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1. T Cell Escape in Subjects with Acute HIV-1 Infection

Author

Liu, MK, Ferrari, G, Salazar, J, Keele, B, Tanner, RL, Turnbull, E, Mlotshwa, M, Treurnicht, F, Hahn, B, Korber, BT, De Boer, C, Williams, A, Gray, C, Williamson, C, Cohen, M, Borrow, P, Weinhold, K, Shaw, G, Goonetilleke, N, Mcmichael, AJ, and Re, CBUNCD

Published
2016

3. Identification of sites within gp41 that serve as targets for antibody-dependent cellular cytotoxicity by using human monoclonal antibodies

Author

Tyler, D. S., Stanley, S. D., Susan Zolla-Pazner`, Gorny, M. K., Shadduck, P. P., Langlois, A. J., Matthews, T. J., Bolognesi, D. P., Palker, T. J., and Weinhold, K. J.

Subjects
Immunology, Immunology and Allergy
Abstract

In an effort to determine the functional activity of anti-HIV-1 human mAb and to define the epitopes against which they are directed, supernatants from 10 EBV-transformed lymphoblastoid cell lines producing mAb to HIV were tested. Five clones producing mAb to gp41 and five producing mAb to p24 were identified. The anti-HIV-1 human mAb were tested in neutralization and cell fusion assays in the form of cell culture supernatants at concentrations ranging from 1.7 to 22.0 micrograms/ml. None of the human mAb were found either to inhibit HIV-1-(IIIB or RF) associated cell fusion or to neutralize HIV-1 (IIIB) infection of AA5 cells. All human mAb were additionally tested in 6 h 51Cr release assays for their ability to direct HIV-1 specific antibody-dependent cellular cytotoxicity (ADCC). For ADCC assays, PBMC were isolated from healthy seronegative donors and used as effector cells. HIV-1 infected (IIIB, RF, and MN) CEM.NKR cells as well as CEM.NKR cells with purified gp120 adsorbed onto their surface served as targets. None of the anti-p24 mAb mediated ADCC. In contrast, three of the anti-gp41 mAb were able to direct a significant level of ADCC against each of the infected targets, but as expected, failed to lyse gp120 adsorbed cells. To define the specific epitopes against which the anti-gp41 mAb were directed, seven small peptides homologous to regions within the extracellular domain of gp41 were synthesized. Using RIA, two of the mAb could be mapped. The most effective ADCC-directing human mAb bound to a peptide comprising amino acids 644-663, whereas the least effective ADCC directing anti-gp41 human mAb bound to a region within the immunodominant portion of gp41 outlined by amino acids 579-604. Together, these results for the first time assign a functional activity to human mAb directed at specific regions within gp41 by demonstrating that areas within this molecule can serve as targets for ADCC.

Published
1990
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5. Puesta en marcha de una nueva estación de monitoreo climático en los andes centrales de Bolivia: la estación Gaw/Chacaltaya

Author

Andrade, M., Zaratti, F., Forno, R., Gutiérrez, R., Moreno, I., Velarde, F., Ávila, F., Roca, M., Sánchez, M. F., Laj, P., Jaffrezo, J. L., Ginot, P., Sellegri, K., Ramonet, M., Laurent, O., Weinhold, K., Wiedensohler, A., Radovan Krejci, Bonasoni, P., Cristofanelli, P., Whiteman, D., Vimeux, F., Dommergue, A., Magand, O., ICOS-RAMCES (ICOS-RAMCES), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-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)-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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Glaces et Continents, Climats et Isotopes Stables (GLACCIOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

7. Alterations in antibody-dependent cellular cytotoxicity during the course of HIV-1 infection. Humoral and cellular defects

Author

Tyler, D. S., Stanley, S. D., Nastala, C. A., Austin, A. A., Bartlett, J. A., Stine, K. C., Herbert Lyerly, Bolognesi, D. P., and Weinhold, K. J.

