SCENARIO FORECASTS OF THE CASPIAN SEA FLUCTUATIONS IN THE LEVEL UNDER CLIMATIC AND MAN-MADE IMPACTS ON THE SEA WATER BALANCE

Authors

  • A. V. Frolov Water Problems Institute of RAS

DOI:

https://doi.org/10.29006/1564-2291.JOR-2019.47(5).10

Keywords:

scenario forecasts, long-term fluctuations in the Caspian sea level, nonlinear hydrological system, Fokker-Plank-Kolmogorov equation, probability distribution density, bimodality, Kara-Bogaz-Gol

Abstract

The paper deal with the scenario method for predicting long-term fluctuations in the Caspian Sea level. The scenario forecasts are included:

  • Model of the sea level fluctuations mechanism,
  • Models of the main components of the sea water balance,
  • Morphometric characteristics of sea,
  • Dependence between the outflow of water into the Kara-Bogaz-Gol Bay and the sea level,
  • Assessments of possible direct technogenic impacts on the sea water balance, for example, the withdrawals of water from the inflow into the sea.

The Caspian Sea level long-term fluctuations are considered by us as the output process of a non-linear hydrological system. The mechanism of the Caspian level fluctuations contains two negative and one positive feedback. The dependences of the Caspian sea area and the outflow from the sea into the Kara-Bogaz-Gulf bay on the sea level form negative feedbacks. Positive feedback is formed by the nonlinear dependence of evaporation from the sea area on the sea level. Under certain conditions, the effect of this dependence can lead to the sea level bimodal probability distribution density. A necessary (but not sufficient) condition for bimodality is the absence of free seawater inflow from the sea into Kara-Bogaz-Gol. The results of scenario forecasts of the Caspian Sea level developed within the framework of the Caspian Federal Targeted Program (1994-95) are presented. The linear and nonlinear models of the sea level fluctuations used in scenario forecasts are discussed. Failure to take into account of any kind of the feedbacks leads to incorrect predictive estimates of the sea level fluctuations statistical characteristics.

References


  1. Arpe K. and Leroy S.A. The Caspian sea level forced by the atmospheric circulation, as observed and modeled. Quatern. Int., 2007, 173–174, pp. 144–152.

  2. Arpe K., Leroy S.A.G., Lahijani H., and Khan V. Impact of the European Russia drought in 2010 on the Caspian Sea level. Hydrology and Earth System Sciences, 2012, Vol. 16, pp. 19–27, doi: 10.5194/hess-16-19-2012.

  3. Chen J.L., Pekker T., Wilson C.R., Tapley B.D., Kostianoy A.G., Cretaux J.-F., and Safarov E.S. Longterm Caspian Sea level change. Geophysical Research Letters, 2017, Vol. 44, pp. 6993–7001, doi: 10.1002/2017GL073958.

  4. Dobrovol’skiy S.G. Klimaticheskie izmeneniya v sisteme «gidrosfera-atmosfera» (Climatic changes in the system “hydrosphere-atmosphere”). Moscow: GEOS, 2002, 230 p.

  5. Elguindi N. and Giorgi F. Simulating future Caspian Sea level changes using regional climate model outputs. Climate Dynamics, 2007, Vol. 28, pp. 365–379.

  6. Elguindi N., Somot S., Dequ M., and Ludwig W. Climate change evolution of the hydrological balance of the Mediterranean, Black and Caspian Seas: impact of climate model resolution. Clim. Dynam., 2011, Vol. 36, pp. 205–228.

  7. Frolov A.V. Modelirovanie mnogoletnikh kolebaniy urovnya Kaspiyskogo morya: teoriya i prilocheniya (Simulation of the long-term fluctuations in the level of the Caspian Sea: theory and applications). Moscow: Geos, 2003, 170 p.

  8. Frolov A.V. Modelirovanie vliyaniya ottoka v zaliv Kara-Bogaz-Gol na plotnost” raspredeleniya veroyatnosti urovnya Kaspiyskogo moray (Modeling of the impact of the outflow to KaraBogaz-Gol Bay on the Caspian Sea level probability density distribution). Matematicheskoe modelirovanie i chislennye metody, 2016, No. 3 (11), pp. 79–92.

  9. Frolov A.V. The Caspian Sea as Stochastic Reservoir. Hydrological Models for Environmental Management. NATO Science Series 2. Environmental Security. Vol. 2. Dordrecht, Boston, London: Kluwer Acad. Publishers, 2002, pp. 91–108.

  10. Frolov A.V., Zil’bershteyn O.I., and Muzylev S.V. Osobennosti rascheta ekstremal’nyx urovney v pribrechno–shel’fovoy zone Kaspiyskogo moray (Features of the calculation of extreme levels in the coastal-shelf zone of the Caspian Sea). Ekologicheskie problemy Kaspiya. Sbornik.dokladov. mechdunarjdnogo. nauchnogo. seminara po ekologicheskim problemam prikaspiyskogo regiona. 1–3 dek. 1999 g. Moskva. Eds M.G. Khublaryana. Moscow– Kirov: 2000, pp. 176–180.

