produced from three strains issued from this screening. Viscosin and massetolide E (cyclic lipopeptides) were produced by Pseudomonas sp. PDD-14b-2, and syringafactins (linear lipopeptides) were produced by Xanthomonas campestris PDD-32b-52 and Pseudomonas syringae PDD-32b-74. The critical micelle concentration (CMC) of these biosurfactants was determined using the pendant drop method. Finally, two approaches of molecular dynamics were used to model the conformation of viscosin and syringafactin A at the water-air interface: one is based on all-atoms simulation (CHARMM force field), while the other one on coarse-grain (CG) simulation (MARTINI force field). To conclude, this work shows how the biodiversity of the cloud microbiota can be explored to search and produce biosurfactants of interest both for atmospheric sciences and also for biotechnological applications.

العلاقة: https://mts.intechopen.com/articles/show/title/cloud-microorganisms-an-interesting-source-of-biosurfactantsTest

الإتاحة: https://doi.org/10.5772/intechopen.85621Test
https://mts.intechopen.com/articles/show/title/cloud-microorganisms-an-interesting-source-of-biosurfactantsTest

المؤلفون: Baray, Jean-Luc, Deguillaume, Laurent, Colomb, Aurélie, Sellegri, Karine, Freney, Evelyn, Rose, Clémence, van Baelen, Joël, Pichon, Jean-Marc, Picard, David, Fréville, Patrick, Bouvier, Laetitia, Ribeiro, Mickaël, Amato, Pierre, Banson, Sandra, Bianco, Angelica, Borbon, Agnès, Bourcier, Lauréline, Bras, Yannick, Brigante, Marcello, Cacault, Philippe, Chauvigné, Aurélien, Charbouillot, Tiffany, Chaumerliac, Nadine, Delort, Anne-Marie, Delmotte, Marc, Dupuy, Régis, Farah, Antoine, Febvre, Guy, Flossmann, Andrea, Gourbeyre, Christophe, Hervier, Claude, Hervo, Maxime, Huret, Nathalie, Joly, Muriel, Mourguy, Kazan, Victor, Lopez, Morgan, Mailhot, Gilles, Marinoni, Angela, Masson, Olivier, Montoux, Nadège, Parazols, Marius, Peyrin, Frederic, Pointin, Yves, Ramonet, Michel, Rocco, Manon, Sancelme, Martine, Sauvage, Stéphane, Schmidt, Martina, Tison, Emmanuel, Vaitilingom, Mickaël, Villani, Paolo, Wang, Miao, Yver-Kwok, Camille, Laj, Paolo

المساهمون: Laboratoire de physique de l'atmosphère (LPA), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Météorologie Physique (LaMP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS), Observatoire de Physique du Globe de Clermont-Ferrand (OPGC), Institut de Chimie de Clermont-Ferrand (ICCF), SIGMA Clermont (SIGMA Clermont)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d’Optique Atmosphérique - UMR 8518 (LOA), Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), ICOS-RAMCES (ICOS-RAMCES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), MeteoSwiss, Federal Office of Meteorology and Climatology MeteoSwiss, CNR Institute of Atmospheric Sciences and Climate (ISAC), National Research Council of Italy, Laboratoire d'étude et d'expertise sur la radioactivité de l'environnement (IRSN/PSE-ENV/SEREN/LEREN), Service d'expertise et d'étude en radioprotection des populations et de la radioactivité dans l'environnement (IRSN/PSE-ENV/SEREN), Institut de Radioprotection et de Sûreté Nucléaire (IRSN)-Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Laboratoire de l'Atmosphère et des Cyclones (LACy), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS)-Météo-France, Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), École des Mines de Douai (Mines Douai EMD), Institut Mines-Télécom Paris (IMT), Ecole nationale supérieure Mines-Télécom Lille Douai (IMT Lille Douai), ICOS-ATC (ICOS-ATC), Institut des Géosciences de l’Environnement (IGE), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)

المصدر: ISSN: 1867-1381.

