| CORALS AND SCLEROSPONGES |
Tongue of the Ocean, Exuma Sound - Sclerosponge Sr/Ca and Oxygen Isotope Data
|
|
Rosenheim, B.E., P.K. Swart, S.R. Thorrold, A. Eisenhauer, and P. Willenz. 2005. Salinity change in the subtropical Atlantic:
Secular increase and teleconnections to the North Atlantic Oscillation. Geophysical Research Letters, Vol. 32, L02603, January
2005.
| Data Coverage |
North: 23.92 * South: 23.67 |
|
West: -76.83 * East: -75.75 |
|
Altitude: -146 m |
Start Year: 1890 AD
End Year: 1990 AD
Data: Please Cite Data Contributors!
|
|
Summary: Recent studies comparing shipboard data between the 1950's and the 1990's have shown significant, heterogeneous adjustments
of the temperature-salinity structure of the N. Atlantic Ocean. Here, we present proxy records of temperature and salinity
from aragonite sclerosponge skeletons, extending existing records of the Salinity Maximum Waters (SMW) of the N. Atlantic
back to 1890. These proxy records show secular temperature increases of 1.6–2.0C, higher than published global averages, and
salinity increases of 0.35–0.5 psu, smaller than short-term secular trends recently measured. Salinity reconstructions vary
more significantly on the decadal scale, showing changes that are related to low-frequency variations of the North Atlantic
Oscillation (NAO). On both secular and decadal time scales, the records indicate significant thermohaline changes in the SMW,
either via forcing at the surface or increasing depths of density surfaces in the Bahamas.
More Info on Corals and Sclerosponges |
|
|
Parameters: del18O; SrCa
|
|
Complete XML Record: noaa-coral-1920 (Last Revised: 2007-09-05 )
|
|
 |
DOC/NOAA/NESDIS/NCDC (National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce )
325 Broadway, E/CC23
Boulder, CO 80305
USA
|
| http://www.ncdc.noaa.gov/paleo/ |
| E-mail: bruce.a.bauer@noaa.gov |
| E-mail: paleo@noaa.gov |
Phone: 303-497-6280
Fax: 303-497-6513
|
|
