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Continental water recycling and H 2 18 O concentrations
Author(s) -
Koster Randal D.,
de Valpine D. Perry,
Jouzel Jean
Publication year - 1993
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/93gl01781
Subject(s) - northern hemisphere , southern hemisphere , precipitation , environmental science , isotope , tracer , water content , moisture , stable isotope ratio , atmospheric sciences , climatology , geology , meteorology , physics , nuclear physics , geotechnical engineering
Using a GCM fitted with tracer diagnostics, we examine how continental moisture recycling affects the stable water isotope content of precipitation, focusing on its contribution to the “noise” in the well‐established relationship between temperature and δ 18 O. On a global basis, for temperatures between −30° and 15°C, continental recycling explains more than a third of the variability in annual δ 18 O that is not explained by temperature. Recycling appears almost as important as temperature in defining δ 18 O distributions during northern hemisphere summer.