Subjects
Immunology, Immunology and Allergy
Abstract

HIV-1-specific cell-mediated cytotoxicity (CMC) is a form of antibody-dependent cellular cytotoxicity (ADCC) in which HIV-1-specific antibodies arm NK cells directly to become cytotoxic for targets bearing HIV-1 antigenic determinants. This non-MHC-restricted cytotoxic activity is present in early stages of disease and declines markedly with disease progression. To understand the cellular and humoral factors contributing to the reduction in this activity, the conditions under which maximal arming of cells occurs was examined in vitro. With the use of a large patient cohort, a strong positive correlation was found between the capacity of a serum to direct lysis in standard ADCC assays and its ability to arm NK cells. Patients with minimal HIV-1-specific ADCC-directing antibodies exhibited low levels of CMC and were unable to arm normal effector cells in vitro. The lack of sufficient ADCC-directing antibodies was found to be one cause of defective CMC in some patients. Unlike asymptomatics, only a weak positive correlation was found between arming and ADCC with sera from AIDS patients, indicating that a factor other than absolute HIV-1 specific antibody titer was responsible for decreased CMC in this patient population. Another group of patients was found to have diminished CMC despite the presence of antibodies in the serum that were fully capable of arming normal effector cells to become cytotoxic for gp120-expressing targets. When compared with those of normal individuals, lymphocytes from seropositive patients mediated significantly reduced levels of cytotoxicity in ADCC and arming assays with the use of a high titered HIV-1-specific serum. In both assay systems, the magnitude and frequency of dysfunction in antibody-dependent cytolysis was found to be greater among AIDS patients than among asymptomatic individuals. The demonstration of both cellular and humoral defects in the ability of seropositive individuals to manifest ADCC reactivities strongly suggests that HIV-1 infection may significantly compromise the effectiveness of this potentially important cytolytic reactivity in vivo.

9. MAGE-1-specific precursor cytotoxic T-lymphocytes present among tumor-infiltrating lymphocytes from a patient with breast cancer: characterization and antigen-specific activation

Author

Toso, J. F., Oei, C., Oshidari, F., Tartaglia, J., Paoletti, E., Herbert Lyerly, Talib, S., and Weinhold, K. J.

Subjects
Antigen Presentation, Base Sequence, Carcinoma, Molecular Sequence Data, Gene Transfer Techniques, Breast Neoplasms, Middle Aged, Lymphocyte Activation, Immunotherapy, Adoptive, Neoplasm Proteins, Lymphocytes, Tumor-Infiltrating, Antigens, Neoplasm, Humans, Female, Amino Acid Sequence, Melanoma-Specific Antigens, T-Lymphocytes, Cytotoxic
Abstract

A potential target for development of tumor-specific immunotherapeutic strategies is the MAGE-1 gene. We have utilized a recently developed recombinant canarypox (ALVAC) virus vector containing the MAGE-1 gene (vCP235) to activate CTLs from a breast cancer patient bearing a MAGE-1+ tumor. Tumor-infiltrating lymphocytes (TILs) obtained from the tumor of a patient were stimulated in vitro with irradiated autologous peripheral blood mononuclear cells acutely infected with the vCP235 construct. These TILs preferentially expanded approximately 6-fold over a 16-day culture period and specifically recognized an allogeneic transformed B-cell line acutely infected with a vaccinia-MAGE-1 recombinant targeting vector (vP1188) in the context of HLA-A2 and/or B7. TCR V beta analysis of in vitro expanded T cells by a quantitative multiprobe RNase protection assay revealed preferential expansion of TCR V beta 6.3 and V beta 6.4. In addition, homologous T-cell receptor beta CDR3 joining sequences were found in the in vitro stimulated cultures. These results suggest that tumor antigen-specific, MHC-restricted CTLs may be derived from precursor CTLs present in TILs obtained from patients with MAGE-1+ tumors by in vitro stimulation with recombinant avipox MAGE-1 virus-infected autologous cells. Collectively, these findings provide a rationale for tumor-associated antigen-based immunization as a means of activating precursor CTLs residing in patients with tumors expressing defined tumor-associated antigens such as MAGE-1.

