Abstract
Climate change due to anthropogenic forcing through escalating greenhouse gas emissions and destruction of carbon sinks by deforestation is leading to floods and droughts affecting agriculture production. Global warming induces steric as well as eustatic rise in sea-level, by thermal expansion and addition of ice-melt water, respectively. Although the IPCC (2007) estimated a maximum possible sea-level rise of about 59 cm, more recent estimates show a global average rise of ≥1 m by the 2100 AD. The low-lying coastal zones are more vulnerable to rising sea levels as they face submergence or saltwater intrusion which affects the agriculture activities. Geomatics-based models on the possible impact of the predicted sea-level rise on coastal agriculture are necessary to initiate appropriate mitigation plans. The present study is an attempt in this direction taking the Andhra Pradesh (AP) coast as an example. The land use / land cover of the AP coast was mapped through the interpretation of IRS-P6 LISS III imagery from 2008. SRTM digital elevation models coupled with landform evidences have been used to interpolate contours at 0.5 m interval, although highly approximate, for the entire coastal region. If the sea level rises by 1.0 m, about 4040 km2 area including the present intertidal wetlands as well as the land between the present and future high tide lines would be affected along the entire 1030-km-long AP coast displacing about 1.67 million inhabitants and their economic activities, in about 351 revenue villages. The low-lying Krishna-Godavari delta region in the central part of the AP coast would be the worst affected zone as 2205 km2 of its area including about 1593 km2 under various types of agricultural activities is lying within the future high tide limit of 2.5 m elevation.
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References
Ahn, J., & Brook, E. J. (2009). Atmospheric CO2 and climate on millennial time scales during the last glacial period. Science, 322, 83–85.
Alexander, D., & Nasheed, M. (2009). Climate: rich and poor must work together, http://www.thehindu.com/2009/11/11/stories/2009111155650900.htm. Accessed 08 April 2008.
Allen, J. C., & Komar, P. D. (2006). Climate controls on US west coast erosion processes. Journal of Coastal Research, 22, 511–529.
Baskaran, R. (2004). Coastal erosion. Current Science, 86, 25.
Dash, S. K., & Hunt, J. C. R. (2007). Variability of climate change in India. Current Science, 93, 782–788.
Finerin, D. (2009), http://www.reuters.com/article/latestCrisis/idUSL13885723. Accessed 08 April 2011
Ghosh, B. (2002). Numerical modeling of saltwater intrusion due to human activities and sea level change in the Godavari delta, India. Hydrological Sciences Journal, 47, S67–S80.
Goodwin, P., Williams, R. G., Ridgwell, A., & Follows, M. J. (2009). Climate sensitivity to the carbon cycle modulated by past and future changes in ocean chemistry. Nature Geoscience, 2, 145–150.
Hema Malini, B., & Nageswara Rao, K. (2004). Coastal erosion and habitat loss along the Godavari delta front—a fallout of dam construction (?). Current Science, 87, 1232–1236.
Horisch, B., Hemming, N. G., Archer, D., Siddall, M., & McManus, J. F. (2009). Atmospheric carbon dioxide concentration across the mid-pleistocene transition. Science, 324, 1551–1554.
IPCC (2007) Summary for Policymakers. In: Soloman SD, Manning QM, Chen Z, Miller HL (eds) Climate Change: the Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change Cambridge University Press, Cambridge, pp. 1–18
Meehl, G. A., Washington, W. M., Collins, W. D., Arblaster, J. M., Hu, A., Buja, L. E., et al. (2005). How much more global warming and sea level rise? Science, 307, 1769–1772.
Milne, G. A., Gehrels, W. R., Hughes, C. W., & Tamisiea, M. E. (2009). Identifying the causes of sea-level rise. Nature Geoscience, 2, 471–478.
Mondal, N. C., Singh, V. S., Saxena, V. K., & Prasad, R. K. (2008). Improvement of groundwater quality due to freshwater ingress in Potharlanka Island, Krishna Delta, India. Environmental Geology, 55, 595–603.
Mondal, N. C., Singh, V. S., Puranik, S. C., & Singh, V. P. (2010). Trace element concentration in groundwater of Pesarlanka Island, Krishna Delta, India. Environmental Monitoring and Assessment, 163, 215–227.
