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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 16, issue 7
Ann. Geophys., 16, 853–865, 1998
https://doi.org/10.1007/s00585-998-0853-8
© European Geosciences Union 1998
Ann. Geophys., 16, 853–865, 1998
https://doi.org/10.1007/s00585-998-0853-8
© European Geosciences Union 1998

  31 Jul 1998

31 Jul 1998

Parametrization of the precipitation in the Northern Hemisphere and its verification in Mexico

V. M. Mendoza, B. Oda, and J. Adem V. M. Mendoza et al.
  • Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México, 04510, México D. F., México

Abstract. To improve results in monthly rainfall prediction, a parametrization of precipitation has been developed. The thermodynamic energy equation used in the Adem thermodynamic model (ATM) and the Clausius and Clapeyron equation, were used to obtain a linear parametrization of the precipitation anomalies as a function of the surface temperature and the 700 mb temperature anomalies. The observed rainfall in Mexico over 36 months, from January 1981 to December 1983, was compared with the results obtained of the heat released by condensation, which is proportional to precipitation, using our theoretical formula, and those obtained using a statistical formula, which was derived for the ATM using 12 years of hemispheric real data. The verification using our formula in Mexico, showed better results than the one using the statistical formula.

Key words. Meteorology and atmospheric dynamics (climatology; convective processes; general circulation).

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