Andy’s, like, whatever  pages
Pubs ... but not of the alcoholic variety ...
Guarenteed not too dull to read!
The geological record of ocean acidification
(All you ever wanted to know about the marine carbon cycle and were afraid to ask.)
In the oven (in review / revision)
no PDF File   Jones, N. S., A. Ridgwell, and E. J. Hendy, Evaluation of coral reef carbonate production models at a global scale, Biogeosciences Discuss. 11 12895-12936 (2014). [link]
Baking (accepted / in press)
no PDF File   Goodwin, P., R. G. Williams, and A. Ridgwell, Sensitivity of global warming to carbon emissions due to ocean heating and carbon drawdown, Nature Geoscience (in press).
no PDF File   Cui, Y., L. R. Kump, and A. Ridgwell, Spatial and temporal patterns of ocean acidification during the end-Permian mass extinction -- an Earth system model evaluation, in: Volcanism and Global Environmental Change Eds. Schmidt, A., K. E. Fristad, and L. T. Elkins-Tanton, CUP (in press).
Toasted teacakes (2014)
no PDF File   John, E. H., J. Wilson, P. N. Pearson, and A. Ridgwell, Temperature-dependent remineralisation and carbon cycling in the warm Eocene oceans, PPP 413, 158-166 (2014).
no PDF File   Ridgwell, A., and S. Arndt, Why Dissolved Organics Matter: DOC in Ancient Oceans and Past Climate Change, in: Biogeochemistry of Marine Dissolved Organic Matter Eds. Hansell, D. A., and C. A. Carlson, Elsevier (2014).
no PDF File   De'ath, R., J. L. Wadham, F. Monteiro, A. M. Le Brocq, M. Tranter, A. Ridgwell, S. Dutkiewicz, and R. Raiswell, Antarctic Ice Sheet fertilises the Southern Ocean, Biogeosciences 11 2635-2643 (2014). [PDF link]
PDF link   Rae, J. W. B., M. Sarnthein, G. L. Foster, A. Ridgwell, P. M. Grootes, and T. Elliott, Deep water formation in the North Pacific and deglacial CO2 rise, Paleoceanography 29, doi:10.1002/2013PA002570 (2014). [PDF link]
no PDF File   Zeebe, R. E., G. R. Dickens, A. Ridgwell, A. Sluijs, and E. Thomas, Onset of carbon isotope excursion at the Paleocene-Eocene thermal maximum took millennia, not 13 years, PNAS 111, E1062–E1063 (2014).
no PDF File   Sánchez-Baracaldo, P., A. Ridgwell, and J. A. Raven, A Neoproterozoic Revolution in the Marine Nitrogen Cycle, Current Biology 24, 652–657 (2014).
no PDF File   Wood, S., C. B. Paris, A. Ridgwell, and E. J. Hendy, Modeling dispersal and connectivity of broadcast spawning corals at the global scale, Global Ecology and Biogeography 23, 1-11 (2014)
Hot cakes! (2013)
no PDF File   Kirtland Turner, S., and A. Ridgwell, Recovering the true size of an Eocene hyperthermal from the marine sedimentary record, Paleoceanography 28, 700-712 (2013).
no PDF File   Cui, Y., L. R. Kump, and A. Ridgwell, Initial assessment on the carbon emission rate and climatic consequences during the end-Permian mass extinction, Palaeogeography, Palaeoclimatology, Palaeoecology 389, 128–136 (2013).
no PDF File   Couce, E., A. Ridgwell, and E. J. Hendy, Future habitat suitability for coral reef ecosystems under global warming and ocean acidification, Global Change Biology DOI: 10.1111/gcb.12335 (2013). [LINK]
no PDF File   Dunkley Jones, T., D. L. Lunt, D. N. Schmidt, A. Ridgwell, A. Sluijs, P. J. Valdes, and M. Maslin, Climate model and proxy data constraints on ocean warming across the Paleocene-Eocene Thermal Maximum, Earth-Science Reviews 125 123–145 (2013).
no PDF File   Zirkfeld, K., et al., A. Ridgwell, et al., Long-term Climate Change Commitment and Reversibility: An EMIC Intercomparison, Journal of Climate 26, 5782–580 (2013).
no PDF File   Colbourn, G., A. Ridgwell, and T. M. Lenton, The Rock Geochemical Model (RokGeM) v0.9, Geosci. Model Dev. 6, 1543-1573, doi:10.5194/gmd-6-1543-2013 (2013). [link]
no PDF File   Norris, R. D., S. Kirtland Turner, P. M. Hull, and A. Ridgwell, Marine Ecosystem Responses to Cenozoic Global Change, Science 341, 492-498 (2013).
no PDF File   Foster, L. C., D. N. Schmidt, E. Thomas, S. Arndt, and A. Ridgwell, Surviving rapid climate change in the deep-sea during the Paleogene hyperthermals, PNAS 110, 9273–9276 (2013).
no PDF File   Hunter, S. J., D. S. Goldobin, A. M. Haywood, A. Ridgwell, and J. G. Rees, Sensitivity of the global submarine hydrate inventory to scenarios of future climate change, EPSL 367, 105–115 (2013).
PDF File   Couce, E., P. J. Irvine, L. J. Gregorie, A. Ridgwell, and E. J. Hendy, Tropical coral reef habitat in a geoengineered, high-CO2 world, GRL 40, doi:10.1002/grl.50340 (2013). [PDF file of accepted MS (2474 kB)]
no PDF File   Eby, M., et al., A. Ridgwell, et al., Historical and idealized climate model experiments: an intercomparison of Earth system models of intermediate complexity, Clim. Past 9, 1111-1140 (2013). [link]
no PDF File   Holden, P. B., N. R. Edwards, S. A. Muller, K. I. C. Oliver, R. M. De'ath, and A. Ridgwell, Controls on the spatial distribution of oceanic δ13CDIC, Biogeosciences 10, 1815-1833 (2013). [link]
no PDF File   Wadham, J. L., R. De'Ath, F. M. Monteiro, M. Tranter, A. Ridgwell, R. Raiswell and S. Tulaczyk, The potential role of the Antarctic Ice Sheet in global biogeochemical cycles, Earth and Environmental Science Transactions of the Royal Society of Edinburgh 104, 1-13 (2013). [DOI]
no PDF File   Lunt, D.J., H. Elderfield, R. Pancost, A. Ridgwell, G.L. Foster, A. Haywood, J. Kiehl, N. Sagoo, C. Shields, E.J. Stone, and P. Valdes, Warm climates of the past - a lesson for the future?, Phil. Trans. R. Soc. A. 371, 20130146 (2013). [DOI]
Warm muffins (2012)
no PDF File   Monteiro, F. M., R. D. Pancost, A. Ridgwell, and Y. Donnadieu, Nutrients as the dominant control on the extent of anoxia and euxinia across the Cenomanian-Turonian oceanic anoxic event (OAE2): Model-data comparison, Paleoceanography, DOI: 10.1029/2012PA002351 (2012).
(Highlighted in Nature Geoscience)
no PDF File   Wilson, J. D., S. Barker, and A. Ridgwell, Assessment of the spatial variability in particulate organic matter and mineral sinking fuxes in the ocean interior: implications for the ballast hypothesis, GBC 26, doi:10.1029/2012GB004398 (2012).
