ENSO事件对珠江中下游地区降水氢氧同位素的影响

doi:10.31497/zrzyxb.20191116

摘要/Abstract

摘要： 水汽源区变化与ENSO事件显著影响季风区水循环过程。基于珠江中下游地区4个GNIP站点（中国香港、广州、桂林、柳州）的降水同位素及OLR（向外长波辐射）数据,研究了ENSO背景下δ¹⁸O的时空分布特征及ENSO事件对降水中氢氧同位素特征的影响机制。结果表明：ENSO事件是影响稳定同位素年际差异的主要因素,通过影响雨季降水的年内分配而实现;正常年大气降水线方程的斜率与截距均大于厄尔尼诺年而小于拉尼娜年;拉尼娜年加强 δ¹⁸O的反温度效应,厄尔尼诺年减弱反温度效应;厄尔尼诺与拉尼娜年热带辐合带的变化规律呈现出相反的趋势,其OLR场的变化与研究区稳定同位素特征有着较强的对应关系;ENSO事件年不同的水汽源区相对湿度特征是造成d值年际差异的主要因素。

关键词: OLR场, 珠江中下游地区, 稳定同位素, ENSO, ITCZ

Abstract: The characteristics of stable isotopes in precipitation are influenced by moisture transport path, rainfall amount, temperature, humidity, elevation and so on. El Niño-Southern Oscillation (ENSO) is one of the strongest signals of Global Coupled Ocean-Atmosphere and an important factor influncing the inter-annual climate change. The variation of moisture sources and the ENSO events prominently affect the processes of hydrological cycle and characteristics of precipitation isotope in the East Asian monsoon region. Based on the isotopic values of precipitation and Outgoing Longwave Radiation (OLR) data from four stations of GNIP (Hong Kong, Guangzhou, Guilin, Liuzhou) in the middle and lower reaches of the Pearl River, the spatial distribution and temporal characteristics of δ¹⁸O in precipitation were studied under the background of ENSO. The results show that the ENSO event was the main factor which affected the inter-annual variation of stable isotopes in precipitation in the middle and lower reaches of the Pearl River by impacting the annual distribution of precipitation especially in the rainy season. The slope and intercept of the Meteoric Water Line in normal year were larger than those in El Nino year and smaller than those in La Niña year. La Niña year highlighted the strong characteristics of marine climate. The δ¹⁸O in precipitation showed anti-temperature effect. This phenomenon was strengthened in La Niña year and weakened in El Niño year. The position of Intertropical Convergence Zone (ITCZ) in moisture sources, intensity of convective activity and the process of air mass migration largely determined the characteristics of stable isotopes. The scope and strength of ITCZ in La Niña and El Niño years showed the opposite trend. The variation of OLR field had a strong correspondence with the stable isotope characteristics in the study region. There was a significant negative correlation between d-excess and the intensity of ENSO events. The relative humidity characteristic of moisture sources in different ENSO events was the main factor causing the inter-annual difference of the d-excess. This research, focusing on the effect of ENSO events on the hydrogen and oxygen isotopic characteristics of precipitation in the middle and lower reaches of the Pearl River, was helpful to understand the moisture sources and the changes of precipitation process in China's monsoon region, and to further promote the research on the mechanism of water circulation in monsoon region.

Key words: OLR field, the middle and lower reaches of the Pearl River, stable isotopes, ENSO, ITCZ

郭政昇, 郑国璋, 曹富强, 赵培, 肖杰. ENSO事件对珠江中下游地区降水氢氧同位素的影响[J]. 自然资源学报, 2019, 34(11): 2454-2468.

GUO Zheng-sheng, ZHENG Guo-zhang, CAO Fu-Qiang, ZHAO Pei, XIAO Jie. Influence of ENSO events on the hydrogen and oxygen isotopes of precipitation in the middle and lower reaches of Pearl River[J]. JOURNAL OF NATURAL RESOURCES, 2019, 34(11): 2454-2468.

