Blar i NILU Brage på forfatter "Petäjä, Tuukka"
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A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites
Pandolfi, Marco; Alados-Arboledas, Lucas; Alastuey, Andrés; Andrade, Marcos; Angelov, Christo; Artiñano, Begoña; Backman, John; Baltensperger, Urs; Bonasoni, Paolo; Bukowiecki, Nicolas; Coen, Martine Collaud; Conil, Sébastien; Coz, Esther; Crenn, Vincent; Dudoitis, Vadimas; Ealo, Marina; Eleftheriadis, Kostas; Favez, Olivier; Fetfatzis, Prodromos; Fiebig, Markus; Flentje, Harald; Ginot, Patrick; Gysel, Martin; Henzing, Bas; Hoffer, András; Smejkalova, Adela Holubova; Kalapov, Ivo; Kalivitis, Nikos; Kouvarakis, Giorgos; Kristensson, Adam; Kulmala, Markku; Lihavainen, Heikki; Lunder, Chris Rene; Luoma, Krista; Lyamani, Hassan; Marinoni, Angela; Mihalopoulos, Nikos; Moerman, Marcel; Nicolas, José; O'Dowd, Colin; Petäjä, Tuukka; Petit, Jean Eudes; Pichon, Jean-Marc; Prokopciuk, Nina; Putaud, Jean-Philippe; Rodriguez, Sergio; Sciare, Jean; Sellegri, Karine; Swietlicki, Erik; Titos, Gloria; Tuch, Thomas; Tunved, Peter; Ulevičius, Vidmantas; Vaishya, Aditya; Vána, Milan; Virkkula, Aki; Vratolis, Stergios; Weingartner, Ernest; Wiedensohler, Alfred; Laj, Paolo (Journal article; Peer reviewed, 2018)This paper presents the light-scattering properties of atmospheric aerosol particles measured over the past decade at 28 ACTRIS observatories, which are located mainly in Europe. The data include particle light scattering ... -
Aerosol optical properties calculated from size distributions, filter samples and absorption photometer data at Dome C, Antarctica, and their relationships with seasonal cycles of sources
Virkkula, Aki; Grythe, Henrik; Backman, John; Petäjä, Tuukka; Busetto, Maurizio; Lanconelli, Christian; Lupi, Angelo; Becagli, Silvia; Traversi, Rita; Severi, Mirko; Vitale, Vito; Sheridan, Patrick; Andrews, Elisabeth (Peer reviewed; Journal article, 2022)Optical properties of surface aerosols at Dome C, Antarctica, in 2007–2013 and their potential source areas are presented. Scattering coefficients (σsp) were calculated from measured particle number size distributions with ... -
Arctic air pollution: Challenges and opportunities for the next decade
Arnold, Steve R.; Law, Kathy S.; Brock, Charles A.; Thomas, Jennie L.; Starkweather, Sandra M.; von Salzen, Knut; Stohl, Andreas; Sharma, Sangeeta; Lund, Marianne Tronstad; Flanner, Mark G.; Petäjä, Tuukka; Tanimoto, Hiroshi; Gamble, Jim; Dibb, Jack E.; Melamed, Megan; Johnson, Noor; Fidel, Maryann; Tynkkynen, Veli-Pekka; Baklanov, Alexander; Eckhardt, Sabine; Monks, Sarah A.; Browse, Jo; Bozem, Heike (Journal article; Peer reviewed, 2016) -
Comparison of particle number size distribution trends in ground measurements and climate models
