In:
Natural Hazards and Earth System Sciences, Copernicus GmbH, Vol. 22, No. 1 ( 2022-01-28), p. 213-226
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 sampling
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.
Type of Medium:
Online Resource
ISSN:
1684-9981
DOI:
10.5194/nhess-22-213-2022
DOI:
10.5194/nhess-22-213-2022-supplement
Language:
English
Publisher:
Copernicus GmbH
Publication Date:
2022
detail.hit.zdb_id:
2069216-X
detail.hit.zdb_id:
2064587-9
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