Publication Abstracts

Oppo et al. 2007

Oppo, D.W., G.A. Schmidt, and A.N. LeGrande, 2007: Seawater isotope constraints on tropical hydrology during the Holocene. Geophys. Res. Lett., 34, L13701, doi:10.1029/2007GL030017.

Paleoceanographic data from the low latitude Pacific Ocean provides evidence of changes in the freshwater budget and redistribution of freshwater within the basin during the Holocene. Reconstructed Holocene seawater δ18O changes compare favorably to differences predicted between climate simulations for the middle Holocene (MH) and for the pre-Industrial late Holocene (LH). The model simulations demonstrate that changes in the tropical hydrologic cycle affect the relationship between δ18Osw and surface salinity, and allow, for the first time, quantitative estimates of western Pacific salinity change during the Holocene. The simulations suggest that during the MH, the mean salinity of the Pacific was higher because less water vapor was transported from the Atlantic Ocean and more was transported to the Indian Ocean. The salinity of the western Pacific was enhanced further due both to the greater advection of salt to the region by ocean currents and to an increase in continental precipitation at the expense of maritime precipitation, the latter a consequence of the stronger Asian summer monsoon.

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BibTeX Citation

  author={Oppo, D. W. and Schmidt, G. A. and LeGrande, A. N.},
  title={Seawater isotope constraints on tropical hydrology during the Holocene},
  journal={Geophys. Res. Lett.},

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RIS Citation

ID  - op01000b
AU  - Oppo, D. W.
AU  - Schmidt, G. A.
AU  - LeGrande, A. N.
PY  - 2007
TI  - Seawater isotope constraints on tropical hydrology during the Holocene
JA  - Geophys. Res. Lett.
VL  - 34
SP  - L13701
DO  - 10.1029/2007GL030017
ER  -

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