10. A global analysis of climate-relevant aerosol properties retrieved from the network of Global Atmosphere Watch (GAW) near-surface observatories

Author

P. Laj, A. Bigi, C. Rose, E. Andrews, C. Lund Myhre, M. Collaud Coen, Y. Lin, A. Wiedensohler, M. Schulz, J. A. Ogren, M. Fiebig, J. Gliß, A. Mortier, M. Pandolfi, T. Petäja, S.-W. Kim, W. Aas, J.-P. Putaud, O. Mayol-Bracero, M. Keywood, L. Labrador, P. Aalto, E. Ahlberg, L. Alados Arboledas, A. Alastuey, M. Andrade, B. Artíñano, S. Ausmeel, T. Arsov, E. Asmi, J. Backman, U. Baltensperger, S. Bastian, O. Bath, J. P. Beukes, B. T. Brem, N. Bukowiecki, S. Conil, C. Couret, D. Day, W. Dayantolis, A. Degorska, K. Eleftheriadis, P. Fetfatzis, O. Favez, H. Flentje, M. I. Gini, A. Gregorič, M. Gysel-Beer, A. G. Hallar, J. Hand, A. Hoffer, C. Hueglin, R. K. Hooda, A. Hyvärinen, I. Kalapov, N. Kalivitis, A. Kasper-Giebl, J. E. Kim, G. Kouvarakis, I. Kranjc, R. Krejci, M. Kulmala, C. Labuschagne, H.-J. Lee, H. Lihavainen, N.-H. Lin, G. Löschau, K. Luoma, A. Marinoni, S. Martins Dos Santos, F. Meinhardt, M. Merkel, J.-M. Metzger, N. Mihalopoulos, N. A. Nguyen, J. Ondracek, N. Pérez, M. R. Perrone, J.-E. Petit, D. Picard, J.-M. Pichon, V. Pont, N. Prats, A. Prenni, F. Reisen, S. Romano, K. Sellegri, S. Sharma, G. Schauer, P. Sheridan, J. P. Sherman, M. Schütze, A. Schwerin, R. Sohmer, M. Sorribas, M. Steinbacher, J. Sun, G. Titos, B. Toczko, T. Tuch, P. Tulet, P. Tunved, V. Vakkari, F. Velarde, P. Velasquez, P. Villani, S. Vratolis, S.-H. Wang, K. Weinhold, R. Weller, M. Yela, J. Yus-Diez, V. Zdimal, P. Zieger, N. Zikova, INAR Physics, Institute for Atmospheric and Earth System Research (INAR), 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), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Helsingin yliopisto = Helsingfors universitet = University of Helsinki, Università degli Studi di Modena e Reggio Emilia = University of Modena and Reggio Emilia (UNIMORE), 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), Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado [Boulder]-National Oceanic and Atmospheric Administration (NOAA), NOAA Earth System Research Laboratory (ESRL), National Oceanic and Atmospheric Administration (NOAA), Norwegian Institute for Air Research (NILU), Federal Office of Meteorology and Climatology MeteoSwiss, Leibniz Institute for Tropospheric Research (TROPOS), Norwegian Meteorological Institute [Oslo] (MET), Institute of Environmental Assessment and Water Research (IDAEA), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), School of Earth and Environmental Sciences [Seoul] (SEES), Seoul National University [Seoul] (SNU), JRC Institute for Environment and Sustainability (IES), European Commission - Joint Research Centre [Ispra] (JRC), Universidad Mayor de San Andrés (UMSA), Centro de Investigaciones Energéticas Medioambientales y Tecnológicas [Madrid] (CIEMAT), Finnish Meteorological Institute (FMI), Paul Scherrer Institute (PSI), Laboratory of Atmospheric Chemistry [Paul Scherrer Institute] (LAC), Agence Nationale pour la Gestion des Déchets Radioactifs (ANDRA), Iinstitute of Environmental Protection - National Research Institute (IOS-PIB), Environmental Radioactivity laboratory (ERL), Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety (INRASTES), National Center for Scientific Research 'Demokritos' (NCSR)-National Center for Scientific Research 'Demokritos' (NCSR), National Centre for Scientific Research Demokritos, Institut National de l'Environnement Industriel et des Risques (INERIS), Deutscher Wetterdienst [Offenbach] (DWD), Department of Computer Science and Engineering [Minneapolis], University