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| 1 | 中国西南地区降水中氧稳定同位素比率与相关气象要素之间关系的研究显示文摘分析了中国西南地区降水中稳定同位素比率与不同高度的温度、气压、湿度的关系以及影响该地区降水中稳定同位素比率的因子.在天气尺度下,蒙自、思茅、腾冲降水中δ18O与取样时的降水量、水汽压、大气水汽总量均存在显著的负相关关系;与各标准层(400,500,700,850hPa)的日平均温度存在显著的负相关关系,这个结果与中高纬度内陆区存在的显著温度效应不同.另外发现,降水中δ18O与各标准层大气的温度露点差△Td存在显著的正相关关系.在年尺度下,昆明站的年加权平均δ18O不仅与年降水量存在一定程度的负相关关系,并且与500 hPa的年平均温度存在显著的负相关关系.在夏季风异常强盛的年份,更多来自低纬度海洋的暖湿空气通过中国的西南水汽通道向北输送,并在沿途形成异常的强降水.异常强的凝结过程将释放更多的凝结潜热加热大气,使降水时的大气温度升高.伴随降水量的增加,降水中δ18O的降低;反之,在夏季风异常弱的年份,降水量小,降水时的大气温度较低,因此,降水中的δ18O较高. | 章新平 刘晶淼 孙维贞 黄一民 张剑明 | 2006 | 中国科学(D辑)2006，36，9： | 50 |
| 2 | 黑河流域大气降水稳定同位素变化及模拟显示文摘利用2002~2004年黑河流域6个采样点上的301个降水数据,对黑河流域大气降水中δD和δ18O的变化进行了分析.结果表明,流域降水δ18O和δD的变化范围分别为6.5‰~-33.4‰和59‰~-254‰,这主要是由于降水水汽来源不同和气象条件特别是气温和降水量的较大变化使得降水形成的凝结机制发生变化引起;降水中同位素的变化和气温之间呈现出非常明显的正相关关系,即温度效应明显;在月时间尺度上,降水量效应是不存在的,但在降水事件尺度上,存在降水量效应;δ18O加权平均值随着采样点海拔高度增加而降低,呈现出较好的高度效应,效应梯度为-0.47‰/100 m;区域大气降水线(RMWL)为δD=7.82δ18O+7.63,其斜率和截距与中国北方地区接近;后向轨迹法追踪黑河流域水汽来源结果表明,冷季(10~次年3月)水汽主要来源于西风带而暖季(4~9月)的水汽来源复杂;模拟显示,δ18O随时间呈现明显的正弦趋势. | 吴锦奎 杨淇越 丁永建 叶柏生 张明泉 | 2011 | 环境科学2011，32，7： | 40 |
| 3 | 中国西南地区降水氢氧同位素研究进展与展望显示文摘中国西南地区属典型的季风气候,降水的水汽来源及其影响因素非常复杂.通过检索西南地区有关降水氢氧同位素的文献,对西南三省一市降水氢氧同位素研究进行了综述.从已开展研究的区域和站点、主要采用的样品采集与分析方法、主要的研究内容(同位素组成、大气降水线、氘盈余)和水汽来源、影响因素以及区内的空间差异等几方面进行总结,并对今后西南地区降水氢氧同位素的研究进行展望,为研究区域降水氢氧同位素的进一步研究提供科学指导. | 张贵玲 角媛梅 何礼平 刘歆 刘澄静 闫晓景 王梅 | 2015 | 冰川冻土2015，37，4： | 27 |
| 4 | Relations between oxygen stable isotopic ratios in precipitation and relevant meteorological factors in southwest China显示文摘The correlations of isotopic ratios in precipitation with temperature, air pressure and humidity at dif- ferent altitudes, in southwest China, are analyzed. There appear marked negative correlations for the δ 18O in precipitation with precipitation amount, vapor pressure and atmospheric precipitable water (PW) at Mengzi, Simao and Tengchong stations on synoptic timescale; the marked negative correlations between the δ 18O in precipitation and the diurnal mean temperature at 400 hPa, 500 hPa, 700 hPa and 850 hPa are different from the temperature effect in middle-high-latitude inland. Moreover, the notable positive correlation between the δ 18O in precipitation and the dew-point deficit △Td at different altitudes is found at the three stations. On annual timescale, the annual precipitation amount weighted mean δ 18O display the negative correlations not only with annual precipitation but also with annual mean temperature at 500 hPa. It can be deduced that, in the years with abnormally strong summer monsoon, more warm and wet air from low-latitude oceans is transported northward along the vapor channel located in southwest China and generates abnormally strong rainfall on the way. Meanwhile, the ab- normally strong condensation process will release more condensed latent heat into atmosphere, and lead to the rise of atmospheric temperature during rainfall, but decline of the δ 18O in precipitation. On the contrary, in the years with abnormally weak summer monsoon, the abnormally weak condensation process will release less condensed latent heat into atmosphere, and lead to the decline of atmos- pheric temperature during rainfall, but increase of the δ 18O in precipitation. | ZHANG XinPing LIU JingMiao SUN WeiZheng HUANG YiMin ZHANG JianMing | 2007 | Science China Earth Sciences2007，50，4： | 17 |
| 5 | 张掖大气降水的δ^(18)O特征及水汽来源显示文摘利用全球同位素监测网(GNIP)张掖站的大气降水环境同位素数据,分析了张掖大气降水中δ18O的变化规律,通过分析其与气温和降水之间的关系,发现δ18O月加权平均值表现出很好的温度效应,且其与降水成正相关关系,这与张掖干旱半干旱气候有关。对张掖大气降水线的研究发现,当地大气降水线(LMWL)比全球降水线(GMWL)及中国降水线的斜率和截距都低。冬秋季降水线的斜率低于春夏季,原因是局地蒸发的水汽在春夏季占有较大的比重,并且受海洋性水汽影响较大。利用降水同位素资料结合后向轨迹法(Backwards Trajectory)对张掖水汽来源进行推断,结果表明,张掖全年以西风带大陆性水汽为主,春夏季还会受到海洋性水汽的影响,同时由于较高的温度,春夏季受局地蒸发性水汽的影响相当明显。 | 吴军年 王红 | 2011 | 安徽农业科学2011，39，3： | 11 |
