ACAM
The cryosphere today
Climate Prediction Center 
Activitat solar 
Evoluciˇ del cicle solar
M. Washington Observatory
NCDC Climate Monitoring
Jet Propulsion Laboratory
NCAR, NSIDC
Extensiˇ de la neu a l'HN
PÓgina de l'└rtic de la NOAA
Co2Science
NOAA
GAMA
Webcams del Alps