SciELO - Scientific Electronic Library Online

vol.1 issue2Light Environment in Tropical Rain Forest of Central AmazoniaTime dependency of hydrogen - ion concentration and electric conductivity measurements in river water samples of Central Amazonia() author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Acta Amazonica

Print version ISSN 0044-5967On-line version ISSN 1809-4392

Acta Amaz. vol.1 no.2 Manaus Aug. 1971 


Air temperatures in Central Amazonia. I - The daily record of air temperatures in a secondary forest near Manaus under cold front conditions (July 4 th, to July 13 th, 1969)(1)

W. L. F. Brinkmann* 

J. A. Weinman** 

M. N. Góes Ribeiro* 

*— Instituto Nacional de Pesquisas da Amazônia.

**— Department of Meteorology, University of Wisconsin, Madison, Wi, USA.


A "friagem" is a cold front which moves northward from southern Brazil to the Caribbean coast of South America. A set of composite satellite pictures (2) of the American sector of the southern hemisphere as well as the recorded of daily temperatures in a secondary forest near Manaus are presented. The low temperatures and strong winds associated with this phenomenon have a profound effect on the environment of Amazonia.


No período de 3 a 14 de julho de 1969 a temperatura do ar foi medida em duas altitudes em uma capoeira da Reserva Florestal Ducke, Estrada Manaus - Itacoatiara (Km — 26). Do dia 10 até o dia 13 a temperatura foi influenciada por uma onda fria (friagem) caida no local e cujo desenvolvimento foi observado por satélite (fotografado). No início da friagem, a temperatura baixou nos dois níveis até 15°C voltando após algumas horas a apresentar variações devido ao movimento turbulento das camadas de ar.

Texto disponível apenas em PDF

1) — Granted by Banco Nacional de Desenvolvimento Econômico under contract INPA/FUNTEC 89/70. This paper was originally published in Vol. 1, NO 1 of this Revista. Because of omissions of lines and clauses of the text, and also because the tables and illustrations were not included in the publication of the paper, it is now republished in this issue of Revista.

2) — The pictures were produced by N.O.A.A.

Creative Commons License  This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.