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PRECIPITATION IN THE CENTRAL AMAZON BASIN: - THE ISOTOPIC COMPOSITION OF RAIN AND ATMOSPHERIC MOISTURE AT BELÉM AND MANAUS Acta Amazonica
Matsui,E.; Salati,E.; Ribeiro,M. N. G.; Reis,C. M.; Tancredi,A. C. S. N. F.; Gat,J. R..
SUMMARY In order to improve the understanding of the water in the Amazon Basin, samples of rain and moisture were collected daily at Belém and Manaus from August 78 to January 80. All isotope data are presented. The most depleted values, sometimes lower than — 10‰ in δ18O at Belém or Manaus, were encountered during the rainy season (January-April). Possible causes of the seasonal differences in tne isotope pattern are discussed.
Tipo: Info:eu-repo/semantics/article
Ano: 1983 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671983000200307
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The effect of deforestation on the water cycle in the amazon basin: an attempt reformulate the problem Acta Amazonica
Gat,J. R.; Matsui,Ε.; Salati,Ε..
If widespread deforestation in Amazon results in reduced evaporative water flux, then either a decrease in evaporation is compensated locally by reduced rainfall,or else changed moisture balance expresses itself downwind in the yet undisturbed forest. The question of where rain will occur is crucial. It is suggested that the appearance of clouds and the occurrence of rainout is governed primarily by the interplay of local meteorologic and physical geography parameters with the atmospheric stability structure except for a few well-defined periods when rain is dominated by large scale atmospheric instability. This means that the study of these phenomena (local heat balances,studies on cloud formation mechanism, vertical atmospheric stability, etc.) must be...
Tipo: Info:eu-repo/semantics/article
Ano: 1985 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671985000200307
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