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Recent improvements on atmospheric CO2 measurements at Mt. Cimone observatory, Italy

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Il Nuovo Cimento C

Summary

Continuous atmospheric CO2 measurements have been carried out at Mt. Cimone from 1979 up to the present. Omitting here a measurement presentation, in this paper we show the current experimental procedures adopted and NDIR apparatus performances. Quality measurements have been recently improved by introducing an ULTRAMAT-5E (SIEMENS) NDIR analyzer controlled, for operating mode, by computer: the routine precision attained is ±0.1 p.p.m. An interesting performance of the analyzer is its nondetectable sensitivity to water vapour infrared absorption, enabling us also to determine CO2 measurements in wet air. A flask sampling technique and an investigation of the flask deterioration risk, against storing time, are presented. Results of the investigation validate the use of electropolished stainless-steel flasks for high-quality measurements.

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Authors and Affiliations

  1. Italian Meteorological Service, Mt. Cimone

    V. Cundari, T. Colombo, G. Papini & G. Benedicti

  2. IFA-CNR, Rome, Italy

    L. Ciattaglia

Authors
  1. V. Cundari
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  2. T. Colombo
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  3. G. Papini
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  4. G. Benedicti
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  5. L. Ciattaglia
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Cundari, V., Colombo, T., Papini, G. et al. Recent improvements on atmospheric CO2 measurements at Mt. Cimone observatory, Italy. Il Nuovo Cimento C 13, 871–882 (1990). https://doi.org/10.1007/BF02512003

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  • DOI: https://doi.org/10.1007/BF02512003

PACS 92.60

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