参考文献

[1] 许涛, 蔡健榕, 孙晓双, 等. 台风“杜鹃”降水δ¹⁸O的云雨区效应初探. 自然资源学报, 2018, 33(12): 2238-2248.
[XU T, CAI J R, SUN X S, et al.A tentative study of "cloudy and rainy area effect" of the δ¹⁸O in the precipitation of Typhoon "Dujuan". Journal of Natural Resources, 2018, 33(12): 2238-2248.]
[2] 姚檀栋, 朴世龙, 沈妙根, 等. 印度季风与西风相互作用在现代青藏高原产生连锁式环境效应. 中国科学院院刊, 2017, 32(9): 976-984.
[YAO T D, PIAO S L, SHEN M G, et al.Chained impacts on modern environment of interaction between Westerlies and Indian Monsoon on Tibetan Plateau. Bulletin of Chinese Academy of Sciences, 2017, 32(9): 976-984.]
[3] PENG T R, WANG C H, HUANG C C, et al.Stable isotopic characteristic of Taiwan's precipitation: A case study of western Pacific monsoon region. Earth & Planetary Science Letters, 2010, 289(3-4): 357-366.
[4] BREITENBACH S F M, ADKINS J F, MEYER H, et al. Strong influence of water vapor source dynamics on stable isotopes in precipitation observed in Southern Meghalaya, NE India. Earth and Planetary Science Letters, 2010, 292(1-2): 212-220.
[5] 赵侃, 陈仕涛, 崔英方, 等. 神农架石笋记录的近200年东亚季风变化及其ENSO响应. 地理研究, 2015, 34(1): 74-84.
[ZHAO K, CHEN S T, CUI Y F, et al.East Asian monsoon changes and its ENSO response revealed by a 200-year stalagmite record from Yongxing Cave on the Mountain Shennongjia. Geographical Research, 2015, 34(1): 74-84.]
[6] KURITA N.Water isotopic variability in response to mesoscale convective system over the tropical ocean. Journal of Geophysical Research Atmospheres, 2013, 118(18): 10376-10390.
[7] TREMOY G, VIMEUX F, MAYAKI S, et al.A1-year long δ¹⁸O record of water vapor in Niamey (Niger) reveals insightful atmospheric processes at different timescales. Geophysical Research Letters, 2012, 39(8): 85-93.
[8] VIMEUX F, TREMOY G, RISI C, et al.A strong control of the South American SeeSaw on the intra-seasonal variability of the isotopic composition of precipitation in the Bolivian Andes. Earth & Planetary Science Letters, 2011, 307(1-2): 47-58.
[9] GAO J, MASSON-DELMOTTE V, YAO T, et al.Precipitation water stable isotopes in the South Tibetan Plateau: Observations and modeling. Journal of Climate, 2011, 24(13): 3161-3178.
[10] HE Y, RISI C, GAO J, et al.Impact of atmospheric convection on South Tibet summer precipitation isotopologue composition using a combination of in situ measurements, satellite data, and atmospheric general circulation modeling. Journal of Geophysical Research Atmospheres, 2015, 120(9): 3852-3871.
[11] 薛积彬, 钟巍, 赵引娟, 等. 珠江三角洲地区降水中δ¹⁸O的变化特征及与ENSO的关系. 地理科学, 2007, 27(6): 825-830.
[XUE J B, ZHONG W, ZHAO Y J, et al.Variations of δ¹⁸O in precipitation in the Zhujiang (Pearl) River delta and its relationship with ENSO event. Scientia Geographica Sinica, 2007, 27(6): 825-830.]
[12] 黄一民, 宋献方, 章新平, 等. 洞庭湖流域降水同位素与ENSO关系研究. 地理科学, 2017, 37(5): 792-798.
