Marti Gali Tapias

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Biography

I presently work on the biological carbon pump: the process by which marine microbes take up atmospheric carbon dioxide and export it to the deep ocean in form of sinking particles. In the ORCAS project I will combine numerical models (PISCES) and observations made by autonomous floats (bio-ARGO) to better understand and predict this climate-relevant process. Until recently, most of my research revolved around marine biogenic sulfur emissions and their influence on aerosols and climate. During my PhD at the Institut de Ciències del Mar (ICM, Barcelona) I used diverse experimental approaches and meta-analyses to understand the effect of sunlight on plankton dimethylsulfide (DMS) production. During my postdoc at Laval University (Quebec) I developed DMS-SAT, an algorithm that allows estimating marine DMS emission from remote sensing data.

Education

2013 – 2018. Postdoc at Takuvik Joint International Unit, Université Laval – CNRS, Québec (QC), Canada
2008 – 2012. PhD in Marine Sciences. Supervisor: Rafel Simó, Department of Marine Biology and Oceanography, Institut de Ciències del Mar (ICM, CSIC) – Universitat Politècnica de Catalunya.
2007 – 2008. MSc in Marine Sciences: Oceanography and Management of the Marine Environment. Supervisor: Rafel Simó. ICM – Universitat de Barcelona – Universitat Politècnica de Catalunya.
2002 – 2007. Degree in Environmental Sciences, major in Water Quality and Management. Faculty of Biology, Universitat de Barcelona.

Research

2019
Overview paper: New insights into aerosol and climate in the Arctic.
Abbatt, J.P.D., W.R. Leaitch, et al.
Atmospheric Chemistry and Physics, https://doi.org/10.5194/acp-19-2527-2019, Open Access
 
Sensitivity of Arctic sulfate aerosol and clouds to changes in future surface seawater dimethylsulfide concentrations.
Mahmood, R., K. von Salzen, A.-L. Norman, M. Galí, and M. Levasseur.
Atmospheric Chemistry and Physics, , https://doi.org/10.5194/acp-19-6419-2019, Open Access
 
Light, mixing and the phytoplankton spring bloom at a retreating Arctic ice edge.
Randelhoff, A., L. Oziel, P. Massicotte, G. Bécu, M. Galí, L. Lacour, D. Dumont, A. Vladoiu, J.E. Tremblay, C. Marec, M. Babin.
Elementa: Science of the Anthropocene, in press
 
Higher contribution of globally rare bacterial taxa reflects environmental transitions across the surface ocean.
Ruiz‐González, C., R. Logares, M. Sebastián, M. Mestre, R. Rodríguez‐Martínez, M. Galí, M.M. Sala, S.G. Acinas, C.M. Duarte and J.M. Gasol.
Molecular Ecology 28: 1930-1945, https://doi.org/10.1111/mec.15026.
 
2018
Harnessing remote sensing to address critical science questions on ocean-atmosphere interactions

G Neukermans, T Harmel, M Galí, et al.
Elementa: Science of the Anthropocene, in press, https://doi.org/10.1525/elementa.331

Sea-surface dimethylsulfide (DMS) concentration from satellite data at global and regional scales

M Galí, M Levasseur, E Devred, R Simó, M Babin
Biogeosciences 15 (11), 3497-3519, https://doi.org/10.5194/bg-15-3497-2018

Modelling dimethylsulfide diffusion in the algal external boundary layer: implications for mutualistic and signalling roles
M Lavoie, M Galí, C Sévigny, DJ Kieber, WG Sunda, CE Spiese, F Maps, M Levasseur
Environmental Microbiology, https://doi.org/10.1111/1462-2920.14417
 
New insights into aerosol and climate in the Arctic
JPD Abbatt, WR Leaitch, et al.
Atmospheric Chemistry and Physics Discussions, https://doi.org/10.5194/acp-2018-995
 
Sensitivity of Arctic sulfate aerosol and clouds to changes in future surface seawater dimethylsulfide concentrations
R Mahmood, K von Salzen, A-L Norman, M Galí, M Levasseur
Atmospheric Chemistry and Physics Discussions, https://doi.org/10.5194/acp-2018-876
 
2017
New particle formation in the Svalbard region 2006--2015
J Heintzenberg, P Tunved, M Galí, C Leck
Atmospheric Chemistry & Physics 17 (10), https://doi.org/10.5194/acp-17-6153-2017
 
2016
CDOM sources and photobleaching control quantum yields for oceanic DMS photolysis
M Galí, DJ Kieber, C Romera-Castillo, JD Kinsey, E Devred, GL Pérez, ...
Environmental science & technology 50 (24), 13361-13370, https://doi.org/10.1021/acs.est.6b04278

A high-resolution time-depth view of dimethylsulphide cycling in the surface sea
SJ Royer, M Galí, AS Mahajan, ON Ross, GL Pérez, ES Saltzman, R Simó
Scientific reports 6, 32325, doi:10.1038/srep32325

Bio-optical characterization of offshore NW Mediterranean waters: CDOM contribution to the absorption budget and diffuse attenuation of downwelling irradiance
GL Pérez, M Galí, SJ Royer, H Sarmento, JM Gasol, C Marrasé, R Simó
Deep Sea Research Part I: Oceanographic Research Papers 114, 111-127, https://doi.org/10.1016/j.dsr.2016.05.011
 
