27 Mar 2020
| 27 Mar 2020
Successful practice in early career networks: insights from the polar sciences
Pascal Bohleber
Ice Core Young Scientists (ICYS)
Department of Environmental Sciences, Informatics and Statistics, Ca'Foscari University of Venice, Via Torino 155, 30172 Mestre, Venice, Italy
Ice Core Young Scientists (ICYS)
Association of Polar Early Career Scientists (APECS)
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Telegrafenberg A45-2N, Potsdam, 14473,
Germany
Kirsti Ashworth
UK Future Earth Early Career Researchers and Practitioners Network
Lancaster Environment Centre, Lancaster University, Lancaster, UK
Chelsey A. Baker
UK Polar Network (UKPN)
Department of Ocean and Earth Science, University of Southampton, Southampton, UK
now at: National Oceanography Centre, Southampton, UK
Anna Belcher
UK Polar Network (UKPN)
British Antarctic Survey, Cambridge, UK
Jilda Alicia Caccavo
Association of Polar Early Career Scientists (APECS)
Berlin Center for Genomics in Biodiversity Research, Koenigin-Luise-Str. 6–8, 14195 Berlin, Germany
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
Holly E. Jenkins
UK Polar Network (UKPN)
Department of Ocean and Earth Science, University of Southampton, Southampton, UK
Erin Satterthwaite
Future Earth, School of Global Environmental Sustainability, Colorado State University, 108 Johnson Dr, Fort Collins, CO 80523, USA
National Center for Ecological Analysis and Synthesis, 735 State St, Santa Barbara, CA 93101, USA
Andrea Spolaor
Association of Polar Early Career Scientists (APECS)
Institute of Polar Sciences, ISP-CNR, Campus Scientifico Via Torino 155, 30172 Mestre, Venice, Italy
V. Holly L. Winton
Ice Core Young Scientists (ICYS)
British Antarctic Survey, Cambridge, UK
Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand
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Amaelle Landais, Cécile Agosta, Françoise Vimeux, Olivier Magand, Cyrielle Solis, Alexandre Cauquoin, Niels Dutrievoz, Camille Risi, Christophe Leroy-Dos Santos, Elise Fourré, Olivier Cattani, Olivier Jossoud, Bénédicte Minster, Frédéric Prié, Mathieu Casado, Aurélien Dommergue, Yann Bertrand, and Martin Werner
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Andrea Spolaor, Federico Scoto, Catherine Larose, Elena Barbaro, Francois Burgay, Mats P. Bjorkman, David Cappelletti, Federico Dallo, Fabrizio de Blasi, Dmitry Divine, Giuliano Dreossi, Jacopo Gabrieli, Elisabeth Isaksson, Jack Kohler, Tonu Martma, Louise S. Schmidt, Thomas V. Schuler, Barbara Stenni, Clara Turetta, Bartłomiej Luks, Mathieu Casado, and Jean-Charles Gallet
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Christophe Leroy-Dos Santos, Elise Fourré, Cécile Agosta, Mathieu Casado, Alexandre Cauquoin, Martin Werner, Benedicte Minster, Frédéric Prié, Olivier Jossoud, Leila Petit, and Amaëlle Landais
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Preprint archived
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Simone Ventisette, Samuele Baldini, Claudio Artoni, Silvia Becagli, Laura Caiazzo, Barbara Delmonte, Massimo Frezzotti, Raffaello Nardin, Joel Savarino, Mirko Severi, Andrea Spolaor, Barbara Stenni, and Rita Traversi
EGUsphere, https://doi.org/10.5194/egusphere-2023-393, https://doi.org/10.5194/egusphere-2023-393, 2023
Preprint archived
