dc.contributor |
Háskóli Íslands |
dc.contributor |
University of Iceland |
dc.contributor.author |
Aichner, Bernhard |
dc.contributor.author |
Makhmudov, Zafar |
dc.contributor.author |
Rajabov, Ilhomjon |
dc.contributor.author |
Zhang, Qiong |
dc.contributor.author |
Pausata, Francesco S. R. |
dc.contributor.author |
Werner, Martin |
dc.contributor.author |
Heinecke, Liv |
dc.contributor.author |
Kuessner, Marie L. |
dc.contributor.author |
Feakins, Sarah J. |
dc.contributor.author |
Sachse, Dirk |
dc.contributor.author |
Mischke, Steffen |
dc.date.accessioned |
2020-02-04T14:05:25Z |
dc.date.available |
2020-02-04T14:05:25Z |
dc.date.issued |
2019-12-03 |
dc.identifier.citation |
Aichner, B., Makhmudov, Z., Rajabov, I., Zhang, Q., Pausata, F. S. R., Werner, M., et al. (2019). Hydroclimate in the Pamirs was driven by changes in precipitation‐evaporation seasonality since the last glacial period. Geophysical Research Letters, 46, 13,972–13,983. https://doi.org/10.1029/2019GL085202 |
dc.identifier.issn |
0094-8276 |
dc.identifier.issn |
1944-8007 (eISSN) |
dc.identifier.uri |
https://hdl.handle.net/20.500.11815/1505 |
dc.description |
Publisher's version (útgefin grein). |
dc.description.abstract |
The Central Asian Pamir Mountains (Pamirs) are a high-altitude region sensitive to climatic change, with only few paleoclimatic records available. To examine the glacial-interglacial hydrological changes in the region, we analyzed the geochemical parameters of a 31-kyr record from Lake Karakul and performed a set of experiments with climate models to interpret the results. δD values of terrestrial biomarkers showed insolation-driven trends reflecting major shifts of water vapor sources. For aquatic biomarkers, positive δD shifts driven by changes in precipitation seasonality were observed at ca. 31–30, 28–26, and 17–14 kyr BP. Multiproxy paleoecological data and modelling results suggest that increased water availability, induced by decreased summer evaporation, triggered higher lake levels during those episodes, possibly synchronous to northern hemispheric rapid climate events. We conclude that seasonal changes in precipitation-evaporation balance significantly influenced the hydrological state of a large waterbody such as Lake Karakul, while annual precipitation amount and inflows remained fairly constant. |
dc.description.sponsorship |
We are grateful to K. Adler and T. Jonas
for help during coring and M. Rincon
and M. Poehle for help during sample
cleanup and δD analysis. Financial
support to B. A. was provided by the
German Academic Exchange Service
(DAAD) in the form of two travel
grants and by the German Science
Foundation (DFG; project Ai 134/2‐1
and 2‐2). Q. Z. acknowledges support
from the Swedish Research Council VR
project 2013‐06476. The simulations
with CAM3 and EC‐Earth were
performed on resources provided by the
Swedish National Infrastructure for
Computing (SNIC) at NSC and Cray
XC30 HPC systems at ECMWF. We
acknowledge two anonymous
reviewers whose comments improved
the manuscript. |
dc.format.extent |
13972-13983 |
dc.language.iso |
en |
dc.publisher |
American Geophysical Union (AGU) |
dc.relation.ispartofseries |
Geophysical Research Letters;46(23) |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Geophysics |
dc.subject |
Biomarker |
dc.subject |
Climate |
dc.subject |
Geochemistry |
dc.subject |
Hydrology |
dc.subject |
Modelling |
dc.subject |
Paleoclimate |
dc.subject |
Vatnafræði |
dc.subject |
Jarðefnafræði |
dc.subject |
Loftslag |
dc.subject |
Loftslagsbreytingar |
dc.subject |
Fornloftslagsfræði |
dc.title |
Hydroclimate in the Pamirs Was Driven by Changes in Precipitation‐Evaporation Seasonality Since the Last Glacial Period |
dc.type |
info:eu-repo/semantics/article |
dcterms.license |
This is an open access article under the
terms of the Creative Commons
Attribution License, which permits use,
distribution and reproduction in any
medium, provided the original work is
properly cited. |
dc.description.version |
Peer Reviewed |
dc.identifier.journal |
Geophysical Research Letters |
dc.identifier.doi |
10.1029/2019GL085202 |
dc.contributor.department |
Jarðvísindadeild (HÍ) |
dc.contributor.department |
Faculty of Earth Sciences (UI) |
dc.contributor.school |
School of Engineering and Natural Sciences (UI) |
dc.contributor.school |
Verkfræði- og náttúruvísindasvið (HÍ) |