Matches in SemOpenAlex for { <https://semopenalex.org/work/W4328118246> ?p ?o ?g. }
- W4328118246 abstract "The Southern Hemisphere westerly winds (SWW) play a critical role in global climate, yet their behavior on decadal to centennial timescales, and the mechanisms driving these changes during the preindustrial era, remain poorly understood. We present a decadally resolved record of dust compositions using strontium and neodymium isotope ratios in mineral dust from the Siple Dome ice core, Antarctica, to explore the potential that abrupt changes in SWW behavior occurred over the past millennium. The record spans portions of the Medieval Climate Anomaly (MCA) and the Little Ice Age (LIA) intervals as defined in the Northern Hemisphere. We find evidence of an abrupt strengthening of atmospheric circulation during the MCA at ∼1125 CE (825 BP) that persisted for about 60 yr, indicating increased influence of Patagonia-sourced dust. This occurs during an extended positive phase of Southern Annular Mode (SAM+)-like conditions, characterized by high SWW velocities and a southerly shift of the main wind belt toward ∼60°S, suggesting that rapid changes in SWW strength could occur under the present SAM+ pattern. A second 20 yr long shift in dust compositions during the LIA at ∼1748 CE (200 BP) is coincident with higher dust delivery to Siple Dome, and may indicate increased dust emissions related to glacier activity in Patagonia. The new Siple Dome ice core data set demonstrates that Sr-Nd isotopes can be used to trace shifts in atmospheric circulation on decadal timescales." @default.
- W4328118246 created "2023-03-22" @default.
- W4328118246 creator A5001784726 @default.
- W4328118246 creator A5027992695 @default.
- W4328118246 creator A5042537454 @default.
- W4328118246 creator A5052477206 @default.
- W4328118246 creator A5067690055 @default.
- W4328118246 creator A5091285519 @default.
- W4328118246 date "2023-03-29" @default.
- W4328118246 modified "2023-10-16" @default.
- W4328118246 title "Abrupt Changes in Atmospheric Circulation During the Medieval Climate Anomaly and Little Ice Age Recorded by Sr‐Nd Isotopes in the Siple Dome Ice Core, Antarctica" @default.
- W4328118246 cites W1556220029 @default.
- W4328118246 cites W1890620195 @default.
- W4328118246 cites W1892217302 @default.
- W4328118246 cites W1936125475 @default.
- W4328118246 cites W1963960391 @default.
- W4328118246 cites W1965841742 @default.
- W4328118246 cites W1971816180 @default.
- W4328118246 cites W1977497513 @default.
- W4328118246 cites W1978002563 @default.
- W4328118246 cites W1978690268 @default.
- W4328118246 cites W1981733902 @default.
- W4328118246 cites W1983476264 @default.
- W4328118246 cites W1985246090 @default.
- W4328118246 cites W1985378157 @default.
- W4328118246 cites W1994830780 @default.
- W4328118246 cites W1995642042 @default.
- W4328118246 cites W1996021864 @default.
- W4328118246 cites W1997453614 @default.
- W4328118246 cites W2002876051 @default.
- W4328118246 cites W2009372630 @default.
- W4328118246 cites W2011422669 @default.
- W4328118246 cites W2015226467 @default.
- W4328118246 cites W2018156694 @default.
- W4328118246 cites W2024863878 @default.
- W4328118246 cites W2026207505 @default.
- W4328118246 cites W2029276637 @default.
- W4328118246 cites W2033744233 @default.
- W4328118246 cites W2037357443 @default.
- W4328118246 cites W2042476750 @default.
- W4328118246 cites W2047311981 @default.
- W4328118246 cites W2048632557 @default.
- W4328118246 cites W2049739979 @default.
- W4328118246 cites W2054714035 @default.
- W4328118246 cites W2056871556 @default.
- W4328118246 cites W2057239710 @default.
- W4328118246 cites W2057858033 @default.
- W4328118246 cites W2060706280 @default.
- W4328118246 cites W2062927038 @default.
- W4328118246 cites W2067475304 @default.
- W4328118246 cites W2071518375 @default.
- W4328118246 cites W2071743224 @default.
- W4328118246 cites W2078999497 @default.
- W4328118246 cites W2079810753 @default.
- W4328118246 cites W2084891845 @default.
- W4328118246 cites W2088223235 @default.
- W4328118246 cites W2090246574 @default.
- W4328118246 cites W2099800029 @default.
- W4328118246 cites W2116157750 @default.
- W4328118246 cites W2117517893 @default.
- W4328118246 cites W2125822841 @default.
- W4328118246 cites W2133290278 @default.
- W4328118246 cites W2133399066 @default.
- W4328118246 cites W2136620392 @default.
- W4328118246 cites W2136954375 @default.
- W4328118246 cites W2139551431 @default.
- W4328118246 cites W2144073904 @default.
- W4328118246 cites W2145624078 @default.
- W4328118246 cites W2146511959 @default.
- W4328118246 cites W2147027563 @default.
- W4328118246 cites W2152867619 @default.
- W4328118246 cites W2156933844 @default.
- W4328118246 cites W2160421593 @default.
- W4328118246 cites W2161458658 @default.
- W4328118246 cites W2166681005 @default.
- W4328118246 cites W2167945940 @default.
- W4328118246 cites W2173841134 @default.
- W4328118246 cites W2277868022 @default.
- W4328118246 cites W2291506047 @default.
- W4328118246 cites W2336125544 @default.
- W4328118246 cites W2392209212 @default.
- W4328118246 cites W2404421203 @default.
- W4328118246 cites W2512772252 @default.
- W4328118246 cites W2604329916 @default.
- W4328118246 cites W2609433094 @default.
- W4328118246 cites W2625393249 @default.
- W4328118246 cites W2738105496 @default.
- W4328118246 cites W2739777128 @default.
- W4328118246 cites W2775159833 @default.
- W4328118246 cites W2796563914 @default.
- W4328118246 cites W2884853325 @default.
- W4328118246 cites W2890543069 @default.
- W4328118246 cites W2890759032 @default.
- W4328118246 cites W2891016557 @default.
- W4328118246 cites W2911391578 @default.
- W4328118246 cites W2914658636 @default.
- W4328118246 cites W2964501211 @default.
- W4328118246 cites W2972420624 @default.
- W4328118246 cites W2972568455 @default.
- W4328118246 cites W2973758203 @default.