Bibcode
García-Lorenzo, B.; Eff-Darwich, A.; Castro-Almazán, J.; Pinilla-Alonso, N.; Muñoz-Tuñón, C.; Rodríguez-Espinosa, J. M.
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society, Volume 405, Issue 4, pp. 2683-2696.
Advertised on:
7
2010
Número de citas
22
Número de citas referidas
17
Descripción
We present measurements of the atmospheric water vapour content above
the Roque de los Muchachos Observatory (ORM) obtained using the Global
Positioning System (GPS). The GPS measurements have been evaluated by
comparison with 940-nm radiometer observations. A statistical analysis
of the GPS measurements points to the ORM as an observing site with
suitable conditions for infrared observations, with a median column of
precipitable water vapour (PWV) of 3.8 mm. PWV presents a clear seasonal
behaviour, with winter and spring being the best seasons for infrared
observations. The percentage of nights showing PWV values less than 3 mm
is over 60 per cent in February, March and April. We have also estimated
the temporal variability of water vapour content at the ORM. We present
a summary of PWV statistical results at different astronomical sites,
noting that these values are not directly comparable as a result of the
differences in the techniques used to recorded the data.
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