Werner Eugster
Publication Activity (10 Years)
Years Active: 2018-2022
Publications (10 Years): 8
Publications (10 Years): 8
ETH Zürich
Affiliation History
ETH Zürich
Switzerland
Prof. (Titular-Prof. since 2015-04) :: Department of Environmental Systems Science
Publications
- Jonas J Lembrechts, D Johan van den Hoogen, Juha Aalto, Michael B Ashcroft, Pieter De Frenne, Julia Kemppinen, Martin Kopecký, Miska Luoto, Ilya M D Maclean, Thomas W Crowther, Joseph J Bailey, Stef Haesen, David H Klinges, Pekka Niittynen, Brett R Scheffers, Koenraad Van Meerbeek, Peter Aartsma, Otar Abdalaze, Mehdi Abedi, Rien Aerts, Negar Ahmadian, Antje Ahrends, Juha M Alatalo, Jake M Alexander, Camille Nina Allonsius, Jan Altman, Christof Ammann, Christian Andres, Christopher Andrews, Jonas Ardö, Nicola Arriga, Alberto Arzac, Valeria Aschero, Rafael L Assis, Jakob Johann Assmann, Maaike Y Bader, Khadijeh Bahalkeh, Peter Barančok, Isabel C Barrio, Agustina Barros, Matti Barthel, Edmund W Basham, Marijn Bauters, Manuele Bazzichetto, Luca Belelli Marchesini, Michael C Bell, Juan C Benavides, José-Luis Benito-Alonso, Bernd J Berauer, Jarle W Bjerke, Robert G Björk, Mats P Björkman, Katrin Björnsdóttir, Benjamin Wong Blonder, Pascal Boeckx, Julia Boike, Stef Bokhorst, Bárbara N S Brum, Josef Brůna, Nina Buchmann, Pauline Buysse, José Luís Campana Camargo, Otávio Camargo Campoe, Onur Candan, Rafaella Canessa, Nicoletta Cannone, Michele Carbognani, Jofre Carnicer Cols, Angelica Casanova-Katny, Simone Cesarz, Bogdan H Chojnicki, Philippe Choler, Steven L Chown, Edgar F Cifuentes, Marek Čiliak, Tamara Contador Mejias, Peter Convey, Elisabeth J Cooper, Edoardo Cremonese, Salvatore R Curasi, Robin Curtis, Mauirizio Cutini, C Johan Dahlberg, Gergana N Daskalova, Miguel Angel de Pablo, Stefano Della Chiesa, Jürgen Dengler, Bart Deronde, Patrice Descombes, Valter Di Cecco, Michele Di Musciano, Jan Dick, Romina D Dimarco, Jiří Doležal, Ellen Dorrepaal, Jiří Dušek, Héctor J Aguado, Lars Eklundh, Todd E Erickson, Brigitta Erschbamer, Werner Eugster, Robert M Ewers, Dan A Exton, Nicolas Fanin, Fatih Fazlioglu, Iris Feigenwinter, Giuseppe Fenu, Olga Ferlian, M Rosa Fernández Calzado, Eduardo Fernández-Pascual, Manfred Finckh, Rebecca Finger Higgens, T'ai G W Forte, Erika C Freeman, Esther R Frei, Eduardo Fuentes-Lillo, Rafael A García, María Begoña Garcia, Charly Géron, Mana Gharun, Dany Ghosn, Khatuna Gigauri, Anne Gobin, Ignacio Goded, Mathias Göckede, Felix Gottschall, Keith W T Goulding, Sanne Govaert, Bente Jessen Graae, Sarah Greenwood, Caroline Greiser, Achim Grelle, Benoit Guénard, Mauro Guglielmin, Joannès Guillemot, Peter Haase, Sylvia Haider, Aud H Halbritter, Maroof Hamid, Albin Hammerle, Arndt Hampe, Siri Vatsø Haugum, Lucia Hederová, Bernard Heinesch, Carole Helfter, Daniel Hepenstrick, Maximiliane Herberich, Mathias Herbst, Luise Hermanutz, David S Hik, Raúl Hoffrén, Jürgen Homeier, Lukas Hörtnagl, Toke T Thomas Høye, Filip Hrbacek, Kristoffer