Arvind Singh

Telephone: +91-79-2631 4366

Research Interests

·        Marine Nitrogen Cycle

·        Ocean Biogeochemistry

·        Marine C:N:P Stoichiometry

·        Anthropogenic Impacts on Marine Nitrogen Cycling

·        Climate Change

·        Isotopic Fractionation Processes


Professional Affiliations


·        Associate Professor (July 2020 - present) at PRL, Ahmedabad, India

·        Reader (December 2015 – June 2020) at PRL, Ahmedabad, India

·        Post-doctoral Fellow (May 2013 - December 2015) at GEOMAR, Kiel, Germany

·        Post-doctoral Fellow (September 2011 - April 2013) at University of Gothenburg, Sweden

·        NF-POGO Scholar (August 2011 - May 2012) at Bermuda Institute of Ocean Sciences (BIOS), Bermuda

·        Post-doctoral Fellow (February 2011 - August 2011) at PRL, Ahmedabad, India

·        POGO-SCOR Scholar (September 2009 - November 2009) at Max Plank Institute for Marine Microbiology (MPIMM), Bremen, Germany

·        Research Fellow (July 2006 - January 2011) at PRL, Ahmedabad, India

·        Project Associate (January 2005 - June 2006) at PRL, Ahmedabad, India



·      DST-Swarnajayanti Fellowship (2020-2021)

·      Member, Indian National Young Academy of Sciences (INYAS) (2021-2025)

·      Young Researcher Award, Ministry of Earth Sciences, India (2020)

·      Indian Geophysical Union (IGU) – Krishnan Medal (2020)

·      Associate, Indian Academy of Sciences (IASc), Bengaluru (2017-2020)

·      INSPIRE faculty fellowship, DST India (2015-2020)

·      Alexander von Humboldt Researcher Alumni fellowship (January 2015)

·      DFG (Leibniz-Preis) Post-doctoral fellowship (May 2015 - April 2016)

·      Sonderforschungsbereich ‘(SFB-754)’ Post-doctoral fellowship (October 2014 - April 2015)

·      Cluster of Excellence ‘The Future Ocean’ Post-doctoral fellowship (May 2013 - October 2014)

·      Gothenburg University Post-doctoral fellowship (March 2013 - April 2013)

·      Swedish Institute Post-doctoral fellowship (September 2011 - February 2013)

·      NF-POGO Center of Excellence 2011 fellowship for participating in a ten months Observational Oceanography training programme at BIOS, Bermuda

·      POGO-SCOR fellowship (2009) to work at MPIMM, Bremen Germany during September-November 2009


Professional Services


·        Editor: JGR: Oceans (an AGU journal) (July 2021 – present)

·        Topic Editor: Ocean Science (an EGU journal) (June 2020 – June 2021)

·        Member: Scientific Steering Committee of SOLAS (Surface Ocean Lower Atmosphere Study) (2022-2024)

·        Review Editor: Frontiers in Marine Science (2015 – present)

·        Member: Board of Studies, Pandit Deendayal Petroleum University, India (2020 - present)

·        Member: Board of Studies, Geology Department, Gujarat University, India (2019 - present)

·        Visiting faculty, Department of Climate Change, Gujarat University (2016 - present)

·        Chairperson (2018 – present) and Founding member of Early Career Scientists Network of IIOE-2

·        Founding member (2018 - 2021) of early career researchers network of IAPSO

·        Member: International Science Planning Committee of IIOSC-2022 at Goa

·        Co-convener of EGU General Assembly-2019 & 2020 session on Air-sea Chemical Fluxes


Peer-Reviewed Journal Articles


1.     Saxena, H., D. Sahoo, S. Nazirahmed, D. Rai, A. Khan, N. Sharma, S. Kumar, and A. Singh (2022), Contribution of Carbon Fixation towards Carbon Sink in the Ocean Twilight Zone. Geophysical Research Letters, doi://10.1029/2022GL099044

2.     Khan, A., A. Rahman, D. Sahoo, H. Saxena, A. Singh, and S. Kumar (2022), Nitrous oxide in the central Bay of Bengal during the summer monsoon. Regional Studies in Marine Science, 52, 102314, doi://10.1016/j.rsma.2022.102314

3.     Kumar, A., G. Shukla, and A. Singh (2022), Long Range Global Transport of Dust and Characterization of Dust, In Asian Atmospheric Pollution, pp. 483-504, Elsevier, doi:10.1016/B978-0-12-816693-2.00012-3.

4.     Varna, M., A. Singh, D. Sahoo, and D. Sengupta (2021), Strengthening of basin-scale ocean currents in winter drives decadal salinity decline in the eastern Arabian Sea. Geophysical Research Letters, 48, e2021GL094516.

