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MJ

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Hire Dr. Martin J.

Ireland

USD 75 /hr

Independent Marine and Environmental Scientist

Profile Summary

I am an Earth System Scientist with >15 years research expertise at a field-leading UK university. I have extensive extensive experience of geospatial and time-series data analysis, numerical and statistical modelling, and field and laboratory analytical science. I specialise in marine biogeochemistry, particularly in nutrient and carbon cycling in shelf seas. I have extensive experience of knowledge transfer and research impact activity through my leadership of the Marine Knowledge Exchange Network in the UK 2014-2018. I have recently decided to leave academia but wish to continue to apply the skills and knowledge I've gained over my career.

Subject Matter Expertise

• ★ Biogeochemistry
• ★ Environmental Chemistry
• ☆ Carbon Materials
• ☆ Environmental Engineering and Technology
• ☆ Earth & Atmospheric Science
• ☆ Oceanography & Marine Science
• ☆ Climate Science

Services

• Writing
• Research
• Consulting
• Data & AI
• Product Development

Work Experience

Senior Lecturer in marine sciences

Centre for Ocean and Atmospheric Sciences, University of East Anglia

August 2018 - Present

Founder and Director

Marine Knowledge Exchange Network

January 2014 - Present

Senior researcher

Centre for Environment, Fisheries and Aquaculture Science

January 2013 - Present

Lecturer in Marine Sciences

Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia

January 2013 - August 2018

Education

PhD in Marine Biogeochemistry (School of Environmental Sciences)

University of East Anglia

September 2000 - July 2004

Certifications

• Certification details not provided.

Publications

JOURNAL ARTICLE

Rushby, A.J., Johnson, M., Mills, B.J.W., Watson, A.J., Claire, M.W.(2018). Long-Term Planetary Habitability and the Carbonate-Silicate Cycle . Astrobiology. 18. (5). p. 469-480.

Silburn, B., Kröger, S., Parker, E.R., Sivyer, D.B., Hicks, N., Powell, C.F., Johnson, M., Greenwood, N.(2017). Benthic pH gradients across a range of shelf sea sediment types linked to sediment characteristics and seasonal variability . Biogeochemistry. 135. (1-2). p. 69-88.

Legge, O.J., Bakker, D.C.E., Meredith, M.P., Venables, H.J., Brown, P.J., Jones, E.M., Johnson, M.T.(2017). The seasonal cycle of carbonate system processes in Ryder Bay, West Antarctic Peninsula . Deep-Sea Research Part II: Topical Studies in Oceanography. 139. p. 167-180.

Engel, A., Bange, H.W., Cunliffe, M., Burrows, S.M., Friedrichs, G., Galgani, L., Herrmann, H., Hertkorn, N., Johnson, M., Liss, P.S., et al.(2017). The ocean's vital skin: Toward an integrated understanding of the sea surface microlayer . Frontiers in Marine Science. 4. (MAY).

Lin, C.T., Jickells, T.D., Baker, A.R., Marca, A., Johnson, M.T.(2016). Aerosol isotopic ammonium signatures over the remote Atlantic Ocean . Atmospheric Environment. 133. p. 165-169.

Hull, T., Greenwood, N., Kaiser, J., Johnson, M.(2016). Uncertainty and sensitivity in optode-based shelf-sea net community production estimates . Biogeosciences. 13. (4). p. 943-959.

Ostle, C., Johnson, M., Landschützer, P., Schuster, U., Hartman, S., Hull, T., Robinson, C.(2015). Net community production in the North Atlantic Ocean derived from Volunteer Observing Ship data . Global Biogeochemical Cycles. 29. (1). p. 80-95.

Brévière, E.H.G., Bakker, D.C.E., Bange, H.W., Bates, T.S., Bell, T.G., Boyd, P.W., Duce, R.A., Garçon, V., Johnson, M.T., Law, C.S., et al.(2015). Surface ocean-lower atmosphere study: Scientific synthesis and contribution to Earth system science . Anthropocene. 12. p. 54-68.

Legge, O.J., Bakker, D.C.E., Johnson, M.T., Meredith, M.P., Venables, H.J., Brown, P.J., Lee, G.A.(2015). The seasonal cycle of ocean-atmosphere CO<inf>2</inf>flux in Ryder Bay, west Antarctic Peninsula . Geophysical Research Letters. 42. (8). p. 2934-2942.

Paulot, F., Jacob, D.J., Johnson, M.T., Bell, T.G., Baker, A.R., Keene, W.C., Lima, I.D., Doney, S.C., Stock, C.A.(2015). Global oceanic emission of ammonia: Constraints from seawater and atmospheric observations . Global Biogeochemical Cycles. 29. (8). p. 1165-1178.

Yang, M., Beale, R., Liss, P., Johnson, M., Blomquist, B., Nightingale, P.(2014). Air-sea fluxes of oxygenated volatile organic compounds across the Atlantic Ocean . Atmospheric Chemistry and Physics. 14. (14). p. 7499-7517.

Jiao, N., Robinson, C., Azam, F., Thomas, H., Baltar, F., Dang, H., Hardman-Mountford, N.J., Johnson, M., Kirchman, D.L., Koch, B.P., et al.(2014). Corrigendum to "Mechanisms of microbial carbon sequestration in the ocean - Future research directions" published in Biogeosciences, 11, 5285-5306, 2014 . Biogeosciences. 11. (19). p. 5565.

