1991

  1. [Beltrami and Mareschal 1991]
    Eastern Canada boreholes. Little ice age . Warming of 1-2 C during the past 100 to 150 years.
    Paleoclimate, temperature reconstructions, boreholes, Canada

    [Berger and Loutre 1991]
    New values for the astronomical parameters of the Earth's orbit and rotation (eccentricity, obhqulty and precession) are proposed for paleochmatle research related to the Late Miocene, the Phocene and the Quaternary They have been obtained from a numerical solution of the Lagranglan system of the planetary point masses and from an analytical solution of the Polsson equations of the Earth-Moon system The analytical expansion developed in this paper allows the direct determination of the main frequencies with their phase and amphtude Numerical and analytical comparisons with the former astronomical solution BER78 are performed so that the accuracy and the interval of time over which the new solution is valid can be estimated The corresponding insolation values have also been computed and compared to the former ones This analysis leads to the conclusion that the new values are expected to be reliable over the last 5 Ma In the time domain and at least over the last 10 Mam the frequency domain
    Insolation, orbital forcing

  2. [Hernández et al. 1991]
    Kalman filter applied to atmospheric pollution in Madrid
    Kalman filter, atmospheric pollution

  3. [Shen and Beck 1991]
    Functional space inversion
    Borehole reconstructions, last millennium, temeprature reconstructions

  4. [White et al. 1991]
    Regionalization and rotation of principal components
    Methods, Eof rotation