Hylander, Hiroki Iwata, Marcin Antoni Jackowicz-Korczynski, Hervé Jactel, Järvi Järveoja, Szymon Jastrzębowski, Anke Jentsch, Juan J Jimenez, Ingibjörg Svala Jónsdóttir, Tommaso Jucker, Alistair S Jump, Radosław Juszczak, Róbert Kanka, Vít Kašpar, George Kazakis, Julia Kelly, Anzar Ahmad Khuroo, Leif Klemedtsson, Marcin Klisz, Natascha Kljun, Alexander Knohl, Johannes Kobler, Jozef Kollár, Martyna M Kotowska, Bence Kovács, Juergen Kreyling, Andrea Lamprecht, Simone I Lang, Christian Larson, Keith W Larson, Kamil Laska, Guerric le Maire, Rachel I Leihy, Luc Lens, Bengt Liljebladh, Annalea K Lohila, Juan Lorite, Benjamin Loubet, Joshua Scott Lynn, Martin Macek, Roy Mackenzie, Vincenzo Magliulo, Regine Maier, Francesco Malfasi, František Máliš, Matěj Man, Giovanni Manca, Antonio Manco, Tanguy Manise, Paraskevi Manolaki, Felipe Marciniak, Radim Matula, Ana Clara Mazzolari, Sergiy Medinets, Volodymyr Medinets, Camille Meeussen, Sonia Merinero, Rita de Cássia Guimarães Mesquita, Katrin Meusburger, Filip J R Meysman, Sean T Michaletz, Ann Milbau, Dmitry Moiseev, Pavel A Moiseev, Andrea Mondoni, Ruth Monfries, Leonardo Montagnani, Mikel Moriana-Armendariz, Umberto Morra di Cella, Martin Mörsdorf, Jonathan R Mosedale, Lena Muffler, Miriam Muñoz-Rojas, Jonathan A Myers, Isla H Myers-Smith, Laszlo Nagy, Marianna Nardino, Ilona Naujokaitis-Lewis, Emily Newling, Lena Nicklas, Georg Niedrist, Armin Niessner, Mats B Nilsson, Signe Normand, Marcelo D Nosetto, Yann Nouvellon, Martin A Nuñez, Romà Ogaya, Jerome Ogee, Joseph Okello, Janusz Olejnik, Jørgen Eivind Olesen, Øystein H Opedal, Simone Orsenigo, Andrej Palaj, Timo Pampuch, Alexey V Panov, William K Petry, Ada Pastor, Aníbal Pauchard, Harald Pauli, Marian Pavelka, William D Pearse, Matthias Peichl, Loïc Pellissier, Rachel M Penczykowski, Josep Penuelas, Matteo Petit Bon, Alessandro Petraglia, Shyam S Phartyal, Gareth K Phoenix, Casimiro Pio, Andrea Pitacco, Camille Pitteloud, Roman Plichta, Francesco Porro, Miguel Portillo-Estrada, Jérôme Poulenard, Rafael Poyatos, Anatoly S Prokushkin, Radosław Puchałka, Mihai Pușcaș, Dajana Radujković, Krystal L Randall, Amanda Ratier Backes, Sabine Remmele, Wolfram Remmers, David Renault, Anita C Risch, Christian Rixen, Sharon A Robinson, Bjorn J M Robroek, Adrian V Rocha, Christian Rossi, Graziano Rossi, Olivier Roupsard, Alexey V Rubtsov, Patrick Saccone, Clotilde Sagot, Jhonatan Sallo-Bravo, Cinthya Chiva Dos Santos, Judith M Sarneel, Tobias Scharnweber, Jonas Schmeddes, Marius Schmidt, Thomas Scholten, Max A Schuchardt, Naomi Schwartz, Tony Scott, Julia Seeber, Ana Cristina Segalin de Andrade, Tim F Seipel, Philipp Semenchuk, Rebecca A Senior, Josep M Serra-Diaz, Piotr Sewerniak, Ankit Shekhar, Nikita V Sidenko, Lukas Siebicke, Laura Siegwart Collier, Elizabeth G Simpson, David P Siqueira, Zuzana Sitková, Johan Six, Marko Smiljanic, Stuart W Smith, Sarah Smith-Tripp, Ben Somers, Mia Vedel Sørensen, José João Lelis Leal de Souza, Bartolomeu