Synoptic situations of severe local convective storms during the pre-monsoon season in Bangladesh
dc.contributor.author | Yamane, Yusuke | |
dc.contributor.author | Hayashi, Taiichi | |
dc.contributor.author | Kiguchi, Masashi | |
dc.contributor.author | Akter, Fatima | |
dc.contributor.author | Dewan, Ashraf | |
dc.date.accessioned | 2017-01-30T11:35:33Z | |
dc.date.available | 2017-01-30T11:35:33Z | |
dc.date.created | 2013-02-05T20:00:30Z | |
dc.date.issued | 2012 | |
dc.identifier.citation | Yamane, Yusuke and Hayashi, Taiichi and Kiguchi, Masashi and Akter, Fatima and Dewan, Ashraf Mahmmood. 2013. Synoptic situations of severe local convective storms during the pre-monsoon season in Bangladesh. International Journal of Climatology. 33 (3): pp. 725-734. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/13212 | |
dc.identifier.doi | 10.1002/joc.3460 | |
dc.description.abstract |
This study examines synoptic situations of severe local convective storms (mesoscale severe weather associated with deep convections such as tornado and hail) during the pre-monsoon season (from March to May) in Bangladesh. We compared composite meteorological fields on severe local convective storm days (SLCSD) with those on non-severe local convective storm days (NSLCSD). Moisture inflow from the Bay of Bengal is enhanced with intensification of southwesterly wind at 950 hPa on SLCSD compared with NSLCSD. The temperature is higher at 800 hPa over the inland area of the Indian subcontinent including Bangladesh on SLCSD than NSLCSD. At 550 hPa, a trough over Bangladesh develops on SLCSD compared with NSLCSD. This leads to the development of a thermal trough over the inland area of the Indian subcontinent and enhancement of cold advection from the northwest into Bangladesh on SLCSD at this level. This synoptic situation produces great potential instability of the atmosphere in Bangladesh on SLCSD during the pre-monsoon season. Composite distributions of lifted index, precipitable water and convective available potential energy on SLCSD and NSLCSD over south Asia show distinct differences of these parameters between these two categories with statistical significance especially in and around Bangladesh. These differences indicate that the atmospheric environment has great potential instability especially in and around Bangladesh on SCLSD under the synoptic situations shown in this study. | |
dc.publisher | John Wiley & Sons Ltd. | |
dc.subject | pre-monsoon | |
dc.subject | synoptic situation | |
dc.subject | Bangladesh | |
dc.subject | severe local convective storm | |
dc.title | Synoptic situations of severe local convective storms during the pre-monsoon season in Bangladesh | |
dc.type | Journal Article | |
dcterms.source.volume | - | |
dcterms.source.issn | 0899-8418 | |
dcterms.source.title | International Journal of Climatology | |
curtin.department | ||
curtin.accessStatus | Open access via publisher |