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)()

Brinkmann, W. L. P.; Weinman, J. A.; Ribeiro, M. N. Góes; Brinkmann, W. L. P.; Weinman, J. A.; Ribeiro, M. N. Góes

doi:10.1590/1809-43921971012051

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Acta Amazonica

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

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

http://dx.doi.org/10.1590/1809-43921971012051

CIÊNCIAS DO AMBIENTE

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.

Abstract

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.

Resumo

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.

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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.

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