Search Results

You are looking at 1 - 3 of 3 items for :

  • Arctic Oscillation x
  • Journal of Climate x
  • Modern Era Retrospective-Analysis for Research and Applications (MERRA) x
  • Refine by Access: All Content x
Clear All
Michele M. Rienecker, Max J. Suarez, Ronald Gelaro, Ricardo Todling, Julio Bacmeister, Emily Liu, Michael G. Bosilovich, Siegfried D. Schubert, Lawrence Takacs, Gi-Kong Kim, Stephen Bloom, Junye Chen, Douglas Collins, Austin Conaty, Arlindo da Silva, Wei Gu, Joanna Joiner, Randal D. Koster, Robert Lucchesi, Andrea Molod, Tommy Owens, Steven Pawson, Philip Pegion, Christopher R. Redder, Rolf Reichle, Franklin R. Robertson, Albert G. Ruddick, Meta Sienkiewicz, and Jack Woollen

(thick curve) and RMS (thin curve) of O-F residuals (hPa, left axis) for surface pressure observations in the (top) Northern and (bottom) Southern Hemispheres. The shaded curves indicate the monthly mean data counts (right axis) for each 6-h assimilation cycle. The mean O-F and O-A statistics for January 2004 radiosonde temperature observations at different pressure levels are shown for the globe and for the Arctic (north of 70°N) in Fig. 11 . The global analysis biases are relatively small (less

Full access
Franklin R. Robertson, Michael G. Bosilovich, Junye Chen, and Timothy L. Miller

Modeling and Assimilation Office, 96 pp. [Available online at .] Thompson , D. W. J. , and J. M. Wallace , 1998 : The Arctic Oscillation signature in the wintertime geopotential height and temperature fields . Geophys. Res. Lett. , 25 , 1297 – 1300 . Thompson , D. W. J. , and J. M. Wallace , 2000 : Annular modes in the extratropical circulation. Part I: Month-to-month variability . J. Climate , 13 , 1000

Full access
David H. Bromwich, Julien P. Nicolas, and Andrew J. Monaghan

in high southern latitudes . Rev. Geophys. , 26 , 149 – 168 . Bromwich , D. H. , and R. L. Fogt , 2004 : Strong trends in the skill of the ERA-40 and NCEP–NCAR reanalyses in the high and middle latitudes of the Southern Hemisphere, 1958–2001 . J. Climate , 17 , 4603 – 4619 . Bromwich , D. H. , and S.-H. Wang , 2008 : A review of the temporal and spatial variability of Arctic and Antarctic atmospheric circulations based upon ERA-40 . Dyn. Atmos. Oceans , 44 , 213 – 243

Full access