Publicaties | Kaarten

nieuwe zoekopdracht

[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina
Indian monsoon derailed by a North Atlantic wavetrain
Borah, P.J.; Venugopal, V.; Sukhatme, J.; Muddebihal, P.; Goswami, B.N. (2020). Indian monsoon derailed by a North Atlantic wavetrain. Science (Wash.) 370(6522): 1335-1338. https://dx.doi.org/10.1126/science.aay6043
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Auteurs  Top 
  • Borah, P.J.
  • Venugopal, V.
  • Sukhatme, J.
  • Muddebihal, P.
  • Goswami, B.N.
Abstract
    The forecast of Indian monsoon droughts has been predicated on the notion of a season-long rainfall deficit linked to a warm equatorial Pacific. Here we show that nearly half of all droughts over the past century differ from this paradigm in that they (i) occur when Pacific temperatures are near-neutral and (ii) are subseasonal phenomena, characterized by an abrupt decline in late-season rainfall. This severe subseasonal rainfall deficit can be associated with a Rossby wave from mid-latitudes. Specifically, we find that the interaction of upper-level winds with an episodic North Atlantic vorticity anomaly results in a wavetrain that curves toward East Asia, disrupting the monsoon. This atmospheric teleconnection offers an avenue for improved predictability of droughts, especially in the absence of telltale signatures in the Pacific.
Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs 
IMIS is ontwikkeld en wordt gehost door het VLIZ.