HomeHome

The Antarctic Atmospheric Energy Budget. Part I: Climatology and Intraseasonal-to-Interannual Variability

Michael Previdi; Karen L. Smith; Lorenzo M. Polvani

Title:
The Antarctic Atmospheric Energy Budget. Part I: Climatology and Intraseasonal-to-Interannual Variability
Author(s):
Previdi, Michael
Smith, Karen L.
Polvani, Lorenzo M.
Date:
Type:
Articles
Department(s):
Lamont-Doherty Earth Observatory
Ocean and Climate Physics
Applied Physics and Applied Mathematics
Earth and Environmental Sciences
Volume:
26
Persistent URL:
Book/Journal Title:
Journal of Climate
Abstract:
The authors present a new, observationally based estimate of the atmospheric energy budget for the Antarctic polar cap (the region poleward of 70°S). This energy budget is constructed using state-of-the-art reanalysis products from ECMWF [the ECMWF Interim Re-Analysis (ERA-Interim)] and Clouds and the Earth's Radiant Energy System (CERES) top-of-atmosphere (TOA) radiative fluxes for the period 2001–10. The climatological mean Antarctic energy budget is characterized by an approximate balance between the TOA net outgoing radiation and the horizontal convergence of atmospheric energy transport, with the net surface energy flux and atmospheric energy storage generally being small in comparison. Variability in the energy budget on intraseasonal-to-interannual time scales bears a strong signature of the southern annular mode (SAM), with El Niño–Southern Oscillation (ENSO) having a smaller impact. The energy budget framework is shown to be a useful alternative to the SAM for interpreting surface climate variability in the Antarctic region.
Subject(s):
Atmosphere
Meteorology
Mathematics
Publisher DOI:
https://doi.org/10.1175/JCLI-D-12-00640.1
Item views
113
Metadata:
text | xml
Suggested Citation:
Michael Previdi, Karen L. Smith, Lorenzo M. Polvani, , The Antarctic Atmospheric Energy Budget. Part I: Climatology and Intraseasonal-to-Interannual Variability, Columbia University Academic Commons, .

Columbia University Libraries | Policies | FAQ