no PDF File   Williams, R. G., P. Goodwin, A. Ridgwell, and P. L. Woodworth, Steric sea level rise from cumulative carbon emissions, GRL 39, L19715 http://dx.doi.org/10.1029/2012GL052771 (2012).
no PDF File   Palike, H., M. W. Lyle, H. Nishi, I. Raffi, A. Ridgwell, et al., A Cenozoic record of the equatorial Pacific carbonate compensation depth, Nature 488, 609–614 (2012).
no PDF File   Wadham, J. M., S. Arndt, S. Tulaczyk, M. Stibal, M. Tranter, J. Telling, G. P. Lis, E. Lawson, A. Ridgwell, et al., Potential methane reservoirs beneath Antarctica, Nature 488, 633–637 (2012).
no PDF File   Couce, E., A. Ridgwell, and E. Hendy, Environmental controls on the global distribution of shallow-water coral reefs, Journal of Biogeography 39, 1508–1523 (2012).
no PDF File   Hönisch, B., A. Ridgwell, et al., The Geological Record of Ocean Acidification, Science 335, 1058-1063 (2012).
no PDF File   Barker, S., and A. Ridgwell, Ocean Acidification, Nature Education Knowledge 3, 21 (2012). [link]
no PDF File   Ridgwell, A., M. Maslin, and J. O. Kaplan, Flooding of the continental shelves as a contributor to deglacial CH4 rise, Journal of Quaternary Science DOI: 10.1002/jqs.2568 (2012).
Cold cupcakes (2011)
no PDF File   Irvine, P. J., A. Ridgwell, and D. J. Lunt, Climatic Impacts of Surface Albedo Geoengineering, JGR 116, doi:10.1029/2011JD016281 (2011).
no PDF File   Lunt, D. L., A. J. Ridgwell, et al., A model for orbital pacing of methane hydrate destabilization during the Palaeogene, Nature Geoscience, doi:10.1038/ngeo1266 (2011).
no PDF File   Ridgwell, A., Evolution of the ocean’s “biological pump”, PNAS 108, 16485–16486 (2011).
no PDF File   Ridgwell, A., T. J. Rodengen, and K. E. Kohfeld, Geographical variations in the effectiveness and side effects of deep ocean carbon sequestration, GRL 38, L17610, doi:10.1029/2011GL048423 (2011).
no PDF File   Cui, Y., L. R. Kump, A. J. Ridgwell, et al., Slow release of fossil carbon during the Paleocene-Eocene Thermal Maximum, Nature Geoscience, DOI: 10.1038/NGEO1179 (2011).
no PDF File   Haywood, A. M., A. Ridgwell, et al., Are there pre-Quaternary geological analogues for a future greenhouse warming?, Phil. Trans. R. Soc. A 369, 933-956 (2011).
Stale buns (2010)
no PDF File   Irvine, P. J., A. Ridgwell, and D. J. Lunt, Assessing the Regional Disparities in Geoengineering Impacts, GRL 37, L18702, doi:10.1029/2010GL044447 (2010).
no PDF File   Lunt, D. J., P. J. Valdes, T. Dunkley-Jones, A. Ridgwell, et al., CO2 driven ocean circulation changes as an amplifier of PETM hydrate destabilization, Geology 38, 875-878 (2010).
no PDF File   Matsumoto, K., K. Tokos, and A. Ridgwell, Characterizing postindustrial changes in the natural ocean carbon cycle in an Earth system model, Tellus 62B, 296–313 (2010).
no PDF File   Turley, C., M. Eby, A. J. Ridgwell, D. N. Schmidt, H. S. Findlay, et al., The Societal Challenge of Ocean Acidification, Marine Pollution Bulletin 60, 787-792 (2010).
no PDF File   Goodwin, P., and A. Ridgwell, Ocean-atmosphere partitioning of anthropogenic carbon dioxide on multimillennial timescales, Global Biogeochem. Cycles 24, GB2014, doi:10.1029/2008GB003449, 2010.
no PDF File   Maslin, M., M. Owen, R. Betts, S. Day, T. Dunkley Jones, and A. Ridgwell, Gas hydrates: past and future geohazard?, Phil. Trans. R. Soc. A 368, 2369-2393, doi:10.1098/rsta.2010.0065, 2010.
no PDF File   Dunkley Jones, T., A. Ridgwell, D. J. Lunt, M. A. Maslin, D. N. Schmidt, and P. J. Valdes, A Palaeogene perspective on climate sensitivity and methane hydrate instability, Phil. Trans. R. Soc. A 368, 2395-2415, doi:10.1098/rsta.2010.0053, 2010.
no PDF File   Ridgwell, A., and D. N. Schmidt, Past constraints on the vulnerability of marine calcifiers to massive CO2 release, Nature Goescience, doi:10.1038/ngeo755, 2010.
Mouldy bread
2009
no PDF File   Kump, L. R., T. J. Bralower, and A. Ridgwell, Ocean Acidification in Deep Time, Oceanography 22, 94-107, 2009.
no PDF File   Ridgwell, A. , The Global Dust Cycle, in Surface Ocean--Lower Atmospheres Processes, Eds. C. Le Quéré and E. S. Saltzman, AGU Geophysical Monograph Series, Volume 187, 350 pp.
no PDF File   Kohfeld, K. E., and A. Ridgwell, Glacial-interglacial variability in atmospheric CO2, in Surface Ocean--Lower Atmospheres Processes, Eds. C. Le Quéré and E. S. Saltzman, AGU Geophysical Monograph Series, Volume 187, 350 pp.
no PDF File   Singarayer, J. S., A. Ridgwell, and P. Irvine, Assessing the benefits of crop albedo bio-geoengineering, Environ. Res. Lett. 4, doi:10.1088/1748-9326/4/4/045110 (2009). [link]
no PDF File   Irvine, P. J., D. J. Lunt, E. J. Stone, and A. Ridgwell, Fate of the Greenland Ice Sheet in a geoengineered, high CO2 world, Environ. Res. Lett. 4, doi:10.1088/1748-9326/4/4/045109 (2009). [link]
no PDF File   Ridgwell, A., and P. J. Valdes, Climate and climate change, Current Biology 19, R563-R566 (2009). [link]
PDF File   Irvine, P., and A. Ridgwell, 'Geoengineering' -- taking control of our planet's climate, Science Progress 92, 139-162 (2009). [PDF file (1743 kB)]
no PDF File   Archer, D., M. Eby, V. Brovkin, A. Ridgwell, et al., Atmospheric lifetime of fossil-fuel carbon dioxide, Annual Reviews of Earth and Planetary Sciences 37, 117-134 (2009).
no PDF File   Ridgwell, A., Schmidt, D. N., Turley, C., Brownlee, C., Maldonado, M. T., Tortell, P., and Young, J. R., From laboratory manipulations to Earth system models: scaling calcification impacts of ocean acidification, Biogeosciences 6, 2611-2623 (2009). [link]
no PDF File   Ridgwell, A., J. S. Singarayer, A. M. Hetherington, and P. Valdes, Tackling regional climate change by leaf albedo bio-geoengineering, Current Biology 19, doi:10.1016/j.cub.2008.12.025 (2009).
(also see: Nature News)
no PDF File   Goodwin, P., R. G. Williams, A. Ridgwell, and M. J. Follows, Climate sensitivity to the carbon cycle modulated by past and future changes in ocean chemistry, Nature Geoscience, doi:10.1038/ngeo416 (2009).
no PDF File   Cao, L., M. Eby, A. Ridgwell, et al., The role of ocean transport in the uptake of anthropogenic CO2, Biogeosciences 6, 375-390 (2009). [link]

