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Forcing of Eastern Boundary Current Regions

PI: Noah S. Diffenbaugh
Institution: Purdue University
Abstract:
The subject of the analyses will be the seasonality and annual- to decadal-scale variability of large-scale forcing of eastern boundary current (EBC) regions. EBCs support highly productive marine ecosystems, as well as large agricultural areas. They are forced by both regional- and large-scale processes, including annual to decadal modes such as ENSO and PDO. The objectives of the analysis will be (1) to test the ability of the participating coupled GCMs to reproduce observed records of 20th century seasonality and variability of large-scale EBC forcing and (2) to evaluate those large-scale processes in the SRES A1B and B2 scenarios. The analyses will use output from the 20th century simulation (from either run 1 or run 6 on the WGCM run list) and the SRES A1B and B1 simulations (from run 2 and run 3 on the WGCM run list). Model data will come from the time-independent 2-d land surface and ocean data, monthly-mean 1-d ocean data, monthly-mean 2-d atmosphere, land surface, ocean and sea ice data, and monthly-mean 3-d atmosphere and ocean data (Tables A1a, A1b, A1c, O1a, O1b, O1c, O1d, O1e). While it is of course impossible to know all of the variables of potential interest prior to conducting the analyses, variables of known interest include: psl, pr, tas, mrso, uas, vas, clt (Table A1a), orog, sftlf (Table A1b), cl, ta, ua, va, hus, wap, zg, hur (Table A1c), tos (Table O1c), zobt (Table O1d), so, uo, vo, and wo (Table O1e). The minimum required variables are pr, ts, ta, ua, va, zg, and wo.
Publications:
  • Ahmed, S.A., N.S. Diffenbaugh and T.W. Hertel, 2009: Climate volatility deepens poverty vulnerability in developing countries. Environmental Research Letters, doi: 10.1088/1748-9326/4/3/034004. Abstract. Full Article. Edit.
  • Ahmed, S.A., N.S. Diffenbaugh, T.W. Hertel, D.B. Lobell, N. Ramankutty, A.R. Rios and P. Rowhani, 2010: Climate volatility and poverty vulnerability in Tanzania. Global Environmental Change, doi:10.1016/j.gloenvcha.2010.10.003. Abstract. Edit.
  • Ashfaq, M., C.B. Skinner, and N.S. Diffenbaugh, 2010: Influence of SST biases on future climate change projections. Climate Dynamics, 10.1007/s00382-010-0875-2. Abstract. Full Article. Edit.
  • Ashfaq, M., Y. Shi, W.-w. Tung, R.J. Trapp, X. Gao, J.S. Pal and N.S. Diffenbaugh, 2009: Suppression of South Asian summer monsoon precipitation in the 21st century. Geophysical Research Letters, 36, L01704, doi:10.1029/2008GL036500. Abstract. Edit.
  • Diffenbaugh, N.S, M. Ashfaq, and M. Scherer, 2011: Transient regional climate change: analysis of the summer climate response in a high-resolution, century-scale, ensemble experiment over the continental United States. Journal of Geophysical Research Atmospheres, 116, D24111, doi:10.1029/2011JD016458. Abstract. Full Article. Edit.
  • Diffenbaugh, N.S., 2005: Response of large-scale eastern boundary current forcing in the 21st century. Geophysical Research Letters, 32, L19718, doi:10.1029/2004GL023905. Abstract. Full Article. Edit.
  • Diffenbaugh, N.S., 2012: Human well-being, the global emissions debt, and climate change commitment. Sustainability Science, doi: 10.1007/s11625-012-0174-4. Abstract. Full Article. Edit.
  • Diffenbaugh, N.S. and Ashfaq, M., 2010: Intensification of hot extremes in the United States. Geophysical Research Letters, doi:10.1029/2010GL043888. Abstract. Full Article. Edit.
  • Diffenbaugh, N.S. and M. Scherer, 2011: Observational and model evidence for global emergence of unprecedented heat in the 20th and 21st centuries. Climatic Change, DOI 10.1007/s10584-011-0112-y. Abstract. Full Article. Edit.
  • Diffenbaugh, N.S. and M. Scherer, 2012: Using climate impacts indicators to evaluate climate model ensembles: temperature suitability of premium winegrape cultivation in the United States. Climate Dynamics, DOI: 10.1007/s00382-012-1377-1. Abstract. Full Article. Edit.
  • Diffenbaugh, N.S., C.H. Krupke, M.A. White and C.E. Alexander, 2008: Global warming presents new challenges for maize pest management. Environmental Research Letters, doi: 10.1088/1748-9326/3/4/044007. Abstract. Full Article. Edit.
  • Diffenbaugh, N.S., F. Giorgi and J.S. Pal, 2008: Climate change hotspots in the United States. Geophysical Research Letters, 35, doi:10.1029/2008GL035075. In press. Abstract. Full Article. Edit.
  • Diffenbaugh, N.S., F. Giorgi, L. Raymond and X. Bi, 2007: Indicators of 21st century socioclimatic exposure. Proceedings of the National Academy of Sciences, 104, 20195-20198. Abstract. Full Article. Edit.
  • Giorgi, F. and N. Diffenbaugh, 2008: Developing regional climate change scenarios for use in assessment of effects on human health and disease. Climate Research, 36, 141-151. Abstract. Full Article. Edit.
  • Horton, D.E., Harshvardhan and N.S. Diffenbaugh, 2012: Response of air stagnation frequency to anthropogenically enhanced radiative forcing. Environmental Research Letters, 7, 044034, doi:10.1088/1748-9326/7/4/044034. Abstract. Full Article. Edit.
  • Lintner, B.R., M. Biasutti, N.S Diffenbaugh, J.-E. Lee, M.J. Niznik and K.L. Findell, 2012: Amplification of wet and dry month occurrence over tropical land regions in response to global warming. Journal of Geophysical Research Atmospheres, 117, doi:10.1029/2012JD01749. Abstract. Full Article. Edit.

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