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Niccolò Maffezzoli, Eliza Cook, Willem G. M. van der Bilt, Eivind N. Støren, Daniela Festi, Florian Muthreich, Alistair W. R. Seddon, François Burgay, Giovanni Baccolo, Amalie R. F. Mygind, Troels Petersen, Andrea Spolaor, Sebastiano Vascon, Marcello Pelillo, Patrizia Ferretti, Rafael S. dos Reis, Jefferson C. Simões, Yuval Ronen, Barbara Delmonte, Marco Viccaro, Jørgen Peder Steffensen, Dorthe Dahl-Jensen, Kerim H. Nisancioglu, and Carlo Barbante
The Cryosphere, 17, 539–565, https://doi.org/10.5194/tc-17-539-2023, https://doi.org/10.5194/tc-17-539-2023, 2023
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François Burgay, Rafael Pedro Fernández, Delia Segato, Clara Turetta, Christopher S. Blaszczak-Boxe, Rachael H. Rhodes, Claudio Scarchilli, Virginia Ciardini, Carlo Barbante, Alfonso Saiz-Lopez, and Andrea Spolaor
The Cryosphere, 17, 391–405, https://doi.org/10.5194/tc-17-391-2023, https://doi.org/10.5194/tc-17-391-2023, 2023
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The paper presents the first ice-core record of bromine (Br) in the Antarctic plateau. By the observation of the ice core and the application of atmospheric chemical models, we investigate the behaviour of bromine after its deposition into the snowpack, with interest in the effect of UV radiation change connected to the formation of the ozone hole, the role of volcanic deposition, and the possible use of Br to reconstruct past sea ice changes from ice core collect in the inner Antarctic plateau.
Antoine Grisart, Mathieu Casado, Vasileios Gkinis, Bo Vinther, Philippe Naveau, Mathieu Vrac, Thomas Laepple, Bénédicte Minster, Frederic Prié, Barbara Stenni, Elise Fourré, Hans Christian Steen-Larsen, Jean Jouzel, Martin Werner, Katy Pol, Valérie Masson-Delmotte, Maria Hoerhold, Trevor Popp, and Amaelle Landais
Clim. Past, 18, 2289–2301, https://doi.org/10.5194/cp-18-2289-2022, https://doi.org/10.5194/cp-18-2289-2022, 2022
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Raffaello Nardin, Mirko Severi, Alessandra Amore, Silvia Becagli, Francois Burgay, Laura Caiazzo, Virginia Ciardini, Giuliano Dreossi, Massimo Frezzotti, Sang-Bum Hong, Ishaq Khan, Bianca Maria Narcisi, Marco Proposito, Claudio Scarchilli, Enricomaria Selmo, Andrea Spolaor, Barbara Stenni, and Rita Traversi
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The first step to exploit all the potential information buried in ice cores is to produce a reliable age scale. Based on chemical and isotopic records from the 197 m Antarctic GV7(B) ice core, accurate dating was achieved and showed that the archive spans roughly the last 830 years. The relatively high accumulation rate allowed us to use the non-sea-salt sulfate seasonal pattern to count annual layers. The accumulation rate reconstruction exhibited a slight increase since the 18th century.
Federico Dallo, Daniele Zannoni, Jacopo Gabrieli, Paolo Cristofanelli, Francescopiero Calzolari, Fabrizio de Blasi, Andrea Spolaor, Dario Battistel, Rachele Lodi, Warren Raymond Lee Cairns, Ann Mari Fjæraa, Paolo Bonasoni, and Carlo Barbante
Atmos. Meas. Tech., 14, 6005–6021, https://doi.org/10.5194/amt-14-6005-2021, https://doi.org/10.5194/amt-14-6005-2021, 2021
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Our work showed how the adoption of low-cost technology could be useful in environmental research and monitoring. We focused our work on tropospheric ozone, but we also showed how to make a general purpose low-cost sensing system which may be adapted and optimised to be used in many other case studies. Given the importance of providing quality data, we put a lot of effort in the sensor's calibration, and we believe that our results show how to exploit the potential of the low-cost technology.
