Measurements of low amounts of precipitable water vapor by millimeter wave spectroscopy: An intercomparison with radiosonde, Raman lidar, and Fourier transform infrared data (Articolo in rivista)

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  • Measurements of low amounts of precipitable water vapor by millimeter wave spectroscopy: An intercomparison with radiosonde, Raman lidar, and Fourier transform infrared data (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1029/2008JD009831 (literal)
Alternative label
  • Fiorucci I; Muscari G; Bianchi C; Di Girolamo P; Esposito F; Grieco G; Summa D; Bianchini G; Palchetti L; Cacciani M; Di Iorio T; Pavese G; Cimini D; de Zafra L (2008)
    Measurements of low amounts of precipitable water vapor by millimeter wave spectroscopy: An intercomparison with radiosonde, Raman lidar, and Fourier transform infrared data
    in Journal of geophysical research
    (literal)
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  • Fiorucci I; Muscari G; Bianchi C; Di Girolamo P; Esposito F; Grieco G; Summa D; Bianchini G; Palchetti L; Cacciani M; Di Iorio T; Pavese G; Cimini D; de Zafra L (literal)
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  • D14314 (literal)
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  • 113 (literal)
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  • 12 (literal)
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  • D14 (literal)
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  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
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  • I. Fiorucci, G. Muscari, C. Bianchi, Ist Nazl Geofis & Vulcanol, I-00143 Rome, Italy G. Bianchini, L. Palchetti, Ist Fis Applicata Nello Carrara, CNR, I-50127 Florence, Italy M. Cacciani, T. Di Iorio, Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy D. Cimini, Univ Laquila, CETEMPS, Dipartimento Fis, I-67010 Laquila, Italy RL. de Zafra, SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA P. Di Girolamo, F. Esposito, G. Grieco, D. Summa, Univ Basilicata, Dipartimento Ingn & Fis Ambiente, I-85100 Potenza, Italy G. Pavese, Ist Metodol Analisi Ambientale, CNR, I-85050 Potenza, Italy (literal)
Titolo
  • Measurements of low amounts of precipitable water vapor by millimeter wave spectroscopy: An intercomparison with radiosonde, Raman lidar, and Fourier transform infrared data (literal)
Abstract
  • Observations of very low amounts of precipitable water vapor ( PWV) by means of the Ground- Based Millimeter wave Spectrometer ( GBMS) are discussed. Low amounts of column water vapor ( between 0.5 and 4 mm) are typical of high mountain sites and polar regions, especially during winter, and are difficult to measure accurately because of the lack of sensitivity of conventional instruments to such low PWV contents. The technique used involves the measurement of atmospheric opacity in the range between 230 and 280 GHz with a spectral resolution of 4 GHz, followed by the conversion to precipitable water vapor using a linear relationship. We present the intercomparison of this data set with simultaneous PWV observations obtained with Vaisala RS92k radiosondes, a Raman lidar, and an IR Fourier transform spectrometer. These sets of measurements were carried out during the primary field campaign of the Earth Cooling by Water vapor Radiation ( ECOWAR) project which took place at Breuil- Cervinia ( 45.9 degrees N, 7.6 degrees E, elevation 1990 m) and Plateau Rosa ( 45.9 degrees N, 7.7 degrees E, elevation 3490 m), Italy, from 3 to 16 March 2007. GBMS PWV measurements show a good agreement with the other three data sets exhibiting a mean difference between observations of similar or equal to 9%. The considerable number of data points available for the GBMS versus lidar PWV correlation allows an additional analysis which indicates negligible systematic differences between the two data sets. (literal)
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