The thermal oceanographic signal of El Niño reconstructed from a Kiritimati Island coral

Environmental control of the oxygen isotope composition of Porites coral microatolls

“…Further d 18 O water sample analyses are required to test this hypothesis. Despite the differences in mean values, the microatoll and dome-shaped Porites d 18 O records show similar patterns of variability, though the stacked microatoll d 18 O record does not show the spawning-related spikes of theEvans et al (1999) record. The average amplitude of the seasonal cycle for each record is very similar: 0.23& for the microatoll stack record, 0.26& forEvans et al (1998a), and 0.25& forNurhati et al (2009) (…”

Applications of proxy system modeling in high resolution paleoclimatology

“…In general, the resulting time, frequency and signal resolution of age-modeled paleodata series is limited by number, frequency, time span, accuracy and precision of chronological observations and stratigraphic constraints, slope of the ageedepth curve, replication, and the extent of mixing, transport, integration, diffusion and hiatuses imposed by the sensor, archive and observation processes (e.g. see Chatfield, 1989;Cook et al, 1995;Meese et al, 1997;Evans et al, 1999;Huang et al, 2000;Burgess and Wright, 2003).…”

El Niño: Dynamics, its role in climate change, and its effects on climate variability

“…A lthoufh the climatic signal of La Niñ a is difficult to detect at times in the past, the teleconnections (far away effects) of El Niñ o are more easily detectable, and several studies have been performed to reconstruct the past occurrence of El Niñ o. These studies are based variously on coral mortality [29,30], flooding in normally arid regions [31], and the regular Nile River flood [32,33]. El Niñ o, by shifting the position of Walker circulation, tends to produce elevated precipitation in northeastern Africa, causing intensification of the Nile River flooding.…”