In the article, based on the results of assessing, the magnitude of the mutual correlation between variations in the speed of Earth rotation and the change in global temperature over the period from 1900 to 2015 the forecast of variations in the Earth's rotation speed and its temperature for a period of up to 20 years is given. The main parameter for building a prediction model is the speed of Earth rotation. It is shown that the observed global warming from the mid-20s of the current 100th anniversary is likely to enter the long cooling phase.
In this paper, we discuss the estimating errors possibilities of positioning and time determinations arising from navigation signals delays of Global Navigation Satellites Systems in the Earth atmospheric layers (ionosphere and troposphere). The software ModBis24 imitate navigation signals system GLONASS. The ModBis24 is used to obtain quantitative estimates of the tropospheric and ionospheric delays and to plan optimally sessions for accuracy positioning and time determinations GNSS service users.
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