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Mauna Kea

The James Clerk Maxwell Telescope (JCMT) and the Caltech Submillimetre Observatory (CSO) are situated close to the summit of Mauna Kea, Hawaii at an altitude of 4092 m. The telescopes have a diameter of 15 m and 10 m, respectively.

The following plot shows the transmission of the first decile (10 %, grey) and the three quartiles (25 % red, 50 % blue) of the pwv statistics between 2008 and 2010 extracted from the IASI satellite. 

This plot shows the transmission in percent for values of pwv=0.3mm (grey), 0.6mm (red), and 1mm (blue) against frequency/wavelength for a frequency range 0-2000 GHz. The frequency resolution is 200 MHz.

0-2000 GHz

Gzipped-ascii-files of data in two-column format. First column: Frequency in GHz, second column: Transmission (to get opacity take -ln(transmission)). The frequency resolution (df) is indicated for each model.
Frequency [GHz] 0-2000 (df=200 MHz) 0-10000 (df=200 MHz) 535-750 (df=50 MHz) 750-950 (df=50 MHz) 950-1110 (df=50 MHz)
pwv=0.3mm jcmt-0-2000-03
pwv=0.6mm jcmt-0-2000-06
pwv=1mm jcmt-0-2000-1