St. Petersburg Coastal and Marine Science Center
Information on natural climatic variability is needed to establish possible causes of climate variation on human timescales and help discriminate between natural variability and any human-related changes. Better understanding of the frequency and magnitude of natural climate variability during the Holocene will lead to better forecasts of future change and its societal impact.
Gulf of Mexico-Caribbean Paleoclimate Reconstruction
Highly-resolved records of past climate variability are increasingly important in light of the current need to differentiate between natural and anthropogenic climate change. Studies concentrate on the last few thousand years. Analysis of sediment cores are at sub-millennial to decadal resolution.
Late Holocene Paleoclimate and Hypoxia of Coastal Sediments
Benthic foraminifera, and other proxies, in marine and marsh sediment cores are used to identify anthropogenic change and natural variability including hypoxia, climatic cycles, salinity, and sea level records on various time scales.
Paleoclimate Proxy Calibration
Microfossils recovered in a sediment trap in the northern Gulf of Mexico are used to better assess the control of temperature and salinity on the composition of microfossil assemblages and the chemical composition of their shells. The new information will be used to develop better estimates of past conditions from analyses of microfossils in sediment cores.
Linear extension rates of massive corals from the Dry Tortugas National Park (DRTO), Florida - USGS Open-File Report