Earth Insolation and Tendencies of the Variation of Alpine Ice Resources

Fedorov, V.M.; Grebennikov, P.B.; Frolov, D.M.

Авторы: Fedorov V.M., Grebennikov P.B., Frolov D.M.
Журнал: Geography and Natural Resources
Том: 42
Номер: 4
Год издания: 2021
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 297
Последняя страница: 305
Оригинальные версии: Инсоляция Земли и тенденции изменения ледовых ресурсов Альп
DOI: 10.1134/S1875372821040065
Аннотация: Based on high-precision astronomical ephemerides with high spatial and temporal resolution the Earth's insolation at the upper atmosphere boundary was calculated for the period from 3000 BC to 2999 BC. Differences from the previously performed calculations are related, first, to the initial astronomical data, second, to the different solution of the insolation calculations relative to the shape of the Earth, and third, to the time interval covered by the calculations. Our insolation calculations are based on high-precision ephemerides so that time interval of 5999 years and the entire surface of the Earth are covered in more detail. The Earth is not identified with a sphere, but is approximated by an ellipsoid. Previous calculations of high-frequency variations of insolation were performed for individual Parallels (in space), and in time for individual points of the year (equinoxes and solstices). Our calculations are made for the surface of latitudinal zones in 1° latitude and time intervals equal to 1/360 of the duration of a tropical year. It is determined that the long-term variability of the total mass balance of Alpine glaciers on average by 94.3% is taken into account by the trend. The trend of reduction of Alpine glaciers by an average of 90.6% is determined by the annual insolation contrast-reflecting an increase in the meridional heat transfer determined by an increase in the meridional contrast of radiant energy (on the Earth's surface without taking into account the atmosphere). The forecast of changes in the total mass balance of glaciers up to 2050 indicates a catastrophic development of degradation of the modern glaciation of the Alps.
Добавил в систему: Федоров Валерий Михайлович

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