| 6 | Seasonal variations of stable isotope in precipitation and moisture transport at Yushu,eastern Tibetan Plateau显示文摘Precipitation δ 18O at Yushu, eastern Tibetan Plateau, shows strong fluctuation and lack of clear seasonality. The seasonal pattern of precipitation stable isotope at Yushu is apparently different from either that of the southwest monsoon region to the south or that of the inland region to the north. This different seasonal pattern probably reflects the shift of different moisture sources. In this paper, we present the spatial comparison of the seasonal patterns of precipitation δ 18O, and calculate the moisture transport flux by using the NCAR/NCEP reanalysis data. This allows us to discuss the relation between moisture transport flux and precipitation δ 18O. This study shows that both the southwest monsoon from south and inland air mass transport from north affected the seasonal precipitation δ 18O at Yushu, eastern Tibetan Plateau. Southwest monsoon brings the main part of the moisture, but southwest transport flux is weaker than in the southern part of the Tibetan Plateau. However, contribution of the inland moisture from north or local evaporation moisture is enhanced. The combined effect is the strong fluctuation of summer precipitation δ 18O at Yushu and comparatively poor seasonality. | TIAN LiDe MA LingLong YU WuSheng LIU ZhongFang YIN ChangLiang ZHAO ZhongPing TANG Wei WANG Yu | 2008 | Science China Earth Sciences2008，51，8： | 9 |
| 7 | 青藏高原东坡降水的同位素高程梯度显示文摘青藏高原(TP)受不同来源的水汽影响,降水同位素高程梯度在不同坡向可能存在差异.本研究系统地监测和模拟了青藏高原东坡降水中稳定同位素的高程效应,共采集了265件水样进行稳定同位素(δ~2H和δO)测试,其中70件是逐次降水样品,195个是用于比较的地表水样品.山巅湖泊水样经过蒸发校正后用来代表当地降水的平均同位素组成.结果表明,青藏高原东部边缘区的高程梯度为-4.2‰km^(-1)(R^(2)=0.93),瑞利分馏模型进一步证实了该高程梯度.与青藏高原不同坡向及腹地相比,这是迄今为止得到的高程梯度最大值.青藏高原腹地降水同位素高程梯度较小,可能是高原腹地的水汽再循环所致.本文结果还表明采用河水样本构建高程梯度具有显著的局限性. | 李捷 庞忠和 | 2022 | 中国科学:地球科学2022，52，11： | 2 |
| 8 | The elevation gradient of stable isotopes in precipitation in the eastern margin of Tibetan Plateau显示文摘Tibetan Plateau(TP)receives moistures from different directions,so variations of isotope elevation gradient on different sides may exist.In this study,we systematically monitored and modeled the elevation effect of stable isotopes in precipitation of the eastern margin of the Tibetan Plateau,where we collected 265 water samples for stable isotope(δ2H andδ^(18)O)analyses,of which 70 are eventful rainfall samples,and 195 are surface water samples,for comparison.Alpine lakes on the mountain peaks were used to reconstruct the average isotope composition of the local precipitation based on the evaporation effect.An elevation gradient of−4.2‰km^(−1)(R^(2)=0.93)was established for the eastern marginal region of TP.This elevation gradient was further confirmed by fractionation assessment using the Rayleigh fractionation model.This is the highest ever reported for the TP and it is the highest as compared to those of all the other slopes as well as that of the interior part of the TP.Precipitation isotopes in the interior of TP show a lower elevation gradient,which is likely caused by significant local moisture recycling.This paper also discusses the limitations of using river water samples to construct the elevation gradient. | Jie LI Zhonghe PANG | 2022 | Science China Earth Sciences2022，65，10： | 0 |
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