مصطلحات موضوعية: [CHIM]Chemical Sciences, [SDU]Sciences of the Universe [physics]

الوصف: International audience ; For the last 25 years, CO-PDD (Cézeaux-Aulnat-Opme-puy de Dôme) has evolved to become a full instrumented platform for atmospheric research. It has received credentials as a national observing platform in France and is internationally recognized as a global station in the GAW (Global Atmosphere Watch) network. It is a reference site of European and national research infrastructures ACTRIS (Aerosol Cloud and Trace gases Research Infrastructure) and ICOS (Integrated Carbon Observing System). The site located on top of the puy de Dôme mountain (1465 m a.s.l.) is completed by additional sites located at lower altitudes and adding the vertical dimension to the atmospheric observations: Opme (660 m a.s.l.), Cézeaux (410 m), and Aulnat (330 m). The integration of different sites offers a unique combination of in situ and remote sensing measurements capturing and documenting the variability of particulate and gaseous atmospheric composition, but also the optical, biochemical, and physical properties of aerosol particles, clouds, and precipitations. Given its location far away from any major emission sources, its altitude, and the mountain orography, the puy de Dôme station is ideally located to sample different air masses in the boundary layer or in the free troposphere depending on time of day and seasons. It is also an ideal place to study cloud properties with frequent presence of clouds at the top in fall and winter. As a result of the natural conditions prevailing at the site and of the very exhaustive instrumental deployment, scientific studies at the puy de Dôme strongly contribute to improving knowledge in atmospheric sciences, including the characterization of trends and variability, the understanding of complex and interconnected processes (microphysical, chemical, biological, chemical and dynamical), and the provision of reference information for climate/chemistry models. In this context, CO-PDD is a pilot site to conduct instrumental development inside its wind tunnel for testing ...

العلاقة: hal-02883526; https://hal.science/hal-02883526Test; https://hal.science/hal-02883526/documentTest; https://hal.science/hal-02883526/file/amt-13-3413-2020.pdfTest

الإتاحة: https://doi.org/10.5194/amt-13-3413-2020Test
https://hal.science/hal-02883526Test
https://hal.science/hal-02883526/documentTest
https://hal.science/hal-02883526/file/amt-13-3413-2020.pdfTest

المؤلفون: Jaber, Saly, Lallement, Audrey, Sancelme, Martine, Leremboure, Martin, Mailhot, Gilles, Ervens, Barbara, Delort, Anne-Marie

مصطلحات موضوعية: article, Verlagsveröffentlichung

الوصف: The sinks of hydrocarbons in the atmosphere are usually described by oxidation reactions in the gas and aqueous (cloud) phases. Previous lab studies suggest that in addition to chemical processes, biodegradation by bacteria might also contribute to the loss of organics in clouds; however, due to the lack of comprehensive data sets on such biodegradation processes, they are not commonly included in atmospheric models. In the current study, we measured the biodegradation rates of phenol and catechol, which are known pollutants, by one of the most active strains selected during our previous screening in clouds (Rhodococcus enclensis). For catechol, biodegradation is about 10 times faster than for phenol. The experimentally derived biodegradation rates are included in a multiphase box model to compare the chemical loss rates of phenol and catechol in both the gas and aqueous phases to their biodegradation rate in the aqueous phase under atmospheric conditions. Model results show that the degradation rates in the aqueous phase by chemical and biological processes for both compounds are similar to each other. During day time, biodegradation of catechol is even predicted to exceed the chemical activity in the aqueous phase and to represent a significant sink (17 %) of total catechol in the atmospheric multiphase system. In general, our results suggest that atmospheric multiphase models may be incomplete for highly soluble organics as biodegradation may represent an unrecognized efficient loss of such organics in cloud water.

