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Analysis of the Effect of the St. Petersburg Megalopolis on Precipitation and Wind for Validation of Numerical Weather Forecasts

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Abstract

Data on diurnal precipitation totals were retrieved by the gradient boosting method, as well as surface wind characteristics for St. Petersburg and 15 stations in Leningrad region for the period of 1994–2018. The following effects of the St. Petersburg megalopolis on the fields of the studied meteorological elements are identified: an increase in the amount of precipitation and a decrease in surface wind speed outside the megalopolis on the leeward-side territories and a decrease in surface wind speed in the megalopolis itself (city). The criteria for their detection on a specific day (time) are developed; and the quantitative estimates of the average values of these effects are calculated.

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Authors and Affiliations

  1. Hydrometcenter of the Russian Federation, 123242, Moscow, Russia

    E. M. Ladokhina & K. G. Rubinshtein

  2. Northwest Administration on Hydrometeorology and Environmental Monitoring, 199026, St. Petersburg, Russia

    E. M. Ladokhina

  3. Institute for Safety Problems of Nuclear Power Plants, Russian Academy of Sciences, 115191, Moscow, Russia

    K. G. Rubinshtein

Authors
  1. E. M. Ladokhina
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  2. K. G. Rubinshtein
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Correspondence to E. M. Ladokhina or K. G. Rubinshtein.

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Translated by O. Bazhenov

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Ladokhina, E.M., Rubinshtein, K.G. Analysis of the Effect of the St. Petersburg Megalopolis on Precipitation and Wind for Validation of Numerical Weather Forecasts. Atmos Ocean Opt 34, 239–249 (2021). https://doi.org/10.1134/S102485602103009X

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  • DOI: https://doi.org/10.1134/S102485602103009X

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