El Niño–Southern Oscillation (ENSO) Sea Level Pressure Anomalies in the Western Pacific

  • 17 September 2015
  • Number of views: 2379
El Niño–Southern Oscillation (ENSO) Sea Level Pressure Anomalies in the Western Pacific

Research supported by NOAA CPO’s Climate Variability and Predictability (CVP) program and the Modeling, Analysis, Predictions and Projections (MAPP) program has been accepted for publication in the Journal of Climate.

While the ENSO response is traditionally linked to a single deep baroclinic mode throughout the tropical Pacific, the paper by Ji et al., “El Niño–Southern Oscillation Sea Level Pressure Anomalies in the Western Pacific: Why Are They There?”, explores the contribution of both barotropic and baroclinic modes, as well as interactions between the two, to Sea Level Pressure (SLP).

The authors determined that the barotropic mode is the primary driver behind SLP anomalies in the western Pacific, while the baroclinic mode remains important throughout the central and eastern Pacific. Subsequent QTCM diagnostic experiments further elucidated the dynamical pathway linking these regions of the Pacific by selectively suppressing baroclinic-barotropic interactions in progressively larger bands.

These experiments showed that baroclinic-barotropic interactions are key to creating the barotropic signal that sustains the characteristic ENSO SLP anomalies observed in the western Pacific.

To access an early online release of the paper, visit: http://dx.doi.org/10.1175/JCLI-D-14-00716.1

Print

Name:
Email:
Subject:
Message:
x
Contact

Dr. Annarita Mariotti
MAPP Program Director
P: 301-734-1237
E: annarita.mariotti@noaa.gov

Dr. Daniel Barrie
MAPP Program Manager
P: 301-734-1256
E: daniel.barrie@noaa.gov

Alison Stevens*
MAPP Program Specialist
P: 301-734-1218
E: alison.stevens@noaa.gov

Emily Read*
MAPP Program Assistant
P: 301-734-1257
E: emily.read@noaa.gov

  • Subscribe to our newsletter!



«February 2018»
MonTueWedThuFriSatSun
2930311234
567891011
121314151718
19202122232425
2627281234
567891011

ABOUT OUR ORGANIZATION

Americans’ health, security and economic wellbeing are tied to climate and weather. Every day, we see communities grappling with environmental challenges due to unusual or extreme events related to climate and weather. In 2011, the United States experienced a record high number (14) of climate- and weather-related disasters where overall costs reached or exceeded $1 billion. Combined, these events claimed 670 lives, caused more than 6,000 injuries, and cost $55 billion in damages. Businesses, policy leaders, resource managers and citizens are increasingly asking for information to help them address such challenges.

CONTACT US

Climate Program Office
1315 East-West Hwy, Suite 1100
Silver Spring, MD 20910

CPO.webmaster@noaa.gov