Leinonen, Ville; Kokkola, Harri; Yli-Juuti, Taina; Mielonen, Tero; Kühn, Thomas; Nieminen, Tuomo; Heikkinen, Simo; Miinalainen, Tuuli; Bergman, Tommi; Carslaw, Ken; Decesari, Stefano; Fiebig, Markus; Hussein, Tareq; Kivekäs, Niku; Krejci, Radovan; Kulmala, Markku; Leskinen, Ari; Massling, Andreas; Mihalopoulos, Nikos; Mulcahy, Jane P.; Noe, Steffen M.; Van Noije, Twan; O'connor, Fiona M.; O'dowd, Colin; Oliviè, Dirk Jan Leo; Pernov, Jakob B.; Petäjä, Tuukka; Seland, Øyvind; Schulz, Michael; Scott, Catherine E.; Skov, Henrik; Swietlicki, Erik; Tuch, Thomas; Wiedensohler, Alfred; Virtanen, Annele; Mikkonen, Santtu (Peer reviewed; Journal article, 2022)Despite a large number of studies, out of all drivers of radiative forcing, the effect of aerosols has the largest uncertainty in global climate model radiative forcing estimates. There have been studies of aerosol optical ... -
Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surface
Moschos, Vaios; Schmale, Julia; Aas, Wenche; Becagli, Silvia; Calzolai, Giulia; Eleftheriadis, Konstantinos; Moffett, Claire E.; Schnelle-Kreis, Jürgen; Severi, Mirko; Sharma, Sangeeta; Skov, Henrik; Vestenius, Mika; Zhang, Wendy; Hakola, Hannele; Hellén, Heidi; Huang, Lin; Jaffrezo, Jean-Luc; Massling, Andreas; Nøjgaard, Jacob Klenø; Petäjä, Tuukka; Popovicheva, Olga; Sheesley, Rebecca J.; Traversi, Rita; Yttri, Karl Espen; Prévôt, André S. H.; Baltensperger, Urs; El Haddad, Imad (Peer reviewed; Journal article, 2022)The Arctic is warming two to three times faster than the global average, and the role of aerosols is not well constrained. Aerosol number concentrations can be very low in remote environments, rendering local cloud radiative ... -
Equal abundance of summertime natural and wintertime anthropogenic Arctic organic aerosols
Moschos, Vaios; Dzepina, Katja; Bhattu, Deepika; Lamkaddam, Houssni; Casotto, Roberto; Daellenbach, Kaspar R.; Canonaco, Francesco; Rai, Pragati; Aas, Wenche; Becagli, Silvia; Calzolai, Giulia; Eleftheriadis, Konstantinos; Moffett, Claire E.; Schnelle-Kreis, Jürgen; Seviri, Mirko; Sharma, Sangeeta; Skov, Henrik; Vestenius, Mika; Zhang, Wendy; Hakola, Hannele; Hellén, Heidi; Huang, Lin; Jaffrezo, Jean-Luc; Massling, Andreas; Nøjgaard, Jacob Klenø; Petäjä, Tuukka; Popovicheva, Olga; Sheesley, Rebecca J.; Traversi, Rita; Yttri, Karl Espen; Schmale, Julia; Prévôt, André S. H.; Baltensperger, Urs; El Haddad, Imad (Peer reviewed; Journal article, 2022)Aerosols play an important yet uncertain role in modulating the radiation balance of the sensitive Arctic atmosphere. Organic aerosol is one of the most abundant, yet least understood, fractions of the Arctic aerosol mass. ... -
Estimates of global dew collection potential on artificial surfaces
Vuollekoski, Henri; Vogt, Matthias; Sinclair, Victoria Anne; Duplissy, Jonathan; Järvinen, Heikki; Kyrö, Ella-Maria; Makkonen, Risto; Petäjä, Tuukka; Prisle, Nonne L.; Räisänen, Petri; Sipilä, Mikko; Ylhäisi, Jussi Samuli; Kulmala, Markku (Journal article; Peer reviewed, 2015) -
A global analysis of climate-relevant aerosol properties retrieved from the network of Global Atmosphere Watch (GAW) near-surface observatories