[HUANG Y M, SONG X F, ZHANG X P, et al.Relationship of stable water isotopes in precipitation with ENSO in Dongting Lake Basin. Scientia Geographica Sinica, 2017, 37(5): 792-798.]
[13] 董小芳, 杨华玮, 张峦, 等. ENSO事件对上海降水中氢氧同位素变化的影响. 环境科学, 2017, 38(12): 4991-5003.
[DONG X F, YANG H W, ZHANG L, et al.Influence of ENSO events on the hydrogen (δ²H) and oxygen (δ¹⁸O) isotopic values of precipitation in Shanghai. Environmental Science, 2017, 38(12): 4991-5003.]
[14] 郭政昇, 郑国璋, 赵培, 等. 水汽源区变化对黄河中游降水稳定同位素的影响. 自然资源学报, 2018, 33(11): 1979-1991.
[GUO Z S, ZHENG G Z, ZHAO P, et al.Effect of variation in water source area on stable isotopes in precipitation in the middle reach of the Yellow River Basin. Journal of Natural Resources, 2018, 33(11): 1979-199.]
[15] VINCENT D G, FINK A, SCHRAGE J M, et al.High- and low-frequency intraseasonal variance of OLR on annual and ENSO timescales. Journal of Climate, 2010, 11(5): 968-986.
[16] KASKAOUTIS D G, HOUSSOS E E, SOLMON F, et al.Impact of atmospheric circulation types on Southwest Asian dust and Indian summer monsoon rainfall. Atmospheric Research, 2018, 2(1): 189-205.
[17] CHAUDHARI H S, HAZRA A, POKHREL S, et al.SST and OLR relationship during Indian summer monsoon: A coupled climate modelling perspective. Meteorology and Atmospheric Physics, 2018, 130(2): 211-225.
[18] TANG Y, PANG H, ZHANG W, et al.Effects of changes in moisture source and the upstream rainout on stable isotopes in precipitation: A case study in Nanjing, eastern China. Hydrology and Earth System Sciences, 2015, 12(4): 3919-3944.
[19] 刘丙军, 陈晓宏, 曾照发. 珠江流域下游地区降水空间分布规律研究. 自然资源学报, 2010, 25(12): 2123-2131.
[LIU B J, CHEN X H, ZENG Z F.Spatial distribution law of rainfall in the lower reaches of the Pearl River Basin. Journal of Natural Resources, 2010, 25(12): 2123-2131.]
[20] 尹焕玲, 钟巍, 马巧红, 等. 极端天气事件下广州市大气降水δ¹⁸O的变化特征研究. 华南师范大学学报: 自然科学版, 2012, 44(4): 121-127.
[YIN H L, ZHONG W, MA Q H, et al.Variational characteristics of δ¹⁸O in precipitation in Guangzhou under extreme weather events. Journal of South China Normal University: Natural Science Edition, 2012, 44(4): 121-127.]
[21] XIE L, WEI G, DENG W, et al.Daily δ¹⁸O and δD of precipitations from 2007 to 2009 in Guangzhou, South China: Implications for changes of moisture sources. Journal of Hydrology, 2011, 400(3-4): 477-489.
[22] 涂林玲, 王华, 冯玉梅. 桂林地区大气降水的D和¹⁸O同位素的研究. 中国岩溶, 2004, 23(4): 304-309.
[TU L L, WANG H, FENG Y M.Research on D and ¹⁸O isotope in the precipitation of Guilin. Carsologica Sinica, 2004, 23(4): 304-309.]
[23] 吴夏, 朱晓燕, 张美良, 等. 大气降水中稳定同位素组成的高分辨率记录: 以桂林地区为例. 长江流域资源与环境, 2013, 22(2): 182-188.
[WU X, ZHU X Y, ZHANG M L, et al.High resolution stable isotope record of atmospheric precipitation in Guilin. Resources and Environment in the Yangtze Basin, 2013, 22(2): 182-188.]
[24] 陈虹颖, 徐峰, 李晓惠, 等. 近65年ENSO事件强度变化及时频特征研究. 热带气象学报, 2017, 33(5): 683-694.
