Investigating the Direct Meltwater Effect in Terrestrial Oxygen‐Isotope Paleoclimate Records Using an Isotope‐Enabled Earth System Model

Zhu, Jiang; Liu, Zhengyu; Brady, Esther C.; Otto‐Bliesner, Bette L.; Marcott, Shaun A.; Zhang, Jiaxu; Wang, Xianfeng; Nusbaumer, Jesse; Wong, Tony E.; Jahn, Alexandra; Noone, David

doi:10.1002/2017gl076253

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Investigating the Direct Meltwater Effect in Terrestrial Oxygen‐Isotope Paleoclimate Records Using an Isotope‐Enabled Earth System Model

2017
By Zhu, Jiang ; Liu, Zhengyu ; Brady, Esther C. ; ...
Source: Geophysical Research Letters, 44(24)

[PDF-984.30 KB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Zhu, Jiang ; Liu, Zhengyu ; Brady, Esther C. ; Otto‐Bliesner, Bette L. ; Marcott, Shaun A. ; ... More +

Zhu, Jiang ; Liu, Zhengyu ; Brady, Esther C. ; Otto‐Bliesner, Bette L. ; Marcott, Shaun A. ; Zhang, Jiaxu ; Wang, Xianfeng ; Nusbaumer, Jesse ; Wong, Tony E. ; Jahn, Alexandra ; Noone, David Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information)

NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information) Less -
Description:

Variations in terrestrial oxygen-isotope reconstructions from ice cores and speleothems have been primarily attributed to climatic changes of surface air temperature, precipitation amount, or atmospheric circulation. Here we demonstrate with the fully coupled isotope-enabled Community EarthSystem Model an additional process contributing to the oxygen-isotope variations during glacial meltwater events. This process, termed “the direct meltwater effect, ”involves propagating large amounts of isotopically depleted meltwater throughout the hydrological cycle and is independent of climatic changes. We ﬁnd that the direct meltwater effect can make up 15 –35% of the δ 18O signals in precipitation over Greenland and
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General Earth And Planetary Sciences Geophysics
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Geophysical Research Letters, 44(24)
DOI:

https://doi.org/10.1002/2017gl076253
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0094-8276;1944-8007;
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American Geophysical Union (AGU)
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Journal Article
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urn:sha256:934a362f913fed046f9c5f6d0aa4d3550c1d4164c91621a191e3037acad91f27
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https://repository.library.noaa.gov/view/noaa/55241/noaa_55241_DS1.pdf
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