Award Abstract # 0502535
High Resolution Absolute-dated Histories of Northern and Southern Low Latitude Precipitation: Links between Low and High Latitude Climate over Glacial-Interglacial Cycles

NSF Org: AGS
Division of Atmospheric and Geospace Sciences
Recipient: REGENTS OF THE UNIVERSITY OF MINNESOTA
Initial Amendment Date: May 2, 2005
Latest Amendment Date: May 2, 2005
Award Number: 0502535
Award Instrument: Standard Grant
Program Manager: David Verardo
AGS
 Division of Atmospheric and Geospace Sciences
GEO
 Directorate for Geosciences
Start Date: August 1, 2005
End Date: July 31, 2011 (Estimated)
Total Intended Award Amount: $0.00
Total Awarded Amount to Date: $688,420.00
Funds Obligated to Date: FY 2005 = $688,420.00
History of Investigator:
  • R Lawrence Edwards (Principal Investigator)
    edwar001@umn.edu
  • Hai Cheng (Co-Principal Investigator)
Recipient Sponsored Research Office: University of Minnesota-Twin Cities
2221 UNIVERSITY AVE SE STE 100
MINNEAPOLIS
MN  US  55414-3074
(612)624-5599
Sponsor Congressional District: 05
Primary Place of Performance: University of Minnesota-Twin Cities
2221 UNIVERSITY AVE SE STE 100
MINNEAPOLIS
MN  US  55414-3074
Primary Place of Performance
Congressional District:
05
Unique Entity Identifier (UEI): KABJZBBJ4B54
Parent UEI:
NSF Program(s): GLOBAL CHANGE
Primary Program Source: app-0105 
Program Reference Code(s): 1304, 1530, 4444, EGCH
Program Element Code(s): 157700
Award Agency Code: 4900
Fund Agency Code: 4900
Assistance Listing Number(s): 47.050

ABSTRACT

This project uses funds to obtain high-resolution, absolute-dated records of the oxygen isotopic composition of speleothem calcite from Northern Hemisphere (eastern China) and Southern Hemisphere (eastern Brazil) low latitude sites. Due to the combination of length and resolution, such records may be able to address the kinds of questions that have been addressed by long, high-resolution ice core records, such as the Greenland and Antarctic sequences. In general, the research will provide new data to better understanding of connections between high and low latitude climate and Southern and Northern Hemisphere climate, thereby placing constraints on climate change mechanisms (e.g. oceanic and atmospheric circulation change, high northern latitude versus tropical triggers, northern versus southern triggers, orbital forcing, and solar forcing).

Some specific science issues being addressed with the research are: (1) How do the Greenland observations relate, temporally and spatially, to climate elsewhere on Earth? (2) Looking further back in time beyond the limit of the Greenland records to earlier glacial periods, deglacial intervals and interglacial periods, to what extent was climate in these earlier periods similar to or different from their most recent analogues? (3) How does the history of the oxygen isotopic composition of meteoric precipitation at these high-latitude sites relate to the corresponding history of oxygen isotopic composition of precipitation at low-latitudes?

The investigators have built up collaborative partnerships with Chinese and Brazilian science colleagues who will help collect, analyze, and interpret samples from a large suite of speleothem samples from varying cave sites. The funds used for this research leverage federal, international, and private sources of support.

PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH

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(Showing: 1 - 10 of 40)
Auler, A.S., Pilo, L.B., Smart, P.L., Wang, X.-F., Hoffmann, D., Richards, D.A., Edwards, R.L., Neves, W.A., and Cheng, H. "U-series dating and taphonomy of Quaternary vertebrates from Brazilian Caves." Palaeogeography, Palaeoclimatology, Palaeoecology , v.240 , 2006 , p.508
Auler, A.S., Smart, P.L., Wang, X., Piló, L.B., Edwards, R.L., and Cheng, H. "Cyclic sedimentation in Brazilian caves: Mechanisms and paleoenvironmental significance" Geomorphology , v.106 , 2009 , p.142 10.1016/j.geomorph.2008.09.020
Badertscher, S., Fleitmann, D., Cheng, H., Edwards, R.L., Göktürk, O.M., Zumbühl, A., Leuenberger, M. and Tüysüz, O "Pleistocene water intrusions from the Mediterranean and Caspian Seas into the Black Sea" Nature Geoscience , v.4 , 2011 , p.236 10.1038/NGEO1106
Berkelhammer, M., Sinha, A., Stott, L.D., Mudelsee, M., Cheng, H., Edwards, R.L., and Cannariato, K. "Persistent multidecadal power of the Indian Summer Monsoon" Earth Planet. Sci. Lett. , v.290 , 2010 , p.166 10.1016/j.epsl.2009.12.017
Broecker, W.S., Denton, G.H., Edwards, R.L., Cheng, H., Alley, R.B., Putnam, A.E "Putting the Younger Dryas Event into Context" Quaternary Science Reviews , v.29 , 2010 , p.1078 10.1016/j.quascirev.2010.02.019
Cai, B., Edwards, R.L., Cheng, H., Tan, M., Wang, X.F. and Liu, T "A dry episode during the Younger Dryas and centennial-scale weak monsoon events during the early Holocene: A high-resolution stalagmite record from southeast of the Loess Plateau, China" Geophysical Research Letters , v.35 , 2008 , p.L02705 10.1029/2007GL030986
Cai, Y.J., An, Z.S., Cheng, H., Edwards, R.L., Kelly, M.J., Liu, W.G., Wang, X.F., and Chen, C.C. "A high resolution absolute dated Indian Monsoon record between 53 and 36 ka from Xiaobailong Cave, southwestern China" Geology , v.34 , 2006 , p.621
Cai, Y.J., Cheng, H., An, Z.S., Edwards, R.L., Wang, X.F., Tan, L.C., and Wang, J. "Large variations of oxygen isotopes in precipitation over south-central Tibet during Marine Isotope Stage 5" Geology , v.38 , 2010 , p.243 10.1130/G30306.1
Cai, Y., Tan, L., Cheng, H., An, Z., Edwards, R.L., Kelly, M.J., Kong, X., Wang, X. "The variation of summer monsoon precipitation in central China since the last deglaciation" Earth and Planetary Science Letters , v.291 , 2010 , p.21
Cheng, H., Edwards, R.L., and Haug, G.H. "Comment on "On linking climate to Chinese dynastic change: Spatial and temporal variations of monsoonal rain"" Chinese Science Bulletin , v.55 , 2010 , p.3734 10.1007/s11434-010-4122-3
Cheng, H., Edwards, R.L., Broecker, W.S., Denton, G.H., Kong, X.G., Wang, Y.J., Zhang, R., Wang, X.F., Hardt, B., and Jiang, X.Y. "Ice Age Terminations" Science , v.326 , 2009 , p.248 10.1126/science.1177840
(Showing: 1 - 10 of 40)

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