Megacities and Large Urban Agglomerations in the Coastal Zone: Interactions Between Atmosphere, Land, and Marine Ecosystems
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Megacities are not only important drivers for socio-economic development but also sources of environmental challenges. Many megacities and large urban agglomerations are located in the coastal zone where land, atmosphere, and ocean meet, posing multiple environmental challenges which we consider here. The atmospheric flow around megacities is complicated by urban heat island effects and topographic flows and sea breezes and influences air pollution and human health. The outflow of polluted air over the ocean perturbs biogeochemical processes. Contaminant inputs can damage downstream coastal zone ecosystem function and resources including fisheries, induce harmful algal blooms and feedback to the atmosphere via marine emissions. The scale of influence of megacities in the coastal zone is hundreds to thousands of kilometers in the atmosphere and tens to hundreds of kilometers in the ocean. We list research needs to further our understanding of coastal megacities with the ultimate aim to improve their environmental management.
KeywordsAir pollution Marine pollution Coastal zone management Deposition Ozone Harmful algal blooms
We thank the International Geosphere–Biosphere Programme (IGBP), the Scientific Committee on Oceanic Research (SCOR), The Surface Ocean and Lower Atmosphere Studies programme (SOLAS), and the International Global Atmospheric Chemistry proect (IGAC) for funding an expert workshop.
- Anderson, D.M., P. Hoagland, Y. Kaoru, and A.W. White. 2000. Estimated annual economic impacts from harmful algal blooms in the United States. Technical Report WHOI-2000-11, Woods Hole Oceanog. Inst.Tech. Rept.Google Scholar
- Brescianini, C., C. Grillo, N. Melchiorre, R. Bertolotto, A. Ferrari, B. Vivaldi, G. Icardi, L. Gramaccioni, et al. 2006. Ostreopsis ovata algal blooms affecting human health in Genova, Italy, 2005 and 2006. Euro Surv., 11:3040.Google Scholar
- Cheng, Y.F., H. Eichler, A. Wiedensohler, J. Heintzenberg, Y.H. Zhang, M. Hu, H. Herrmann, L.M. Zeng, et al. 2006. Mixing state of elemental carbon and non-light-absorbing aerosol components derived from in situ particle optical properties at Xinken in Pearl River Delta of China. Journal of Geophysical Research 111:D20204. doi: 10.1029/2005JD006929.
- Chester, R., G.F. Bradshaw, C.J. Ottley, R.M. Harrison, J.L. Merrett, M.R. Preston, A.R. Rendell, M.M.Kane, and T.D. Jickells. 1993a. The atmospheric distribution of trace metals, trace organics and nutrients over the North Sea. Philosophical Transactions of the Royal Society of London A 343:543–556.CrossRefGoogle Scholar
- Chung, C.E., V. Ramanathan, G. Carmichael, S. Kulkarni, Y. Tang, B. Adhikary, L.R. Leung, and Y. Qian. 2010. Anthropogenic aerosol radiative forcing in Asia derived from regional models with atmospheric and aerosol data assimilation. Atmospheric Chemistry and Physics 10:6007–6024.CrossRefGoogle Scholar
- Church, T.M., J.M. Tramontano, J.R. Scudlark, and S.L. Murray. 1988. Trace metals in the waters of the Delaware estuary. In Ecology and restoration of the Delaware river basin, eds. Majumdar, S.K., E.W.Miller, and L.E. Sage. Philadelphia: The Philadelphia Academy of Sciences.Google Scholar
- Colle, B.A., J.B. Olson, and J.S. Tongue. 2003. Multi season verification of the MM5. Part I: Comparison with the Eta model over the central and eastern United States and impact of MM5 resolution. Weather and Forecasting 18:431–457.Google Scholar
- Collins, W.J. 2009. Global radiative forcing from megacity emissions of long-lived greenhouse gases. Technical Report 09-01, MEGAPOLI Project Scientific Report.Google Scholar
- Doering, U., J. van Aardenne, S. Monni, V. Pagliari, L. Orlandini, and F. San Martin. 2009. CIRCE report D8.1.3 Update of gridded emission inventories, addition of period 1990-2005 and the years 2010, 2015, 2050. Technical report, Project FP6: 6.3—No. 036961—CIRCE.Google Scholar
