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   Climate Indices

  Monthly Northern Hemisphere Annular Mode (NAM) Index  or Arctic Oscillation (AO) Index 1873-2010

  Daily Northern Hemisphere Annular Mode (NAM) Index  or Arctic Oscillation (AO) Index 1948-2010

  Monthly Southern Hemisphere Annular Mode (SAM) Index or Antarctic Oscillation (AAO) Index 1948-2010

  Daily Southern Hemisphere Annular Mode (SAM) Index or Antarctic Oscillation (AAO) Index 1948-2010

  North Atlantic Oscillation (NAO) Index 1873-2010
   

   Summer Monsoon Indices  

  South Asian Summer Monsoon Index (SASMI) 1948-2009

  East Asian Summer Monsoon Index (EASMI) 1948-2009

  South China Sea Summer Monsoon Index (SCSSMI) 1948-2009

  West African Summer Monsoon Index (WASMI) 1948-2009

  North American Summer Monsoon Index (NASMI) 1948-2009

  South American Summer Monsoon Index (SAMSMI) 1948-2009

  Australian Summer Monsoon Index (AUSMI) 1948-2009
   

   Monsoon-like Southwest Australian Circulation Index  

  Southwest Australian Circulation Index (SWACI) 1948-2009
   

   Topographic Data

  NCAR/NCEP topographic GRID data on a 2.5ºX2.5º mesh topo25x25.ctl  topo25x25.grd
  Global surface height data on an 1ºX1º mesh topo1x1.ctl  topo1x1.dat
  Global surface height data on an 40'X40' mesh etopo40 (sdfopen etopo40.cdf)
  Global surface height data on an 20'X20' mesh etopo20-0-360 (sdfopen etopo20-0-360.nc)
  Global surface height data on an 20'X20' mesh etopo20  (sdfopen etopo20.cdf)

   Related Subroutines

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Last updated: 2010-08-24   (Jianping Li: ljp@lasg.iap.ac.cn)