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Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau
Liu, F.; Wang, X.; Wang, H.; Orsolini, Y.J.; Cong, Z.; Gao, Y.; Kang, S. (2020). Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau. Nat. Clim. Chang. 10(11): 1037-1044. https://dx.doi.org/10.1038/s41558-020-0881-2
In: Nature Climate Change. Nature Publishing Group: London. ISSN 1758-678X; e-ISSN 1758-6798
Is gerelateerd aan:
Sarangi, C.; Qian, Y.; Rittger, K.; Ruby Leung, L.; Chand, D.; Bormann, K.J.; Painter, T.H. (2020). Dust dominates high-altitude snow darkening and melt over high-mountain Asia. Nat. Clim. Chang. 10(11): 1045-1051. https://dx.doi.org/10.1038/s41558-020-00909-3, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Auteurs  Top 
  • Liu, F.
  • Wang, X.
  • Wang, H.
  • Orsolini, Y.J.
  • Cong, Z.
  • Gao, Y.
  • Kang, S.
Abstract
    The Tibetan Plateau (TP) has recently been polluted by anthropogenic emissions transported from South Asia, but the mechanisms conducive to this aerosol delivery are poorly understood. Here we show that winter loss of Arctic sea ice over the subpolar North Atlantic boosts aerosol transport toward the TP in April, when the aerosol loading is at its climatological maximum and preceding the Indian summer monsoon onset. Low sea ice in February weakens the polar jet, causing decreased Ural snowpack via reduced transport of warm, moist oceanic air into the high-latitude Eurasian interior. This diminished snowpack persists through April, reinforcing the Ural pressure ridge and East Asian trough, segments of a quasi-stationary Rossby wave train extending across Eurasia. These conditions facilitate an enhanced subtropical westerly jet at the southern edge of the TP, invigorating upslope winds that combine with mesoscale updrafts to waft emissions over the Himalayas onto the TP.
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