ORCID Profile
0000-0003-4948-2859
Current Organisations
University of Western Ontario
,
Nanyang Technological University
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Publisher: Springer Science and Business Media LLC
Date: 08-10-2019
Publisher: Copernicus GmbH
Date: 02-01-2020
Abstract: Abstract. Tropical cyclones have devastating impacts on the environment, economies, and societies, and may intensify in the coming decades due to climate change. Stable water isotopes serve as tracers of the hydrological cycle, as the fractionation process may leave distinct precipitation isotopic signatures. Here we present a record of daily precipitation isotope measurements from March 2014 to October 2015 for Metropolitan Manila, which is a first of a kind dataset for the Philippines and Southeast Asia, and analyze if there is an isotopic response to tropical cyclones. The most negative shift in δ18O value (−13.84 ‰) leading to a clear isotopic signal was caused by Typhoon Rammasun, which directly hit Metropolitan Manila. The average δ18O value of precipitation associated with tropical cyclones is −10.24 ‰, whereas the mean isotopic value for rainfall associated with non-cyclone events is −5.29 ‰. Further, the closer the storm track to the s ling site, the more negative the isotopic values, indicating that in-situ isotope measurements can provide a direct linkage between isotopes and typhoon activities in the Philippines.
Publisher: Copernicus GmbH
Date: 28-01-2022
DOI: 10.5194/NHESS-22-213-2022
Abstract: Abstract. Tropical cyclones have devastating impacts on the environment, economies, and societies and may intensify in the coming decades due to climate change. Stable water isotopes serve as tracers of the hydrological cycle, as isotope fractionation processes leave distinct precipitation isotopic signatures. Here we present a record of daily precipitation isotope measurements from March 2014 to October 2015 for Metropolitan Manila, a first-of-a-kind dataset for the Philippines and Southeast Asia. We show that precipitation isotopic variation at our study site is closely related to tropical cyclones. The most negative shift in δ18O values (−13.84 ‰) leading to a clear isotopic signal was caused by Typhoon Rammasun, which directly hit Metropolitan Manila. The average δ18O value of precipitation associated with tropical cyclones is −10.24 ‰, whereas the mean isotopic value for rainfall associated with non-cyclone events is −5.29 ‰. Further, the closer the storm track is to the s ling site, the more negative the isotopic values are, indicating that in situ isotope measurements can provide a direct linkage between isotopes and typhoon activities in the Philippines.
Publisher: American Geophysical Union (AGU)
Date: 30-11-2021
DOI: 10.1029/2021GL095876
Abstract: The source area of the Yellow River (SAYR) contributes over one third of the basin discharge and bears disproportionate significance to water conservation in China. Hydroclimate changes in the SAYR, therefore, have potential far‐reaching socioeconomic consequences. However, the major drivers of the SAYR hydroclimate remain poorly understood, largely due to limited hydroclimatic records. Here, we analyzed the organic, carbonate contents and stable isotopes of 14 C‐dated sediments from Ngoring Lake to reconstruct regional hydroclimate spanning the last ∼2,000 years. The results suggest that the SAYR experienced a near‐millennium‐long drying trend since the Medieval Warm Period, regardless of temperature changes and meltwater inputs. This trend, coherent with hydroclimate records from north China, is likely forced by a reduction in tropical Pacific zonal sea surface temperature gradient. Furthermore, our records have significant implications for other parts of the Tibetan Plateau that will likely develop similar hydroclimate conditions to the SAYR in the future.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 14-02-2020
Abstract: Moisture transport pathway effect offsets glacial forcings, likely explaining a lack of G-IG variability in Chinese cave records.
Publisher: Copernicus GmbH
Date: 02-01-2020
Location: United States of America
No related grants have been discovered for Shaoneng He.