Michele Bertò, David Cappelletti, Elena Barbaro, Cristiano Varin, Jean-Charles Gallet, Krzysztof Markowicz, Anna Rozwadowska, Mauro Mazzola, Stefano Crocchianti, Luisa Poto, Paolo Laj, Carlo Barbante, and Andrea Spolaor
Atmos. Chem. Phys., 21, 12479–12493, https://doi.org/10.5194/acp-21-12479-2021, https://doi.org/10.5194/acp-21-12479-2021, 2021
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We present the daily and seasonal variability in black carbon (BC) in surface snow inferred from two specific experiments based on the hourly and daily time resolution sampling during the Arctic spring in Svalbard. These unique data sets give us, for the first time, the opportunity to evaluate the associations between the observed surface snow BC mass concentration and a set of predictors corresponding to the considered meteorological and snow physico-chemical parameters.
Pascal Bohleber, Marco Roman, Martin Šala, Barbara Delmonte, Barbara Stenni, and Carlo Barbante
The Cryosphere, 15, 3523–3538, https://doi.org/10.5194/tc-15-3523-2021, https://doi.org/10.5194/tc-15-3523-2021, 2021
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Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) offers micro-destructive, micrometer-scale impurity analysis of ice cores. For improved understanding of the LA-ICP-MS signals, novel 2D impurity imaging is applied to selected glacial and interglacial samples of Antarctic deep ice cores. This allows evaluating the 2D impurity distribution in relation to ice crystal features and assessing implications for investigating highly thinned climate proxy signals in deep polar ice.
Delia Segato, Maria Del Carmen Villoslada Hidalgo, Ross Edwards, Elena Barbaro, Paul Vallelonga, Helle Astrid Kjær, Marius Simonsen, Bo Vinther, Niccolò Maffezzoli, Roberta Zangrando, Clara Turetta, Dario Battistel, Orri Vésteinsson, Carlo Barbante, and Andrea Spolaor
Clim. Past, 17, 1533–1545, https://doi.org/10.5194/cp-17-1533-2021, https://doi.org/10.5194/cp-17-1533-2021, 2021
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Human influence on fire regimes in the past is poorly understood, especially at high latitudes. We present 5 kyr of fire proxies levoglucosan, black carbon, and ammonium in the RECAP ice core in Greenland and reconstruct for the first time the fire regime in the high North Atlantic region, comprising coastal east Greenland and Iceland. Climate is the main driver of the fire regime, but at 1.1 kyr BP a contribution may be made by the deforestation resulting from Viking colonization of Iceland.
Christophe Leroy-Dos Santos, Mathieu Casado, Frédéric Prié, Olivier Jossoud, Erik Kerstel, Morgane Farradèche, Samir Kassi, Elise Fourré, and Amaëlle Landais
Atmos. Meas. Tech., 14, 2907–2918, https://doi.org/10.5194/amt-14-2907-2021, https://doi.org/10.5194/amt-14-2907-2021, 2021
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We developed an instrument that can generate water vapor at low humidity at a very stable level. This instrument was conceived to calibrate water vapor isotopic records obtained in very dry places such as central Antarctica. Here, we provide details on the instrument as well as results obtained for correcting water isotopic records for diurnal variability during a long field season at the Concordia station in East Antarctica.
Elena Barbaro, Krystyna Koziol, Mats P. Björkman, Carmen P. Vega, Christian Zdanowicz, Tonu Martma, Jean-Charles Gallet, Daniel Kępski, Catherine Larose, Bartłomiej Luks, Florian Tolle, Thomas V. Schuler, Aleksander Uszczyk, and Andrea Spolaor
Atmos. Chem. Phys., 21, 3163–3180, https://doi.org/10.5194/acp-21-3163-2021, https://doi.org/10.5194/acp-21-3163-2021, 2021
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This paper shows the most comprehensive seasonal snow chemistry survey to date, carried out in April 2016 across 22 sites on 7 glaciers across Svalbard. The dataset consists of the concentration, mass loading, spatial and altitudinal distribution of major ion species (Ca2+, K+,
Na2+, Mg2+,
NH4+, SO42−,
Br−, Cl− and
NO3−), together with its stable oxygen and hydrogen isotope composition (δ18O and
δ2H) in the snowpack. This study was part of the larger Community Coordinated Snow Study in Svalbard.
