Research Faculty, Civil Environmental and Architectural Engineering (CEAE) and CIRES • Faculty Affiliate, Center for Asian Studies (CAS) • Lecturer: Undergraduate program
Environmental Studies & Institute of Arctic and Alpine Research (INSTAAR)


Ph.D. Earth and Planetary Sciences, Harvard University
M.Sc. Applied Geosciences, Indian Institute of Technology
B.Sc. Geology, Presidency College


Climate-society linkages (conflict, migration, agriculture and community rearrangement), climate reconstructions and historical climate impacts in the tropics and sub-tropics, particularly in south Asia.


South Asia/India 
Climate studies 
Environmental Studies


R. Ray., *A, Bhattacharya., Arora, G., Bajaj, K., Horton, K., Chen, Shi and Bazaz, A. “Quantifying rain failure in Quantifying ‘rain failure’ in semi-arid societies: lessons from a 21 

Bhattacharya, A., Ray, R., Arora, G., Chakraborty, S and Bajaj, K. “A longue duree approach in assessing climate risks: A 200-year record from semi-arid regions of peninsular India. Colorado WASH Virtual symposium (2021). Accepted. 

Bajaj, K., Bazaz, A., S. Chakraborty and Bhattacharya, A. “Regional paleoclimate and environmental database: Where paleodata socioeconomic-political decision making.” International Virtual conference on ‘Earth’s changing climate: Past, present and future (2020). Submitted. 

Bajaj, K., Bhattacharya, A., Chakraborty, S., Bazaz, A., B. Rajagopalan and E. Vance. “A database of paleo climate and environment: A regional initiative for science and society.” American Geophysical Union (AGU), Fall meeting (2020). Accepted. 

Ray, R., Bhattacharya, A., Bazaz, A., Arora, G. and Mitra, W. “Climate Adaptation: What worked and what did not. A 200-year record of the 18th and 19th century British administrative documents pertaining to semi-arid regions of peninsular India.” American Geophysical Union (AGU), Fall meeting (2020). Paper no. GC035-06. 

Ray, R., Bhattacharya, A., and Bazaz, A. “The importance of 18th-19th century British Institutional Archival documents in climatic studies.” International Conference on Paleoclimate Changes (IPCP), Virtual Platform (2020). 

Bhattacharya, A., Ray, R., Arora, G., and Mitra, W. “Towards a new framework to characterize a new framework for understanding long term community resilience to climate variability: A pilot study focusing on 19th-20th century historical evolution of communities in semi-arid regions of western India.” Past Global Changes (PAGES) Past Socio-environmental Systems Meeting, Chile (2020). In-review. 

Ray, R. and Bhattacharya, A. “Assessing the impacts of climate variability-a study of institutional archival data spanning 1700-1947 (British Colonial Period) pertaining to semi-arid tracts of peninsular India.” European Geophysical Union (EGU) General Assembly, Vienna, paper no. 2020-5350. (2020)  

Bhattacharya, A., Bennett, A., Marchitto, T. and Leithold, E. “Coarse-grained mineral dust deposition records in alpine lakes suggest more frequent tornadoes during warmer intervals of the late Holocene period in arid and semi-arid tracts of North America.” European Geophysical Union (EGU) General Assembly, Vienna, paper no. 2020-190. (2020)  

8-year record of climate impacts in colonial-era peninsular India.” Under reviewCommunications Earth and Environment, Nature. 

Semazzi, F., Liu, B., Xie, L., Smith, K., Angus, M., Gudoshava, M., Argent, R., Sun, X., Liess, S., and Bhattacharya, A. “Decadal variability of Eastern African Monsoon.” CLIVAR Exchanges Special Issue on Monsoons: Advancing understanding of monsoon variability and improving predictions.” Guest-editors: Paul Dirmeyer and Andy Turner. (2015) 

Mahowald, N. M., Kloster, S., Engelstaedter, S., Moore, J. K., Mukhopadhyay, S. McConnell, J. R., Albani, S., Doney, S. C., Bhattacharya, A., Curran, M. A. J., Flanner, M. G., Hoffman, F. M., Lawrence, D. M., Lindsay, K., Mayewski, P. A., Neff, L., Rothenberg, D., Thomas, E., Thornton, P. E., Zender, C. S. “Observed 20th century desert dust variability: impact on climate and biogeochemistry.” Atmospheric chemistry and Physics, Vol. 10, 22, 10875-10893. (2010) 

Bhattacharya, A. and Mukhopadhyay, S. “A high resolution record of 18th-20th century dust emission rates from the Sahara-Sahel region of Africa.” Geochimica et Cosmochimica Acta, Vol. 73, 13, A118-A118. (2010) 

Mukhopadhyay, S. and Bhattacharya, A. “Dust Emission from the Sahara-Sahel region over the past 150 years.” Geochimica et Cosmochimica Acta, Vol. 72, 12, A661-A661. (2009)