Israel Souza, Arildo S Dias, Marko J Spasojevic, James D M Speed, Fabien Spicher, Angela Stanisci, Klaus Steinbauer, Rainer Steinbrecher, Michael Steinwandter, Michael Stemkovski, Jörg G Stephan, Christian Stiegler, Stefan Stoll, Martin Svátek, Miroslav Svoboda, Torbern Tagesson, Andrew J Tanentzap, Franziska Tanneberger, Theurillat Jean-Paul, Haydn J D Thomas, Andrew D Thomas, Katja Tielbörger, Marcello Tomaselli, Urs Albert Treier, Mario Trouillier, Pavel Dan Turtureanu, Rosamond Tutton, Vilna A Tyystjärvi, Masahito Ueyama, Karol Ujházy, Mariana Ujházyová, Domas Uogintas, Anastasiya V Urban, Josef Urban, Marek Urbaniak, Tudor-Mihai Ursu, Francesco Primo Vaccari, Stijn Van de Vondel, Liesbeth van den Brink, Maarten Van Geel, Vigdis Vandvik, Pieter Vangansbeke, Andrej Varlagin, G F Ciska Veen, Elmar M Veenendaal, Susanna E Venn, Hans Verbeeck, Erik Verbrugggen, Frank G A Verheijen, Luis Villar, Luca Vitale, Pascal Vittoz, Maria Vives-Ingla, Jonathan von Oppen, Josefine Walz, Runxi Wang, Yifeng Wang, Robert G Way, Ronja E M Wedegärtner, Robert Weigel, Jan Wild, Matthew Wilkinson, Martin Wilmking, Lisa Wingate, Manuela Winkler, Sonja Wipf, Georg Wohlfahrt, Georgios Xenakis, Yan Yang, Zicheng Yu, Kailiang Yu, Florian Zellweger, Zhiheng Wang, Zhaochen Zhang, Peng Zhao, Klaudia Ziemblińska, Reiner Zimmermann, Shengwei Zong, Viacheslav I Zyryanov, Ivan Nijs, Jonathan Lenoir
- Gilberto Z Pastorello, Carlo Trotta, Eleonora Canfora, Housen Chu, Danielle S Christianson, You-Wei Cheah, Cristina Poindexter, Jiquen Chen, Abdelrahman Elbashandy, Marty Humphrey, Peter Isaac, Diego Polidori, Markus Reichstein, Alessio Ribeca, Catharine van Ingen, Nicolas Vuichard, Leiming Zhang, Brian Amiro, Christof Ammann, M Altaf Arain, Jonas Ardö, Timothy Arkebauer, Stefan K Arndt, Nicola Arriga, Marc Aubinet, Mika Aurela, Dennis Baldocchi, Alan Barr, Eric R Beamesderfer, Luca Belelli Marchesini, Onil Bergeron, Jason Beringer, Christian Bernhofer, Daniel Berveiller, Dave Billesbach, Thomas Andrew Black, Peter D Blanken, Gil Bohrer, Julia Boike, Paul V Bolstad, Damien Bonal, Jean-Marc Bonnefond, David R Bowling, Rosvel Bracho, Jason J Brodeur, Christian Brümmer, Nina Buchmann, Benoit Burban, Sean P Burns, Pauline Buysse, Peter Cale, Mauro Cavagna, Pierre Cellier, Shiping Chen, Isaac Chini, Torben Røjle Christensen, Jamie R Cleverly, Alessio Collalti, Claudia Consalvo, Bruce D Cook, David Cook, Carole Coursolle, Edoardo Cremonese, Peter S Curtis, Ettore D'Andrea, Humberto da Rocha, Xiaoqin Dai, Kenneth J Davis, Bruno De Cinti, Agnes de Grandcourt, Anne De Ligne, Raimundo Cosme de Oliveira, Nicolas Delpierre, Ankur R Desai, Carlos Marcelo Di Bella, Paul di Tommasi, A Johannes Dolman, Francisco Domingo, Gang Dong, Sabina Dore, Pierpaolo Duce, Eric Dufrêne, Allison Dunn, Jiří Dušek, Derek Eamus, Uwe Eichelmann, Hatim Abdalla M ElKhidir, Werner Eugster, Cacilia M Ewenz, Brent Ewers, Daniela Famulari, Silvano Fares, Iris Feigenwinter, Andrew