Northern Hemisphere Controls on Tropical Southeast African Climate During the Past 60,000 Years

@article{Tierney2008NorthernHC,
  title={Northern Hemisphere Controls on Tropical Southeast African Climate During the Past 60,000 Years},
  author={Jessica E. Tierney and James M. Russell and Yongsong Huang and Jaap S. Sinninghe Damst{\'e} and Ellen C. Hopmans and Andrew S. Cohen},
  journal={Science},
  year={2008},
  volume={322},
  pages={252 - 255}
}
The processes that control climate in the tropics are poorly understood. We applied compound-specific hydrogen isotopes (δD) and the TEX86 (tetraether index of 86 carbon atoms) temperature proxy to sediment cores from Lake Tanganyika to independently reconstruct precipitation and temperature variations during the past 60,000 years. Tanganyika temperatures follow Northern Hemisphere insolation and indicate that warming in tropical southeast Africa during the last glacial termination began to… 
View on AAAS
geo.arizona.edu
504 Citations
Highly Influential Citations
39
Background Citations
155
Methods Citations
23
Results Citations
18

504 Citations

Forcing of wet phases in southeast Africa over the past 17,000 years
TLDR
It is shown that remote atmospheric forcing by cold events in the northern high latitudes appears to have been the main driver of hydro-climatology in southeast Africa during rapid climate changes over the past 17,000 years.
Eastern South African hydroclimate over the past 270,000 years
TLDR
Numerical modelling results reveal that higher precipitation in the KwaZulu-Natal province during precession maxima is driven by a combination of increased local evaporation and elevated moisture transport into eastern South Africa from the coast of Mozambique.
Coordinated hydrological regimes in the Indo-Pacific region during the past two millennia
Instrumental data suggest that major shifts in tropical Pacific atmospheric dynamics and hydrology have occurred within the past century, potentially in response to anthropogenic warming. To better…
Masked millennial-scale climate variations in South West Africa during the last glaciation
To address the connection between tropical African vegetation development and high-latitude climate change we present a high-resolution pollen record from ODP Site 1078 (off Angola) covering the…
Model, proxy and isotopic perspectives on the East African Humid Period
Coherent changes of southeastern equatorial and northern African rainfall during the last deglaciation
TLDR
A climate model uses a transient simulation with a climate model to show that a reduction in the Atlantic Meridional Overturning Circulation at the beginning of the last deglaciation caused a Reduction in precipitation in northern and southeastern equatorial Africa.
Half-precessional dynamics of monsoon rainfall near the East African Equator
TLDR
It is revealed that monsoon rainfall in this region varied at half-precessional (∼11,500-year) intervals in phase with orbitally controlled insolation forcing, which can be attributed to the low-latitude position of its continental regions of surface air flow convergence, and its relative isolation from the Atlantic Ocean.
A TEX86 lake record suggests simultaneous shifts in temperature in Central Europe and Greenland during the last deglaciation
High‐resolution quantitative temperature records from continents covering glacial to interglacial transitions are scarce but important for understanding the climate system. We present the first…
PALEOCLIMATE | The Younger Dryas Climate Event
Glacial fluctuations in tropical Africa during the last glacial termination and implications for tropical climate following the Last Glacial Maximum
...
...

References

SHOWING 1-10 OF 51 REFERENCES
Climatic controls on central African hydrology during the past 20,000 years
TLDR
It is concluded that changes in ocean circulation, and hence sea surface temperature patterns, were important in modulating atmospheric moisture transport onto the central African continent.
Abrupt change in tropical African climate linked to the bipolar seesaw over the past 55,000 years
The tropics play a major role in global climate dynamics, and are vulnerable to future climate change. We present a record of East African climate since 55 ka, preserved in Lake Malawi sediments,…
Large temperature variability in the southern African tropics since the Last Glacial Maximum
The role of the tropics in global climate change is actively debated, particularly in regard to the timing and magnitude of thermal and hydrological response. Continuous, high‐resolution temperature…
Hydrological changes in the African tropics since the Last Glacial Maximum
  • F. Gasse
  • Environmental Science, Geography
  • 2000
Synchroneity of Tropical and High-Latitude Atlantic Temperatures over the Last Glacial Termination
TLDR
A rapid southward shift in the atmospheric intertropical convergence zone could account for the synchroneity of tropical temperature, atmospheric methane, and high-latitude changes during the Younger Dryas.
Abrupt climate change in southeast tropical Africa influenced by Indian monsoon variability and ITCZ migration
The timing and magnitude of abrupt climate change in tropical Africa during the last glacial termination remains poorly understood. High‐resolution paleolimnological data from Lake Tanganyika,…
Southward Migration of the Intertropical Convergence Zone Through the Holocene
TLDR
The Cariaco Basin record exhibits strong correlations with climate records from distant regions, including the high-latitude Northern Hemisphere, providing evidence for global teleconnections among regional climates.
Millennial‐scale precipitation changes in southern Brazil over the past 90,000 years
A U‐Th dated 90,000 year‐long speleothem oxygen isotope record from southern Brazil anti‐correlates remarkably with the cave calcite records from eastern China, but positively correlates with the…
Northern Hemisphere forcing of climatic cycles in Antarctica over the past 360,000 years
TLDR
The results indicate that orbital-scale Antarctic climate change lags Northern Hemisphere insolation by a few millennia, and that the increases in Antarctic temperature and atmospheric carbon dioxide concentration during the last four terminations occurred within the rising phase of Northern Hemisphere summer insolation.
A comparison of simulated monsoon circulations and snow accumulation in Asia during the mid-Holocene and at the Last Glacial Maximum
  • A. Bush
  • Environmental Science, Geography
  • 2002
...
...