- Doney, S.C., N. Mahowald, I. Lima, R.A. Feely, F.T. Mackenzie, J.-F. Lamarque, and P.J. Rasch. 2007. Impact of anthropogenic atmospheric nitrogen and sulfur deposition on ocean acidification and the inorganic carbon system. Proceedings of the National Academy of Sciences of the United States of America 104:14580–14585.CrossRefGoogle Scholar
- Duce, R.A., J. LaRoche, K. Altieri, K.R. Arrigo, A.R. Baker, D.G. Capone, S. Cornell, F. Dentener, et al. 2008 Impacts of atmospheric anthropogenic nitrogen on the open ocean. HortScience 320:893–897.Google Scholar
- Freitas, E.D., Christopher M. Rozoff, William R. Cotton , and Pedro L. Silva Dias. 2007. Interactions of an urban heat island and sea-breeze circulations during winter over the metropolitan area of São Paulo, Brazil. Boundary Layer Meteorology 122:43–65.Google Scholar
- Galloway, J.N., A.R. Townsend, J.W. Erisman, M. Bekunda, Z. Cai, J.R. Freney, L.A. Martinelli, S.P. Seitzinger, et al. 2008. Transformation of the nitrogen cycle: Recent trends, questions, and potential solutions. HortScience 320:889–892.Google Scholar
- Gedzelman, S.D., R. Austin, S. Cermak, N. Stefano, S. Partridge, and S. Quesenberry. 2003. Mesoscale aspects of the urban heat island around New York city. Theoretical and Applied Climatology 75:29–42.Google Scholar
- Gentien, P., B. Reguera, H. Yamazaki, L. Fernand, E. Berdalet, and R. Raine. 2008. Harmful algal blooms in stratified systems. Technical Report EOHAB Core Research Project 4, IOC and SCOR, Paris and Newark.Google Scholar
- Hagström, J., E. Granéli, M.O.P. Moreira, and C. Odebrecht. 2011. Domoic acid production and elemental composition of two Pseudo-nitzschia multiseries strains, from the NW and SW Atlantic Ocean, growing in phosphorus- or nitrogen-limited chemostat cultures. Journal of Plankton Research 33:297–308.CrossRefGoogle Scholar
- Hofzumahaus, A., F. Rohrer, K. Lu, B. Bohn, T. Brauers, C.C. Chang, H. Fuchs, F. Holland, et al. 2009. Amplified trace gas removal in the troposphere. HortScience 324:1702–1704.Google Scholar
- Horton, R., and C. Rosenzweig. 2010. Climate risk information. In Climate change adaptation in New York city: Building a risk-management response: New York City Panel on Climate Change, 147–228, Vol. 1196. New York: Annals of the New York Academy of Sciences.Google Scholar
- Hunter, K.A., P.S. Liss, V. Surapipith, F. Dentener, R. Duce, M. Kanakidou, N. Kubilay, N. Mahowald, et al. 2011. Impacts of anthropogenic SOx, NOx and NH3 on acidification of coastal waters and shipping lanes. Geophysical Research Letters 38:L13602. doi: 10.1029/2011GL047720.
- Jickells, T.D. 1998. Nutrient biogeochemistry of the coastal zone. HortScience 281:217–222.Google Scholar
- Kanakidou, M., N. Mihalopoulos, T. Kindap, U. Im, M. Vrekoussis, E. Gerasopoulos, E. Dermitzaki, A. Unal, et al. 2011. Megacities as hot spots of air pollution in the East Mediterranean. Atmospheric Environment 45:1223–1235.Google Scholar
- Küpper, F.C., L.J. Carpenter, G.B. McFiggans, C.J. Palmer, T.J. Waite, E.-M. Boneberg, S. Woitsch, M. Weiller, et al. 2008. Iodide accumulation provides kelp with an inorganic antioxidant impacting atmospheric chemistry. Proceedings of the National Academy of Sciences of the United States of America 105:6954–6958.Google Scholar
- Lawler, M.J., B.D. Finley, W.C. Keene, A.A.P. Pszenny, K.A. Read, R. von Glasow, and E.S. Saltzman. 2009. Pollution-enhanced reactive chlorine chemistry in the eastern tropical Atlantic boundary layer. Geophysical Research Letters 36:L08810. doi: 10.1029/2008GL036666.
- Lu, R., and R.P. Turco. 1996. Ozone distributions over the Los Angeles basin: Three-dimensional simulations with the SMOG model. Atmospheric Environment 24:4155–4176.Google Scholar
- Manley, S.L., N.-Y. Wang, M.L. Walser, and R.J. Cicerone. 2006. Coastal salt marshes as global methyl halide sources from determinations of intrinsic production by marsh plants. Global Biogeochemical Cycles 20:GB3015. doi: 10.1029/2005GB002578.
- Martino, M., G.P. Mills, J. Woeltjen, and P.S. Liss. 2009. A new source of volatile organoiodine compounds in surface seawater. Geophysical Research Letters 36:L01609. doi: 10.1029/2008GL036334.
