Galactic cosmic rays—clouds effect and bifurcation model of the Earth global climate. Part 2. Comparison of theory with experiment

Abstract

The solution of energy-balance model of the Earth global climate and the EPICA Dome C and Vostok experimental data of the Earth surface palaeotemperature evolution over past 420 and 740 kyr are compared.In the framework of proposed bifurcation model (i) the possible sharp warmings of the Dansgaard-Oeschger type during the last glacial period due to stochastic resonance is theoretically argued; (ii) the concept of climatic sensitivity of water in the atmosphere, whose temperature instability has the form of so-called hysteresis loop, is proposed, and based of this concept the time series of global ice volume over the past 1000 kyr, which is in good agreement with the time series of δ 18 O concentration in the sea sediments, is obtained; (iii) the so-called "CO 2 doubling" problem is discussed.

Modeling ionospheric super‐fountain effect based on the coupled TIMEGCM‐SAMI3

“…[3] The geomagnetic storm on 9 November 2004 offers another opportunity to examine ionospheric characteristics associated with the super-fountain effect. One of the most remarkable features of the storm is the strong upward drift of 120 m/s near the magnetic equator, which was the largest vertical ion drift ever measured by the Jicamarca incoherent scatter located in Peru [Fejer et al, 2007;Kelley et al, 2010]. The distribution of equatorial vertical ion drift measured by the radar closely followed the temporal variation of the interplanetary magnetic field (IMF) B z component, and the eastward electric field associated with the upward vertical drift was estimated to be about 10% of the solar wind electric field [e.g., Kelley et al, 2010], a clear indication of prompt penetration electric field (PPEF) from the solar wind to the equatorial ionosphere via the high-latitude ionosphere.…”

Galactic cosmic rays-clouds effect and bifurcation model of the Earth global climate. Part 1. Theory

“…First one has to research and find the group of governing parameters on which the energy-balance equation of global climate model depends on intermediate (millennial) time scale. Later one has to verify the model (Rusov et al, 2010) by comparison with the well-known experimental paleotemperature data (for example, EPICA community members, 2004 and (Petit et al, 1999). In the case of a good agreement between theory and experiment, it means that the model correctly ''guesses'' the physical sense of governing parameters (for example, the variations of insolation and cosmic ray intensity).…”

“…Rusov et al (2010) is simple. First one has to research and find the group of governing parameters on which the energy-balance equation of global climate model depends on intermediate (millennial) time scale.…”

“…Before discussing the details of computational experiment and its results (Rusov et al, 2010), let us consider some conceptually important moments related to the hierarchy of climate states on the different time scales and possible links between them. In this sense hidden connection between the multizonal model of Earth weather on the decennial time scale and one-zonal model of global climate on the millennial time scale is most interesting with respect to physics of hierarchy of climate states on the different scales of time there.…”

“…Part 2 of this paper (Rusov et al, 2010) is devoted to verification of the solution of Eqs. (29)-(30) of energy-balance model of the Earth global climate based on the well-known experimental data of Earth surface palaeotemperature evolution, i.e.…”