We are thankful to the NOAA CIRES Climate Diagnostics Center for providing the NCEP–NCAR reanalysis dataset online (www.cdc.noaa.gov), Jay Harris for data preparation, and two anonymous reviewers for helpful comments. Financial support was provided by grants from the National Oceanic and Atmospheric Administration (NOAA, through PACS and GAPP). This research was carried out in part under the auspices of the Cooperative Institute for Marine and Atmospheric Studies (CIMAS), a joint institute of the University of Miami and NOAA, Cooperative Agreement NA17RJ1226. The findings and conclusions in this report are those of the authors and do not necessarily represent the views of the funding agency.
Amador, J. A., 1998: A climatic feature of the tropical Americas: The trade wind easterly jet. Tóp. Meteor. Oceanogr., 5 , 91–102.
Amador, J. A., , and V. Magaña, 1999: Dynamics of the low-level jet over the Caribbean Sea. Preprints, 23d Conf. on Hurricanes and Tropical Meteorology, Dallas, TX, Amer. Meteor. Soc., 868–869.
Amador, J. A., , E. J. Alfaro, , O. G. Lizano, , and V. O. Magaña, 2006: Atmospheric forcing of the eastern tropical Pacific: A review. Progress in Oceanography, Vol. 69, Pergamon Press, 101–142.
Barnston, A. G., , and R. E. Livezey, 1987: Classification, seasonality and persistence of low-frequency atmospheric circulation patterns. Mon. Wea. Rev., 115 , 1083–1126.
Bottomley, M., , C. K. Folland, , J. Hsiung, , R. E. Newell, , and D. E. Parker, 1990: Global Ocean Surface Temperature Atlas (GOSTA). Her Majesty’s Stationery Office, 20 pp.+313 plates.
Curtis, S., 2002: Interannual variability of the bimodal distribution of summertime rainfall over Central America and tropical storm activity in the far-eastern Pacific. Climate Res., 22 , 141–146.
Davis, R. E., 1976: Predictability of sea surface temperature and sea level pressure anomalies over the North Pacific Ocean. J. Phys. Oceanogr., 6 , 249–266.
Enfield, D. B., , and D. A. Mayer, 1997: Tropical Atlantic sea surface temperature variability and its relation to El Niño–Southern Oscillation. J. Geophys. Res., 102 , 929–945.
Enfield, D. B., , A. M. Mestas-Nuñez, , D. A. Mayer, , and L. Cid-Serrano, 1999: How ubiquitous is the dipole relationship in tropical Atlantic sea surface temperatures? J. Geophys. Res., 104 , 7841–7848.
Enfield, D. B., , A. M. Mestas-Nuñez, , and P. J. Trimble, 2001: The Atlantic multidecadal oscillation and its relation to rainfall and river flows in the continental U.S. Geophys. Res. Lett., 28 , 2077–2080.
Gershunov, A., , and T. P. Barnett, 1998: Interdecadal modulations of ENSO teleconnections. Bull. Amer. Meteor. Soc., 79 , 2715–2725.
Gibson, J. K., , P. Kallberg, , S. Uppala, , A. Hernandez, , A. Nomura, , and E. Serrano, 1997: Era description. ECMWF Re-Analysis (ERA) Project Rep. Series 1, 72 pp.
Hastenrath, S. L., 1966: The flux of atmospheric water vapor over the Caribbean Sea and the Gulf of Mexico. J. Appl. Meteor., 5 , 778–788.
Higgins, R. W., , Y. Yao, , E. S. Yarosh, , J. E. Janowiak, , and K. C. Mo, 1997: Influence of the Great Plains low-level jet on summertime precipitation and moisture transport over the central United States. J. Climate, 10 , 481–507.
Hsu, C. F., , and J. M. Wallace, 1976: The global distribution of the annual and semiannual cycles in precipitation. Mon. Wea. Rev., 104 , 1093–1101.