5.     Sahoo, D., H. Saxena, S. Nazirahmed, S. Kumar, A. Sudheer, R. Bhushan, A. Sahay, and A. Singh (2021), Role of eddies and N2 fixation in regulating C:N:P proportions in the Bay of Bengal. Biogeochemistry, doi://10.1007/s10533-021-00833-4

6.     Rahman, A., A. Khan, A. Singh, and S. Kumar (2021), Hydrological characteristics of the Bay of Bengal water column using δ18O during the Indian summer monsoon. Continental Shelf Research, 226, 104491, doi://10.1016/j.csr.2021.104491

7.     Singh, A., L. Bach, C. Löscher, A. Paul, N. Ojha, and U. Riebesell (2021), Impact of increasing carbon dioxide on dinitrogen and carbon fixation rates under oligotrophic conditions and simulated upwelling. Limnology and Oceanography, 66(7), 2855-2867, doi://10.1002/lno.11795

8.     Singh, A. and P. Chaturvedi (2021), Error Propagation. Resonance, doi://10.1007/s12045-021-1185-1

9.     Kumar, P.K. and A. Singh (2021), Increase in summer monsoon rainfall over the northeast India during El Niño years since 1600, Climate Dynamics, 57, 851-863, doi:10.1007/s00382-021-05743-7.

10. Mehta, S., A. Singh and K. Thirumalai (2021), Uncertainty in palaeosalinity estimates from foraminiferal geochemical records in the northern Indian Ocean. Palaeogeography, Palaeoclimatology, Palaeoecology, 569, 110326

11. Vinayachandran, P.N.M., Y. Masumoto, M. Roberts, J. Hugget, I. Halo, A. Chatterjee, P. Amol, G.V.M. Gupta, A. Singh, A. Mukherjee, S. Prakash, L. Beckley, E. Raes, and R. Hood (2021), Reviews and syntheses: Physical and biogeochemical processes associated with upwelling in the Indian Ocean, Biogeosciences, 18, 5967–6029, doi:10.5194/bg-18-5967-2021

12. Phillips, H.E., A. Tandon, R. Furue, R. Hood, C. Ummenhofer, J. Benthuysen, V. Menezes, S. Hu, B. Webber, A. Franks, D. Cherian, E. Shroyer, M. Feng, H. Wijeskera, A. Chatterjee, L. Yu, J. Hermes, R. Murtugudde, T. Tozuka, D. Su, A. Singh, L. Centurioni, S. Prakash and J. Wiggert , 2021, Progress in understanding of Indian Ocean circulation, variability, air–sea exchange, and impacts on biogeochemistry, Ocean Science, 17, 1677–1751, doi:10.5194/os-17-1677-2021

13. Rixen, T., G. Cowie, B. Gaye, J. Goes, H.R. Gomes, R.R. Hood, Z. Lachkar, H. Schmidt, J. Segschneider, and A. Singh (2020), Reviews and syntheses: Present, past, and future of the oxygen minimum zone in the northern Indian Ocean. Biogeosciences, 17, 6051-6080, doi:10.5194/bg-17-6051-2020

14. Sahoo, D., H. Saxena, N. Tripathi, A. Khan, A. Rahaman, S. Kumar, A. Sudheer, and A. Singh (2020), Non-Redfieldian C:N:P ratio in the inorganic and organic pools of the Bay of Bengal during the summer monsoon. Marine Ecology Progress Series, 653, 41–55, doi:10.3354/meps13498

15. Tripathi, N., L. Sahu, A. Singh, R. Yadav, A. Patel, K. Patel, and P. Meenu. (2020), Elevated levels of biogenic nonmethane hydrocarbons in the marine boundary layer of the Arabian Sea during the intermonsoon. Journal of Geophysical Research: Atmospheres, 125, e2020JD032869. doi:10.1029/2020JD032869

16. Saxena, H., D. Sahoo, M. A. Khan, S. Kumar, A. K. Sudheer, and A. Singh (2020), Dinitrogen Fixation Rates in the Bay of Bengal during Summer Monsoon, Environmental Research Communications, 2, 051007, doi:10.1088/2515-7620/ab89fa

17. Tripathi, N., L. K. Sahu, A. Singh, R. Yadav, and K. K. Karati (2020), High levels of isoprene in the marine boundary layer of Arabian Sea during spring inter-monsoon: Role of phytoplankton blooms, ACS Earth and Space Chemistry, 4(4), 583-590, doi:10.1021/acsearthspacechem.