  11. GholamReza R., Masumeh M., and Grab S. Modeling Caspian Sea water level oscillations under different scenarios of increasing atmospheric carbon dioxide concentrations. Iranian Journal of Environmental Health Science & Engineering, 2012, Vol. 9, 24 p. http://www.ijehse.com/content/9/1/24.

  12. Gidrometeorologicheskie aspekty problemy Kaspiyskogo morya i ego basseyna. Pod redactsiey I.A. Shiklomanova i A.S.Vasil’eva. (Hydrometeorological aspects of the Caspian Sea and its basin, Ed by I.A. Shiklomanov and A.S. Vasil’ev. Sankt-Petersburg: Gidrometeoizdat, 2003, 400 p.

  13. Ginzburg A.I. and Kostianoy A.G. Tendentsii izmenenij gidrometeorologicheskih parametrovKaspijskogo morja v sovremennyj period (1990 – 2017). (Trends in the hydrometeorological parameters of the Caspian Sea in the modern period (1990 – 2017), Sovremennye problemy distantsionnogo zondirovanija Zemli iz kosmosa, 2018, Vol. 15, No. 7, pp. 195–207.

  14. Golitsyn G.S., Moxov I.I., and Hon V.CH. Diagnostika i modelirovanie gidrologicheskogo rechima v basseyne Kaspiyskogo moray (Diagnostics and modeling of the hydrological regime in the Caspian Sea basin). Ekologicheskie problemy Kaspiya. Sbornik.dokladov. mechdunarjdnogo. nauchnogo. seminara po ekologicheskim problemam prikaspiyskogo regiona, 1–3 dek. 1999, Moscow, Pod redaktsiey M.G. Khublaryana, Moscow–Kirov: 2000, pp. 28–37.

  15. Golitsyn G.S., Ratkovich D.YA., Fortus M.I., and Frolov A.V. O sovremennom pod”eme urovnya Kaspiyskogo moray (On the modern rise of the level of the Caspian Sea). Vodnye resursy, 1998, Vol. 25, No. 2, pp. 133–139.

  16. Ismajylov G.H. and Muraschenkova N.V. Izmenchivost’ stoka reki Volgi v pervoj polovineXXI veka c uchetom vozmozhnogo izmenenija klimata. (Variability of the Volga River runoff in the first half of the 21st century, taking into account possible climate change, Environmental Engineering). Prirodoobustrojstvo, 2015, Vol. 4, p. 66–72.

  17. Kaspijskoe more. Gidrologija i gidrohimija. Pod. red. S.S. Bajdina i A.N. Kosareva. (The Caspian Sea. Hydrology and hydrochemistry. Eds. S.S. Baydin and A.N. Kosarev), Moscow: Nauka, 1986, 261 p.

  18. Khublaryan M.G. and Naydenov V.I. O teplovom mehanizme kolebaniy urovnya vodoemov (On the thermal mechanism of fluctuations in the level of water bodies). DAN SSSR, 1991, Vol. 319, No. 6, pp. 1438–1444.

  19. Kislov A., Panin A., and Toropov P. Current status and palaeostages of the Caspian Sea as a potential evaluation tool for climate model simulations. Quaternary International, 2014, Vol. 345, pp. 48–55.

  20. Klemeš V. Physically based stochastic hydrologic analysis. Advances in Hydroscience, 1978, Vol. 11, pp. 285–356.

  21. Kosarev A.N., Kostianoy A.G., and Zonn I.S. Kara-Bogaz-Gol Bay: Physical and Chemical Evolution. Aquatic Geochemistry, 2009, Vol. 15, No. 1–2, Special Issue: Saline Lakes and Global Change, pp. 223–236.

  22. Kostianoy A.G., Lebedev S.A., and Solovyov D.M. Satellite monitoring of the Caspian Sea, Kara-Bogaz-Gol Bay, Sarykamysh and Altyn Asyr Lakes, and Amu Darya River. – In: The Turkmen Lake Altyn Asyr and Water Resources in Turkmenistan, (Eds.) Zonn I.S., A.G. Kostianoy, Berlin, Heidelberg, New York: Springer-Verlag, 2014, Vol. 28. pp. 197–232.

  23. Kritskiy S.N. and Menkel’ M.F. Nekotorye polocheniya statisticheskoy teorii kolebaniy urovney estestvennyh vodoemov i ih primenenie k issledovaniю rechima Kaspiyskogo morya (Some provisions of the statistical theory of fluctuations in the levels of natural water bodies and their application to the study of the Caspian Sea regime). Trudy Pervogo soveshaniya po regulиrovaniyu stoka, Moscow–Leningrd: Izdatelstvovo AN SSSR, 1946, pp. 76–93.

  24. Lebedev S.A. and Kostianoy A.G. Sputnikovaya al’timetriya Kaspiiskogo morya (Satellite altimetry of the Caspian sea). Moscow: More, 2005, 366 p.

