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Astroclimatology of Paranal

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Wind 10m above Ground Level: Annual Statistics     Histogram (85-99)     Windroses ( 1997-1999   1993-1996   1985-1990 )
Wind at 200mB/12km Altitude:   Monthly Statistics     1987-1999 Plot


Wind at Paranal: Annual Statistics


Nighttime (0-10hUT) 20mn Wind Velocity Bins at 10m above ground (30m from 1998 onwards)
Year \ wind % above 15m/sAverage MaximumRMS
2004 36.124.23.9
2003 25.919.73.6
2002 46.821.84.0
2001 36.523.53.9
2000 46.524.34.2
1999 56.622.74.1
1998 57.423.74.2
1997 67.124.64.3
1996 57.026.84.3
1995 46.725.14.1
1994 56.224.44.2
1993 76.822.34.4
1992 * summit flattened *
1991 * 29m removed *
1990 97.926.14.8
1989 87.829.84.8
1988 98.026.44.9
1987108.032.25.0
1986 67.223.34.3
1985 57.124.84.2

Monthly averages (ascii file), 1998-2000


Wind at Paranal: Nighttime Velocity Histogram (1985-1999)


wind velocity at 10m above ground (30m from 1998 onwards)

Percentage of the total time (respectively of useful time) when the wind was between 12 and 15m/s (telescope not allowed to point towards North): 6.6% (7.5%) in the period 2000-2002, and 7.8% (8.2%) in the period 1997-1999.

Wind at Paranal: Nighttime Windrose (97-99)


wind direction at 10m above ground
The sectors are in steps of 11.25 degrre, the length of the sector represents the fraction of time when the wind comes from this direction (
postcript figure)


Wind at Paranal: Nighttime Windrose (93-96)


wind direction at 10m above ground
The sectors are in steps of 11.25 degrre, the length of the sector represents the fraction of time when the wind comes from this direction (
postcript figure)


Wind at Paranal: Nighttime Windrose (85-90)


wind direction at 10m above ground
The sectors are in steps of 11.25 degrre, the length of the sector represents the fraction of time when the wind comes from this direction (
postcript figure)


Wind above Paranal: Monthly Statistics of 200mB/12km Velocity (1987-1999)


Antofagasta Daily (12UT) Radiosoundings


Wind above Paranal: 200mB/12km Velocity and Scintillation (1987-1999)


Antofagasta Daily (12UT) Radiosoundings and ESO Scintillometers



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