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Pilot Analysis of Hourly Rainfall in Central and Eastern Amazonia

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  • 1 Geography Department, Western Michigan University, Kalamazoo, Michigan
  • | 2 Space Science and Engineering Center, University of Wisconsin—Madison, Madison, Wisconsin
  • | 3 Geography Department, Western Michigan University, Kalamazoo, Michigan
  • | 4 Departamento de Meteorologia, Universidade Federal do Parà, Belém, Para, Brazil
  • | 5 International Research Institute for Climate Prediction, Scripps Institute of Oceanography, University of California, San Diego, La Jolla, California
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Abstract

This paper presents results of a pilot study of rainfall along the part of the Amazon River that flows through Brazil. Rain was measured at three stations, one for each of three regimes: coastal, interior bottomland, and interior upland. For each station the record from 1 January 1988 through 31 December 1990 was parsed into accumulation periods of 1 h. Storms on the coast tended to be more showery than those in the interior and storms in the interior upland tended to be more showery than those in the interior lowland. The diurnal cycle varied with distance from the Amazon River as well as with distance from the Atlantic coast.

Corresponding author address: Prof. Elen M. C. Cutrim, Geography Department, Western Michigan University, Kalamazoo, MI 49008.

Email: cutrim@wmich.edu

Abstract

This paper presents results of a pilot study of rainfall along the part of the Amazon River that flows through Brazil. Rain was measured at three stations, one for each of three regimes: coastal, interior bottomland, and interior upland. For each station the record from 1 January 1988 through 31 December 1990 was parsed into accumulation periods of 1 h. Storms on the coast tended to be more showery than those in the interior and storms in the interior upland tended to be more showery than those in the interior lowland. The diurnal cycle varied with distance from the Amazon River as well as with distance from the Atlantic coast.

Corresponding author address: Prof. Elen M. C. Cutrim, Geography Department, Western Michigan University, Kalamazoo, MI 49008.

Email: cutrim@wmich.edu

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