Hu, Q., , and S. Feng, 2001a: Climatic role of the southerly flow from the Gulf of Mexico in interannual variations in summer rainfall in the central United States. J. Climate, 14 , 3156–3170.
Hu, Q., , and S. Feng, 2001b: Variations of teleconnection of ENSO and interannual variation in summer rainfall in the central United States. J. Climate, 14 , 2469–2480.
Hurrell, J. W., 1995: Decadal trends in the North Atlantic Oscillation, 1995: Regional temperatures and precipitation. Science, 269 , 676–679.
Kanamitsu, M., , W. Ebisuzaki, , J. Woollen, , S. K. Yang, , J. J. Hnilo, , M. Fiorino, , and G. L. Potter, 2002: NCEP–DOE AMIP-II reanalysis (R-2). Bull. Amer. Meteor. Soc., 83 , 1631–1643.
Kaplan, A., , M. A. Cane, , Y. Kushnir, , A. C. Clement, , M. B. Blumenthal, , and B. Rajagopalan, 1998: Analysis of global sea surface temperatures 1856–1991. J. Geophys. Res., 103 , 18567–18589.
Kistler, R., and Coauthors, 2001: The NCEP–NCAR 50-Year Reanalysis: Monthly means CD-ROM and documentation. Bull. Amer. Meteor. Soc., 82 , 247–267.
Magaña, V., , J. A. Amador, , and S. Medina, 1999: The midsummer drought over Mexico and Central America. J. Climate, 12 , 1577–1588.
Mestas-Nuñez, A. M., , and D. B. Enfield, 2001: Eastern equatorial Pacific SST variability: ENSO and non-ENSO components and their climatic associations. J. Climate, 14 , 391–402.
Mestas-Nuñez, A. M., , C. Zhang, , and D. B. Enfield, 2005: Uncertainties in estimating moisture fluxes over the Intra-Americas Sea. J. Hydrometeor., 6 , 696–709.
Mo, K. C., , M. Chelliah, , M. L. Carrera, , R. W. Higgins, , and W. Ebisuzaki, 2005: Atmospheric moisture transport over the United States and Mexico as evaluated in the NCEP regional reanalysis. J. Hydrometeor., 6 , 710–728.
Mora, I., , and J. A. Amador, 2000: El ENOS, el IOS y la corriente en chorro de bajo nivel en el oeste del Caribe. Tóp. Meteor. Oceanogr., 7 , 1–20.
Nigam, S., 2003: Teleconnections. Encyclopedia of Atmospheric Sciences, J. R. Holton, J. A. Pyle, and J. A. Curry, Eds., Elsevier Science, 2243–2269.
Paegle, J., , K. C. Mo, , and J. Nogues-Paegle, 1996: Dependence of simulated precipitation on surface evaporation during the 1993 United States summer floods. Mon. Wea. Rev., 124 , 345–361.
Reynolds, R. W., , and T. M. Smith, 1994: Improved global sea surface temperature analysis using optimum interpolation. J. Climate, 7 , 929–948.
Ruiz-Barradas, A., , and S. Nigam, 2005: Warm season rainfall variability over the U.S. Great Plains in observations, NCEP and ERA-40 reanalyses, and NCAR and NASA atmospheric model simulations. J. Climate, 18 , 1808–1830.
Vernekar, A. D., , B. P. Kirtman, , and M. J. Fennessy, 2003: Low-level jets and their effects on the South American summer climate as simulated by the NCEP Eta Model. J. Climate, 16 , 297–311.
Wallace, J. M., , and D. S. Gutzler, 1981: Teleconnections in the geopotential height field during the Northern Hemisphere winter. Mon. Wea. Rev., 109 , 784–812.
Xie, P., , and P. A. Arkin, 1997: Global precipitation: A 17-year monthly analysis based on gauge observations, satellite estimates, and numerical model outputs. Bull. Amer. Meteor. Soc., 78 , 2539–2558.