وصف الملف: electronic

العلاقة: Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.htmlTest -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847Test -- 1680-7324; https://doi.org/10.5194/acp-20-4987-2020Test; https://noa.gwlb.de/receive/cop_mods_00051378Test; https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00051034/acp-20-4987-2020.pdfTest; https://acp.copernicus.org/articles/20/4987/2020/acp-20-4987-2020.pdfTest

الإتاحة: https://doi.org/10.5194/acp-20-4987-2020Test
https://noa.gwlb.de/receive/cop_mods_00051378Test
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00051034/acp-20-4987-2020.pdfTest
https://acp.copernicus.org/articles/20/4987/2020/acp-20-4987-2020.pdfTest

المؤلفون: Dillon, Kevin, P, Correa, Florence, Judon, Celine, Sancelme, Martine, Fennell, Donna, E, Delort, Anne-Marie, Amato, Pierre

المساهمون: Department of Environmental Sciences New Brunswick, School of Environmental and Biological Sciences New Brunswick, Rutgers, The State University of New Jersey New Brunswick (RU), Rutgers University System (Rutgers)-Rutgers University System (Rutgers)-Rutgers, The State University of New Jersey New Brunswick (RU), Rutgers University System (Rutgers)-Rutgers University System (Rutgers), Institut de Chimie de Clermont-Ferrand (ICCF), SIGMA Clermont (SIGMA Clermont)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)

المصدر: ISSN: 0099-2240.

مصطلحات موضوعية: bioaerosols, dispersal, microalgae, Chlorellaceae, Trebouxiales, Chroococcidiopsidales, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, [SDU]Sciences of the Universe [physics], [SDV]Life Sciences [q-bio]

الوصف: International audience ; The atmosphere contains diverse living microbes, of which the heterotrophic community has been the best studied. Microbes with other trophic modes, such as photoautotrophy, have received much less attention. In this study, culture-independent and dependent methods were used to examine the presence and diversity of oxygenic photoautotrophic microbes in clouds and rain collected at or around puy de Dôme Mountain, central France. Cloud water was collected from the summit of puy de Dôme (1,465 m above sea level [a.s.l.]) for cultivation and metagenomic analysis. Cyanobacteria, diatoms, green algae, and other oxygenic photoautotrophs were found to be recurrent members of clouds, while green algae affiliated with the Chlorellaceae were successfully cultured from three different clouds. Additionally, rain samples were collected below the mountain from Opme meteorological station (680 m a.s.l.). The abundance of chlorophyll a-containing cells and the diversity of cyanobacteria and green algae in rain were assessed by flow cytometry and amplicon sequencing. The corresponding downward flux of chlorophyll a-containing organisms to the ground, entering surface ecosystems with rain, varied with time and was estimated to be between ∼1 and >300 cells cm−2 day−1 during the sampling period. Besides abundant pollen from Pinales and Rosales, cyanobacteria of the Chroococcidiopsidales and green algae of the Trebouxiales were dominant in rain samples. Certain members of these taxa are known to be ubiquitous and stress tolerant and could use the atmosphere for dispersal. Overall, our results indicate that the atmosphere carries diverse, viable oxygenic photoautotrophic microbes and acts as a dispersal vector for this microbial guild.

العلاقة: hal-03033301; https://hal.science/hal-03033301Test; https://hal.science/hal-03033301/documentTest; https://hal.science/hal-03033301/file/Dillon%20et%20al.%202021.pdfTest

الإتاحة: https://doi.org/10.1128/AEM.01850-20Test
https://hal.science/hal-03033301Test
https://hal.science/hal-03033301/documentTest
https://hal.science/hal-03033301/file/Dillon%20et%20al.%202021.pdfTest

المؤلفون: Duflot, Valentin, Tulet, Pierre, Flores, Olivier, Barthe, Christelle, Colomb, Aurélie, Deguillaume, Laurent, Vaitilingom, Mickaël, Perring, Anne, Huffman, Alex, Hernandez, Mark, T, Sellegri, Karine, Robinson, Ellis, O'Connor, David, H, Gomez, Odessa, M, Burnet, Frédéric, Bourrianne, Thierry, Strasberg, Dominique, Rocco, Manon, Bertram, Allan, K., Chazette, Patrick, Totems, Julien, Fournel, Jacques, Stamenoff, Pierre, Metzger, Jean-Marc, Chabasset, Mathilde, Rousseau, Clothilde, Bourrianne, Eric, Sancelme, Martine, Delort, Anne-Marie, Wegener, Rachel, E, Chou, Cedric, Elizondo, Pablo

