| PALEOLIMNOLOGY |
Wet phases in tropical southern Africa during the last glacial period
|
|
Garcin, Y.,Vincens, A.,Williamson, D.,Guiot, J.,Buchet, G. 2006 Wet phases in tropical southern Africa during the last glacial
period Geophys. Res. Lett. Vol. 33, L07703
| Data Coverage |
North: -9.3333 * South: -9.3333 |
|
West: 33.755 * East: 33.755 |
|
Altitude: 840 m |
Start Year: 45258 cal yr BP * End Year: -51 cal yr BP
Data: Please Cite Data Contributors!
|
|
Summary: A 45,000-year high-resolution sedimentary record from Lake Masoko
in Tanzania shows the climate in this part of East Africa to have
been characterized by a short and less severe dry season during
the Last Glacial Maximum. Moisture and lake-level proxies,
pollen assemblages and magnetic susceptibility, indicate that
rainfall in the Masoko area was strongly controlled by low-latitude
insolation (i.e., precessional forcing). Such observations contrast
with the climatic patterns previously reconstructed in East Africa
for the last glacial. Indeed, widespread dry conditions are
generally observed and are attributed to the predominant control
of high latitude glacial forcing over insolation forcing on the
tropical hydrology. However, during the Younger Dryas cold event,
out of phase with regional insolation behaviour, wetter conditions
prevailed in this area, suggesting that the rainfall belt over
Africa was probably shifted to the South, bringing moisture to
the southernmost tropics.
More Info on Paleolimnology |
|
|
Complete XML Record: noaa-lake-6072
(Last Revised: 2009-02-11 )
|
|
 |
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
|
|
