Dr Anna Biagi Harper
Associate Research Fellow
My interests include reducing climate change uncertainty through a better understanding of the terrestrial sources and sinks of CO2. I use the earth system model, JULES, to better constrain environmental and physiological controls on photosynthesis, respiration, and transpiration. Each of these processes also have important implications and feedbacks to the climate system. I am particularly interested in the Amazon rainforest, an amazing ecosystem which provides invaluable services to humanity - not least of which is the capture and storage of CO2. Drought threatens this ecosystem. How the forest responds to droughts and the likelihood of future droughts will both play large roles in the future of the global carbon cycle and climate.
Recent Publications (please e-mail me if you would like a copy but do not have access to a journal)
AB Harper, IT Baker, AS Denning, DA Randall, D Dazlich, M Branson, Impact of evapotranspiration on dry season climate in the Amazon forest. Accepted to Journal of Climate. http://dx.doi.org/10.1175/JCLI-D-13-00074.1 Press release: http://www.exeter.ac.uk/news/featurednews/title_334187_en.html
IT Baker, AB Harper, HR Rocha, AS Denning, AC Araujo, LS Borma, HC Freitas, ML Goulden, AO Manzi, SD Miller, AD Nobre, N Restrepo-Coupe, SR Saleska, R Stockli, C Randow, SC Wofsy (2013), Surface ecophysiological behavior across vegetation and moisture gradients in tropical South America. Agricultural and Forest Meteorology. DOI: 10.1016/j.agrformet.2012.11.015
TL Powell, DR Galbraith, BO Christoffersen, AB Harper, HMA Imbuzeiro, L Rowland, S Almeida, PM Brando, ACL da Costa, MH Costa, NM Levine, Y Malhi, SR Saleska, E Sotta, M Williams, P Meir, PR Moorcroft (2013), Confronting model predictions of carbon fluxes with measurements of Amazon forests subjected to experimental drought. New Phytologist. DOI:10.1111/nph.12390
AB Harper, AS Denning, IT Baker, MD Branson, L Prihodko, DA Randall (2010), Role of deep soil moisture in modulating climate in the Amazon forest. Geophysical Research Letters. DOI:10.1029/2009gl042302
AB Harper, IT Baker, AS Denning, RA Fisher, D Markewitz, DR Galbraith, ACL da Costa, SS Almeida, P Meir, Sensitivity of Amazon tropical forest drought response: A data-model comparison. Journal of Geophysical Research - Biogeosciences (In Review).