  25. Malinin V.N. Problema prognoza urovnya Kaspiyskogo moray (The problem of forecasting the level of the Caspian Sea). Sankt- Petersburg: RGMI, 1994, 158 p.

  26. Muzylev S.V., Prival‘skiy V.E., and Ratkovich D.Ya. Stohasticheskie modeli v inchenernoy gidrologii (Stochastic models in engineering hydrology). Moscow: Nauka, 1982, 283 p.

  27. Panin A.V. and Selezneva E.V. Vodnobalansovye harakteristiki Paleokaspija na osnove novoj gipsograficheskoj krivoj. Teoreticheskie problemy sovr. geomorfologii, teorija i praktika izuchenija geomorfologicheskih sistem. (Water-balance characteristics of the Paleocaspian on the basis of a new gypsographic curve, Theoretical problems sovr. geomorphology, theory and practice of studying geomorphological systems). Proc. of the XXXI Plenum of the Geomorphological Commission of the Russian Academy of Sciences, Astrakhan, October 5–9, 2011. Part I. Astrakhan: Technograd, 2011, pp. 77–82.

  28. Panin G.N. Isparenie i teploobmen Kaspiyskogo moray (Evaporation and heat exchange of the Caspian Sea). Moscow: Nauka, 1987, 88 p.

  29. Proekt “Morya”. Gidrometeorologiya i gidrokhimiya morei. Tom VI. Kaspiiskoe more. Vyp. 1 Gidrometeorologicheskie usloviya (Hydrometeorology and hydrochemistry of the seas. Vol. 6 The Caspian Sea. Issue 1, Hydrometeorological conditions, Ed. Terziev F.S.), St. Petersburg: Gidrometeoizdat, 1992, 358 p.

  30. Rychagov G.I. Prognoz urovnya Kaspiyskogo morya na osnove paleogeograficheskih rekonstruktsiy (Forecast of the Caspian Sea level based on paleogeographic reconstructions). Vestnik MGU, Seriya 5, Geografiya, 1994, No. 3, pp. 71–76.

  31. Shiklomanov I.A., Georgievskij V.Ju., and Ezhov A.V. Verojatnostnyj prognoz urovnja Kaspijskogo morja. V monografii «Vodnye resursy Rossii ih ispol’zovanie». Pod red. I.A. Shiklomanova. (Probabilistic forecast of the Caspian Sea level. In the monograph «Water resources of Russia their use.» Ed. I.A. Shiklomanov. Sankt-Petersburg: State Hydrological Institute, 2008, pp. 327–341.

  32. Terziev F.S. and Nikonova R.E. Nekotorye itogi izucheniya sovremennogo gidrometeorologicheskogo rechima Kaspiyskogo morya i perspektivy dal”neyshix issledovaniy. Gidrometeorologicheskie aspekty probлemy Kaspiyskogo morya i ego basseyna. Eds. I.A. Shiklomanov and A.S. Vasil’ev. (Some results of studying the Caspian Sea modern hydrometeorological regime and prospects for further research). Sankt-Petersburg: Gidrometeoizdat, 2003, pp. 239–253.

  33. Velitchko A.A., Klimanov V.A., and Belyaev A.V. Rekonstruktsiya stoka Volgi i vodnogo balansa Kaspiya v optimumy mikulinskogo mechlednikov”ya i golotsena (Reconstruction of the Volga runoff and the Caspian water balance into the optimum of the Mikulinsky interglacial and Holocene). Izvestiya AN SSSR, Seria geografitcheskaya, 1988, No. 1, pp. 27–37.

  34. Vodnyy balans i kolebaniya urovnya Kaspiyskogo morya. Modelirovanie i prognoz. Pod redactsiey E.S. Nesterova. (Water balance and fluctuations in the level of the Caspian Sea. Modeling and forecast, Ed. by E.S. Nesterov). Moscow: Triada Ltd, 2016, 378 p.

  35. Zil’bershteyn O.I., Verbitskaya O.A., Popov S.K., and Lobov A.L. Metod prognoza shtormovyx nagonov dlya Severnogo Kaspiya na osnove dannyx regional”noy modeli atmosfery, Pod redaktsiey I.A. Shiklomanova i A.S. Vasil”eva (The method of forecasting storm surges for the North Caspian Sea based on data from a regional atmospheric model, Eds. I.A. Shiklomanov and A.S. Vasil”ev). Gidrometeorologicheskie aspekty problemy Kaspiyskogo morya i ego basseyna, Sankt–Petersburg: Gidrometeoizdat, 2003, pp. 327–341.

  36. Zonn I.S., Kostianoy A.G., Kosarev A.N., and Glantz M. The Caspian Sea Encyclopedia. Berlin, Heidelberg, New York: Springer-Verlag, 2010, 527 p.

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Published

2019-12-23

Issue

Vol. 47 No. 5 (2019): Journal of Oceanological Research

Section

International Round Table “The Future of the Caspian: Research Projects and Stud

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Transfer of copyrights occurs on the basis of a license agreement between the Author and Shirshov Institute of Oceanology, RAS