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Ramisch A, Lockot G, Haberzettl T, et al. A persistent northern boundary of Indian Summer Monsoon precipitation over Central Asia during the Holocene. Sci Rep. 2016;6:25791doi: 10.1038/srep25791.
Ramisch, A., Lockot, G., Haberzettl, T., Hartmann, K., Kuhn, G., Lehmkuhl, F., Schimpf, S., Schulte, P., Stauch, G., Wang, R., Wünnemann, B., Yan, D., Zhang, Y., & Diekmann, B. (2016). A persistent northern boundary of Indian Summer Monsoon precipitation over Central Asia during the Holocene. Scientific reports, 625791. https://doi.org/10.1038/srep25791
Ramisch, Arne, et al. "A persistent northern boundary of Indian Summer Monsoon precipitation over Central Asia during the Holocene." Scientific reports vol. 6 (2016): 25791. doi: https://doi.org/10.1038/srep25791
Ramisch A, Lockot G, Haberzettl T, Hartmann K, Kuhn G, Lehmkuhl F, Schimpf S, Schulte P, Stauch G, Wang R, Wünnemann B, Yan D, Zhang Y, Diekmann B. A persistent northern boundary of Indian Summer Monsoon precipitation over Central Asia during the Holocene. Sci Rep. 2016 May 13;6:25791. doi: 10.1038/srep25791. PMID: 27173918; PMCID: PMC4865755.
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Sci Rep. 2016 May 13;6:25791. doi: 10.1038/srep25791.

A persistent northern boundary of Indian Summer Monsoon precipitation over Central Asia during the Holocene.

Scientific reports

Arne Ramisch, Gregori Lockot, Torsten Haberzettl, Kai Hartmann, Gerhard Kuhn, Frank Lehmkuhl, Stefan Schimpf, Philipp Schulte, Georg Stauch, Rong Wang, Bernd Wünnemann, Dada Yan, Yongzhan Zhang, Bernhard Diekmann

Affiliations

  1. Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany.
  2. Institute of Geographical Science, Free University of Berlin, Berlin, Germany.
  3. Institute of Geography, Friedrich-Schiller-University Jena, Jena, Germany.
  4. Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany.
  5. Department of Geography, RWTH Aachen University, Aachen, Germany.
  6. Nanjing Integrated Centre for Earth System Science, Nanjing, China.
  7. School of Geography and Oceanography, Nanjing University, Nanjing, China.
  8. Institute of Earth and Environmental Science, University of Potsdam, Potsdam-Golm, Germany.

PMID: 27173918 PMCID: PMC4865755 DOI: 10.1038/srep25791

Abstract

Extra-tropical circulation systems impede poleward moisture advection by the Indian Summer Monsoon. In this context, the Himalayan range is believed to insulate the south Asian circulation from extra-tropical influences and to delineate the northern extent of the Indian Summer Monsoon in central Asia. Paleoclimatic evidence, however, suggests increased moisture availability in the Early Holocene north of the Himalayan range which is attributed to an intensification of the Indian Summer Monsoon. Nevertheless, mechanisms leading to a surpassing of the Himalayan range and the northern maximum extent of summer monsoonal influence remain unknown. Here we show that the Kunlun barrier on the northern Tibetan Plateau [~36°N] delimits Indian Summer Monsoon precipitation during the Holocene. The presence of the barrier relocates the insulation effect 1,000 km further north, allowing a continental low intensity branch of the Indian Summer Monsoon which is persistent throughout the Holocene. Precipitation intensities at its northern extent seem to be driven by differentiated solar heating of the Northern Hemisphere indicating dependency on energy-gradients rather than absolute radiation intensities. The identified spatial constraints of monsoonal precipitation will facilitate the prediction of future monsoonal precipitation patterns in Central Asia under varying climatic conditions.

References

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