Now showing items 1-9 of 9

    • Assessing sedimentary records of paleohurricane activity using modeled hurricane climatology 

      Woodruff, Jonathan D.; Donnelly, Jeffrey P.; Emanuel, Kerry A.; Lane, D. Philip (American Geophysical Union, 2008-09-18)
      Patterns of overwash deposition observed within back-barrier sediment archives can indicate past changes in tropical cyclone activity; however, it is necessary to evaluate the significance of observed trends in the context ...
    • Climatically driven emissions of hydrocarbons from marine sediments during deglaciation 

      Hill, T. M.; Kennett, J. P.; Valentine, David L.; Yang, Z.; Reddy, Christopher M.; Nelson, Robert K.; Behl, R. J.; Robert, C.; Beaufort, L. (2006-07-31)
      Marine hydrocarbon seepage emits oil and gas, including methane (~30 Tg CH4/year), to the ocean and atmosphere. Sediments from the California margin contain preserved tar, primarily formed via hydrocarbon weathering at ...
    • Coral Sr-U thermometry 

      DeCarlo, Thomas M.; Gaetani, Glenn; Cohen, Anne L.; Foster, Gavin L.; Alpert, Alice; Stewart, Joseph A. (John WIley & Sons, 2016-06-11)
      Coral skeletons archive past climate variability with unrivaled temporal resolution. However, extraction of accurate temperature information from coral skeletons has been limited by “vital effects,” which confound, and ...
    • How unusual is the 2012–2014 California drought? 

      Griffin, Daniel; Anchukaitis, Kevin J. (John Wiley & Sons, 2014-12-30)
      For the past three years (2012–2014), California has experienced the most severe drought conditions in its last century. But how unusual is this event? Here we use two paleoclimate reconstructions of drought and precipitation ...
    • Identifying coherent spatiotemporal modes in time-uncertain proxy paleoclimate records 

      Anchukaitis, Kevin J.; Tierney, Jessica E. (2012-07)
      High-resolution sedimentary paleoclimate proxy records offer the potential to expand the detection and analysis of decadal- to centennial-scale climate variability during recent millennia, particularly within regions where ...
    • Leaf wax biomarkers in transit record river catchment composition 

      Ponton, Camilo; West, A. Joshua; Feakins, Sarah J.; Galy, Valier (John Wiley & Sons, 2014-09-24)
      Rivers carry organic molecules derived from terrestrial vegetation to sedimentary deposits in lakes and oceans, storing information about past climate and erosion, as well as representing a component of the carbon cycle. ...
    • On the Abyssal circulation in the glacial Atlantic 

      Marchal, Olivier; Curry, William B. (American Meteorological Society, 2008-09)
      An inverse method is used to evaluate the information contained in sediment data for the Atlantic basin during the Last Glacial Maximum (defined here as the time interval 18–21 kyr before present). The data being considered ...
    • Tropical cyclone wind speed constraints from resultant storm surge deposition : a 2500 year reconstruction of hurricane activity from St. Marks, FL 

      Brandon, Christine M.; Woodruff, Jonathan D.; Lane, D. Philip; Donnelly, Jeffrey P. (John Wiley & Sons, 2013-08-22)
      Recent work suggests that the patterns of intense (≥category 3 on the Saffir-Simpson scale) hurricane strikes over the last few millennia might differ from that of overall hurricane activity during this period. Prior studies ...
    • Winter-to-summer precipitation phasing in southwestern North America : a multicentury perspective from paleoclimatic model-data comparisons 

      Coats, Sloan; Smerdon, Jason E.; Seager, Richard; Griffin, Daniel; Cook, Benjamin I. (John Wiley & Sons, 2015-08-19)
      The phasing of winter-to-summer precipitation anomalies in the North American monsoon (NAM) region 2 (113.25°W–107.75°W, 30°N–35.25°N—NAM2) of southwestern North America is analyzed in fully coupled simulations of the Last ...