المساهمون: Laboratoire de l'Atmosphère et des Cyclones (LACy), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS)-Météo-France, Peuplements végétaux et bioagresseurs en milieu tropical (UMR PVBMT), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Université de La Réunion (UR), Laboratoire de météorologie physique (LaMP), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Synthèse et étude de systèmes à intêret biologique (SEESIB), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Météorologie Physique (LaMP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS), University of Wisconsin-Madison, Centre national de recherches météorologiques (CNRM), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS), Department of Chemistry Vancouver (UBC Chemistry), University of British Columbia (UBC), Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Chimie Atmosphérique Expérimentale (CAE), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), SIGMA Clermont (SIGMA Clermont)

المصدر: ISSN: 1680-7316.

مصطلحات موضوعية: [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology, [SDE.BE]Environmental Sciences/Biodiversity and Ecology

الوصف: International audience ; The Forests gAses aeRosols Clouds Exploratory (FARCE) campaign was conducted in March-April 2015 on the tropical island of La Réunion. For the first time, several scientific teams from different disciplines collaborated to provide reference measurements and characterization of La Réunion vegetation, volatile organic compounds (VOCs), biogenic VOCs (BVOCs), (bio)aerosols and composition of clouds, with a strong focus on the Maïdo mountain slope area. The main observations obtained during this 2-month intensive field campaign are summarized. They include characterizations of forest structure, concentrations of VOCs and precursors emitted by forests, aerosol loading and optical properties in the planetary boundary layer (PBL), formation of new particles by nucleation of gas-phase precursors, ice-nucleating particles concentrations, and biological loading in both cloud-free and cloudy conditions. Simulations and measurements confirm that the Maïdo Observatory lies within the PBL from late morning to late evening and that, when in the PBL, the main primary sources impacting the Maïdo Observatory are of marine origin via the Indian Ocean and of bio-genic origin through the dense forest cover. They also show that (i) the marine source prevails less and less while reaching the observatory; (ii) when in the PBL, depending on the lo-calization of a horizontal wind shear, the Maïdo Observatory can be affected by air masses coming directly from the ocean and passing over the Maïdo mountain slope, or coming from inland; (iii) bio-aerosols can be observed in both cloud-free and cloudy conditions at the Maïdo Observatory; (iv) BVOC emissions by the forest covering the Maïdo mountain slope can be transported upslope within clouds and are a potential cause of secondary organic aerosol formation in the aqueous phase at the Maïdo Observatory; and (v) the simulation of dynamics parameters, emitted BVOCs and cloud life cycle in the Meso-NH model are realistic, and more advanced Meso-NH simulations should use ...

العلاقة: hal-02269845; https://hal.science/hal-02269845Test; https://hal.science/hal-02269845/documentTest; https://hal.science/hal-02269845/file/2019-Duflot_acp-19-10591-2019.pdfTest

الإتاحة: https://doi.org/10.5194/acp-19-10591-2019Test
https://hal.science/hal-02269845Test
https://hal.science/hal-02269845/documentTest
https://hal.science/hal-02269845/file/2019-Duflot_acp-19-10591-2019.pdfTest

المؤلفون: Wirgot, Nolwen, Lagree, Marie, Traikia, Mounir, Besaury, Ludovic, Amato, Pierre, Canet, Isabelle, Sancelme, Martine, Jousse, Cyril, Dieme, Binta, Lyan, Bernard

المساهمون: Delort, Anne-Marie

المصدر: Scientific Reports (9), . (2019)

مصطلحات موضوعية: Autre (Sciences du Vivant), Chimie analytique, Analytical chemistry

وصف الملف: application/pdf

الإتاحة: https://doi.org/10.1038/s41598-019-49319-2Test
http://prodinra.inra.fr/ft/0BF329FE-7706-414F-A3BB-ADFAFE32B415Test
http://prodinra.inra.fr/record/484118Test