2008
no PDF File   Meyer, K. M., L. R. Kump, and A. Ridgwell, Biogeochemical controls on photic-zone euxinia during the end-Permian mass extinction, Geology 36, 747-750 (2008).
no PDF File   Chikamoto, M. O., K. Matsumoto, and A. Ridgwell, Response of deep-sea CaCO3 sedimentation to Atlantic meridional overturning circulation shutdown, JGR 113, G03017, doi:10.1029/2007JG000669 (2008).
no PDF File   Singaraye, J. S., D. A. Richards A. Ridgwell, P. J. Valdes, W. E. N. Austin, and J. W. Beck, An oceanic origin for the increase of atmospheric radiocarbon during the Younger Dryas, GRL 35, L14707, doi:10.1029/2008GL034074 (2008).
PDF File   Lunt, D. J., A. Ridgwell, P. J. Valdes, and A. Seale, Sunshade World.: a fully coupled GCM evaluation of the climatic impacts of geoengineering, GRL 35, L12710, doi:10.1029/2008GL033674 (2008). [PDF file (1086 kB)]
no PDF File   Panchuk, K., A. Ridgwell, and L. R. Kump, Sedimentary response to Paleocene Eocene Thermal Maximum carbon release: A model-data comparison, Geology 36, 315-318 (2008).
(Highlighted in Nature)

