Mean annula temperature reconstruction for East Asia
Fuente:
PANGAEA
Gespeichert in:
| Hauptverfasser: | , , , , , , , |
|---|---|
| Format: | Dataset Open Access |
| Sprache: | en |
| Veröffentlicht: |
PANGAEA
2011
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1867170472192376832 |
|---|---|
| author | Peterse, Francien Prins, Maarten Arnoud Beets, Christiaan J Troelstra, Simon Zheng, Hongbo Gu, Zhaoyan Schouten, Stefan Sinninghe Damsté, Jaap S |
| author_facet | Peterse, Francien Prins, Maarten Arnoud Beets, Christiaan J Troelstra, Simon Zheng, Hongbo Gu, Zhaoyan Schouten, Stefan Sinninghe Damsté, Jaap S |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Our understanding of the continental climate development in East Asia is mainly based on loess-paleosol; sequences and summer monsoon precipitation reconstructions based on oxygen isotopes (?18O) of stalagmites from several Chinese caves. Based on these records, it is thought that East Asian Summer Monsoon (EASM) precipitation generally follows Northern Hemisphere (NH) summer insolation. However, not much is known about the magnitude and timing of deglacial warming on the East Asian continent. In this study we reconstruct continental air temperatures for central China covering the last 34,000 yr, based on the distribution of fossil branched tetraether membrane lipids of soil bacteria in a loess-paleosol sequence from the Mangshan loess plateau. The results indicate that air temperature varied in phase with NH summer insolation, and that the onset of deglacial warming at ~19 kyr BP is parallel in timing with other continental records from e.g. Antarctica, southern Africa and South-America. The air temperature increased from ~15 °C at the onset of the warming to a maximum of ~27 °C in the early Holocene (~12 kyr BP), in agreement with the temperature increase inferred from e.g. pollen and phytolith data, and permafrost limits in central China. Comparison of the tetraether membrane lipid-derived temperature record with loess-paleosol proxy records and stalagmite ?18O records shows that the strengthening of EASM precipitation lagged that of deglacial warming by ca. 3 kyr. Moreover, intense soil formation in the loess deposits, caused by substantial increases in summer monsoon precipitation, only started around 12 kyr BP (ca. 7 kyr lag). Our results thus show that the intensification of EASM precipitation unambiguously lagged deglacial warming and NH summer insolation, and may contribute to a better understanding of the mechanisms controlling ice age terminations. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_881187 |
| institution | PANGAEA |
| language | en |
| publishDate | 2011 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Mean annula temperature reconstruction for East Asia Peterse, Francien Prins, Maarten Arnoud Beets, Christiaan J Troelstra, Simon Zheng, Hongbo Gu, Zhaoyan Schouten, Stefan Sinninghe Damsté, Jaap S NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University Our understanding of the continental climate development in East Asia is mainly based on loess-paleosol; sequences and summer monsoon precipitation reconstructions based on oxygen isotopes (?18O) of stalagmites from several Chinese caves. Based on these records, it is thought that East Asian Summer Monsoon (EASM) precipitation generally follows Northern Hemisphere (NH) summer insolation. However, not much is known about the magnitude and timing of deglacial warming on the East Asian continent. In this study we reconstruct continental air temperatures for central China covering the last 34,000 yr, based on the distribution of fossil branched tetraether membrane lipids of soil bacteria in a loess-paleosol sequence from the Mangshan loess plateau. The results indicate that air temperature varied in phase with NH summer insolation, and that the onset of deglacial warming at ~19 kyr BP is parallel in timing with other continental records from e.g. Antarctica, southern Africa and South-America. The air temperature increased from ~15 °C at the onset of the warming to a maximum of ~27 °C in the early Holocene (~12 kyr BP), in agreement with the temperature increase inferred from e.g. pollen and phytolith data, and permafrost limits in central China. Comparison of the tetraether membrane lipid-derived temperature record with loess-paleosol proxy records and stalagmite ?18O records shows that the strengthening of EASM precipitation lagged that of deglacial warming by ca. 3 kyr. Moreover, intense soil formation in the loess deposits, caused by substantial increases in summer monsoon precipitation, only started around 12 kyr BP (ca. 7 kyr lag). Our results thus show that the intensification of EASM precipitation unambiguously lagged deglacial warming and NH summer insolation, and may contribute to a better understanding of the mechanisms controlling ice age terminations. |
| title | Mean annula temperature reconstruction for East Asia |
| topic | NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University |
| url | https://doi.org/10.1594/PANGAEA.881187 |