земная климатическая система

Estimation of frequency response of the global temperature to change in radiative forcing

Authors: Bogdanov M. B., Chervyakov M. Y.

The Earth’s climate system (ECS) is considered as a linear system whose input is a change in the solar constant ΔI( t) and the output is an anomaly of the globally averaged surface temperature ΔT( t). The system input can be affected by other factors, and at the output their own temperature fluctuations and a random noise manifest themselves. All these factors are assumed to be independent of ΔI( t). The spectral analysis of monthly mean values of ΔI( t) and ΔT( t) shows the existence of statistically significant coherence.

Estimation of Impulse Response of Earth’s Climate System at Century Time Interval

Authors: Bogdanov M. B., Chervyakov M. Y.

The Earth’s climate system (ECS) is considered as a linear system whose input is the change in the solar constant, and whose output is the global mean near-surface temperature anomaly. As a result of the restoration of the impulse response at century time interval using reconstructed data on the solar constant and global temperature it was shown that its time constant is 32 ± 14 years. The sensitivity of the ECS to radiative forcing is 1.31 ± 0.63 K·W-1·m2, and the positive feedback coefficient is 4.4 ± 2.1.

Estimation of Response Time and Sensitivity of the Earth’s Climate System to Radiative Forcing

Authors: Bogdanov M. B., Chervyakov M. Y.

The Earth’s climate system (ECS) is considered as a linear system whose input is a change in the solar constant, and the output is an anomaly of the globally averaged surface temperature. As a result of the restoration, the impulse response of the system was obtained at time intervals up to 100 months. It has been shown that the response time of ECS can be characterized by a time constant of 1.305 ± 0.026 months. The sensitivity of ECS to radiative forcing is 0.320±0.074 K W-1m2, and the positive feedback coefficient is 1.07±0.25.

Estimation of Frequency Response of Earth’s Climate System to External Radiative Forcing

Authors: Bogdanov M. B.

 We consider the Earth’s climate system (ECS) as a linear system whose output is the global mean temperature anomaly DТ(t). The input the system, along with changes in the solar constant DI(t), can be affected by other factors, and at the output manifest themselves own temperature fluctuations and a random noise. The spectral analysis of the data shows the existence of statistically significant coherence between DI(t) and DТ(t).

Estimation of Characteristics of the Earth’s Climate System from its Response to Changes in Solar Constant

Authors: Bogdanov M. B., Efremova T. Y., Katruschenko A. V.

Restoration of the impulse response of the Earth's climate system (ECS) showed that the rate of its reaction can be characterized by an equivalent time constant of 1.04±0.17 months. Sensitivity of ECS to changes in radiative forcing is equal to 0.41±0.05 K W-1m2, which gives the positive feedback factor 1.37±0.17.

A Comprehensive Analysis of the Centres of the Atmosphere Action of the Nortern Hemishere

Authors: Morozova S. V.

On the basis of a new approach to the study of the circulation of objects in the hemisphere physical-statistical method considered changing dynamics of the main circulation system of the Northern Hemisphere. Based on this approach, the peculiarities of the circulation regime change in the hemisphere at different periods of the Earth’s climate system