Prediction of lightning flash density with the WRF model
The Lightning Potential Index (LPI) is a measure of the potential for charge generation and separation that leads to lightning flashes in convective thunderstorms. It is calculated from model simulated updraft and microphysical fields. It was designed to predict the potential of lightning occurrence...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2010-02-01
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| Series: | Advances in Geosciences |
| Online Access: | http://www.adv-geosci.net/23/11/2010/adgeo-23-11-2010.pdf |
| _version_ | 1818248093247733760 |
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| author | B. Lynn Y. Yair |
| author_facet | B. Lynn Y. Yair |
| author_sort | B. Lynn |
| collection | DOAJ |
| description | The Lightning Potential Index (LPI) is a measure of the potential for charge
generation and separation that leads to lightning flashes in convective
thunderstorms. It is calculated from model simulated updraft and
microphysical fields. It was designed to predict the potential of lightning
occurrence in operational weather forecasting models, but could possibly be
used to improve short-range forecasts of heavy rain. The index is modified
here to be model grid-scale transparent between 1 and 4 km (the approximate
upper limit of explicit microphysical weather forecasts). Two case studies
show that the modification appears to work quite well, and that LPI can be
calculated on both an extremely high resolution research-grid (i.e., 1.33 km)
and high resolution (i.e., 4 km) operationally compatible forecast grid.
Analytical expressions are presented to use the LPI to predict the hourly
lightning flash density. |
| first_indexed | 2024-12-12T15:15:07Z |
| format | Article |
| id | doaj.art-078a945ddbfc49db88d8e4ee9d54de53 |
| institution | Directory Open Access Journal |
| issn | 1680-7340 1680-7359 |
| language | English |
| last_indexed | 2024-12-12T15:15:07Z |
| publishDate | 2010-02-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Advances in Geosciences |
| spelling | doaj.art-078a945ddbfc49db88d8e4ee9d54de532022-12-22T00:20:31ZengCopernicus PublicationsAdvances in Geosciences1680-73401680-73592010-02-0123111610.5194/adgeo-23-11-2010Prediction of lightning flash density with the WRF modelB. Lynn0Y. Yair1The Hebrew University of Jerusalem, Jerusalem, IsraelThe Open University of Israel, Ra'anana, IsraelThe Lightning Potential Index (LPI) is a measure of the potential for charge generation and separation that leads to lightning flashes in convective thunderstorms. It is calculated from model simulated updraft and microphysical fields. It was designed to predict the potential of lightning occurrence in operational weather forecasting models, but could possibly be used to improve short-range forecasts of heavy rain. The index is modified here to be model grid-scale transparent between 1 and 4 km (the approximate upper limit of explicit microphysical weather forecasts). Two case studies show that the modification appears to work quite well, and that LPI can be calculated on both an extremely high resolution research-grid (i.e., 1.33 km) and high resolution (i.e., 4 km) operationally compatible forecast grid. Analytical expressions are presented to use the LPI to predict the hourly lightning flash density.http://www.adv-geosci.net/23/11/2010/adgeo-23-11-2010.pdf |
| spellingShingle | B. Lynn Y. Yair Prediction of lightning flash density with the WRF model Advances in Geosciences |
| title | Prediction of lightning flash density with the WRF model |
| title_full | Prediction of lightning flash density with the WRF model |
| title_fullStr | Prediction of lightning flash density with the WRF model |
| title_full_unstemmed | Prediction of lightning flash density with the WRF model |
| title_short | Prediction of lightning flash density with the WRF model |
| title_sort | prediction of lightning flash density with the wrf model |
| url | http://www.adv-geosci.net/23/11/2010/adgeo-23-11-2010.pdf |
| work_keys_str_mv | AT blynn predictionoflightningflashdensitywiththewrfmodel AT yyair predictionoflightningflashdensitywiththewrfmodel |