18. Thajudeen, J., P. V. Vipindas, Y. Jesmi, V. Sudheesh, P. M. Parambath, A. Singh, and M. A. Hatha (2020), Nutrient stoichiometry (N:P) controls nitrogen fixation and distribution of diazotrophs in a tropical eutrophic estuary, Marine Pollution Bulletin, 15, 110799, doi:10.1016/j.marpolbul.2019.110799

19. Singh, A., N. Gandhi, and R. Ramesh, (2019), Surplus supply of bioavailable nitrogen through N2 fixation to primary producers in the eastern Arabian Sea during autumn, Continental Shelf Research, 181, 103–110

20. Hermes, J. C., Y. Masumoto, L. Beal, …, A. Singh et al. (2019), A sustained ocean observing system in the Indian Ocean for climate related scientific knowledge and societal needs, Frontiers in Marine Science, 6:355.

21. Suntharalingam, P., L. M. Zamora, H. W. Bange, S. Bikkina, E. Buitenhuis, M. Kanakidou, J. F. Lamarque, A. Landolfi, L. Resplandy, M.M. Sarin, S. Seitzinger, and A. Singh (2019), Anthropogenic nitrogen inputs and impacts on oceanic N2O fluxes in the northern Indian Ocean: The need for an integrated observation and modelling approach, Deep Sea Research II, doi:10.1016/j.dsr2.2019.03.007

22. Kumar, P. K., A. Singh, and R. Ramesh (2018), Controls on δ18O, δD and δ18O-salinity relationship in the northern Indian Ocean, Marine Chemistry, 207, 55-62, doi:10.1016/j.marchem.2018.10.010

23. Kumar, S., P. S. Bhavya, R. Ramesh, G. V. M. Gupta, F. Chiriboga, A. Singh, I. Karunasagar, A. Rai, A. Rehnstam-Holm, L. Edler, and A. Godhe (2018), Nitrogen uptake potential under different temperature-salinity conditions: Implications for nitrogen cycling under climate change scenarios, Marine Environmental Research, doi:10.1016/j.marenvres.2018.09.001

24. Singh, A., L. T. Bach, T. Fischer, H. Hauss, R. Kiko, A. J. Paul, P. Stange, P. Vandromme, and U. Riebesell (2017), Niche construction by non-diazotrophs for N2 fixers in the eastern tropical North Atlantic Ocean, Geophysical Research Letters, 44, doi:10.1002/2017GL074218

25. Baker, A. R., M. Kanakidou, K. Altieri, N. Daskalakis, G. Okin, S. Myriokefalitakis, F. Dentener, M. Uematsu, M M. Sarin, R. Duce, J. Galloway, W. Keene, A. Singh, L. Zamora, J. Lamarque, S. Hsu, S. Rohekar, S., and J. Prospero (2017), Observation-and model-based estimates of particulate dry nitrogen deposition to the oceans, Atmospheric Chemistry and Physics, 17(13), 8189-8210, doi:10.5194/acp-17-8189-2017

26. Kumar, P. K., A. Singh, R. Ramesh and T. Nallathambi T (2017), N2 Fixation in the Eastern Arabian Sea: Probable Role of Heterotrophic Diazotrophs. Front. Mar. Sci., 4:80. doi: 10.3389/fmars.2017.00080

27. Jickells. T., K. Altieri, E. Buitenhuis, A. Baker, D. Capone, R. Duce, F. Dentener, K. Fennel, M. Kanakidou, J. LaRoche, K. Lee, P. Liss, J. Middelburg, K. Moore, G. Okin, A. Oschlies, M. M. Sarin, S. Seitzinger, J. Sharples, A. Singh, P. Suntharalingam, M. Uematsu, and L. Zamora (2017), A reevaluation of the magnitude and impacts of anthropogenic atmospheric nitrogen inputs on the ocean, Global Biogeochemical Cycles, 31(2), 289-305

28. Thajudeen, J., J. Yousuf, V. P. Veetil, S. Varghese, A. Singh, and M. H. Abdulla (2017), Nitrogen fixing bacterial diversity in a tropical estuarine sediments, World Journal of Microbiology and Biotechnology, 33(2), 41

29. Olofsson, M., J. Egardt, A. Singh, and H. Ploug (2016), Inorganic phosphorus enrichments in Baltic Sea water have large effects on growth, carbon fixation, and N2 fixation by Nodularia spumigena. Aquatic Microbial Ecology, 77(2), 111-123

30. Singh, A., Kürten, B., Cedras,  R., Fernandes, M., N. Kumar and 41 authors (2016), Perspectives on future Indian Ocean research from early career scientists, Current Science, 111 (11), 1741-1742