Nageswara Rao, K., Subraelu, P., Venkateswara Rao, T., Hema Malini, B., Ratheesh, R., Bhattacharya, S., et al. (2008). Sea-level rise and coastal vulnerability: an assessment of Andhra Pradesh coast. India, Journal of Coastal Conservation, 12, 195–207.
Nageswara Rao, K., Subraelu, P., Naga Kumar, K. Ch. V., Demudu, G., Hema Malini, B., & Rajawat, A. S. (2010). Impacts of sediment retention by dams on delta shoreline recession: evidences from the Krishna and Godavari deltas. India, Earth Surface Processes and Landforms, 35, 817–827.
Pendleton, E. A., Thieler, E. R., & Williams, S. J. (2004). Coastal vulnerability assessment of Cape Hettaras National Seashore (CAHA) to sea level rise. USGS Open File Report 2004–1064, http://pubs.usgs.gov/of/2004/1064/images/pdf/caha.pdf. Accessed 08 April 2011.
Pirazzoli, P. A. (1996). Sea-level changes: the last 20,000 years. Chichester: Wiley.
Pye, K., & Blott, S. J. (2006). Coastal processes and morphological change in the Dunwich—Sizewell area, Suffolk, UK. 2006. Journal of Coastal Research, 22, 453–473.
Rahmstorf, S. (2010). A new view on sea level rise. Nature Reports Climate Change. doi:10.1038/climate.2010.29.
Saxena, V. K., Mondal, N. C., & Singh, V. S. (2004). Identification of seawater ingress using strontium and boron in Krishna delta, India. Current Science, 86, 586–590.
Shekhar, M. S., Chand, H., Kumar, S., Srinivasan, K., & Ganju, A. (2010). Climate change studies in the western Himalaya. Annals of Glaciology, 51, 105–112.
Smith, J. B., Stephen, H. S., Oppenheimer, M., Yohe, G. W., Hare, W., et al. (2009). Assessing dangerous climate change through an update of the Intergovernmental Panel on Climate Change (IPCC) “reasons for concern”. Proceedings of the National Academy of Sciences of the United States of America, 106, 4133–4137.
Strohecker, K. (2008). World sea levels to rise 1.5 m by 2100: scientists, a Newscientist news service and Reuters publication. http://www.enn.com/wildlife/article/34702. Accessed 08 April 2011.
Unnikrishnan, A. S., & Shankar, D. (2007). Are sea-level-rise trends along the coasts of the north Indian Ocean consistent with global estimates? Global Planet Change, 57, 301–307.
Unnikrishnan, A. S., Rup Kumar, K., Fernandes, S. E., Michael, G. S., & Patwardhan, S. K. (2006). Sea level changes along the Indian coast: observations and projections. Current Science, 90, 362–368.
Vermeer, M., & Rahmstorf, S. (2009). Global sea level linked to global temperature. Proceedings of the National Academy of Sciences of the United States of America, 106, 21527–21532.
Wigley, T. M. L. (1983). The pre-industrial carbon dioxide level. Climate Change, 5, 315–320.
Wu, S., Yarnal, B., & Fisher, A. (2002). Vulnerability of coastal communities to sea-level rise: a case study of cape may county, New Jersey, USA. Climate Research, 22, 255–270.
Acknowledgements
We are grateful to the two anonymous reviewers for their valuable comments and suggestions which helped to improve the manuscript. We express our gratitude to Dr Sushma Panigrahy, Editor of this special volume for encouragement and support in preparing this paper. Our thanks are due to Dr R.R. Navalgund, Director and Dr J.S. Parihar, Deputy Director, Space Applications Centre, Ahmedabad for encouragement and advice. This work is a part of the sub-project on the impact of predicted sea-level rise along AP coast, funded by the Space Applications Centre, ISRO, Ahmedabad under the Ministry of Environment & Forests sponsored scheme on coastal zone studies.
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Nageswara Rao, K., Subraelu, P., Naga Kumar, K.C.V. et al. Climate Change and Sea-Level Rise: Impact On Agriculture Along Andhra Pradesh Coast—A Geomatics Analysis. J Indian Soc Remote Sens 39, 415–422 (2011). https://doi.org/10.1007/s12524-011-0120-4
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DOI: https://doi.org/10.1007/s12524-011-0120-4