Published July 1987
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Radon concentration inversions in the troposphere
Description
Vertical concentrations of radon in the lower troposphere were obtained in Southern Brazil up to 7Km high and have shown unexpected inverted profiles. The presence of low pressure center systems southwest to the flight path suggested that inversions might have been originated by a vertical transport mechanism based on the large scale circulation of developing synoptic systems. A simple friction-driven circulation model was contructed and the transport equation was solved. (author)
Abstract (Portuguese)
Foram obtidas as concentracoes verticais de radonio na troposfera inferior ate 7 Km de altura, no sul do Brasil, mostrando perfis invertidos inesperados. A presenca dos centros de baixa pressao na direcao sudoeste para o caminho do voo sugere que, estas inversoes podem ser originadas por um mecanismo de transporte vertical baseado num sistema sinoptico de desenvolvimento da circulacao em grande escala. Um modelo simples de transmissao por atrito foi construido e a equacao de transporte foi ressolvida. (M.C.K.)Files
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Additional details
Publishing Information
- Imprint Pagination
- 22 p.
- Report number
- INPE--4197
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 19044516
- Subject category
- S54: ENVIRONMENTAL SCIENCES;
- Descriptors DEI
- ECOLOGICAL CONCENTRATION; MATHEMATICAL MODELS; RADIONUCLIDE MIGRATION; RADON; TRANSPORT THEORY; TROPOSPHERE
- Descriptors DEC
- EARTH ATMOSPHERE; ELEMENTS; ENVIRONMENTAL TRANSPORT; MASS TRANSFER; NONMETALS; RARE GASES