Millennial-scale pulsebeat of glaciation in the Southern Alps of New Zealand

Strand, Peter D.; Schaefer, Joerg M.; Putnam, Aaron E.; Denton, George H.; Barrell, David; Koffman, T. N. B.; Schwartz, Roseanne

doi:10.1016/j.quascirev.2019.07.022

Cited by 36 publications

(28 citation statements)

References 42 publications

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“…While we cannot distinguish the relative importance of each mechanism, we speculate that at least the GBR and New Zealand are influenced by the same or related regional drivers. This is based on proximity and the similar timing of warming at both sites that appears to coincide with an increase in atmospheric CO 2 in New Zealand glaciers (e.g., Kaplan et al, 2010; Koffman et al, 2017; Strand et al, 2019).…”

Section: Discussionmentioning

confidence: 91%

“…regional drivers. This is based on proximity and the similar timing of warming at both sites that appears to coincide with an increase in atmospheric CO 2 in New Zealand glaciers (e.g., Kaplan et al, 2010;Koffman et al, 2017;Strand et al, 2019).…”

Section: Paleoceanography and Paleoclimatologymentioning

confidence: 95%

“…(e.g., Kaplan et al, 2013;Kelley et al, 2014;Koffman et al, 2017;Putnam et al, 2010;Putnam, Schaefer, Denton, Barrell, Birkel, et al, 2013;Shulmeister et al, 2019;Strand et al, 2019). Although nearby, there are fewer proxy studies associated with this interval in Australia or on the GBR.…”

Section: Paleoceanography and Paleoclimatologymentioning

confidence: 99%

“…In the upper Rakaia Valley of New Zealand, glacier-inferred temperatures were about 1°C cooler than modern from~13.140-11.620 ka (Koffman et al, 2017), comparable to the temperatures at NOG and HYD. The glacial retreat in New Zealand, during Northern Hemisphere Heinrich Stadials (e.g., Heinrich Stadial 1 and Heinrich Stadial 0/YDC) (Koffman et al, 2017;Strand et al, 2019) is paralleled by warming in the Chilean Lake District (Denton et al, 1999;Moreno et al, 2015). Strand et al (2019) suggested that this pan-Pacific signal during the YDC is due to either atmospheric or oceanic transport of heat leading to southerly shifts in the thermal equator coinciding with winter-centric Heinrich Stadials.…”

Section: Paleoceanography and Paleoclimatologymentioning

confidence: 99%

“…The glacial retreat in New Zealand, during Northern Hemisphere Heinrich Stadials (e.g., Heinrich Stadial 1 and Heinrich Stadial 0/YDC) (Koffman et al, 2017;Strand et al, 2019) is paralleled by warming in the Chilean Lake District (Denton et al, 1999;Moreno et al, 2015). Strand et al (2019) suggested that this pan-Pacific signal during the YDC is due to either atmospheric or oceanic transport of heat leading to southerly shifts in the thermal equator coinciding with winter-centric Heinrich Stadials. In turn, this pushes the Southern Hemisphere westerlies, the Australasian monsoon system, and the Subtropical front at the northern edge of the Southern Ocean southward (Chiang et al, 2009;Strand et al, 2019).…”

Section: Paleoceanography and Paleoclimatologymentioning

confidence: 99%

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Coral Record of Younger Dryas Chronozone Warmth on the Great Barrier Reef

Brenner

Linsley

Webster

et al. 2020

Paleoceanog and Paleoclimatol

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The Great Barrier Reef (GBR) is an internationally recognized and widely studied ecosystem, yet little is known about its sea surface temperature (SST) evolution since the Last Glacial Maximum (LGM) (~20 kyr BP). Here, we present the first paleo‐application of Isopora coral‐derived SST calibrations to a suite of 25 previously published fossil Isopora from the central GBR spanning ~25–11 kyr BP. The resultant multicoral Sr/Ca‐ and δ18O‐derived SST anomaly (SSTA) histories are placed within the context of published relative sea level, reef sequence, and coralgal reef assemblage evolution. Our new calculations indicate SSTs were cooler on average by ~5–5.5°C at Noggin Pass (~17°S) and ~7–8°C at Hydrographer's Passage (~20°S) (Sr/Ca‐derived) during the LGM, in line with previous estimates (Felis et al., 2014, https://doi.org/10.1038/ncomms5102). We focus on contextualizing the Younger Dryas Chronozone (YDC, ~12.9–11.7 kyr BP), whose Southern Hemisphere expression, in particular in Australia, is elusive and poorly constrained. Our record does not indicate cooling during the YDC with near‐modern temperatures reached during this interval on the GBR, supporting an asymmetric hemispheric presentation of this climate event. Building on a previous study (Felis et al., 2014, https://doi.org10.1038/ncomms5102), these fossil Isopora SSTA data from the GBR provide new insights into the deglacial reef response, with near‐modern warming during the YDC, since the LGM.

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Section: Discussionmentioning

confidence: 91%

Section: Paleoceanography and Paleoclimatologymentioning

confidence: 95%