Climatology interpretation of rainfall δ18Op across the southern Greater Caucasus region

WANG Tao; LI Tingyong; ZHANG Jian

doi:10.11932/karst20200309

Volume 39 Issue 3

Jun. 2020

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WANG Tao, LI Tingyong, ZHANG Jian. Climatology interpretation of rainfall δ18Op across the southern Greater Caucasus region[J]. CARSOLOGICA SINICA, 2020, 39(3): 432-441. doi: 10.11932/karst20200309

Citation:

WANG Tao, LI Tingyong, ZHANG Jian. Climatology interpretation of rainfall δ18Op across the southern Greater Caucasus region[J]. CARSOLOGICA SINICA, 2020, 39(3): 432-441. doi: 10.11932/karst20200309

WANG Tao, LI Tingyong, ZHANG Jian. Climatology interpretation of rainfall δ18Op across the southern Greater Caucasus region[J]. CARSOLOGICA SINICA, 2020, 39(3): 432-441. doi: 10.11932/karst20200309

Citation:

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Climatology interpretation of rainfall δ18Op across the southern Greater Caucasus region

doi: 10.11932/karst20200309

1.
Chongqing Key Laboratory of Karst Environment,School of Geographical Sciences, Southwest University, Chongqing 400715,China/State Cultivation Base of Eco-agriculture for Southwest Mountainous Land，Southwest University,Chongqing 408435, China
2.
Chongqing Key Laboratory of Karst Environment,School of Geographical Sciences, Southwest University, Chongqing 400715,China/State Cultivation Base of Eco-agriculture for Southwest Mountainous Land，Southwest University,Chongqing 408435, China/College of Tourism and Geography, Yunnan Normal University, Kunming，Yunnan 650050, China

Publish Date: 2020-06-25

Abstract

Abstract

Located between the Black sea and Caspian sea, the Great Caucasus are the boundary between Europe and Asia, where the climate is strongly influenced by the north Atlantic Oscillation (NAO). Based on data of six stations of the Global Network of Isotope in Precipitation (GNIP) in the south of the Great Caucasus, we analyzed seasonal variations of δ18Op as well as the relationship between δ18Op and local temperature, precipitation, and atmospheric circulation. Results show that， (1) On the monthly time scale, there is a significant positive correlation between the average monthly temperature and δ18Op (P < 0.01), which indicates that δ18Op in this region is mainly controlled by the local temperature, exhibiting a “temperature effect”. (2) The north Atlantic Oscillation (NAO) exerts influence on the variation of δ18Op by changing the intensity and position of the westerly wind. When the NAO is in a negative phase, the westerly wind transport is weaker, making δ18Op-rich from the Mediterranean able to arrive in the south of the Great Caucasus where the δ18Op value showing positive. While when NAO is in a positive phase, the westerly wind conveys strongly, bringing more precipitation with lighter δ18Op from the Black Sea. Therefore, the change of moisture transport path caused by NAO may be an important factor affecting the regional δ18Op in the south of the Great Caucasus, which should be taken into consideration when reconstructing the past NAO changes by using the geological δ18Op records in the region.
- atmospheric precipitation,
- δ18Op,
- north Atlantic Oscillation,
- water vapor source

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References(33)