Christian Zdanowicz, Jean-Charles Gallet, Mats P. Björkman, Catherine Larose, Thomas Schuler, Bartłomiej Luks, Krystyna Koziol, Andrea Spolaor, Elena Barbaro, Tõnu Martma, Ward van Pelt, Ulla Wideqvist, and Johan Ström
Atmos. Chem. Phys., 21, 3035–3057, https://doi.org/10.5194/acp-21-3035-2021, https://doi.org/10.5194/acp-21-3035-2021, 2021
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Black carbon (BC) aerosols are soot-like particles which, when transported to the Arctic, darken snow surfaces, thus indirectly affecting climate. Information on BC in Arctic snow is needed to measure their impact and monitor the efficacy of pollution-reduction policies. This paper presents a large new set of BC measurements in snow in Svalbard collected between 2007 and 2018. It describes how BC in snow varies across the archipelago and explores some factors controlling these variations.
François Burgay, Andrea Spolaor, Jacopo Gabrieli, Giulio Cozzi, Clara Turetta, Paul Vallelonga, and Carlo Barbante
Clim. Past, 17, 491–505, https://doi.org/10.5194/cp-17-491-2021, https://doi.org/10.5194/cp-17-491-2021, 2021
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We present the first Fe record from the NEEM ice core, which provides insight into past atmospheric Fe deposition in the Arctic. Considering the biological relevance of Fe, we questioned if the increased eolian Fe supply during glacial periods could explain the marine productivity variability in the Fe-limited subarctic Pacific Ocean. We found no overwhelming evidence that eolian Fe fertilization triggered any phytoplankton blooms, likely because other factors play a more relevant role.
Abhijith U. Venugopal, Nancy A. N. Bertler, Rebecca L. Pyne, Helle A. Kjær, V. Holly L. Winton, Paul A. Mayewski, and Giuseppe Cortese
Clim. Past Discuss., https://doi.org/10.5194/cp-2020-151, https://doi.org/10.5194/cp-2020-151, 2020
Manuscript not accepted for further review
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We present a new and highly resolved glacial record of nitrate and calcium from a deep ice core obtained from Roosevelt Island, West Antarctica. Our data show a dependent association among nitrate and non-sea salt calcium (mineral dust) as observed previously in East Antarctica. The spatial pattern indicates that mineral dust is scavenging nitrate from the atmosphere and the westerlies are dispersing the dust-bound nitrate across Antarctica, making nitrate a potential paleo-westerly wind proxy.
Mathieu Casado, Thomas Münch, and Thomas Laepple
Clim. Past, 16, 1581–1598, https://doi.org/10.5194/cp-16-1581-2020, https://doi.org/10.5194/cp-16-1581-2020, 2020
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The isotopic composition in ice cores from Antarctica is usually interpreted as a temperature proxy. Using a forward model, we show how different the signal in ice cores and the actual climatic signal are. Precipitation intermittency and diffusion do indeed affect the archived signal, leading to the reshuffling of the signal which limits the ability to reconstruct high-resolution climatic variations with ice cores.
