• Bresnahan PA, Miller DR. 1997. Choice of data scale: predicting resolution error in a regional evapotranspiration model. Agricultural and Forest Meteorology 84: 97113.
  • Chen M, Xie P, Janowiak JE, Arkin PA. 2002. Global land precipitation: a 50-yr monthly analysis based on gauge observations. Journal of Hydrometeorology 3: 249266.
  • Costa MH, Foley JA. 1998. A comparison of precipitation datasets for the Amazon basin. Geophysical Research Letters 25: 155158.
  • Giorgi F, Marinucci MR. 1996. An investigation of the sensitivity of simulated precipitation to model resolution and its implications for climate studies. Monthly Weather Review 124: 148166.
  • HoughtonJT, DingY, GriggsDJ, NoguerM, van der LindenPJ, DaiX, MaskellK, JohnsonCA (eds). 2001. Climate Change 2001: The Scientific Basis. Cambridge University Press: Cambridge.
  • Huffman GJ, Adler RF, Morrissey MM, Bolvin DT, Curtis S, Joyce R, McGavock B, Susskind J. 2001. Global precipitation at one-degree daily resolution from multisatellite observations. Journal of Hydrometeorology 2: 3650.
  • Johnson ML 2002. Estimating precipitation over the Amazon basin from satellite and in-situ measurements, Masters thesis, University of Delaware, Newark, DE, 68.
  • Webber SR, Willmott CJ. 1998. South American precipitation: 1960–1990 gridded monthly time series (version 1.02). Available online at∼climate.
  • Willmott CJ, Rowe CM, Philpot WD. 1985. Small-scale climate maps: a sensitivity analysis of some common assumptions associated with grid-point interpolation and contouring. American Cartographer 12: 516.
  • Willmott CJ, Robeson SM, Feddema JJ. 1994. Estimating continental and terrestrial precipitation averages from raingauge networks. International Journal of Climatology 14: 403414.
  • Willmott CJ, Webber SR. 1998. South American precipitation: gridded monthly and annual climatologies (version 1.02). Available online at∼climate.