[CHEN H Y, XU F, LI X H, et al.Intensities and time-frequency variability of ENSO in the last 65 years. Journal of Tropical Meteorology, 2017, 33(5): 683-694.]
[25] 郭政昇, 王娟, 赵培. 珠江流域大气降水稳定性氢氧同位素特征. 水文, 2017, 37(2): 78-82.
[GUO Z S, WANG J, ZHAO P.Characteristics of hydrogen and oxygen stable isotopes in precipitation in Pearl River Basin. Journal of China Hydrology, 2017, 37(2): 78-82.]
[26] YURTSEVER Y, GAT J R.Atmospheric waters. In: GAT J R, GON-FIANTINI R, eds. Stable isotope hydrology: Deuterium and oxygen-18 in the water cycle. Vienna: International Atomic Energy Agency, 1981: 103-142.
[27] LIU J, SONG X, YUAN G, et al.Stable isotopic compositions of precipitation in China. Tellus B: Chemical and Physical Meteorology, 2014, 66(1): 39-44.
[28] 柳鉴容, 宋献方. 中国东部季风区大气降水δ¹⁸O的特征及水汽来源. 科学通报, 2009, 54(22): 3521-3531.
[LIU J R, SONG X F.Characteristics of δ¹⁸O in precipitation over Eastern Monsoon China and the water vapor sources. Chinese Science Bulletin, 2009, 54(22): 3521-3531.]
[29] ZHANG M, WANG S.A review of precipitation isotope studies in China: Basic pattern and hydrological process. Journal of Geographical Sciences, 2016, 26(7): 921-938.
[30] 张冲. 1950年以来ENSO事件对我国气候影响研究. 西安: 陕西师范大学, 2012.
[ZHANG C.Impact of ENSO events on China's climate since 1950. Xi'an: Shaanxi Normal University, 2012.]
[31] 张辅成. 深圳与香港及广州气温、降水相关的分析. 气象, 1989, 15(6): 43-45.
[ZHANG F C.Analysis of temperature and precipitation in Shenzhen and Hongkong and Guangzhou. Meteorological Monthly, 1989, 15(6): 43-45.]
[32] ROPELEWSKI C F, HALPERT M S.Global and regional scale precipitation patterns associated with the El Niño/Southern Oscillation. Monthly Weather Review, 2013, 115(8): 985-996.
[33] 孙从建, 张子宇, 李捷, 等. 青藏高原西北部大气降水稳定同位素时空特征变化. 山地学报, 2018, 36(2): 217-228.
[SUN C J, ZHANG Z Y, LI J, et al.Temporal and spatial characteristics of stable isotopes of atmospheric precipitation in the northwestern Tibetan Plateau. Mountain Research, 2018, 36(2): 217-228.]
[34] DANSGAARD W.Stable isotopes in precipitation. Tellus, 1964, 15(4): 436-468.
[35] 李广, 章新平, 宋松, 等. 中国不同水体中δD与δ¹⁸O研究进展. 气象与环境学报, 2016, 32(4): 132-138.
[LI G, ZHANG X P, SONG S, et al.Research progress of δD and δ¹⁸O in different water bodies in China. Journal of Meteorology and Environment, 2016, 32(4): 132-138.]
[36] JOUZEL J, MERLIVAT L.Deuterium and oxygen 18 in precipitation: Modeling of the isotopic effects during snow formation. Journal of Geophysical Research Atmospheres, 1984, 89(D7): 11749-11757.
[37] 王钦, 李双林, 付建建, 等. 1998和2010年夏季降水异常成因的对比分析: 兼论两类不同厄尔尼诺事件的影响. 气象学报, 2012, 70(6): 1207-1222.
[WANG Q, LI S L, FU J J, et al.On the formation of anomalous summer precipitation in the years of 2010 and 1998: A comparison of the El Niño's impact between modoki and typical El Niño case. Acta Meteorologica Sinica, 2012, 70(6): 1207-1222.]