of Minnesota [Twin Cities] (UMN), University of Minnesota System-University of Minnesota System, Swiss Federal Laboratories for Materials Science and Technology [Dübendorf] (EMPA), Arctic Space Centre [Helsinki], Bulgarian Academy of Sciences (BAS), University of Crete [Heraklion] (UOC), Institute for Chemical Technologies and Analytics, Vienna University of Technology (TU Wien), Environmental Chemical Processes Laboratory [Heraklion] (ECPL), Department of Chemistry [Heraklion], University of Crete [Heraklion] (UOC)-University of Crete [Heraklion] (UOC), Department of Environmental Science and Analytical Chemistry [Stockholm] (ACES), Stockholm University, South African Weather Service (SAWS), Department of Medicine [New York], Icahn School of Medicine at Mount Sinai [New York] (MSSM), Observatoire des Sciences de l'Univers de La Réunion (OSU-Réunion), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR), Institute for Environmental Research and Sustainable Development (IERSD), National Observatory of Athens (NOA), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Chimie Atmosphérique Expérimentale (CAE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), 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), NERC National Centre for Earth Observation (NCEO), Natural Environment Research Council (NERC), 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, Institute for Applied Environmental Research [Stockholm], Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), Instituto Nacional de Técnica Aeroespacial (INTA), European Project: 654109,H2020,H2020-INFRAIA-2014-2015,ACTRIS-2(2015), 10092390 - Beukes, Johan Paul, European Commission, Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), CNR - National Research Council of Italy, University of Helsinki, Università degli Studi di Modena e Reggio Emilia, Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-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)-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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Météo France, Laj, P., Bigi, A., Rose, C., Andrews, E., Lund Myhre, C., Collaud Coen, M., Lin, Y., Wiedensohler, A., Schulz, M., A. Ogren, J., Fiebig, M., Gliss, J., Mortier, A., Pandolfi, M., Petaja, T., Kim, S. -W., Aas, W., Putaud, J. -P., Mayol-Bracero, O., Keywood, M., Labrador, L., Aalto, P., Ahlberg, E., Alados Arboledas, L., Alastuey, A., Andrade, M., Artinano, B., Ausmeel, S., Arsov, T., Asmi, E., Backman, J., Baltensperger, U., Bastian, S., Bath, O., Paul Beukes, J., T. Brem, B., Bukowiecki, N., Conil, S., Couret, C., Day, D., Dayantolis, W., Degorska, A., Eleftheriadis, K., Fetfatzis, P., Favez, O., Flentje, H., I. Gini, M., Gregoric, A., Gysel-Beer, M., Gannet Hallar, A., Hand, J., Hoffer, A., Hueglin, C., K. Hooda, R., Hyvarinen, A., Kalapov, I., Kalivitis, N., Kasper-Giebl, A., Eun Kim, J., Kouvarakis, G., Kranjc, I., Krejci, R., Kulmala, M., Labuschagne, C., Lee, H. -J., Lihavainen, H., Lin, N. -H., Loschau, G., Luoma, K., Marinoni, A., Martins Dos Santos, S., Meinhardt, F., Merkel, M., Metzger, J. -M., Mihalopoulos, N., Anh Nguyen, N., Ondracek, J., Perez, N., Rita Perrone, M., Pichon, J. -M., Picard, D., Pont, V., Prats, N., Prenni, A., Reisen, F., Romano, S., Sellegri, K., Sharma, S., Schauer, G., Sheridan, P., Patrick Sherman, J., Schutze, M., Schwerin, A., Sohmer, R., Sorribas, M., Steinbacher, M., Sun, J., Titos, G., Toczko, B., Tuch, T., Tulet, P., Tunved, P., Vakkari, V., Velarde, F., Velasquez, P., Villani, P., Vratolis, S., Wang, S. -H., Weinhold, K., Weller, R., Yela, M., Yus-Diez, J., Zdimal, V., Zieger, P., and Zikova, N.

