My research focuses on understanding the sensitivity of regional rainfall to global climate change. I use a variety of methods, ranging from geochemical and biological proxies to climate models. My work focuses on a paleoclimatic perspective, whereby past instances of climate change can be used as ‘natural experiments’ to understand the response of the atmosphere-ocean system to external forcing. Current projects include analyzing the role of tropical Atlantic variability in forcing Mesoamerican drought, studying the interactions of the midlatitude westerlies and monsoon systems, and analyzing reorganizations of subtropical rainfall during past warm intervals in Earth history.
(Aug. 10, 2020)
A&S researchers lay the groundwork to reconstruct global climate through Earth's history.
(Sept. 5, 2018)
Professor Tripti Bhattacharya draws link between ancient monsoon activity, large-scale climate change
Judd, E.J., Bhattacharya, T., Ivany, L.C. (2020) A dynamical framework for interpreting ancient sea surface temperatures. Geophysical Research Letters, v. 47, e2020GL089044, http://dx.doi.org/10.1029/2020GL089044.
Tierney, J.E., Haywood, A.M. Feng, R. Bhattacharya, T., Otto-Bleisner, B. 2019. Pliocene warmth consistent with greenhouse gas forcing. Geophysical Research Letters. https://doi.org/10.1029/2019GL083802
DiNezio, P., Tierney, J.E. Otto-Bleisner, B.L., Timmerman, A., Bhattacharya, T., Rosenbloom, N., Brady, E. 2018. Glacial changes in warm pool climate amplified by Indian Ocean. Science Advances 4:12 DOI: 10.1126/sciadv.aat9658
Bhattacharya, T., Tierney, J.E., Addison, J.A., Murray, J.W. 2018. Ice sheet modulation of deglacial North American Monsoon intensification. Nature Geoscience. DOI: 10.1038/s41561-018-0220-7
Bhattacharya, T., Chiang, J.C.H., Cheng, W. 2017. Ocean-atmosphere dynamics linked to 800-1050 CE dry interval in Mesoamerica. Quaternary Science Reviews. DOI: 10.1016/j.quascirev.2017.06.005
Bhattacharya, T., Tierney, J.E., DiNezio, P. 2017. Glacial reduction of the North American Monsoon via surface cooling and atmospheric ventilation. Geophysical Research Letters
Bhattacharya, T., Byrne, R. 2016. Late Holocene anthropogenic and climatic influences on fire and regional vegetation in Mexico’s Cuenca Oriental. Global and Planetary Change 138: 56 – 69. DOI: 10.1016/j.gloplacha.2015.12.005
Bhattacharya, T., Byrne, R., Boehnel, H., Wogau, K., Kienel, U., Ingram, B.L. Zimmerman, S. 2015. Cultural implications of late Holocene climate change in the Cuenca Oriental, Mexico. Proceedings of the National Academy of Sciences 112(6): 1693-1698. doi: 10.1073/pnas.1405653112
Bhattacharya, T., Chiang, J.C.H. 2014. Spatial variability and mechanisms underlying El Nino-induced drought in Mexico. Climate Dynamics https://doi.org/10.1007/s00382-014-2106-8
Bhattacharya, T., Beach T., Wahl, D. 2011. An analysis of modern pollen rain from the Maya Lowlands of northern Belize. Review of Paleobotany and Palynology 164: 109-120. DOI: 10.1016/j.revpalbo.2010.11.010