- McFiggans, G., H. Coe, R. Burgess, J. Allan, M. Cubison, M.R. Alfarra, R. Saunders, A. Saiz-Lopez, et al. 2004. Direct evidence for coastal iodine particles from Laminaria macroalgae—linkage to emissions of molecular iodine. Atmospheric Chemistry and Physics 4:701–713.Google Scholar
- McFiggans, G., C.S.E. Bale, S.M. Ball, J.M. Beames, W.J. Bloss, L.J. Carpenter, J. Dorsey, R. Dunk, et al. 2010. Iodine-mediated coastal particle formation: An overview of the reactive halogens in the marine boundary layer (RHaMBLe) Roscoff coastal study. Atmospheric Chemistry and Physics 10:2975–2999.CrossRefGoogle Scholar
- Meier, M.H.E., R. Feistel, J. Piechura, L. Arneborg, H. Burchard, V. Fiekas, N. Golenko, N. Kuzmina, et al. 2006. Ventiliation of the Baltic Sea deep water: A brief review of present knowledge from observations and models. Oceanologia 48(S):133–164.Google Scholar
- Mestayer, P.G., P. Durand, P. Augustin, S. Bastin, J.M. Bonnefond, B. Bénech, B. Campistron, A. Coppalle, et al. 2005. The urban boundary layer field experiment over Marseille, UBL/CLU-ESCOMPTE: Experimental set-up and first results. Boundary Layer Meteorology 114:315–365.Google Scholar
- Nicholls, R.J., and A. Cazenave. 2010. Sea-level rise and its impact on coastal zones. HortScience 328:1517–1520.Google Scholar
- Nicholls, R.J., S. Hanson, C. Herweijer, N. Patmore, S. Hallegatte, J. Corfee-Morlot, J. Chateau, and R.M. Wood. 2008. Ranking port cities with high exposure and vulnerability to climate extremes: Exposure estimates. Technical report, OECD Environment Working Papers, No. 1, OECD Publishing.Google Scholar
- Osthoff, H.D., J.M. Roberts, A.R. Ravishankara, E.J. Williams, B.M. Lerner, R. Sommariva, T.S. Bates, D. Coffmann, et al. 2008 Unexpectedly high ClNO2 mixing ratios in the polluted subtropical marine boundary layer. Nature Geoscience 1:324–328.Google Scholar
- Parrish, D.D., and T. Zhu. 2009. Clean air for megacities. Science 326:674–675.Google Scholar
- Pullen, J., J. Ching, D. Sailor, W. Thompson, B. Bornstein, and D. Koracin. 2008. Progress towards meeting the challenges of our coastal urban future. The seventh conference on coastal atmospheric and oceanic prediction and processes and the seventh symposium on the urban environment. Bulletin of the American Meteorological Society 89:1727–1731.CrossRefGoogle Scholar
- Queste, B.Y., L. Fernand, T.J. Jickells, and K.J. Heywood. 2012. Spatial extent and historical context of North Sea oxygen depletion in August 2010. Biogeochemistry. doi: 10.1007/s10533-012-9729-9.
- Ramanathan, V., C. Chung, D. Kim, T. Bettge, L. Buja, J.T. Kiehl, W.M. Washington, Q. Fu, et al. 2005. Atmospheric brown clouds: Impacts on South Asian climate and hydrological cycle. Proceedings of the National Academy of Sciences of the United States of America 102:5326–5333.CrossRefGoogle Scholar
- Ramanathan, V., F. Li, M.V. Ramana, P.S. Praveen, D. Kim, C.E. Corrigan, H. Nguyen, E.A. Stone, et al. 2007. Atmospheric brown clouds: Hemispherical and regional variations in long-range transport, absorption, and radiative forcing. Journal of Geophysical Research 112:D22S21. doi: 10.1029/2006JD008124.
- Tie, X., Fuhai Geng, Li Peng, Wei Gao, and Chunsheng Zhao. 2009. Measurement and modeling of O3 variability in Shanghai, China: Application of the WRF-Chem model. Atmospheric Environment 43:4289–4302.Google Scholar
- UN. 2010. World urbanization prospects: The 2009 Revision. Technical Report, United Nations Department of Economic and Social Affairs/Population Division.Google Scholar
- Uno, I., M. Uematsu, Y. Hara, Y.J. He, T. Ohara, A. Mori, T. Kamaya, K. Murano, et al. 2007. Numerical study of the atmospheric input of anthropogenic total nitrate to the marginal seas in the western North Pacific region. Geophysical Research Letters 34:L17817. doi: 10.1029/2007GL030338.
- Uno, I., K. Eguchi, K. Yumimoto, T. Takemura, A. Shimizu, M. Uematsu, Z. Liu, Z. Wang, et al. 2009. Asian dust transported one full circuit around the globe. Nature Geoscience 2:557–560.Google Scholar
- Van Alstyne, K.I. 2008. Ecological and physiological role of dimethylsulponiopropionate and its products in marine macroalgae. In Algal chemical ecology, ed. Amsler, C.D., 173–194. Heidelberg:Springer.Google Scholar
- Yue, D., M. Hu, Z. Wu, Z. Wang, S. Guo, B. Wehner, A. Nowak, P. Achtert, et al. 2009. Characteristics of aerosol size distributions and new particle formation in the summer in Beijing. Journal of Geophysical Research 114:D00G12. doi: 10.1029/2008JD010894.