References

[1]	Dansgaard W. Stable isotopes in precipitation［J］. Tellus, 1964，16(4): 436-468.
[2]	Rozanski K, Araguás-Araguás L, Gonfiantini R. Isotopic Patterns in Modern Global Precipitation［M］. Washington: American Geophysical Union， 1993：1-36.
[3]	Rozanski K, Araguás-Araguás L, Gonfiantini R. Relation between long-term trends of oxygen-18 isotope composition of precipitation and climate［J］.Science,1992，258(5084): 981-985.
[4]	Hoffmann G, Heimann M. Water isotope modeling in the Asian monsoon region［J］. J Quaternary International, 1997，37(2): 115-128.
[5]	Aragufis-Aragufis L, Froehlich K, Rozanski K. Stable isotope composition of precipitation over southeast Asia［J］. Journal of Geophysical Research Atmospheres, 1998，103(D22): 28721-28742.
[6]	Yamanaka T, Tsujimura M, Oyunbaatar D, et al. Isotopic variation of precipitation over eastern Mongolia and its implication for the atmospheric water cycle［J］. Journal of Hydrology, 2007，333(1): 21-34.
[7]	Tang Y, Pang H, Zhang W, et al. Effects of changes in moisture source and the upstream rainout on stable isotopes in summer precipitation-a case study in Nanjing, East China［J］. Hydrology and Earth System Sciences, 2015，12(4): 3919-3944.
[8]	Wang S, Zhang M, Crawford J, et al. The effect of moisture source and synoptic conditions on precipitation isotopes in arid central Asia［J］. Journal of Geophysical Research: Atmospheres, 2017，122(5): 2667-2682.
[9]	Krklec K, Domínguez-Villar D, Lojen S. The impact of moisture sources on the oxygen isotope composition of precipitation at a continental site in central Europe［J］. Journal of Hydrology, 2018，561: 810-821.
[10]	Cai Y, Chiang J C H, Breitenbach S F M, et al. Holocene moisture changes in western China, Central Asia, inferred from stalagmites［J］. Quaternary Science Reviews, 2017，158: 15-28.
[11]	Hurrell J W, Kushnir Y, Ottersen G, et al. An overview of the North Atlantic Oscillation［M］. Washington: American Geophysical Union, 2003.
[12]	Casado M, Ortega P, Masson-Delmotte V, et al. Impact of precipitation intermittency on NAO-temperature signals in proxy records［J］. Climate of the Past, 2013，9(2): 871-886.
[13]	Baldini L M, McDermott F, Foley A M, et al. Spatial variability in the European winter precipitation δ18O-NAO relationship: Implications for reconstructing NAO-mode climate variability in the Holocene［J］. Geophysical Research Letters, 2008， 35(4).
[14]	Field R D. Observed and modeled controls on precipitation δ18O over Europe: From local temperature to the Northern Annular Mode［J］. Journal of Geophysical Research, 2010， 115(D12）.
[15]	Sidorova O V, Siegwolf R T W, Saurer M, et al. Spatial patterns of climatic changes in the Eurasian north reflected in Siberian larch tree-ring parameters and stable isotopes［J］. Global Change Biology,2010， 16(3): 1003-1018.
[16]	Mischel S A, Scholz D, Sp?tl C. δ18O values of cave drip water: a promising proxy for the reconstruction of the North Atlantic Oscillation?［J］. Climate Dynamics, 2015，45(11-12): 3035-3050.
[17]	Wassenburg J A, Dietrich S, Fietzke J, et al. Reorganization of the North Atlantic Oscillation during early Holocene deglaciation［J］. Nature Geoscience, 2016， 9(8): 602-605.
[18]	Langebroek P M, Werner M, Lohmann G. Climate information imprinted in oxygen-isotopic composition of precipitation in Europe［J］. Earth and Planetary Science Letters, 2011， 311(1-2): 144-154.
[19]	Wu Z , Wang B , Li J , et al. An empirical seasonal prediction model of the east Asian summer monsoon using ENSO and NAO［J］. Journal of Geophysical Research Atmospheres, 2009, 114(D18).
[20]	Keggenhoff I, Elizbarashvili M, King L. Recent changes in Georgia?s temperature means and extremes: Annual and seasonal trends between 1961 and 2010［J］. Weather and Climate Extremes, 2015，8: 34-45.
[21]	Elizbarashvili M, Chartolani G, Khardziani T. Variations and trends of heating and cooling degree-days in Georgia for 1961—1990 year period［J］. Annals of Agrarian Science, 2018， 16(2): 152-159.
[22]	田立德，姚檀栋，White J W C，等. 喜马拉雅山中段高过量氘与西风带水汽输送有关［J］. 科学通报，2005，50(7): 669-672.
[23]	李佳芳，石培基，朱国锋，等．河西走廊中部大气降水δ18O变化特征及水汽输送［J］．环境科学学报，2015,35(4): 947-955.
[24]	Liu X, Rao Z, Zhang X, et al. Variations in the oxygen isotopic composition of precipitation in the Tianshan Mountains region and their significance for the Westerly circulation［J］. Journal of Geographical Sciences,2015， 25(7): 801-816.
[25]	Krklec K, Domínguez-Villar D., Quantification of the impact of moisture source regions on the oxygen isotope composition of precipitation over Eagle Cave, central Spain［J］. Geochimica Et Cosmochimica Acta,2014， 134(134): 39-54.
[26]	Brittingham A, Petrosyan Z, Hepburn J C, et al., Influence of the North Atlantic Oscillation on δD and δ18O in meteoric water in the Armenian Highland［J］. Journal of Hydrology,2019， 575: 513-522.
[27]	Craig H. Isotopic Variations in Meteoric Waters［J］. Science, 1961,， 133(3465): 1702-1703.
[28]	Stewart M K. Stable isotope fractionation due to evaporation and isotopic exchange of falling waterdrops: Applications to atmospheric processes and evaporation of lakes［J］. Journal of Geophysical Research, 1975， 80(9): 1133-1146.
[29]	Peng H, Mayer B, Norman A-L, et al. Modelling of hydrogen and oxygen isotope compositions for local precipitation［J］. Tellus B: Chemical and Physical Meteorology, 2005， 57(4): 273-282.
[30]	Pang Z, Kong Y, Froehlich K, et al. Processes affecting isotopes in precipitation of an arid region［J］. Tellus B: Chemical and Physical Meteorology, 2011， 63(3): 352-359.
[31]	Chen F, Zhang M, Wang S, et al. Relationship between sub-cloud secondary evaporation and stable isotopes in precipitation of Lanzhou and surrounding area［J］. Quaternary International, 2015， 380-381: 68-74.
[32]	Hurrell J W. Decadal trends in the north atlantic oscillation: regional temperatures and precipitation［J］. Science, 1995， 269(5224): 676-679.
[33]	Clarke M L, Rendell H M. Effects of storminess, sand supply and the North Atlantic Oscillation on sand invasion and coastal dune accretion in western Portugal［J］. The Holocene, 2006，16(3): 341-355.

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Climatology interpretation of rainfall δ18Op across the southern Greater Caucasus region

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