2007
PDF File   Ridgwell, A., Interpreting transient carbonate compensation depth changes by marine sediment core modeling, Paleoceanography 22, PA4102, doi:10.1029/2006PA001372 (2007). [PDF file (1023 kB)]
PDF File   'Caldeira, K., ..., A. Ridgwell, et al., Comment on 'Modern-age buildup of CO2 and its effects on seawater acidity and salinity' by Hugo A. Loaiciga, GRL 34, doi:10.1029/ 2006GL027288 (2007). [PDF file (79 kB)]
PDF File   Ridgwell, A., and K. E. Kohfeld, Dust in the Earth system: The biogeochemical linking of land, air, and sea, in Advances in Earth Science, Eds. Sammonds, P. R., and J. M. T. Thompson, Imperial College Press (2007). [PDF file (779 kB)]
PDF File   Ridgwell, A., Application of sediment core modelling to interpreting the glacial-interglacial record of Southern Ocean silica cycling, Clim. Past 3, 387-396 (2007). [PDF file (428 kB)]
PDF File   Ridgwell, A., I. Zondervan, J. Hargreaves, J. Bijma, and T. Lenton, Assessing the potential long-term increase of oceanic fossil fuel CO2 uptake due to 'CO2-calcification feedback', Biogeosciences 4, 481-492 (2007). [PDF file (997 kB)]
(Highlighted in Science)
PDF File   Ridgwell, A., and J. Hargreaves, Regulation of atmospheric CO2 by deep-sea sediments in an Earth System Model, Global Biogeochemical Cycles 21, doi:10.1029/2006GB002764 (2007). [PDF file (1,935 kB)]
PDF File   Ridgwell, A., J. Hargreaves, N. Edwards, J. Annan, T. Lenton, R. Marsh, A. Yool, and A. Watson, Marine geochemical data assimilation in an efficient Earth System Model of global biogeochemical cycling, Biogeosciences 4, 87-104 (2007). [PDF file (824 kB)]
PDF File   Ridgwell, A., and U. Edwards, Geological Carbon Sinks, in Greenhouse Gas Sinks, Eds. Reay, D., N. Hewitt, J. Grace, and, K. Smith, 2007. [PDF file (978 kB)]

