Research Article
Investigation of Vorticity during Prevalent Winter Precipitation in Iran
Table 1
Some of the characteristics of identified patterns of prevalent winter precipitation in Iran.
| 1000 hPa vorticity patterns | Prevalence percentage | Overall precipitation | Frequency |
| Mediterranean low pressure-low-pressure dual-core Persian Gulf | 50.132 | 3603 | 77 | Iran closed low pressure-high pressure of east Europe | 81.035 | 5824 | 73 | Low pressure of Ural-high pressure of the Middle East | 56.992 | 4096 | 60 | European high pressure-low pressure of Saudi Arabia | 58.314 | 4191 | 52 | High-pressure belt of Siberia-low pressure of central Iran | 55.322 | 3976 | 93 |
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