Summer-temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20,000 years

Meyer, Vera; Hefter, Jens; Lohmann, Gerrit; Tiedemann, Ralf; Mollenhauer, Gesine

doi:10.5194/cp-2016-21

Cited by 6 publications

(6 citation statements)

References 96 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, Barr and Clark (2011) considered the first scenario unlikely. In light of our findings, and with evidence for warm gLGM summers being widespread in Siberia (Alfimov and Berman, 2001;Elias, 2001;Kienast et al, 2005;Sher et al, 2005;Berman et al, 2011;Meyer et al, 2016 a), the relatively high precipitation estimates may now appear more likely. As such, and despite the ambiguity in the Pekulney Mountains, the DDM-derived precipitation estimates for the three mountain ranges (the Sredinny, Kankaren and Pekulney) emphasize that summer temperature may have been an important limiting factor for glacier growth in the Pacific Sector of Siberia at the gLGM.…”

Section: Implications For Glacier Growth In Ne Russia At the Glgmsupporting

confidence: 58%

Linking glacier extent and summer temperature in NE Russia - Implications for precipitation during the global Last Glacial Maximum

Meyer

Barr

2017

Palaeogeography, Palaeoclimatology, Palaeoecology

Self Cite

View full text Add to dashboard Cite

General rights Copyright for the publications made accessible via the Queen's University Belfast Research Portal is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights.Take down policy The Research Portal is Queen's institutional repository that provides access to Queen's research output. Every effort has been made to ensure that content in the Research Portal does not infringe any person's rights, or applicable UK laws. If you discover content in the Research Portal that you believe breaches copyright or violates any law, please contact openaccess@qub.ac.uk. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T AbstractIt is generally assumed that during the global Last Glacial Maximum (gLGM, i.e. 18-24 ka BP) dry climatic conditions in NE Russia inhibited the growth of large ice caps and restricted glaciers to mountain ranges. However, recent evidence has been found to suggest that glacial summers in NE Russia were as warm as at present while glaciers were more extensive than today. As a result, we hypothesize that precipitation must have been relatively high in order to compensate for the high summer temperatures and the resulting glacial ablation. We estimate precipitation abundance by mass balance calculations for the paleo-glaciers on Kamchatka and in the Kankaren Range using a degree-day-modelling (DDM) approach, and find that precipitation during the gLGM was likely comparable to, or even exceeded, the modern average. We suggest that stronger than present southerly winds over the Northwest Pacific may have accounted for the abundant precipitation. The DDM-results imply that summer temperature, rather than aridity, limited glacier extent in the southern Pacific Sector of NE Russia during the gLGM.Keywords: Siberia, Last Glacial Maximum, glaciation, precipitation, summer temperature ACCEPTED MANUSCRIPTA C C E P T E D M A N U S C R I P T 2 1) IntroductionAn understanding of the extent of glaciers in East Asia during the global Last Glacial Maximum (gLGM, i.e. 18-24 ka BP, Mix et al. (2001)), and an appreciation of the underlying controlling mechanisms are important for the paleoclimate modelling community, as the presence of large ice-caps during this period would strongly impact climatic conditions in the North Pacific (N Pacific) region (Felzer et al., 2001, Bigg et al., 2008. Glacier extent in Northeast Russia (NE Russia) during the gLGM has been controversially discussed in the literature. For a long time the idea that a...

show abstract

Section: Implications For Glacier Growth In Ne Russia At the Glgmsupporting

confidence: 58%

Linking glacier extent and summer temperature in NE Russia - Implications for precipitation during the global Last Glacial Maximum

Meyer

Barr

2017

Palaeogeography, Palaeoclimatology, Palaeoecology

Self Cite

View full text Add to dashboard Cite

show abstract

“…This isolation is thought to have been located in northeastern Siberia or on the now submerged Bering Sea shelf, lasting between 7000 and 15,000 years (36) during what is known as the "Beringian standstill." Some terrestrial records support the interpretation that this region was an ecological refugium, with spruce, birch, and alder pollen and fossil insects providing evidence of a relatively mild and maritime climate (37). However, given the extremely cold conditions further inland (38), it has remained unclear how habitable conditions could have been maintained.…”

Section: Regional Warming In Beringia Due To Enhanced Pmocmentioning

confidence: 87%

Overturning circulation, nutrient limitation, and warming in the Glacial North Pacific

et al. 2020

View full text Add to dashboard Cite

Although the Pacific Ocean is a major reservoir of heat and CO2, and thus an important component of the global climate system, its circulation under different climatic conditions is poorly understood. Here, we present evidence that during the Last Glacial Maximum (LGM), the North Pacific was better ventilated at intermediate depths and had surface waters with lower nutrients, higher salinity, and warmer temperatures compared to today. Modeling shows that this pattern is well explained by enhanced Pacific meridional overturning circulation (PMOC), which brings warm, salty, and nutrient-poor subtropical waters to high latitudes. Enhanced PMOC at the LGM would have lowered atmospheric CO2—in part through synergy with the Southern Ocean—and supported an equable regional climate, which may have aided human habitability in Beringia, and migration from Asia to North America.

show abstract

“…However, the problem with this assumption is that the western edge of mountain glaciers on the Kamchatka Peninsula is almost 1500 m above the sea level. In addition, Meyer et al (2016) reported that MAT-derived summer SST in east Kamchatka during the Last Glacial Maximum (LGM) was as high as present. If so, then the extent of sea ice in the east Kamchatka Peninsula was limited at this time.…”

Section: Cause Of Provenance Changes In the Okhotsk Seamentioning

confidence: 99%

Sediment provenance variations in the southern Okhotsk Sea over the last 180 ka: Evidence from light and heavy minerals

Wang

Shi

Zou

et al. 2017

Palaeogeography, Palaeoclimatology, Palaeoecology

View full text Add to dashboard Cite

In this study, we investigate light and heavy minerals in sediment core OS03-1 located at the Academy of Sciences Rise of the southern Okhotsk Sea to determine their distributions and sources over the last 180 ka (thousand years). The sediment mainly consists of terrigenous and volcanic detritus. Ubiquitous drop-stones and volcanic detritus throughout the core and high detrital input suggest that sea ice, driven by wind and Kamchatka Current, was the main transport agent of detrital materials to the southern Okhotsk Sea. The ternary diagram of heavy minerals (hornblende-hypersthene-epidote) shows an expansion of detritus provenance from the eastern in cold periods to the northeastern in warm intervals of the Okhotsk Sea. It mainly relates to the shift of Aleutian Low. Combined with previous records, accumulation rates of quartz indicated a maximum extent but not perennial sea ice coverage during the glacial periods.

show abstract

Summer-temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20,000 years

Cited by 6 publications

References 96 publications

Linking glacier extent and summer temperature in NE Russia - Implications for precipitation during the global Last Glacial Maximum

Linking glacier extent and summer temperature in NE Russia - Implications for precipitation during the global Last Glacial Maximum

Overturning circulation, nutrient limitation, and warming in the Glacial North Pacific

Sediment provenance variations in the southern Okhotsk Sea over the last 180 ka: Evidence from light and heavy minerals

Contact Info

Product

Resources

About