Subjects
Earth's energy budget, 1171 Geosciences, Atmospheric Science, Eearth radiation balance, PARTICLE NUMBER, 010504 meteorology & atmospheric sciences, Particle number, Meteorology, VISIBLE-LIGHT ABSORPTION, 010501 environmental sciences, 01 natural sciences, Atmosphere, PARTICULATE MATTER, Solar radiation, Cloud condensation nuclei, lcsh:TA170-171, ORGANIC AEROSOL, Physics::Atmospheric and Oceanic Physics, 0105 earth and related environmental sciences, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], SIZE DISTRIBUTIONS, lcsh:TA715-787, Global Atmosphere Watch, REGIONAL BACKGROUND SITES, lcsh:Earthwork. Foundations, Aerosol particles, OPTICAL-PROPERTIES, Albedo, Particulates, RADIATIVE PROPERTIES, Aerosol, lcsh:Environmental engineering, 13. Climate action, Greenhouse gas, FILTER-BASED MEASUREMENTS, BLACK CARBON, Environmental science, Trollobservatoriet, Global Climate Monitoring System
Abstract

Aerosol particles are essential constituents of the Earth’s atmosphere, impacting the earth radiation balance directly by scattering and absorbing solar radiation, and indirectly by acting as cloud condensation nuclei. In contrast to most greenhouse gases, aerosol particles have short atmospheric residence times, resulting in a highly heterogeneous distribution in space and time. There is a clear need to document this variability at regional scale through observations involving, in particular, the in situ near-surface segment of the atmospheric observation system. This paper will provide the widest effort so far to document variability of climate-relevant in situ aerosol properties (namely wavelength dependent particle light scattering and absorption coefficients, particle number concentration and particle number size distribution) from all sites connected to the Global Atmosphere Watch network. High-quality data from almost 90 stations worldwide have been collected and controlled for quality and are reported for a reference year in 2017, providing a very extended and robust view of the variability of these variables worldwide. The range of variability observed worldwide for light scattering and absorption coefficients, single-scattering albedo, and particle number concentration are presented together with preliminary information on their long-term trends and comparison with model simulation for the different stations. The scope of the present paper is also to provide the necessary suite of information, including data provision procedures, quality control and analysis, data policy, and usage of the ground-based aerosol measurement network. It delivers to users of the World Data Centre on Aerosol, the required confidence in data products in the form of a fully characterized value chain, including uncertainty estimation and requirements for contributing to the global climate monitoring system., European Commission Joint Research Centre 654109, European ERDF funds through different Spanish R&D projects of the Spanish Ministerio de Economia, Industria y Competitividad, NorthWest University, University of Helsinki, Academy of Finland 272041, Academy of Finland project Greenhouse gas 269095 296302, Korea Meteorological Administration Research and Development Program "Development of Monitoring and Analysis Techniques for Atmospheric Composition in Korea KMA2018-00522, National Research Foundation of Korea 2017R1D1A1B06032548, Korea Meteorological Administration Research and Development Program KMI2018-01111, Taiwan Environmental Protection Administration, Ministry of Research, France, French Ministry of the Environment, United States Environmental Protection Agency, MeteoSwiss (GAW-CH aerosol monitoring programme), Swiss State Secretariat for Education, Research and Innovation (SERI), Ministry of Education, Youth and Sports of CR within National Sustainability Program I (NPU I) LO1415, ERDF "ACTRISCZ RI" CZ.02.1.01/0.0/0.0/16_013/0001315 CGL2017-85344-R MINECO/AEI/FEDER, TIGAS-CM (Madrid Regional Government) Y2018/EMT-5177, AIRTECCM (Madrid Regional Government) P2018/EMT4329 REDMAAS2020 RED2018-102594-T CIENCIA, Spanish Ministry of Economy, Industry and Competitiveness, European Union (EU) CGL2016-78594-R, Generalitat de Catalunya AGAUR 2017 SGR41, National Institute for Aerospace Technology, Ministerio Espanol de Economia, Industria y Competitividad (MINECO) MIS 5021516, Competitiveness, Entrepreneurship and Innovation, NSRF, Ministry of Education, Universities and Research (MIUR), Norwegian Environment Agency, Swedish FORMAS; Swedish Research Council (VR), Magnus Bergvall foundation, Marta och Erik Holmberg foundation, Swedish EPA

Published
2020
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