УДК: 551.511.13

Monitoring the earth’s energy balance from Lagrange point L1

Abdusamatov, K.I., Lapovok, E.V., Khankov, S.I.

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Абдусаматов Х.И., Лаповок Е.В., Ханков С.И. Мониторинг энергетического баланса Земли из точки Лагранжа L1 // Оптический журнал. 2014. Т. 81. № 1. С. 25–31.

Abdusamatov Kh.I., Lapovok E.V., Khankov S.I. Monitoring the earth’s energy balance from Lagrange point L1 [in Russian] // Opticheskii Zhurnal. 2014. V. 81. № 1. P. 25–31.

For citation (Journal of Optical Technology):

Kh. I. Abdusamatov, E. V. Lapovok, and S. I. Khankov, "Monitoring the earth’s energy balance from Lagrange point L1," Journal of Optical Technology. 81(1), 18-23 (2014). https://doi.org/10.1364/JOT.81.000018

Abstract:

This paper describes a method of monitoring the variations of the earth’s energy balance from Lagrange point L1. The method is based on measurements of the variation of the solar constant in the complete spectral range and of the earth’s radiation flux in the spectral ranges 0.2–100 μm, 8–13 μm, and a number of other ranges. The threshold sensitivity of a telescope with entrance-pupil diameter 400 mm must equal 10−7 W for a dynamic range of four orders. The method makes it possible to record variations of the Bond albedo at the 0.1% level, and this corresponds to a temperature variation of the earth by 0.03 K, taking into account the variation of the solar constant. It is shown how the increments of the Bond albedo, the specific power of solar radiation absorbed by the planet, and the planetary temperature depend on the variation of the albedo of the atmosphere and the earth’s surface and the transmission of solar radiation by the atmosphere.

Keywords:

Lagrange point, earth’s energy balance, solar constant, Bond albedo

OCIS codes: 120.4640, 120.0280, 350.1246, 350.6050, 350.6090

References:

1. Kh. I. Abdusamatov, “Two hundred years of decrease of the solar constant results in an unbalanced thermal budget of the earth and deep cooling of the climate,” Kinemat. Fiz. Nebes. Tel 28, No. 2, 22 (2012).
2. F. P. J. Valero, J. Herman, P. Minnis, W. D. Collins, R. Sadourny, W. Wiscombe, D. Lubin, and K. Ogilvie, “Triana—a deep space earth and solar observatory. Report prepared for the National Academy of Sciences,” http://www‑pm.larc.nasa.gov/triana/NAS.Triana.report.12.99.pdf.
3. G. L. Smith, “Simulation of full Earth disc measurement at L-1 of reflected solar radiation,” in Fifth Conference on Sensors, Systems and NextGeneration Satellites, EOS/SPIE Symposium, University of Florence, 20–24 Sept. 1999.
4. H. I. Abdussamatov, A. I. Bogoyavlenskii, S. I. Khankov, and E. V. Lapovok, “The influence of the atmospheric transmission for the solar radiation and earth’s surface radiation on the earth’s climate,” J. Geogr. Inf. Syst. 2, 194 (2010).
5. K. E. Trenberth, J. T. Fasullo, and J. Keihl, “Earth’s global energy budget,” Bull. Am. Meteorol. Soc. 90, 311 (2009).