Jiao, N., Robinson, C., Azam, F., Thomas, H., Baltar, F., Dang, H., Hardman-Mountford, N.J., Johnson, M., Kirchman, D.L., Koch, B.P., et al.(2014). Mechanisms of microbial carbon sequestration in the ocean &amp;ndash; Future research directions . Biogeosciences. 11. (19). p. 5285-5306.

Johnson, M.T., Greenwood, N., Sivyer, D.B., Thomson, M., Reeve, A., Weston, K., Jickells, T.D.(2013). Characterising the seasonal cycle of dissolved organic nitrogen using Cefas SmartBuoy high-resolution time-series samples from the southern North Sea . Biogeochemistry. 113. (1-3). p. 23-36.

Lenton, T.M. and Crouch, M. and Johnson, M. and Pires, N. and Dolan, L.(2012). First plants cooled the Ordovician . Nature Geoscience. 5. (2). p. 86-89.

Hughes, C. and Johnson, M. and Von Glasow, R. and Chance, R. and Atkinson, H. and Souster, T. and Lee, G.A. and Clarke, A. and Meredith, M. and Venables, H.J. and Turner, S.M. and Malin, G. and Liss, P.S.(2012). Climate-induced change in biogenic bromine emissions from the Antarctic marine biosphere . Global Biogeochemical Cycles. 26. (3).

Johnson, M.T.(2010). A numerical scheme to calculate temperature and salinity dependent air-water transfer velocities for any gas . Ocean Science. 6. (4). p. 913-932.

Hughes, C. and Kettle, A.J. and Unazi, G.A. and Weston, K. and Jones, M.R. and Johnson, M.T.(2010). Seasonal variations in the concentrations of methyl and ethyl nitrate in a shallow freshwater lake . Limnology and Oceanography. 55. (1). p. 305-314.

Johnson, M.T. and Bell, T.G.(2008). Coupling between dimethylsulfide emissions and the ocean-atmosphere exchange of ammonia . Environmental Chemistry. 5. (4). p. 259-267.

Johnson, M.T., Vaughan, N.E., Goodwin, P., Goldblatt, C., Roudesli, S., Lenton, T.M.(2008). Why NH<inf>3</inf>is not a candidate reagent for ambient CO<inf>2</inf>fixation: A response to "alternative solution to global warming arising from CO<inf>2</inf>Emissions - Partial neutralization of tropospheric H<inf>2</inf>CO<inf>3</inf>with NH<inf>3</inf>" . Environmental Progress. 27. (3). p. 412-417.

Johnson, M.T. and Liss, P.S. and Bell, T.G. and Lesworth, T.J. and Baker, A.R. and Hind, A.J. and Jickells, T.D. and Biswas, K.F. and Woodward, E.M.S. and Gibb, S.W.(2008). Field observations of the ocean-atmosphere exchange of ammonia: Fundamental importance of temperature as revealed by a comparison of high and low latitudes . Global Biogeochemical Cycles. 22. (1).

Bell, T.G. and Johnson, M.T. and Jickells, T.D. and Liss, P.S.(2008). Ammonia/ammonium dissociation coefficient in seawater: A significant numerical correction (Environmental Chemistry (2007) 4 (183-186) DOI:10.1071/EN07032) . Environmental Chemistry. 5. (3).

Bell, T.G., Johnson, M.T., Jickells, T.D., Liss, P.S.(2007). Ammonia/ammonium dissociation coefficient in seawater: A significant numerical correction . Environmental Chemistry. 4. (3). p. 183-186.

Johnson, M. and Sanders, R. and Avgoustidi, V. and Lucas, M. and Brown, L. and Hansell, D. and Moore, M. and Gibb, S. and Liss, P. and Jickells, T.(2007). Ammonium accumulation during a silicate-limited diatom bloom indicates the potential for ammonia emission events . Marine Chemistry. 106. (1-2 SPEC. ISS.). p. 63-75.

BOOK

Liss, P.S., Johnson, M.T.(2014). Ocean-atmosphere interactions of gases and particles . Ocean-Atmosphere Interactions of Gases and Particles. p. 1-315.

Liss, P.S., Sim&#243;, M.T., Johnson, M.T.(2014). Preface . Ocean-Atmosphere Interactions of Gases and Particles. p. v-vi.

Garbe, C.S., Rutgersson, A., Boutin, J., de Leeuw, G., Delille, B., Fairall, C.W., Gruber, N., Hare, J., Ho, D.T., Johnson, M.T., et al.(2014). Transfer across the air-sea interface . Ocean-Atmosphere Interactions of Gases and Particles. p. 55-112.

Liss, P.S., Marandino, C.A., Dahl, E.E., Helmig, D., Hintsa, E.J., Hughes, C., Johnson, M.T., Moore, R.M., Plane, J.M.C., Quack, B., et al.(2014). Short-lived trace gases in the surface ocean and the atmosphere . Ocean-Atmosphere Interactions of Gases and Particles. p. 1-54.

Beale, R., Johnson, M.T., Liss, P.S., Nightingale, P.D.(2013). Air-Sea Exchange of Marine Trace Gases . Treatise on Geochemistry: Second Edition. 8. p. 53-92.