@Article{KaneTeix:1990:PoSpAn,
               author = "Kane, Rajaram Purushottam and Teixeira, Nelson Rodrigues",
                title = "Power spectrum analysis of the time-series of annual mean surface 
                         air temperatures",
              journal = "Climatic Change",
                 year = "1990",
               volume = "17",
               number = "1",
                pages = "121--130",
                month = "Aug.",
             keywords = "GEOFISICA ESPACIAL.",
             abstract = "Maximum Entropy Spectral Analysis of the annual mean surface 
                         temperature series for land masses and sea in the northern and 
                         southern hemispheres indicated long-term linear warming trends of 
                         (0.12 to 0.56) C/century with superposed significant periods in 
                         the ranges T=5-6 yr, 10-11 yr, 15 yr, 20 yr, 28-32 yr, and 55-80 
                         yr. Extrapolation in future indicated for 2000-2030 a departure of 
                         (+0.4 degree C) above the 1950-70 level. However, for the 1980s, 
                         the observed values are above the expected level, probably 
                         indicating large greenhouse effects due to human intervention. In 
                         that case, our predictions would be underestimates.",
                 issn = "0165-0009",
                label = "2966",
             language = "en",
           targetfile = "BF00149003.pdf",
        urlaccessdate = "09 maio 2024"
}