[1]ZHANG Xiaodong,GUO Zhengsheng.Mechanism of the Response of Stable Isotopes of Precipitation to ENSO Events in Fuzhou[J].Research of Soil and Water Conservation,2020,27(01):221-226.
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Mechanism of the Response of Stable Isotopes of Precipitation to ENSO Events in Fuzhou
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 01
Page number:
221-226
Column:
Public date:
2020-02-20
- Title:
- Mechanism of the Response of Stable Isotopes of Precipitation to ENSO Events in Fuzhou
- Keywords:
- stable isotopes; ENSO; OLR field; ITCZ; Fuzhou
- CLC:
- P342
- DOI:
- -
- Abstract:
- The variation of moisture sources under the background of ENSO has a great influence on the hydrological cycle process in monsoon area. Based on the precipitation isotope and meteorological data of Fuzhou, the temporal and spatial distribution characteristics of δ18 O were studied under the background of ENSO, and the mechanism of response of hydrogen and oxygen isotopic characteristics of precipitation to ENSO events was further explored by OLR technology. The results show that the variation of moisture source prominently affects the annual distribution of precipitation, especially the temporal distribution of precipitation in rainy season, which affects the interannual change of δ18 O; the Meteoric Water Line of each ENSO event changes regularly, and the La Nina year highlights the stronger oceanic characteristics; the El Nino year weakens the precipitation effect in rainy season. Meanwhile, the anti-temperature effect in dry season is strengthened, while that in La Nina year is weakened; the variation of moisture sources inverted by OLR field strongly corresponds to the stable isotope characteristics in Fuzhou, and the changes of location and convective intensity of moisture sources in the western Pacific Ocean are the main factors causing the stable isotope variation of precipitation in Fuzhou during ENSO event year.
- References:
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Last Update:
2020-02-25