2020 November 11 -- I gave a talk in the Source2Sink seminar series about our work in Cambridge on the sediment and particulate organic carbon transport in the Irrawaddy and Salween Rivers. It is available on Youtube here. You can also get a pdf version of the slides here.

2020 September 18 -- Our paper "Integrating Suspended Sediment Flux in Large Alluvial River Channels: Application of a Synoptic Rouse‐Based Model to the Irrawaddy and Salween Rivers" has been published in the Journal of Geophysical Research: Earth Surface (Open Access).

2020 June 25 -- I gave an invited talk at the Goldschmidt Conference on the geochemical composition and the weathering signal in Irrawaddy River sediments. Given the overwhelmingly postive reception of the EGU presentation, I made this one a webpage too.

2020 April 8 -- I gave an online presentation at the EGU General Meeting the approach we are using to estimate sediment flux and composition in the Irrawaddy and the Salween Rivers (manuscript in review). Instead of a regular poster, I made it a webpage, which takes better advantage of the virtual conference format.


I was born in Vilnius, Lithuania. I obtained my BS in Chemistry at Jacobs University (Bremen, Germany) in 2011. I obtained my MS and PhD in Earth Sciences at the University of Southern California (Los Angeles, USA) in 2014 and 2017, respectively, where I worked with Doug Hammond and Josh West on Ge and Si isotope systematics in continental and marine low-temperature environments. I am currently at the University of Cambridge (Cambridge, UK), working with Ed Tipper and Mike Bickle on weathering and carbon fluxes of large rivers. I am also contributing to efforts in making the geoscience community more diverse and inclusive. Finally, I am always interested in the interface between science and public policy.

Contact Details

Dr. J. Jotautas Baronas
Dept of Earth Sciences
Downing St
Cambridge, CB2 3EQ
United Kingdom


* M A Torres, J J Baronas (2020). Modulation of riverine concentration-discharge relationships by changes in the shape of the water transit time distribution, In review at Global Biogeochemical Cycles, preprint at EarthArXiv.

* L Urban, A Holzer, J J Baronas, M Hall, P Braeuninger-Weimer, M Scherm, D Kunz, S Perera, D E Martin-Herranz, E T Tipper, S J Salter, M R Stammnitz (2020). Freshwater monitoring with nanopore sequencing, In review at eLife, preprint at bioRxiv.

J J Baronas, E I Stevenson, C R Hackney, S E Darby, M J Bickle, R G Hilton, C S Larkin, D R Parsons, Aung Myo Khaing, E T Tipper. (2020). Integrating suspended sediment flux in large alluvial river channels: Application of a synoptic Rouse-based model to the Irrawaddy and Salween rivers, Journal of Geophysical Research: Earth Surface, 125, e2020JF005554.

J J Baronas, A J West, K W Burton, D E Hammond, S Opfergelt, P Pogge von Strandmann, R H James & O J Rouxel (2020). Ge and Si isotope behavior during intense tropical weathering and ecosystem cycling, Global Biogeochemical Cycles, 34, e2019GB006522.

J J Baronas, D E Hammond, O J Rouxel & D R Monteverde (2019). A first look at dissolved Ge isotopes in marine sediments, Frontiers in Earth Science, 7, 162.

J J Baronas, M A Torres, A J West, O Rouxel, B Georg, J Bouchez, J Gaillardet & D E Hammond (2018). Ge and Si isotope signatures in rivers: A quantitative multi-proxy approach, Earth and Planetary Science Letters , 503, 194-215.

D R Monteverde, J B Sylvan, C Suffridge, J J Baronas, E Fichot, J A Fuhrman, W M Berelson & S Sanudo-Wilhelmy (2018). Distribution of extracellular flavins in a coastal marine basin and their relationship to redox gradients and microbial community members, Environmental Science and Technology , 52, 12265-12274.

J J Baronas, D E Hammond, J McManus, C G Wheat & C Siebert (2017). A global Ge isotope budget, Geochimica et Cosmochimica Acta , 203, 265-283.

J J Baronas, M A Torres, K E Clark & A J West (2017). Mixing as a driver of temporal variations in river hydrochemistry: 2. Major and trace element concentration dynamics in the Andes-Amazon transition, Water Resources Research , 53, 3120-3145.

M A Torres, J J Baronas, K E Clark, S J Feakins & A J West (2017). Mixing as a driver of temporal variations in river hydrochemistry: 1. Insights from conservative tracers in the Andes-Amazon transition, Water Resources Research , 53, 3102-3119.

J J Baronas, D E Hammond, W M Berelson, J McManus & S Severmann (2016). Germanium--silicon fractionation in a river-influenced continental margin: The Northern Gulf of Mexico, Geochimica et Cosmochimica Acta , 178, 124-142.

W Z Haskell, M G Prokopenko, D E Hammond, R H Stanley, W M Berelson, J J Baronas, J C Fleming & L Aluwihare (2016). An organic carbon budget for coastal Southern California determined by estimates of vertical nutrient flux, net community production and export, Deep Sea Research Part I: Oceanographic Research Papers , 116, 49-76.