Feitz, Rasmus Fensholt, Gianluca Filippa, Marc L Fischer, John Frank, Marta Galvagno, Mana Gharun, Damiano Gianelle, Bert Gielen, Beniamino Gioli, Anatoly Gitelson, Ignacio Goded, Mathias Göckede, Allen H Goldstein, Christopher M Gough, Michael L Goulden, Alexander Graf, Anne Griebel, Carsten Gruening, Thomas Grünwald, Albin Hammerle, Shijie Han, Xingguo Han, Birger Ulf Hansen, Chad Hanson, Juha Hatakka, Yongtao He, Markus Hehn, Bernard Heinesch, Nina Hinko-Najera, Lukas Hörtnagl, Lindsay B Hutley, Andreas Ibrom, Hiroki Ikawa, Marcin Jackowicz-Korczynski, Dalibor Janouš, Wilma Jans, Rachhpal Jassal, Shicheng Jiang, Tomomichi Kato, Myroslava Khomik, Janina Klatt, Alexander Knohl, Sara H Knox, Hideki Kobayashi, Georgia R Koerber, Olaf Kolle, Yoshiko Kosugi, Ayumi Kotani, Andrew Kowalski, Bart Kruijt, Julia Kurbatova, Werner L Kutsch, Hyojung Kwon, Samuli Launiainen, Tuomas Laurila, Beverly E Law, Ray Leuning, Yingnian Li, Michael Liddell, Jean-Marc Limousin, Marryanna Lion, Adam J Liska, Annalea K Lohila, Ana López-Ballesteros, Efrén López-Blanco, Benjamin Loubet, Denis Loustau, Antje Lucas-Moffat, Johannes Lüers, Siyan Ma, Craig Macfarlane, Vincenzo Magliulo, Regine Maier, Ivan Mammarella, Giovanni Manca, Barbara Marcolla, Hank A Margolis, Serena Marras, William Massman, Mikhail Mastepanov, Roser Matamala, Jaclyn Hatala Matthes, Francesco Mazzenga, Harry McCaughey, Ian McHugh, Andrew M S McMillan, Lutz Merbold, Wayne S Meyer, Tilden Meyers, Scott D Miller, Stefano Minerbi, Uta Moderow, Russell K Monson, Leonardo Montagnani, Caitlin E Moore, Eddy J Moors, Virginie Moreaux, Christine Moureaux, J William Munger, Taro Nakai, Johan Neirynck, Zoran Nesic, Giacomo Nicolini, Asko Noormets, Matthew Northwood, Marcelo Nosetto, Yann Nouvellon, Kimberly Novick, Walter C Oechel, Jørgen Eivind Olesen, Jean-Marc Ourcival, Shirley A Papuga, Frans-Jan W Parmentier, Eugenie Paul-Limoges, Marian Pavelka, Matthias Peichl, Elise Pendall, Richard P Phillips, Kim Pilegaard, Norbert Pirk, Gabriela Posse, Thomas L Powell, Heiko Prasse, Suzanne M Prober, Serge Rambal, Üllar Rannik, Naama Raz-Yaseef, Corinna Rebmann, David E Reed, Victor Resco de Dios, Natalia Restrepo-Coupe, Borja R Reverter, Marilyn Roland, Simone Sabbatini, Torsten Sachs, Scott R Saleska, Enrique P Sánchez-Cañete, Zulia M Sanchez-Mejia, Hans Peter Schmid, Marius Schmidt, Karl Schneider, Frederik Schrader, Ivan Schroder, Russell L Scott, Pavel Sedlák, Penélope Serrano-Ortíz, Changliang Shao, Peili Shi, Ivan Shironya, Lukas Siebicke, Ladislav Šigut, Richard P Silberstein, Costantino Sirca, Donatella Spano, Rainer Steinbrecher, Robert M Stevens, Cove Sturtevant, Andy Suyker, Torbern Tagesson, Satoru Takanashi, Yanhong Tang, Nigel Tapper, Jonathan Thom, Michele Tomassucci, Juha-Pekka Tuovinen, Shawn Urbanski, Riccardo Valentini, Michiel van der Molen, Eva van Gorsel, Ko van Huissteden, Andrej Varlagin, Joseph G Verfaillie, Timo Vesala, Caroline Vincke, Domenico Vitale, Natalia Vygodskaya, Jeffrey P Walker, Elizabeth Walter-Shea, Huimin Wang, Robin Weber, Sebastian Westermann, Christian Wille, Steven C Wofsy, Georg Wohlfahrt, Sebastian Wolf, William Woodgate, Yuelin Li, Roberto Zampedri, Junhui Zhang, Guoyi Zhou, Donatella Zona, Deb Agarwal, Sébastien C Biraud, Margaret Torn, Dario Papale
