Cloud Feedbacks



Other MIPs



Google Calendar

Lab Calendar

Site Map


Privacy & Legal Notice

Thanks to Our Sponsors:

PCMDI > WCRP CMIP3 Model Output > Diagnostic Subprojects Printer Friendly Version
<< Back to WCRP CMIP3 Subprojects

  • Cai W., Sullivan A., and T. Cowan, 2008: Shoaling of the off-equatorial south Indian Ocean thermocline: Is it driven by anthropogenic forcing?. Geophys. Res. Lett., 35, doi:10.1029/2008GL034174.

Surface warming since 1950 in the off-equatorial south
Indian Ocean (IO) occurs without a consistent surface heat
flux trend, and is accompanied by a shoaling thermocline.
The associated dynamics have not been fully explored.
Using 20th century climate model experiments, we test if
the shoaling thermocline is attributable to a transmission
from the Pacific, where a similar shoaling occurs, and
whether it is climate change-induced. A 22-model average
produces no such signal. An average of a subset of models
that better simulate El Nin˜o-Southern Oscillation (ENSO)
and its transmission produces the right direction of the IO
thermocline trends. The shoaling in this subset average,
taken as anthropogenically induced, is far weaker than the
observed, suggesting a significant multidecadal variability
component in the observed changes. The Pacific
contribution increases with a stronger model ENSO
amplitude and broader meridional structure, highlighting
the importance of realistic ENSO simulations in modelling
long-term change in the IO.

Full Article: http://www.agu.org/pubs/crossref/2008/2008GL034174.shtml

Last Updated: 2008-08-21

<< Back to WCRP CMIP3 Subprojects
For questions or comments regarding this website, please contact the Webmaster.
Lawrence Livermore National Laboratory  |  Physical & Life Sciences Directorate