Student Projects

Maria Ivanova just won a NSF fellowship to study red spruce tree rings from Schoodic Peninsula, Maine. I will be supervising her Master's research along with colleagues from the University of Maine. Maria is just back from attending the 25th North American Dendroecological Fieldweek (NADEF) at Acadia National Park, and is working up her samples.

Gerry Rustic successfully defended his PhD dissertation in September 2015 on "El Nino-Southern Oscillation and tropical Pacific climate in the last millennium". He is currently post-doctoral research scientist at Lamont-Doherty Earth Observatory of Columbia University.

Sarah Clark completed her Master's thesis on foraminifera isotopes from the eastern equatorial Pacific. Her thesis title: "Thermocline structure and El Nino Southern Oscillation variability under Last Glacial Maximum climate".

Hassan Ali sampling conifers in Harriman State Park, New York. For his master's thesis Hassan developed tree-ring chronologies from white pines to investigate climatic and ecologic changes over the past 200 years.

Honors students cross-dating and measuring rings from oak cores collected on the campus of CSI.

Dan Spadaro deployed band dendrometers to study the growth patterns of trees in the western Catskill Mountains of New York. Pictured here next to a white oak, Dan actually spent most of his time studying eastern hemlocks.

Jim Oliveri analyzing tropical Atlantic hurricane data. For his master's thesis Jim carried out regression analysis of Atlantic hurricane activity indices (frequency, duration, maximum wind speed etc.) with climatic variables from 1942 to 2007, to establish the relative significance of sea surface temperature (SST) and atmospheric wind shear on tropical storm development. Results showed a strong dependence of overall tropical storm and major hurricane frequency on SST, with significant but secondary roles exerted by the Southern Oscillation and west African rainfall, through their association with wind shear. 30-year running correlations showed that these relationships have not been stationary but in fact changed markedly after the mid 1970s. In particular the correlation between hurricane frequency and ENSO strengthened after 1976, possibly associated with a large scale climate shift in the Pacific Ocean. Other factors may be acceleration of global warming and establishment of a strong warming trend in the major hurricane development region of the tropical North Atlantic.

Stephan Joanides completed a Master's thesis investigated ENSO variability during the Last Glacial Maximum. Stephan completed 250 oxygen isotope analyses of individual G. ruber from core V21-30 in the eastern tropical Pacific. The results indicated an increase in ENSO variance in the LGM relative to the late Holocene. These data provide the first geologic evidence of ENSO activity during the LGM (Koutavas and Joanides, 2012).

Macaulay Honors students doing fieldwork in Tallman Mountain State Park, New York.

George Olive presenting a poster of his research on El Nino variability at the 2006 Fall Meeting of the American Geophysical Union in San Francisco. George is also the recipient of a Rhodes Scholarship!!!