- Sophia Etzold, Frank J Sterck, Arun K Bose, Sabine Braun, Nina Buchmann, Werner Eugster, Arthur Gessler, Ansgar Kahmen, Richard L Peters, Yann Vitasse, Lorenz Walthert, Kasia Ziemińska, Roman Zweifel
- Volodymyr Trotsiuk, Florian Hartig, Maxime Cailleret, Flurin Babst, David I Forrester, Andri Baltensweiler, Nina Buchmann, Harald Bugmann, Arthur Gessler, Mana Gharun, Francesco Minunno, Andreas Rigling, Brigitte Rohner, Jonas Stillhard, Esther Thürig, Peter Waldner, Marco Ferretti, Werner Eugster, Marcus Schaub
- Gilberto Z Pastorello, Carlo Trotta, Eleonora Canfora, Housen Chu, Danielle S Christianson, You-Wei Cheah, Cristina Poindexter, Jiquen Chen, Abdelrahman Elbashandy, Marty Humphrey, Peter Isaac, Diego Polidori, Markus Reichstein, Alessio Ribeca, Catharine van Ingen, Nicolas Vuichard, Leiming Zhang, Brian Amiro, Christof Ammann, M Altaf Arain, Jonas Ardö, Timothy Arkebauer, Stefan K Arndt, Nicola Arriga, Marc Aubinet, Mika Aurela, Dennis Baldocchi, Alan Barr, Eric R Beamesderfer, Luca Belelli Marchesini, Onil Bergeron, Jason Beringer, Christian Bernhofer, Daniel Berveiller, Dave Billesbach, Thomas Andrew Black, Peter D Blanken, Gil Bohrer, Julia Boike, Paul V Bolstad, Damien Bonal, Jean-Marc Bonnefond, David R Bowling, Rosvel Bracho, Jason J Brodeur, Christian Brümmer, Nina Buchmann, Benoit Burban, Sean P Burns, Pauline Buysse, Peter Cale, Mauro Cavagna, Pierre Cellier, Shiping Chen, Isaac Chini, Torben Røjle Christensen, Jamie R Cleverly, Alessio Collalti, Claudia Consalvo, Bruce D Cook, David Cook, Carole Coursolle, Edoardo Cremonese, Peter S Curtis, Ettore D'Andrea, Humberto da Rocha, Xiaoqin Dai, Kenneth J Davis, Bruno De Cinti, Agnes de Grandcourt, Anne De Ligne, Raimundo Cosme de Oliveira, Nicolas Delpierre, Ankur R Desai, Carlos Marcelo Di Bella, Paul di Tommasi, A Johannes Dolman, Francisco Domingo, Gang Dong, Sabina Dore, Pierpaolo Duce, Eric Dufrêne, Allison Dunn, Jiří Dušek, Derek Eamus, Uwe Eichelmann, Hatim Abdalla M ElKhidir, Werner Eugster, Cacilia M Ewenz, Brent Ewers, Daniela Famulari, Silvano Fares, Iris Feigenwinter, Andrew Feitz, Rasmus Fensholt, Gianluca Filippa, Marc L Fischer, John Frank, Marta Galvagno, Mana Gharun, Damiano Gianelle, Bert Gielen, Beniamino Gioli, Anatoly Gitelson, Ignacio Goded, Mathias Göckede, Allen H Goldstein, Christopher M Gough, Michael L Goulden, Alexander Graf, Anne Griebel, Carsten Gruening, Thomas Grünwald, Albin Hammerle, Shijie Han, Xingguo Han, Birger Ulf Hansen, Chad Hanson, Juha Hatakka, Yongtao He, Markus Hehn, Bernard Heinesch, Nina Hinko-Najera, Lukas Hörtnagl, Lindsay B Hutley, Andreas Ibrom, Hiroki Ikawa, Marcin Jackowicz-Korczynski, Dalibor