Comments on “Does Air Pollution Really Suppress Precipitation in Israel?”

Amir Givati Israeli Hydrological Service, Jerusalem, Israel

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Daniel Rosenfeld The Hebrew University of Jerusalem, Jerusalem, Israel

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Abstract

Alpert et al. in a recent paper challenged the quantification of the suppression of orographic precipitation that was shown in two recent papers by Givati and Rosenfeld to occur in Israel. Their main claim was that the results were determined by the selection of the rain gauges. In this comment, it is demonstrated that when an objective selection of the rain gauges is applied to all of the rain gauges that were used by Alpert et al. and Givati and Rosenfeld, the outcome replicates the results of Givati and Rosenfeld and provides additional insights. At the final account, this comment further enhances the confidence that orographic precipitation has been suppressed over Israel. The direct evidence to the cause is still lacking.

Corresponding author address: Daniel Rosenfeld, Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel. Email: daniel.rosenfeld@huji.ac.il

Abstract

Alpert et al. in a recent paper challenged the quantification of the suppression of orographic precipitation that was shown in two recent papers by Givati and Rosenfeld to occur in Israel. Their main claim was that the results were determined by the selection of the rain gauges. In this comment, it is demonstrated that when an objective selection of the rain gauges is applied to all of the rain gauges that were used by Alpert et al. and Givati and Rosenfeld, the outcome replicates the results of Givati and Rosenfeld and provides additional insights. At the final account, this comment further enhances the confidence that orographic precipitation has been suppressed over Israel. The direct evidence to the cause is still lacking.

Corresponding author address: Daniel Rosenfeld, Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel. Email: daniel.rosenfeld@huji.ac.il

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  • Alpert, P., N. Halfon, and Z. Levin, 2008: Does air pollution really suppress precipitation in Israel? J. Appl. Meteor. Climatol., 47 , 933943.

    • Search Google Scholar
    • Export Citation
  • Givati, A., and D. Rosenfeld, 2004: Quantifying precipitation suppression due to air pollution. J. Appl. Meteor., 43 , 10381056.

  • Givati, A., and D. Rosenfeld, 2005: Separation between cloud-seeding and air-pollution effects. J. Appl. Meteor., 44 , 12981315.

  • Khain, A. P., A. Pokrovsky, and I. Sednev, 1999: Effects of cloud-aerosol interaction on cloud microphysics, precipitation formation and size distribution of atmospheric aerosol particles: Numerical experiments with a spectral microphysics cloud model. Atmos. Res., 52 , 195220.

    • Search Google Scholar
    • Export Citation
  • Phillips, V. T. J., T. W. Choularton, and A. M. Blyth, 2002: The influence of aerosol concentrations on the glaciation and precipitation of a cumulus cloud. Quart. J. Roy. Meteor. Soc., 128 , 951971.

    • Search Google Scholar
    • Export Citation
  • Rosenfeld, D., 1986: The dynamic characteristics of cumuliform clouds and cloud systems and their effect on the rainfall precipitated by them. Ph.D. thesis, The Hebrew University of Jerusalem, 142 pp.

  • Sharon, D., and H. Kutiel, 1986: The distribution of rainfall intensity in Israel, its regional and seasonal variations and its climatological evaluation. Int. J. Climatol., 6 , 277291.

    • Search Google Scholar
    • Export Citation
  • Shay-El, Y., and P. Alpert, 1991: A diagnostic study of winter diabatic heating in the Mediterranean in relation to cyclones. Quart. J. Roy. Meteor. Soc., 117 , 715747.

    • Search Google Scholar
    • Export Citation
  • Teller, A., and Z. Levin, 2006: The effects of aerosols on precipitation and dimensions of subtropical clouds; a sensitivity study using a numerical cloud model. Atmos. Chem. Phys., 6 , 6780.

    • Search Google Scholar
    • Export Citation
  • Yair, Y., and Z. Levin, 1994: Lightning disintegration in clouds and into the ground in thunderstorms in Israel. Meteor. Isr., 3 , 2028.

    • Search Google Scholar
    • Export Citation
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