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Pregled bibliografske jedinice broj: 874962

Interannual tropical Pacific sea surface temperature anomalies teleconnection to Northern Hemisphere atmosphere in November


King, Martin P; Herceg Bulić, Ivana; Kucharski, Fred; Keenlyside, Noel
Interannual tropical Pacific sea surface temperature anomalies teleconnection to Northern Hemisphere atmosphere in November // Climate dynamics, 50 (2018), 5-6; 1881-1899 doi:10.1007/s00382-017-3727-5 (međunarodna recenzija, članak, znanstveni)


Naslov
Interannual tropical Pacific sea surface temperature anomalies teleconnection to Northern Hemisphere atmosphere in November

Autori
King, Martin P ; Herceg Bulić, Ivana ; Kucharski, Fred ; Keenlyside, Noel

Izvornik
Climate dynamics (0930-7575) 50 (2018), 5-6; 1881-1899

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
ENSO teleconnections, boreal autumn climate

Sažetak
We investigate the Northern Hemisphere atmospheric circulation anomalies associated to the sea surface temperature (SST) anomalies that are related to the eastern-Pacific and central-Pacific El Nino-Southern Oscillations in the late autumn (November). This research is motivated by the need for improving understanding of the autumn climate conditions which can impact on winter climate, as well as the relative lack of study on the boreal autumn climate processes compared to winter. Using reanalysis and SST datasets available from the late nineteenth century through the recent years, we found that there are two major atmospheric responses ; one is a hemispheric-wide wave number-4 pattern, another has a more annular pattern. Both of these project on the East Atlantic pattern (southward-shifted North Atlantic Oscillation) in the Atlantic sector. Which of the patterns is active is suggested to depend on the background mean flow, with the annular anomaly active in the most recent decades, while the wave-4 pattern in the decades before. This switch is associated with a change of correlation sign in the North Pacific. We discuss the robustness of this finding. The ability of two atmospheric general circulation models (ICTP-AGCM and ECHAM-AGCM) to reproduce the teleconnections is also examined. Evidence provided shows that the wave-4 pattern and the East Atlantic pattern signals can be reproduced by the models, while the shift from this to an annular response for the recent years is not found conclusively.

Izvorni jezik
Engleski

Znanstvena područja
Geofizika



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2013-11-2831 - Klima jadranske regije u njenom globalnom kontekstu (Mirko Orlić, )

Ustanove
Prirodoslovno-matematički fakultet, Zagreb

Autor s matičnim brojem:
Ivana Herceg Bulić, (219312)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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