Authors

Vo Van Hoa 1* , Vu Anh Tuan 2 , Du Duc Tien 2 , Mai Khanh Hung 2 , Luong Thi Thanh Huyen 2 , Luu Khanh Huyen 2

Affiliations

1 Red-river Delta Regional Hydro-Meteorological Center

2 National Center for Hydro-Meteorological Forecasting

*Corresponding author: vovanhoa80@yahoo.com

Abstracts

Under the condition of climate change, the abnormal extreme weather phenomena has been increasing in both of  frequency and intensity, especially the abnormal heat waves in the winter. The paper shows  the results of thermodynamic analysis that caused two abnormal heat waves in the winter in northern areas of Viet Nam (one case occurred in the early winter, the other occurred at the end of winter). Based on the largescale synoptic pattern analysis, we found that the key reason that caused abnormal heat waves in the winter in northern areas of Viet Nam is due to the unusual activities of western hot low pressure and western Pacific subtropical high pressure in combination with “foehn” effect caused by Hoang Lien Son high rock mountain . In some cases, the combination between strong cold surge that descending from the south China and western hot low pressure also caused an abnormal heat wave in the winter.

Keywords

Abnormal heat wave , western hot low pressure , foehn effect

Cite this paper

Vo Van Hoa, Vu Anh Tuan, Du Duc Tien, Mai Khanh Hung, Luong Thi Thanh Huyen, Luu Khanh Huyen (2018), Study on a Case study of Abnormal Heat Waves in the Winter in the Northern Areas of Viet Nam in 2010 and 2015. Vietnam Journal of Hydrometeorology, 01, 43-53.

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