2015
A remote sensing algorithm for planktonic dimethylsulfoniopropionate (DMSP) and an analysis of global patterns
M Galí, E Devred, M Levasseur, SJ Royer, M Babin
Remote Sensing of Environment 171, 171-184, https://doi.org/10.1016/j.rse.2015.10.012

A meta‐analysis of oceanic DMS and DMSP cycling processes: Disentangling the summer paradox
M Galí, R Simó
Global Biogeochemical Cycles 29 (4), 496-515, https://doi.org/10.1002/2014GB004940
 
Small‐scale variability patterns of DMS and phytoplankton in surface waters of the tropical and subtropical Atlantic, Indian, and Pacific Oceans
SJ Royer, AS Mahajan, M Galí, E Saltzman, R Simó
Geophysical Research Letters 42 (2), 475-483, https://doi.org/10.1002/2014GL062543

Iodine oxide in the global marine boundary layer
C Prados-Roman, CA Cuevas, T Hay, RP Fernandez, AS Mahajan, ...
Atmospheric Chemistry and Physics 15 (2), 583-593, https://doi.org/10.5194/acp-15-583-2015
 
2014
Development and validation of a shipboard system for measuring high-resolution vertical profiles of aqueous dimethylsulfide concentrations using chemical ionisatio...
SJ Royer, M Galí, ES Saltzman, CA McCormick, TG Bell, R Simó
Environmental Chemistry 11 (3), 309-317, https://doi.org/10.1071/EN13203
 
2013
Diel patterns of oceanic dimethylsulfide (DMS) cycling: Microbial and physical drivers
M Galí, R Simó, M Vila‐Costa, C Ruiz‐González, JM Gasol, P Matrai
Global Biogeochemical Cycles 27 (3), 620-636, https://doi.org/10.1002/gbc.20047
 
Spectral irradiance dependence of sunlight effects on plankton dimethylsulfide production
M Gali, C Ruiz-González, T Lefort, JM Gasol, C Cardelús, C Romera-Castillo, R Simó
Limnology and Oceanography 58 (2), 489-504, https://doi.org/10.4319/lo.2013.58.2.0489

Combined effect of light exposure and microbial activity on distinct dissolved organic matter pools. A seasonal field study in an oligotrophic coastal system (Blanes B...
C Romera-Castillo, XA Álvarez-Salgado, M Galí, JM Gasol, C Marrasé
Marine Chemistry 148, 44-51, https://doi.org/10.1016/j.marchem.2012.10.004

Differential response of planktonic primary, bacterial, and dimethylsulfide production rates to static vs. dynamic light exposure in upper mixed-layer summer sea waters
M Galí, R Simó, GL Pérez, C Ruiz-González, H Sarmento, SJ Royer, ...
Biogeosciences 10, 7983– 7998, https://doi.org/10.5194/bg-10-7983-2013
 
2012
An original mode of symbiosis in open ocean plankton
J Decelle, I Probert, L Bittner, Y Desdevises, S Colin, C de Vargas, M Galí, R Simó, F Not
Proceedings of the National Academy of Sciences 109 (44), 18000-18005, https://doi.org/10.1073/pnas.1212303109
 
Interactive effects of vertical mixing, solar radiation and microbial activity on oceanic dimethylated sulfur cycling
M Galí
Universitat Politècnica de Catalunya, http://digital.csic.es/handle/10261/95027

Sunlight effects on the osmotrophic uptake of DMSP-sulfur and leucine by Polar phytoplankton
C Ruiz-González, M Galí, E Sintes, GJ Herndl, JM Gasol, R Simó
PLoS One 7 (9), e45545, https://doi.org/10.1371/journal.pone.0045545

Sunlight effects on the DMSP-sulfur and leucine assimilation activities of polar heterotrophic bacterioplankton
C Ruiz-González, M Galí, JM Gasol, R Simó
Biogeochemistry 110 (1-3), 57-74, https://doi.org/10.1007/s10533-012-9699-y

Annual variability in light modulation of bacterial heterotrophic activity in surface northwestern Mediterranean waters
C Ruiz-González, M Galí, T Lefort, C Cardelús, R Simó, JM Gasol
Limnology and Oceanography 57 (5), 1376-1388, https://doi.org/10.4319/lo.2012.57.5.1376

Seasonal patterns in the sunlight sensitivity of bacterioplankton from Mediterranean surface coastal waters
C Ruiz-Gonzalez, T Lefort, M Galí, M Montserrat Sala, R Sommaruga, ...
FEMS microbiology ecology 79 (3), 661-674, https://doi.org/10.1111/j.1574-6941.2011.01247.x

Análisis de DMS con cromatografía de gases (GC) acoplada a un detector fotométrico de llama (FPD) selectivo para azufre
M Galí, R Simó
Consejo Superior de Investigaciones Científicas (España)

Muestreo de agua de mar para el análisis de dimetilsulfuro (DMS) y dimetilsufoniopropionato (DMSP) por cromatografía de gases (GC)
M Galí, R Simó
Consejo Superior de Investigaciones Científicas (España)
 
2011
Stimulation of gross dimethylsulfide (DMS) production by solar radiation
M Galí, V Saló, R Almeda, A Calbet, R Simó
Geophysical Research Letters 38 (15), https://doi.org/10.1029/2011GL048051
 
2010
Occurrence and cycling of dimethylated sulfur compounds in the Arctic during summer receding of the ice edge
M Galí, R Simó
Marine Chemistry 122 (1-4), 105-117, https://doi.org/10.1016/j.marchem.2010.07.003