Molecular records of continental air temperature and monsoon precipitation variability in East Asia spanning the past 130,000 years

Peterse, Francien; Martínez‐García, Alfredo; Zhou, Bin; Beets, C.; Prins, Maarten A.; Zheng, Hongbo; Eglinton, T. I.

doi:10.1016/j.quascirev.2013.11.001

Cited by 132 publications

(99 citation statements)

References 34 publications

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“…3). We can therefore conclude that the waxing and waning of northern hemisphere ice sheets exerts an influence on the timing of hydrologic processes in Asia as already suggested 23 . The remaining 2 kyr of difference that is observed between the simulated calcite d 18 O signal and speleothem records could be attributed to the effect of weak monsoon intervals (WMIs) (Supplementary Fig.…”

supporting

confidence: 78%

Orbital Asian summer monsoon dynamics revealed using an isotope-enabled global climate model

2014

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The Asian summer monsoon dynamics at the orbital scale are a subject of considerable debate. The validity of Asian speleothem d 18 O records as a proxy for summer monsoon intensity is questioned together with the ultimate forcing and timing of the monsoon. Here, using the results of a 150,000-year transient simulation including water isotopes, we demonstrate that Asian speleothem d 18 O records are not a valid proxy for summer monsoon intensity only at the orbital timescale. Rather, our results show that these records reflect annual variations in hydrologic processes and circulation regime over a large part of the Indo-Asian region. Our results support the role of internal forcing, such as sea surface temperature in the equatorial Pacific, to modulate the timing of monsoon precipitation recorded in paleo-proxies inside the Asian region.

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supporting

confidence: 78%

Orbital Asian summer monsoon dynamics revealed using an isotope-enabled global climate model

2014

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“…Both the Oman and Somali upwelling indices increased during further warming after the YD at 11 ka BP. The moisture index drops after the early Holocene to the present in parallel with temperature records from the continent (Herzschuh, 2006;Marcott et al, 2013;Peterse et al, 2014), but upwelling indices remain on about the same level or even increase during the mid-Holocene (Fig. 7).…”

Section: Temperature Differences Between Glacial and The Holocenementioning

confidence: 70%

Glacial–interglacial changes and Holocene variations in Arabian Sea denitrification

et al. 2018

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Abstract. At present, the Arabian Sea has a permanent oxygen minimum zone (OMZ) at water depths between about 100 and 1200 m. Active denitrification in the upper part of the OMZ is recorded by enhanced δ 15 N values in the sediments. Sediment cores show a δ 15 N increase during the middle and late Holocene, which is contrary to the trend in the other two regions of water column denitrification in the eastern tropical North and South Pacific. We calculated composite sea surface temperature (SST) and δ 15 N ratios in time slices of 1000 years of the last 25 kyr to better understand the reasons for the establishment of the Arabian Sea OMZ and its response to changes in the Asian monsoon system. Low δ 15 N values of 4-7 ‰ during the last glacial maximum (LGM) and stadials (Younger Dryas and Heinrich events) suggest that denitrification was inactive or weak during Pleistocene cold phases, while warm interstadials (ISs) had elevated δ 15 N. Fast changes in upwelling intensities and OMZ ventilation from the Antarctic were responsible for these strong millennial-scale variations during the glacial. During the entire Holocene δ 15 N values > 6 ‰ indicate a relatively stable OMZ with enhanced denitrification. The OMZ develops parallel to the strengthening of the SW monsoon and monsoonal upwelling after the LGM. Despite the relatively stable climatic conditions of the Holocene, the δ 15 N records show regionally different trends in the Arabian Sea. In the upwelling areas in the western part of the basin, δ 15 N values are lower during the mid-Holocene (4.2-8.2 ka BP) compared to the late Holocene (< 4.2 ka BP) due to stronger ventilation of the OMZ during the period of the most intense southwest monsoonal upwelling. In contrast, δ 15 N values in the northern and eastern Arabian Sea rose during the last 8 kyr. The displacement of the core of the OMZ from the region of maximum productivity in the western Arabian Sea to its present position in the northeast was established during the middle and late Holocene. This was probably caused by (i) reduced ventilation due to a longer residence time of OMZ waters and (ii) augmented by rising oxygen consumption due to enhanced northeast-monsoon-driven biological productivity. This concurs with the results of the Kiel Climate Model, which show an increase in OMZ volume during the last 9 kyr related to the increasing age of the OMZ water mass.

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“…Such records are critical for interrogating models of Asian climate change. For example, proxy evidence has suggested that the westerlies were stronger during the last glacial (Nagashima et al, 2011); if so, that would have amplified these cold periods in northeast China relative to temperature changes observed in other EAM regions, including the Loess Plateau and Lake Suigetsu in Japan (Nakagawa et al, 2005;Peterse et al, 2014). Therefore, development of robust temperature records from northeast China and a comparison with those from other areas, and particularly more southern Asian sites not as strongly influenced by the westerlies, would allow changes in atmospheric circulation patterns and the extent of monsoon influence to be deciphered.…”

Section: Although Peat Cellulose δmentioning

confidence: 99%

“…The nature and locations of most of these records mean that they are largely restricted to summer monsoon precipitation reconstructions, and temperature records are scarce (Peterse et al, 2014), especially for continental monsoon areas. The northernmost monsooninfluenced regions are likely to be particularly sensitive recorders of wider climate variations, given the interactions of the EAM and the westerlies (Nagashima et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Atmospheric connections with the North Atlantic enhanced the deglacial warming in northeast China

Zheng

Pancost

Liu

et al. 2017

Geology

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Variations in atmospheric circulation across the last deglaciation in the northernmost monsoon-influenced regions of Asia are not well constrained, highlighting a fundamental gap in our understanding of Asian climate. Here we reconstruct continental air temperatures for northeast China across the last deglaciation (past 16 k.y.), based on the distribution of bacterial branched glycerol dialkyl glycerol tetraethers in a sequence of the Hani peat (Jilin Province, northeast China). Our results indicate large (as much as 10 °C) oscillations in temperature in northeast China across the deglaciation, oscillations significantly larger than observed in other temperature records from low-latitude or same-latitude East Asia, but consistent with climate model simulations. This enhanced magnitude, as well as the timing of temperature variations, provides evidence for atmospheric teleconnections with high latitudes; in particular, we suggest that highlatitude cooling associated with Arctic ice expansion and changes in Atlantic Meridional Overturning Circulation enhanced the intensity and lowered the temperature of Eurasian mid-latitude westerlies and northwesterly winds over East Asia during the last glacial, delivering cold air masses to northeast China. During the deglaciation the westerlies and therefore delivery of cold air masses weakened, amplifying the deglacial warming in this region. We conclude that changes in North Atlantic climate had a particularly strong impact on the northernmost parts of the East Asian monsoon-influenced area.

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Molecular records of continental air temperature and monsoon precipitation variability in East Asia spanning the past 130,000 years

Cited by 132 publications

References 34 publications

Orbital Asian summer monsoon dynamics revealed using an isotope-enabled global climate model

Orbital Asian summer monsoon dynamics revealed using an isotope-enabled global climate model

Glacial–interglacial changes and Holocene variations in Arabian Sea denitrification

Atmospheric connections with the North Atlantic enhanced the deglacial warming in northeast China

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