31.  Kahlon, G. K., S. Kumar, A. Rehnstam-Holm, A. Rai, P. S. Bhavya, L. Edler, A. Singh, B. Andersson, I. Karunasagar, R. Ramesh, and A. Godhe (2016), Response of a coastal tropical pelagic microbial community to changed salinity and temperature, Aquatic Microbial Ecology, 77(1), 37-50, doi:10.3354/ame01785

32. Singh, A., S. E. Baer, U. Riebesell, A. C. Martiny, and M. W. Lomas (2015), C:N:P stoichiometry at the Bermuda Atlantic Time-series Study station in the North Atlantic Ocean, Biogeosciences, 12, 6389-6403, doi:10.5194/bg-12-6389-2015

33. Löscher, C. R., M. A. Fischer, S. C. Neulinger, B. Fiedler, M. Philippi, F. Schütte, A. Singh, H. Hauss, J. Karstensen, A. Körtzinger, S. Künzel, and R. A. Schmitz (2015), Hidden biosphere in an oxygen-deficient Atlantic open-ocean eddy: future implications of ocean deoxygenation on primary production in the eastern tropical North Atlantic, Biogeosciences, 12, 7467-7482, doi:10.5194/bg-12-7467-2015

34. Singh, A., and R. Ramesh (2015), Environmental controls on New and Primary Production in the Northern Indian Ocean, Progress in Oceanography, 131, 138-145, doi:10.1016/j.pocean.2014.12.006

35. Singh, A., N. Gandhi, R. Ramesh, and S. Prakash (2015), Role of Cyclonic Eddy in enhancing Primary and New production in the Bay of Bengal, Journal of Sea Research, 97, 5-13, doi:10.1016/j.seares.2014.12.002

36. Singh, A., A. Mohiuddin, R. Ramesh, and S. Raghav (2014), Estimating the Loss of Himalayan Glaciers under Global Warming Using the δ18O-Salinity Relation in the Bay of Bengal, Environmental Science and Technology Letters, 1(5), 249-253, doi:10.1021/ez500076z; (ACS Editors’ Choice Publication, Seawater Survey Traces Loss of Himalayan Glaciers)

37. Singh, A., K. Hårding, H. R. V. Reddy, and A. Godhe (2014), An assessment of Dinophysis blooms in the coastal Arabian Sea, Harmful Algae, 34, 29-35, doi: 10.1016/j.hal.2014.02.006

38. Singh, A., R. Ramesh, and A. Godhe (2014), Inter- and intra-specific carbon and nitrogen assimilation by cultured dinoflagellate and diatom species in an isotopic enrichment culture experiment, Current Science, 106 (6), 867-870

39. Singh, A., M. W. Lomas, and N. R. Bates (2013), Revisiting N2 fixation in the North Atlantic Ocean: Significance of deviations from the Redfield Ratio, atmospheric deposition and climate variability, Deep Sea Research, Part II, 93, 148-158. doi:10.1016/j.dsr2.2013.04.008i

40. Singh, A., N. Gandhi, and R. Ramesh (2012), Contribution of atmospheric nitrogen deposition to new production in the nitrogen limited photic zone of the northern Indian Ocean, Journal of Geophysical Research: Oceans,117 (C6), doi:10.1029/2011JC007737

41. Gandhi, N., A. Singh, S. Prakash, R. Ramesh, Mini Raman, M. S. Sheshshayee, and S. Shetye (2011), First direct N2 fixation measurements during a Trichodesmium bloom in the eastern Arabian Sea, Global Biogeochemical Cycles, 25 (4), doi:10.1029/2010GB003970

42. Thirumalai, K., A. Singh, and R. Ramesh (2011), A MATLABTM code to perform weighted linear regression with (correlated or uncorrelated) errors in bivariate data, Journal of the Geological Society of India, 77, 377-380.

43. Singh, A., and R. Ramesh (2011), Contribution of riverine dissolved inorganic nitrogen flux to new production in the coastal northern Indian Ocean - an assessment, International Journal of Oceanography, vol 2011, doi: 10.1155/2011/983561

44. Singh, A., R. A. Jani, and R. Ramesh (2010), Spatiotemporal variations of the δ18O-salinity relation in the northern Indian Ocean, Deep Sea Research, Part I, 57(11), 1422-1431, doi:10.1016/j.dsr.2010.08.002.

45. Gandhi, N., A. Singh, R. Ramesh, and M. S. Sheshshayee (2010), Nitrogen sources for new production in the NE Indian Ocean, Advances in Geosciences, 24, 55-67.

46. Ramesh, R., and A. Singh (2010), Isotopic fractionation in open systems: application to organic matter decomposition in ocean and land, Current Science, 98(3), 406-411.