2006
no PDF File   Lenton, T. M., M. S. Williamson, N. R. Edwards, R. J. Marsh, A. R. Price, A. J. Ridgwell, J. G. Shepherd, S. J. Cox, and the GENIE team, Millennial timescale carbon cycle and climate change in an efficient Earth system model, Climate Dynamics 26, doi:10.1007/s00382-006-0109-9 (2006).

2005
no PDF File   Cameron, D. R., T. M. Lenton, A. J. Ridgwell, J. G. Shepherd, R. J. Marsh, and the GENIE team, A factorial analysis of the marine carbon cycle controls on atmospheric CO2, GBC 19, doi:10.1029/2005GB002489 (2005). [PDF file (1024 kB)]
PDF File   Maslin, M. A., and A. J. Ridgwell, Mid-Pleistocene Revolution and the 'eccentricity myth', in Early-Middle Pleistocene transitions: the land-ocean evidence, Eds. Head, M. J., and P. L. Gibbard, Geological Society, London, Special Publications, 2005. [PDF file (767 kB)]
no PDF File   Jickells, T. D., Z. S. An, K. K. Andersen, A. R. Baker, G. Bergametti, N. Brooks, Cao J. J., P. W. Boyd, R. A. Duce, K. A. Hunter, H. Kawahata, N. Kubilay, J. laRoche, P. S. Liss, N. Mahowald, J. M. Prospero, A. J. Ridgwell, I. Tegen, and R. Torres, Global Iron Connections Between Desert Dust, Ocean Biogeochemistry and Climate, Science, 308, p. 67 (2005).
PDF File   Ridgwell, A., and R. E. Zeebe, The role of the global carbonate cycle in the regulation and evolution of the Earth system, EPSL 234, 299-315 (2005). [PDF file (1132 kB)]
PDF File   Ridgwell, A., A Mid Mesozoic Revolution in the regulation of ocean chemistry, Marine Geology 217, 339-357 (2005). [PDF file (452 kB)]

2004
PDF File   Ridgwell, A. J., and M. J. Kennedy, Secular changes in the importance of neritic carbonate deposition as a control on the magnitude and stability of Neoproterozoic ice ages, in: The Extreme Proterozoic: Geology, Geochemistry, and Climate, Eds. Jenkins, G., et al., Geophysical Monograph Series Volume 146, American Geophysical Union, Washington DC (2004). [PDF file (732 kB)]

2003
PDF File   Ridgwell, A. J., M. J. Kennedy, and K. Caldeira, Carbonate deposition, climate stability, and Neoproterozoic ice ages, Science, 302, 859-862 (2003). [link to Science].
(With a Comment piece in Science)
PDF File   Ridgwell, A. J., A. J. Watson, M. A. Maslin, J. O. Kaplan, Implications of coral reef buildup for the controls on atmospheric CO2 since the Last Glacial Maximum, Paleoceanography, 18, doi:10.1029/2003PA000893 (2003). [PDF file (418 kB)]
PDF File   Ridgwell, A. J., Implications of the glacial CO2 ‘iron hypothesis‘ for Quaternary climate change, Geochem. Geophys. Geosyst., 4, 1076, doi:10.1029/2003GC000563 (2003). [PDF file (346 kB)]
PDF File   Ridgwell, A. J., An end to the ‘rain ratio’ reign? Geochem. Geophys. Geosyst., 4, 1051, doi:10.1029/2003GC000512 (2003). [PDF file (249 kB)]

