Поиск

Search

Важное примечание по списку литературы:
Поиск также индексирует списки литературы внутри статей. Если вы видите статью в результатах, но искомое слово не подсвечено в кратком описании — значит, оно находится внутри полного текста статьи или в списке цитируемых источников.

Important note on References:
The search also indexes the lists of references (bibliography) within the articles. If you see an article in the results but the search term is not highlighted in the summary, it means the term is located within the full text or the list of cited sources.

Bashkin, V.N.

GREENHOUSE GAS EMISSIONS AS A MEASURE OF ENERGYEFFICIENCY IN ASSESSING THE LIFE CYCLE OF FERTILIZERS

The article examines the problem of energy efficiency in the chain from the production of fertilizers to their logistics, application, and waste production and disposal based on the huge amount of data accumulated in recent years on greenhouse gas (GHG) emissions (primarily CO2 and methane). Carbon dioxide emissions are shown to occur primarily from fuel combustion, as well as from the use of methane and CO2 as precursors for nitrogen fertilizers. GHG emissions can be considered as a measure of energy efficiency when assessing the life cycle of mineral fertilizers. Relevant examples are given.

Snakin, V.V.

Dynamics of global natural processes and V.I. Vernadsky’s teaching of the biosphere

Based on V.I. Vernadsky’s teaching of the biosphere and modern scientific data, an attempt was made to analyze the mechanisms of the dynamics of modern global processes using the example of climate changes. Possible causes of the warming, both natural and anthropogenic, observed in the last century are considered. It is shown that it is the increase in temperature that causes the increase in the concentrations of carbon dioxide and methane in the atmosphere, and not vice versa, as follows from the greenhouse effect hypothesis. This seems to be the main cause for the low effectiveness of any international efforts to stabilize the climate. The course of natural processes, as well as the evolution of the biosphere as a whole, has an unstable, cyclical nature, running according to its own laws. Particular attention is paid to V.I. Vernadsky’s doctrine of the biosphere, his views on the role of reason and scientific research in solving problems inevitably arisen in the course of evolution on Earth, caused by the rapidly developing, from a historical standpoint, humanity. Scientific research is a reliable defender of both the interests of mankind and the biosphere as a whole. This was V.I. Vernadsky’s basis of his positive outlook on the future of our civilization and the biosphere.

Fedorov, V.M., Chukov, V.S., Frolov, D.M.

Causes of modern climate changes in the Arctic

Based on our previously performed calculations of irradiation with high spatial and temporal resolutions, using data from high-precision astronomical ephemerides, changes in the intensity of summer irradiation in the polar and equatorial 5-degree latitude zones of the Northern Hemisphere were analyzed. Over the period of 1900–2050 AD, a decrease in the intensity of summer irradiation in the polar region and its increase in the equatorial region were observed. The consequences of this phenomenon are an increase in the meridional gradient of insolation and an increase in the intensity of the meridional transfer of radiative heat associated with the rise of land surface air temperature and ocean surface temperature in the Arctic.

The faster temperature increase in the Arctic compared to other regions can be explained by the fact that energy (heat) is transferred from a larger area (heat source) to a smaller one (heat sink). In the summer half-year, the source area of radiative heat is 4.5 times greater than the sink area. As a result, the relative values of thermal energy (temperature) increase.

It is shown that based on the relationships between the patterns of the natural environment in the Arctic and the characteristics of its irradiation, it is possible to predict climate changes and the natural environment state in the Arctic on the basis of the characteristics of irradiation calculated for future time periods.

Snakin, V.V.

LOW-CARBON POWER AND GLOBAL CLIMATE WARMING

The problem of global climate warming and attempts to solve it, including using low-carbon power engineering, are analyzed. The success of solving this problem depends on the degree of understanding of the processes which cause it. As more and more data speak about natural causes of climate fluctuations, and of anthropogenic factors the greatest contribution to the warming is made by thermal pollution rather than the anthropogenic growth of carbon dioxide in the atmosphere, low-carbon power, with all its positive qualities, is unable to solve the problem of climate warming.

Bulatkin, G.A.

A model for calculating the impact of forests and wood use on the balance of C-CO2 in the Earth´s atmosphere

A new three-stage method for assessing the CO2 balance in plant communities was formulated. The methodology includes not only taking into account the absorption of C-CO2 during plantation vegetation, but also the processes occuring when using wood. In managed forests, when calculating the carbon balance, it is necessary to take into account the release of CO2 not only at direct, but also at indirect consumption of technical energy for laying plantations, caring for them, and felling for final use. As a model, the consumption of technical energy in cultivating natural and genetically modified forms of aspen Populus tremula L. was calculated. The large role of indirect expenditure of technical energy in the C-CO2 balance in forest plantations is shown. The use of a genetically modified clone of aspen significantly increases the productivity of plantations and CO2 absorption from the atmosphere compared to its natural form. On a long time scale the final amount of CO2 runoff from the atmosphere depends not only on the area of forests and their productivity, but also on the way of using wood. There is a highly effective way of using forest plantations to regulate the carbon dioxide content in the atmosphere, which is currently little paid attention, namely, the so-called substitution effect. Replacing energy-intensive materials (reinforced concrete, plastic, metal, and brick) with wood may be one of the main ways for the positive impact of forests on the CO2 content in the atmosphere. The use of wood biomass from thinning, wood processing wastes, short-rotation forests for heat and power generation is a great reserve for replacing fossil hydrocarbons. The forest area needs to be expanded to increase wood production to replace energy-intensive building materials and generate biofuels.