Laj, Paolo; Bigi, Alessandro; Rose, Clemence; Andrews, Elisabeth; Myhre, Cathrine Lund; Coen, Martine Collaud; Lin, Yong; Wiedensohler, Alfred; Schulz, Michael; Ogren, John A.; Fiebig, Markus; Gliss, Jonas; Mortier, Augustin; Pandolfi, Marco; Petäjä, Tuukka; Kim, Sang-Woo; Aas, Wenche; Putaud, Jean-Philippe; Mayol-Bracero, Olga; Keywood, Melita; Labrador, Lorenzo; Aalto, Pasi; Ahlberg, Erik; Arboledas, Lucas Alados; Alastuey, Andrés; Andrade, Marcos; Artiñano, Begoña; Ausmeel, Stina; Arsov, Todor; Asmi, Eija; Backman, John; Baltensperger, Urs; Bastian, Susanne; Bath, Olaf; Beukes, Johan Paul; Brem, Benjamin T.; Bukowiecki, Nicolas; Conil, Sébastien; Couret, Cedric; Day, Derek; Dayantolis, Wan; Degorska, Anna; Eleftheriadis, Konstantinos; Fetfatzis, Prodromos; Favez, Olivier; Flentje, Harald; Gini, Maria I.; Gregorič, Asta; Gysel-Beer, Martin; Hallar, A. Gannet; Hand, Jenny; Hoffer, András; Hueglin, Christoph; Hooda, Rakesh K.; Hyvärinen, Antti; Kalapov, Ivo; Kalivitis, Nikos; Kasper-Giebl, Anne; Kim, Jeong Eun; Kouvarakis, Giorgos; Kranjc, Irena; Krejci, Radovan; Kulmala, Markku; Labuschagne, Casper; Lee, Hae-Jung; Lihavainen, Heikki; Lin, Neng-Huei; Löschau, Gunter; Luoma, Krista; Marinoni, Angela; Dos Santos, Sebastiao Martins; Meinhardt, Frank; Merkel, Maik; Metzger, Jean-Marc; Mihalopoulos, Nikolaos; Nguyen, Nhat Anh; Ondráček, Jakub; Pérez, Noemi; Perrone, Maria Rita; Petit, Jean-Eudes; Picard, David; Pichon, Jean-Marc; Pont, Veronique; Prats, Natalia; Prenni, Anthony; Reisen, Fabienne; Romano, Salvatore; Sellegri, Karine; Sharma, Sangeeta; Schauer, Gerhard; Sheridan, Patrick; Sherman, James Patrick; Schütze, Maik; Schwerin, Andreas; Sohmer, Ralf; Sorribas, Mar; Steinbacher, Martin; Sun, Junying; Titos, Gloria; Toczko, Barbara; Tuch, Thomas; Tulet, Pierre; Tunved, Peter; Vakkari, Ville; Velarde, Fernando; Velasquez, Patricio; Villani, Paolo; Vratolis, Sterios; Wang, Sheng-Hsiang; Weinhold, Kay; Weller, Rolf; Yela, Margarita; Yus-Diez, Jesus; Ždímal, Vladimir; Zieger, Paul; Ziková, Naděžda (Peer reviewed; Journal article, 2020)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 ... -
Impact of 2020 COVID-19 lockdowns on particulate air pollution across Europe
Putaud, Jean-Philippe; Pisoni, Enrico; Mangold, Alexander; Hueglin, Christoph; Sciare, Jean; Pikridas, Michael; Savvides, Chrysantos; Ondráček, Jakub; Mbengue, Saliou; Wiedensohler, Alfred; Weinhold, Kay; Merkel, Maik; Poulain, Laurent; van Pinxteren, Dominik; Herrmann, Hartmut; Massling, Andreas; Nordstroem, Claus; Alastuey, Andres; Reche, Cristina; Perez, Noemi; Castillo, Sonia; Sorribas, Mar; Adame, Jose A.; Petäjä, Tuukka; Lehtipalo, Katrianne; Niemi, Jarkko; Riffault, Véronique; De Brito, Joel F.; Colette, Augustin; Favez, Olivier; Petit, Jean-Eudes; Gros, Valérie; Gini, Maria; Vratolis, Stergios; Eleftheriadis, Konstantinos; Diapouli, Evangelia; van der Gon, Hugo Denier; Yttri, Karl Espen; Aas, Wenche (Peer reviewed; Journal article, 2023)To fight against the first wave of coronavirus disease 2019 (COVID-19) in 2020, lockdown measures were implemented in most European countries. These lockdowns had well-documented effects on human mobility. We assessed the ... -
