Se dispone de una base de datos de acceso
rapido que comprende la siguiente grilla:

180 a 20 W y de 0 a 70 S, con las variables

1000 y 500 hPa altura geopotencial
850 hPa temperatura

Se lista la informacion adicional del paquete de datos:
 

Fields for the ERA period 1979 through 1993. The following daily fields are
included:

Instantaneous fields valid at 12UTC

   * Geopotential on levels 1000 and 500 hPa (z), 8 bit,
   * Temperature on 850 and 200 hPa (t), 8 bit,
   * U- and V-Windcomponents on 850 and 200 hPa (u,v), 8 bit,
   * U10- and V10-Windcomponents at 10 meter height (u10,v10), 12 bit,
   * total cloud cover (tcc), 12 bit,
   * two meter temperature (t2), 12 bit,
   * two meter dew point temperature (d2), 12 bit,

Fields of quantities accumulated over 24 hour periods centred on 12UTC

   * evaporation (e), 12 bit,
   * total precipitation (large scale plus convective)(tp), 12 bit,

All of the fields have been converted to a uniform 2.5 degree resolution
latitude-longitude grid (144 by 73 grid points), oriented from the North
Pole (j=1) to the South Pole (j=73), and from 0 E(i=1) eastward to 2.5 W
(i=144).

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Tambien hay una copia de los datos en biblioteca en CD para quien
prefiera manejarlos por su cuenta.
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