Airglow observations of the hydroxil s rotacional temperature at the terrestrial mesospheric region / Observação da temperatura rotacional da hidroxila através da aeroluminescência na região da mesosfera terrestre

AUTOR(ES)
DATA DE PUBLICAÇÃO

2000

RESUMO

The Atmospheric Airglow Laboratory (LUME)of National Institute for Space Research (INPE)developed a portable photometer with a tilting filter to measure the OH(8,3)band airglow. A computer program was developed to control the photometer operation and to accomplish the acquisition and reduction of the data. Photometer sensitivity and spectral calibrations were carried out in order to determine the OH(8,3)line intensities. After these steps, the airglow observations were carried out at the LUME airglow observatory at the Space Center of Cachoeira Paulista - INPE. With the results obtained during the months of August to November in 1999, the estimations of the rotational temperatures of OH(8,3)were carried out. An averaged OH(8,3)band intensity during the period was 358 Rayleigh, and the rotational temperature was 210 Kelvin. It is found that the OH(8,3)temperature obtained with the transition coefficient of Langhoff et al. (1986)has better agreement with the OH(6,2)temperature obtained using Mies (1974)transition probability.

ASSUNTO(S)

geofísica espacial mesosfera temperature mesophere aeroluminescência temperatura transition probabilities airglow emissões de hidroxila probabilidade de transição hydroxyl emission probabilidade de transição

ACESSO AO ARTIGO

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