%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3EU29DP
%3 1-s2.0-S0273117701002708-main.pdf
%X Observations of total ozone at low latitudes in Brazil have been made using Dobson spectrophotometers since 1974 for Cachoeira Paulista (23.1 degrees S, 45 degrees W)and since 1978 for Natal (5.8 degreesS, 35.2 degrees W), Annual averages, 12 months and 36 months running averages have been analyzed. Spectral analyses of the data revealed that the most important periods found (confidence level > 90) were: for Natal, 2.5 years (93.1, quasi-biennial oscillation-QBO)and 10 years (98.2, possibly the solar cycle signal), for Cachoeira Paulista, 2.4 years (96.8, QBO)and 8 years (99.6). The difference in total ozone between maximum and minimum solar cycles were estimated, using yearly averages of total ozone, For solar cycle 21, 1.16 and 1.26 for Natal and Cachoeira Paulista were found; for solar cycle 22, a larger difference of 3.8 for Natal and 4.1 for Cachoeira Paulista were found. The corresponding variation in UV-B at 300 nm, using Beer's law, is 8-10 for C. Paulista and 4-5 for Natal, with maxima occurring during the minimum of the solar cycle.
%N 12
%@secondarydate 20000304
%T A study of the solar cycle signal on total ozone over low-latitude brazilian observation stations
%K GEOFÍSICA ESPACIAL, efeitos da atividade solar, espectrometro de mapeamento de ozonio total, solar activity effects, total ozone mapping spectrometer, tropical regions (low latitudes)regiões tropicais (baixa latitude).
%@secondarytype PRE PI
%@archivingpolicy denypublisher denyfinaldraft24
%@usergroup administrator
%@usergroup jefferson
%@group DGE-INPE-MCT-BR
%@group DGE-INPE-MCT-BR
%@group DGE-INPE-MCT-BR
%@secondarykey INPE-8640-PRE/4374
%F 9613
%@issn 0273-1177
%2 sid.inpe.br/iris@1905/2005/08.02.21.47.42
%B Advances in Space Research
%P 1983-1986
%4 sid.inpe.br/iris@1905/2005/08.02.21.47.40
%@documentstage not transferred
%D 2001
%V 27
%A Echer, Ezequiel,
%A Kirchhoff, Volker Walter Johann Heinrich,
%A Sahai, Yogeshwar,
%A Leme, Neusa Maria Paes,
%@dissemination WEBSCI; PORTALCAPES; MGA; COMPENDEX.
%@area CEA