Janouš, Wilma Jans, Rachhpal Jassal, Shicheng Jiang, Tomomichi Kato, Myroslava Khomik, Janina Klatt, Alexander Knohl, Sara H Knox, Hideki Kobayashi, Georgia R Koerber, Olaf Kolle, Yoshiko Kosugi, Ayumi Kotani, Andrew Kowalski, Bart Kruijt, Julia Kurbatova, Werner L Kutsch, Hyojung Kwon, Samuli Launiainen, Tuomas Laurila, Beverly E Law, Ray Leuning, Yingnian Li, Michael Liddell, Jean-Marc Limousin, Marryanna Lion, Adam J Liska, Annalea K Lohila, Ana López-Ballesteros, Efrén López-Blanco, Benjamin Loubet, Denis Loustau, Antje Lucas-Moffat, Johannes Lüers, Siyan Ma, Craig Macfarlane, Vincenzo Magliulo, Regine Maier, Ivan Mammarella, Giovanni Manca, Barbara Marcolla, Hank A Margolis, Serena Marras, William Massman, Mikhail Mastepanov, Roser Matamala, Jaclyn Hatala Matthes, Francesco Mazzenga, Harry McCaughey, Ian McHugh, Andrew M S McMillan, Lutz Merbold, Wayne S Meyer, Tilden Meyers, Scott D Miller, Stefano Minerbi, Uta Moderow, Russell K Monson, Leonardo Montagnani, Caitlin E Moore, Eddy J Moors, Virginie Moreaux, Christine Moureaux, J William Munger, Taro Nakai, Johan Neirynck, Zoran Nesic, Giacomo Nicolini, Asko Noormets, Matthew Northwood, Marcelo Nosetto, Yann Nouvellon, Kimberly Novick, Walter C Oechel, Jørgen Eivind Olesen, Jean-Marc Ourcival, Shirley A Papuga, Frans-Jan W Parmentier, Eugenie Paul-Limoges, Marian Pavelka, Matthias Peichl, Elise Pendall, Richard P Phillips, Kim Pilegaard, Norbert Pirk, Gabriela Posse, Thomas L Powell, Heiko Prasse, Suzanne M Prober, Serge Rambal, Üllar Rannik, Naama Raz-Yaseef, Corinna Rebmann, David E Reed, Victor Resco de Dios, Natalia Restrepo-Coupe, Borja R Reverter, Marilyn Roland, Simone Sabbatini, Torsten Sachs, Scott R Saleska, Enrique P Sánchez-Cañete, Zulia M Sanchez-Mejia, Hans Peter Schmid, Marius Schmidt, Karl Schneider, Frederik Schrader, Ivan Schroder, Russell L Scott, Pavel Sedlák, Penélope Serrano-Ortíz, Changliang Shao, Peili Shi, Ivan Shironya, Lukas Siebicke, Ladislav Šigut, Richard P Silberstein, Costantino Sirca, Donatella Spano, Rainer Steinbrecher, Robert M Stevens, Cove Sturtevant, Andy Suyker, Torbern Tagesson, Satoru Takanashi, Yanhong Tang, Nigel Tapper, Jonathan Thom, Michele Tomassucci, Juha-Pekka Tuovinen, Shawn Urbanski, Riccardo Valentini, Michiel van der Molen, Eva van Gorsel, Ko van Huissteden, Andrej Varlagin, Joseph G Verfaillie, Timo Vesala, Caroline Vincke, Domenico Vitale, Natalia Vygodskaya, Jeffrey P Walker, Elizabeth Walter-Shea, Huimin Wang, Robin Weber, Sebastian Westermann, Christian Wille, Steven Wofsy, Georg Wohlfahrt, Sebastian Wolf, William Woodgate, Yuelin Li, Roberto Zampedri, Junhui Zhang, Guoyi Zhou, Donatella Zona, Deb Agarwal, Sébastien C Biraud, Margaret Torn, Dario Papale
- Lukas Hörtnagl, Matti Barthel, Nina Buchmann, Werner Eugster, Klaus Butterbach-Bahl, Eugenio Díaz-Pinés, Matthias Zeeman, Katja Klumpp, Ralf Kiese, Michael Bahn, Albin Hammerle, Haiyan Lu, Thomas Ladreiter-Knauss, Susanne Burri, Lutz Merbold