2002
PDF File   Ridgwell, A. J., Dust in the Earth system: The biogeochemical linking of land, air, and sea, Philosophical Transactions of the Royal Society A 360, 2905-2924, 2002. [PDF file (1664 kB)]
PDF File   Ridgwell, A. J., and A. J. Watson, Feedback between aeolian dust, climate and atmospheric CO2 in glacial time, Paleoceanography 17, 10.1029/2001PA000729, 2002. [PDF file (1303 kB)]
PDF File   Ridgwell, A. J., A. J. Watson, and D. A. Archer, Modelling the response of the oceanic Si inventory to perturbation, and consequences for atmospheric CO2, Global Biogeochemical Cycles 16, 10.1029/2002GB001877, 2002. [PDF file (793 kB)]
PDF File   Ridgwell, A. J., Maslin, M. A. & Watson, A. J., Reduced effectiveness of terrestrial carbon sequestration due to an antagonistic response of ocean productivity, Geophysical Research Letters 29, 10.1029/2001GL014304, 2002. [PDF file (537 kB)]
(Highlighted in Science)

2001
PDF File   Ridgwell, A. J., Glacial-interglacial perturbations in the global carbon cycle, PhD thesis, 134 pp., Univ. of East Anglia at Norwich, UK, March 2001. [PDF - 7.4 MB]
  Also avaliable: thesis broken down into seperate chapters [PDF - various sizes], and including the Appendix V data.

2000
PDF File   Ridgwell, A. J., Climatic effect of Southern Ocean Fe fertilization: Is the jury still out?, Geochem. Geophys. Geosys. 1, 2000. [PDF file (248kB)]
PDF File   Watson, A. J., D. C. E. Bakker, A. J. Ridgwell, P. W. Boyd, and C. S. Law, Effect of iron supply on Southern Ocean CO2 uptake and implications for glacial atmospheric CO2, Nature 407 730-733, 2000. [PDF file (1.4 MB)]

1999
PDF File   Ridgwell, A. J., A. J. Watson, and M E. Raymo, Is the spectral signature of the 100 kyr glacial cycle consistent with a Milankovitch origin?, Paleoceanography 14, 437-440, 1999. [PDF file (95 kB)]
PDF File   Ridgwell, A. J., S. J. Marshall, and K. Gregson, Consumption of atmospheric methane by soils: A process-based model, Global Biogeochemical Cycles 13, 59-70, 1999. [PDF file (772 kB)]

Late Permian
PDF File   Salje, E. K. H., A. Ridgwell, B. Gutter, B. Wruck, M. T. Dove, and G. Dolino, On the displacive character of the phase transition in quartz: A hard-mode spectroscopy study, J. Phys.: Condens. Matter 4, 571-577, 1992.
Articles and pop-science
PDF File   Andy Ridgwell, Global warming, in: The Seventy Great Mysteries of the Natural World, Eds. Benton, M. J., Thames & Hudson, London, p. 257-261 (2008). [PDF file (201 kB)]
PDF File   Andy Ridgwell, What will Earth's future climate look like?, in: The Seventy Great Mysteries of the Natural World, Eds. Benton, M. J., Thames & Hudson, London, p. 262-265 (2008). [PDF file (293 kB)]
PDF File   Andy Ridgwell, Anti-freeze for snowball Earth, Planet Earth winter, 2003. [PDF file (420 kB)]
PDF File   Andy Ridgwell, Planète poussiéreuse, planète heureuse!, Met Mar, no. 200, pages 24-25, 2003.
PDF File   Andy Ridgwell, A dirty planet is a happy planet, The Marine Observer 73, no. 359, pages 25-27, 2003.
PDF File   Andy Ridgwell, The role of feedbacks in the Earth System: Past changes in dust and iron fertilization of the ocean, IGBP 'Global Change' Newsletter no. 51, 2-5, 2002. [PDF file (179 kB)]
PDF File   Andy Ridgwell, The 'inconvenient ocean' - Undesirable consequences of terrestrial carbon sequestration, Ocean Challenge 12, 28-32, 2002. [PDF file (970 kB)]
PDF File   Andy Ridgwell, A dirty planet is a happy planet, Planet Earth summer, 2002. [PDF file (328 kB)]
The cutting-room floor (unpublished stuff)