Article

 

Summertime ENSO-North African-Asian jet teleconnection and implications for the Indian monsooons Público Deposited

Conteúdo disponível para baixar

Baixar PDF
https://ir.library.oregonstate.edu/concern/articles/bc386k67f

Descriptions

Attribute NameValues
Creator
Abstract
  • Recent findings indicate that ENSO may modulate the strength of the Indian monsoons by altering the meridional tropospheric temperature gradient between Asia and the equatorial Indian Ocean. Here we show that during northern hemisphere summertime El Nino events both colder upper tropospheric temperatures and increased vorticity anomalies are observed within the North African-Asian (NAA) jet. The temperature response within the NAA jet is the dominant ENSO-related change to the meridional tropospheric temperature gradient between Asia and the equatorial Indian Ocean. Forced solutions of the linearized barotropic vorticity equation indicate that these anomalies within the NAA jet are a response to northern hemisphere summertime El Nino-related convective activity over the equatorial Pacific Ocean. Additional experiments indicate that westward propagating anomalies in both the tropics and middle latitudes produce the anomaly response within the NAA jet. These findings suggest that the teleconnection linking ENSO and the monsoons is mediated by the response of the NAA jet to westward propagating Rossby waves.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Shaman, J., & Tziperman, E. (2007). Summertime ENSO-North African-Asian jet teleconnection and implications for the Indian monsooons. Geophysical Research Letters, 34. doi:10.1029/2006GL029143
Journal Title
Journal Volume
  • 34
Declaração de direitos
Funding Statement (additional comments about funding)
  • McDonnell Foundation. NSF Climate Dynamics program grant ATM 0351123.
Publisher
Language
Replaces

Relações

Parents:

This work has no parents.

Itens