Matches in SemOpenAlex for { <https://semopenalex.org/work/W4322004588> ?p ?o ?g. }
Showing items 1 to 68 of
68
with 100 items per page.
- W4322004588 abstract "Changes in ice sheet size and configuration impact global moisture and heat transport, but few proxy records examine these impacts. High-latitude precipitation-isotope proxy records are often interpreted to reflect temperature change, but can also reflect changes in moisture source. We present independent sub-centennial-scale records of summer temperature and summer precipitation δ2H from the same lake sediment archive on northeastern Baffin Island. We also examine published TraCE-21k transient model simulation results. These records span from 12 to 7 ka, when the Laurentide Ice Sheet underwent major retreat. The correlation structure between summer temperature and precipitation δ2H on northeastern Baffin Island changed from negative to positive around 10 ka. We interpret this change in correlation structure to indicate a shift in moisture sources to northeastern Baffin Island. TraCE-21k results suggest that moisture sources in this region are controlled by the relative strength of the high pressure systems and associated anticyclonic circulation over the Greenland and Laurentide ice sheets. We therefore interpret the proxy records as follows: when the Laurentide high dominated prior to 10 ka, northerly winds brought cold, dry Arctic air to the region, allowing 2H-enriched local sea breezes to provide most of the moisture to Baffin Island. After 10 ka, the Greenland high dominated, causing southerly flow to carry warm, moist, 2H-depleted air masses to northeastern Baffin Island. Regional centennial-scale cooling events caused by periodic freshwater inputs to the Labrador Sea throughout the Early Holocene were also associated with intervals of 2H-enriched summer precipitation. This study provides evidence that atmospheric circulation was influenced by the waning continental ice sheets. Similar ice-sheet influences are critical to consider when interpreting precipitation isotope proxy records spanning periods of dramatic ice-sheet change. These results demonstrate that precipitation isotopes can reflect changes in atmospheric circulation in the geologic record." @default.
- W4322004588 created "2023-02-26" @default.
- W4322004588 creator A5008642242 @default.
- W4322004588 creator A5010552942 @default.
- W4322004588 creator A5013707453 @default.
- W4322004588 creator A5014728999 @default.
- W4322004588 creator A5020826484 @default.
- W4322004588 creator A5024307669 @default.
- W4322004588 creator A5051270522 @default.
- W4322004588 creator A5057854657 @default.
- W4322004588 creator A5067273143 @default.
- W4322004588 creator A5068358829 @default.
- W4322004588 creator A5089920353 @default.
- W4322004588 date "2023-05-15" @default.
- W4322004588 modified "2023-09-29" @default.
- W4322004588 title "Early Holocene Laurentide Ice Sheet retreat influenced summer atmospheric circulation in the North American Arctic: Evidence from precipitation isotope and temperature proxy records and a climate model" @default.
- W4322004588 doi "https://doi.org/10.5194/egusphere-egu23-12634" @default.
- W4322004588 hasPublicationYear "2023" @default.
- W4322004588 type Work @default.
- W4322004588 citedByCount "0" @default.
- W4322004588 crossrefType "posted-content" @default.
- W4322004588 hasAuthorship W4322004588A5008642242 @default.
- W4322004588 hasAuthorship W4322004588A5010552942 @default.
- W4322004588 hasAuthorship W4322004588A5013707453 @default.
- W4322004588 hasAuthorship W4322004588A5014728999 @default.
- W4322004588 hasAuthorship W4322004588A5020826484 @default.
- W4322004588 hasAuthorship W4322004588A5024307669 @default.
- W4322004588 hasAuthorship W4322004588A5051270522 @default.
- W4322004588 hasAuthorship W4322004588A5057854657 @default.
- W4322004588 hasAuthorship W4322004588A5067273143 @default.
- W4322004588 hasAuthorship W4322004588A5068358829 @default.
- W4322004588 hasAuthorship W4322004588A5089920353 @default.
- W4322004588 hasConcept C111368507 @default.
- W4322004588 hasConcept C123750103 @default.
- W4322004588 hasConcept C127313418 @default.
- W4322004588 hasConcept C132651083 @default.
- W4322004588 hasConcept C140345934 @default.
- W4322004588 hasConcept C205325660 @default.
- W4322004588 hasConcept C2780021526 @default.
- W4322004588 hasConcept C33683781 @default.
- W4322004588 hasConcept C49204034 @default.
- W4322004588 hasConcept C518008717 @default.
- W4322004588 hasConceptScore W4322004588C111368507 @default.
- W4322004588 hasConceptScore W4322004588C123750103 @default.
- W4322004588 hasConceptScore W4322004588C127313418 @default.
- W4322004588 hasConceptScore W4322004588C132651083 @default.
- W4322004588 hasConceptScore W4322004588C140345934 @default.
- W4322004588 hasConceptScore W4322004588C205325660 @default.
- W4322004588 hasConceptScore W4322004588C2780021526 @default.
- W4322004588 hasConceptScore W4322004588C33683781 @default.
- W4322004588 hasConceptScore W4322004588C49204034 @default.
- W4322004588 hasConceptScore W4322004588C518008717 @default.
- W4322004588 hasLocation W43220045881 @default.
- W4322004588 hasOpenAccess W4322004588 @default.
- W4322004588 hasPrimaryLocation W43220045881 @default.
- W4322004588 hasRelatedWork W151459676 @default.
- W4322004588 hasRelatedWork W1996678998 @default.
- W4322004588 hasRelatedWork W2030014495 @default.
- W4322004588 hasRelatedWork W2039827801 @default.
- W4322004588 hasRelatedWork W2049857251 @default.
- W4322004588 hasRelatedWork W2157698340 @default.
- W4322004588 hasRelatedWork W2168902415 @default.
- W4322004588 hasRelatedWork W3163102160 @default.
- W4322004588 hasRelatedWork W4220855586 @default.
- W4322004588 hasRelatedWork W4240693462 @default.
- W4322004588 isParatext "false" @default.
- W4322004588 isRetracted "false" @default.
- W4322004588 workType "article" @default.