Question:

Someone saw a "climate jump" in CDAS 925-hPa temperatures in the vicinity of the Andes 
(near the Argentina/Chile border between 15S and 40S).  The May-September temperatures 
are "low" since since 1999.

  We had to switch to the USAF snow cover analyses in the fall of 98 because the snow
analyses being produced by the Joint Ice Center was discontinued.  The USAF snow analyses
is a better analyses and is used by the operational models.  However, "jumps" were noted
in the Alps and in South America snow cover.   The Southern Hemisphere was more notable
because CDAS had used a climatological snow cover for the SH.

If you look at "snow.png", you will see that some parts of the Andes now have snow
cover where previously they didn't.  

See andes.slp