Cited articles
Adams, A. S., Steiner, A. L., and Wiedinmyer, C.: The earth science women’s
network (ESWN): Community-driven mentoring for women in the atmospheric
sciences, B. Am. Meteorol. Soc., 97, 345–354,
2016. a
APECS: APECS Strategic Plan 2016–2020, APECS website,
https://doi.org/10.5281/zenodo.1477872, 2016. a
APECS: APECS Council Project Groups, APECS website, available at:
https://www.apecs.is/who-we-are/leadership/council/council-project-groups.html (last access: 29 November 2019),
2019. a
Bohleber, P., Cavitte, M., Koffman, B., Markle, B., Pavlova, P., Winstrup, M.,
and Winton, H.: Ice Core Young Scientists, Past Global Changes Magazine, 22,
96, 2014. a
Bohleber, P., Cavitte, M., Koffman, B., Markle, B., Pavlova, P., Winstrup, M.,
and Winton, H.: Ice Core Young Scientists workshop, Past Global Changes
Magazine, 24, 49, 2016. a
Casado, M., Gremion, G., Rosenbaum, P., Caccavo, J. A., Aho, K., Champollion, N., Connors, S. L., Dahood, A., Fernandez, A., Lizotte, M., Mintenbeck, K., Poloczanska, E., and Fugmann, G.: The benefits to climate science of including Early Career Scientists as reviewers, Geosci. Commun. Discuss., https://doi.org/10.5194/gc-2019-20, accepted, 2019. a
Cvitanovic, C., Hobday, A., van Kerkhoff, L., and Marshall, N.: Overcoming
barriers to knowledge exchange for adaptive resource management; the
perspectives of Australian marine scientists, Mar. Policy, 52, 38–44,
2015. a
De Vries, D. R., Marschall, E. A., and Stein, R. A.: Exploring the peer review
process: what is it, does it work, and can it be improved?, Fisheries, 34,
270–279, 2009. a
Evans, M. C. and Cvitanovic, C.: An introduction to achieving policy impact for
early career researchers, Palgrave Communications, 4, 1–12, 2018. a
Gordon, W.: Developing Scientists' “Soft” Skills, Eos, Transactions American
Geophysical Union, 95, 55–55, 2014. a
IPICS: IPICS White Papers, PAGES website, available at:
http://pastglobalchanges.org/science/end-aff/ipics/white-papers, last access: 29 November 2019. a
Lauer, M., Tabak, L., and Collins, F.: Opinion: the next generation researchers
initiative at NIH, P. Natl. Acad. Sci. USA, 114,
11801–11803, 2017. a
Majaneva, S., Hamon, G., Fugmann, G., Lisowska, M., and Baeseman, J.: Where are
they now? – A case study of the impact of international travel support for
early career Arctic researchers, Polar Sci., 10, 382–394, 2016. a
Ryabinin, V., Barbière, J., Haugan, P.,
Kullenber, G., Smith, N., McLean, C.,
Troisi, A., Fischer, A., Aricò, S., Aarup, T.,
Pissierssens, P., Visbeck, M.,
Enevoldsen, H. O., and Rigaud, J.:
The UN Decade of Ocean Science
for Sustainable Development,
Front. Mar. Sci. 6, 470,
https://doi.org/10.3389/fmars.2019.00470, 2019. a
Silver, P.: Advice for early-career peer reviewers and authors responding to
peer reviews, Freshw. Sci., 35, 1073–1075, 2016. a
Timm, K., Pope, A., Smieszek, M., Fugmann, G., and Zaika, Y.: Arctic science:
From knowledge to action, The Polar Journal, 7, 428–429, 2017. a
Weiler, C. S.: Meeting Ph. D. graduates' needs in a changing global
environment, Eos, Transactions American Geophysical Union, 88, 149–151,
2007. a
Xavier, J. C., Azinhaga, P. F., Seco, J., and Fugmann, G.: International Polar
Week as an educational activity to boost science–educational links: Portugal
as a case study, Polar Rec., 54, 360–365, 2018. a
Short summary
International Early Career Networks (ECN) are global voluntary communities of Early Career Scientists (ECS) aiming to advance the careers of ECS and to improve their inclusion into the international scientific community. We use member surveys alongside with case studies from well-established and long-term networks to elucidate the attributes that make a successful, sustainable ECN, and propose best practices for developing ECN successfully.
International Early Career Networks (ECN) are global voluntary communities of Early Career...
