Open AccessRelationship of lightning flashes frequency with statistical characteristics of convective activity in the atmopshere
Author(s) -
А. В. Елисеев,
А. В. Елисеев,
A. N. Ploskov,
A. N. Ploskov,
А. V. Chernokulsky,
А. В. Чернокульский,
И. И. Мохов,
И. И. Мохов
Publication year - 2019
Publication title -
doklady akademii nauk. rossijskaâ akademiâ nauk
Language(s) - English
Resource type - Journals
ISSN - 0869-5652
DOI - 10.31857/s0869-5652485176-82
Subject(s) - lightning (connector) , exponent , flash (photography) , convection , satellite , meteorology , computational physics , environmental science , atmospheric sciences , physics , power (physics) , optics , thermodynamics , linguistics , philosophy , astronomy
A modification of the commonly used Price-Rind scheme for lightning flashes frequency (LFF), which can be used for calculations with large spatial and time steps, is developed. With such steps, the exponent in the relationship of LFF on convective cloud heights appears to be smaller by a factor of two over land and by one fourth over ocean in comparison to that in the original Price-Rind scheme. The modified version is implemented into the IAP RAS climate model (CM). The results of the lightning flash frequency simulations with the modified scheme agree better with the satellite data than those with the original one. In the IAP RAS CM, global warming (cooling) leads to LFF increase (decrease) in all seasons. The sensitivity of lightning flashes frequency to the surface air temperature change at the global level is estimated equal to 10%/K.