Mercury isotope evidence for Arctic summertime re-emission of mercury from the cryosphere
Araujo, Beatriz Ferreira; Osterwalder, Stefan; Szponar, Natalie; Lee, Domenica; Petrova, Mariia V.; Pernov, Jakob Boyd; Ahmed, Shaddy; Heimbürger-Boavida, Lars-Eric; Laffont, Laure; Teisserenc, Roman; Tananaev, Nikita; Nordstrom, Claus; Magand, Olivier; Stupple, Geoff; Skov, Henrik; Steffen, Alexandra; Bergquist, Bridget; Pfaffhuber, Katrine Aspmo; Thomas, Jennie L.; Scheper, Simon; Petäjä, Tuukka; Dommergue, Aurélien; Sonke, Jeroen E. (Peer reviewed; Journal article, 2022)During Arctic springtime, halogen radicals oxidize atmospheric elemental mercury (Hg0), which deposits to the cryosphere. This is followed by a summertime atmospheric Hg0 peak that is thought to result mostly from terrestrial ... -
Modelling the dispersion of particle numbers in five European cities
Kukkonen, Jaakko; Karl, Matthias; Keuken, Menno P.; Denier van der Gon, Hugo A.C.; Denby, Bruce; Singh, Vikas; Douros, Ioannis; Manders, Astrid A.; Samaras, Zissis; Moussiopoulos, Nicolas; Jonkers, Sander; Aarnio, Mia A.; Karppinen, Ari; Kangas, Leena; Lützenkirchen, Susanne; Petäjä, Tuukka; Vouitsis, Ilias; Sokhi, Ranjeet S. (Journal article; Peer reviewed, 2016) -
Recommendations for reporting equivalent black carbon (eBC) mass concentrations based on long-term pan-European in-situ observations
Savadkoohi, Marjan; Pandolfi, Marco; Favez, Olivier; Putaud, Jean-Philippe; Eleftheriadis, Konstantinos; Fiebig, Markus; Hopke, Philip K.; Laj, Paolo G.; Wiedensohler, Alfred; Alados-Arboledas, Lucas; Bastian, Susanne; Chazeau, Benjamin; Maria, Alvaro Clemente; Colombi, Cristina; Costabile, Francesca; Green, David C.; Hueglin, Christoph; Liakakou, Eleni; Luoma, Krista; Listrani, Stefano; Mihalopoulos, Nikos; Marchand, Nicolas; Močnik, Griša; Niemi, Jarkko V; Ondráček, Jakub; Petit, Jean Eudes; Rattigan, Oliver V.; Reche, Cristina; Timonen, Hilkka; Titos, Gloria; Tremper, Anja H.; Vratolis, Stergios; Vodicka, Petr; Funes, Eduardo Yubero; Zíková, Naděžda; Harrison, Roy M.; Petäjä, Tuukka; Alastuey, Andrés; Querol, Xavier (Peer reviewed; Journal article, 2024)A reliable determination of equivalent black carbon (eBC) mass concentrations derived from filter absorption photometers (FAPs) measurements depends on the appropriate quantification of the mass absorption cross-section ... -
Seasonality of the particle number concentration and size distribution: a global analysis retrieved from the network of Global Atmosphere Watch (GAW) near-surface observatories
