The DOI matches its Crossref record; 40 of the 40 references it cites were found in a registry or an index.
Warming of the Indian Ocean threatens eastern and southern African food security but could be mitigated by agricultural development
Open accessAbstract
Since 1980, the number of undernourished people in eastern and southern Africa has more than doubled. Rural development stalled and rural poverty expanded during the 1990s. Population growth remains very high, and declining per-capita agricultural capacity retards progress toward Millennium Development goals. Analyses of in situ station data and satellite observations of precipitation have identified another problematic trend: main growing-season rainfall receipts have diminished by ≈15% in food-insecure countries clustered along the western rim of the Indian Ocean. Occurring during the main growing seasons in poor countries dependent on rain-fed agriculture, these declines are societally dangerous. Will they persist or intensify? Tracing moisture deficits upstream to an anthropogenically warming Indian Ocean leads us to conclude that further rainfall declines are likely. We present analyses suggesting that warming in the central Indian Ocean disrupts onshore moisture transports, reducing continental rainfall. Thus, late 20th-century anthropogenic Indian Ocean warming has probably already produced societally dangerous climate change by creating drought and social disruption in some of the world's most fragile food economies. We quantify the potential impacts of the observed precipitation and agricultural capacity trends by modeling “millions of undernourished people” as a function of rainfall, population, cultivated area, seed, and fertilizer use. Persistence of current tendencies may result in a 50% increase in undernourished people by 2030. On the other hand, modest increases in per-capita agricultural productivity could more than offset the observed precipitation declines. Investing in agricultural development can help mitigate climate change while decreasing rural poverty and vulnerability.
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The NCEP/NCAR 40-Year Reanalysis Project
Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G., Woollen, J., et al. (1996) · Bulletin of the American Meteorological Society · doi:10.1175/1520-0477(1996)077<0437:tnyrp>2.0.co;2 · Cited by 28,360
Climate change 2007: the physical science basis
Solomon, S., Qin, D., Manning, M., Marquis, M. C., Averyt, K. B., Tignor, M., Miller, H. L., & Chen, Z. (2007) · Cited by 23,383
Climate Change 2007: Impacts, Adaptation and Vulnerability
Parry, M. L., Canziani, O. F., Palutikof, J. P., van der Linden, P., & Hanson, C. (2007) · Centre for Environmental Data Analysis Digital Repository (Centre for Environmental Data Analysis) · doi:10.5281/zenodo.7356334 · Cited by 9,136
Mackay, A. (2008) · Journal of Environmental Quality · doi:10.2134/jeq2008.0015br · Cited by 5,591
Adler, R. F., Huffman, G. J., Chang, A. T. C., Ferraro, R. R., Xie, P., Janowiak, J. E., Rudolf, B., Schneider, U., Curtis, S., Bolvin, D. T., et al. (2003) · Journal of Hydrometeorology · doi:10.1175/1525-7541(2003)004<1147:tvgpcp>2.0.co;2 · Cited by 5,425
(1982) · International Geophysics · doi:10.1016/s0074-6142(08)x6002-4 · Cited by 4,853
Changes in Atmospheric Constituents and in Radiative Forcing
Forster, P. M. D. F., Ramaswamy, V., Artaxo, P. E., Berntsen, T. K., Betts, R., Fahey, D. W., Haywood, J., Lean, J. L., Lowe, D. C., Myhre, G., et al. (2007) · elib (German Aerospace Center) · Cited by 4,635
A framework for vulnerability analysis in sustainability science
Turner, B. L., Kasperson, R. E., Matson, P. A., McCarthy, J. J., Corell, R. W., Christensen, L., Eckley, N., Kasperson, J. X., Luers, A., Martello, M. L., et al. (2003) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1231335100 · Cited by 4,358
Solomon, S. (2007) · Medical Entomology and Zoology · Cited by 4,149
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Global water crisis and future food security in an era of climate change
Hanjra, M. A., & Qureshi, M. E. (2010) · Food Policy · doi:10.1016/j.foodpol.2010.05.006 · Cited by 1,387
Climate change risks for African agriculture
Müller, C., Cramer, W., Hare, W. L., & Lotze-Campen, H. (2011) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1015078108 · Cited by 490
The poverty implications of climate-induced crop yield changes by 2030
Hertel, T. W., Burke, M. B., & Lobell, D. B. (2010) · Global Environmental Change · doi:10.1016/j.gloenvcha.2010.07.001 · Cited by 487
Recent drought and precipitation tendencies in Ethiopia
Viste, E., Korecha, D., & Sorteberg, A. (2013) · Theoretical and Applied Climatology · doi:10.1007/s00704-012-0746-3 · Cited by 462
Multidecadal variability in East African hydroclimate controlled by the Indian Ocean
Tierney, J. E., Smerdon, J. E., Anchukaitis, K. J., & Seager, R. (2013) · Nature · doi:10.1038/nature11785 · Cited by 352
Metadata
- Authors
- Funk, C., Dettinger, M. D., Michaelsen, J. C., Verdin, J. P., Brown, M. E., Barlow, M., & Hoell, A.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2008-08-12
- Volume
- 105
- Issue
- 32
- Pages
- 11081-11086
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2125594613
- Cited by
- 508
- References
- 40
- FWCI
- 23.35
- Type
- journal article
- Language
- en
- Open access
- green
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- Funk, C., Dettinger, M. D., Michaelsen, J. C., Verdin, J. P., Brown, M. E., Barlow, M., & Hoell, A. (2008). Warming of the Indian Ocean threatens eastern and southern African food security but could be mitigated by agricultural development. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0708196105
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