Rose, Clemence; Coen, Martine Collaud; Andrews, Elisabeth; Lin, Yong; Bossert, Isaline; Myhre, Cathrine Lund; Tuch, Thomas; Wiedensohler, Alfred; Fiebig, Markus; Aalto, Pasi; Alastuey, Andrés; Alonso-Blanco, Elisabeth; Andrade, Marcos; Artiñano, Begoña; Arsov, Todor; Baltensperger, Urs; Bastian, Susanne; Bath, Olaf; Beukes, Johan Paul; Brem, Benjamin T.; Bukowiecki, Nicolas; Casquero-Vera, Juan Andres; Conil, Sébastien; Eleftheriadis, Konstantinos; Favez, Olivier; Flentje, Harald; Gini, Maria I.; Gómez-Moreno, Francisco Javier; Gysel-Beer, Martin; Hallar, Anna Gannet; Kalapov, Ivo; Kalivitis, Nikos; Kasper-Giebl, Anne; Keywood, Melita; Kim, Jeong Eun; Kim, Sang-Woo; Kristensson, Adam; Kulmala, Markku; Lihavainen, Heikki; Lin, Neng-Huei; Lyamani, Hassan; Marinoni, Angela; Dos Santos, Sebastiao Martins; Mayol-Bracero, Olga; Meinhardt, Frank; Merkel, Maik; Metzger, Jean-Marc; Mihalopoulos, Nikolaos; Ondráček, Jakub; Pandolfi, Marco; Pérez, Noemi; Petäjä, Tuukka; Petit, Jean-Eudes; Picard, David; Pichon, Jean-Marc; Pont, Veronique; Putaud, Jean-Philippe; Reisen, Fabienne; Sellegri, Karine; Sharma, Sangeeta; Schauer, Gerhard; Sheridan, Patrick; Sherman, James Patrick; Schwerin, Andreas; Sohmer, Ralf; Sorribas, Mar; Sun, Junying; Tulet, Pierre; Vakkari, Ville; van Zyl, Pieter Gideon; Velarde, Fernando; Villani, Paolo; Vratolis, Stergios; Wagner, Zdenek; Wang, Sheng-Hsiang; Weinhold, Kay; Weller, Rolf; Yela, Margarita; Ždímal, Vladimir; Laj, Paolo G. (Peer reviewed; Journal article, 2021)Aerosol particles are a complex component of the atmospheric system which influence climate directly by interacting with solar radiation, and indirectly by contributing to cloud formation. The variety of their sources, as ... -
Widespread Pesticide Distribution in the European Atmosphere Questions their Degradability in Air
Mayer, Ludovic; Degrendele, Celine; Senk, Petr; Kohoutek, Jiří; Přibylovác, Petra; Kukučka, Petr; Melymuk, Lisa; Durand, Amandine; Ravier, Sylvain; Alastuey, Andres; Baker, Alex R.; Baltensperger, Urs; Baumann-Stanzer, Kathrin; Biermann, Tobias; Bohlin-Nizzetto, Pernilla; Ceburnis, Darius; Conil, Sébastien; Couret, Cedric; Degorska, Anna; Diapouli, Evangelia; Eckhardt, Sabine; Eleftheriadis, Konstantinos; Forster, Grant L.; Freier, Korbinian; Gheusi, Francois; Gini, Maria; Hellén, Heidi; Henne, Stephan; Hermann, Hartmut; Šmejkalová, Adéla Holubová; Horrak, Urmas; Hüglin, Christoph; Junninen, Heikki; Kristensson, Adam; Langrene, Laurent; Levula, Janne; Lothon, Marie; Ludewig, Elke; Makkonen, Ulla; Matejovičová, Jana; Mihalopoulos, Nikolaos; Mináriková, Veronika; Moche, Wolfgang; Noe, Steffen M.; Perez, Noemi; Petäjä, Tuukka; Pont, Veronique; Poulain, Laurent; Quivet, Etienne; Ratz, Gabriela; Rehm, Till; Reimann, Stefan; Simmons, Ivan; Sonke, Jeroen E.; Sorribas, Mar; Spoor, Ronald; Swart, Daan P.J.; Vasilatou, Vasiliki; Wortham, Henri; Yela, Margarita; Zarmpas, Pavlos; Zellweger-Fäsi, Claudia; Tørseth, Kjetil; Laj, Paolo G.; Klanova, Jana; Lammel, Gerhard (Peer reviewed; Journal article, 2024)Risk assessment of pesticide impacts on remote ecosystems makes use of model-estimated degradation in air. Recent studies suggest these degradation rates to be overestimated, questioning current pesticide regulation. Here, ...