tailieunhanh - Impact of ENSO on extreme temperatures in Vietnam

This paper presents the results of research on the effects of ENSO to extreme temperature in Vietnam [1] through the frequency deviation of the occurrence extreme temperatures during ENSO and non-ENSO seasons. The results demonstrate that in an El Niño winter, the frequency of absolute maximum temperature decreased over mountainous areas of the temperature in comparison to those under the influence of a non-ENSO winter. In summer, the effects of El Niño and La Nina generally led to a reduction in the frequency of maximum temperatures in comparison to the non-ENSO condition. For minimum temperatures, the effect of El Niño winter led to a decrease in the appearance of the temperatures, while the effect of La Nina led to an increase in the appearance of this characteristic. In contrast, the effects of El Niño and La Nina led to a reduction in the frequency of minimum temperatures during summer. Generally, in both El Niño and La Nina conditions, significant changes were observed in the distribution of frequency deviation with regard to both patterns and values of seasons, in which the South obviously exhibited more changes than the North. | ENVIRONMENTAL SCIENCES CLIMATOLOGY Impact of ENSO on extreme temperatures in Vietnam Duc Ngu Nguyen Centre for Hydro-Meteorological and Environmental Sciences and Technologies Received 25 May 2017 accepted 30 October 2017 Abstract This paper presents the results of research on the effects of ENSO to extreme temperature in Vietnam 1 through the frequency deviation of the occurrence extreme temperatures during ENSO and non-ENSO seasons. The results demonstrate that in an El Nino winter the frequency of absolute maximum temperature decreased over mountainous areas of the temperature in comparison to those under the influence of a non-ENSO winter. In summer the effects of El Nino and La Nina generally led to a reduction in the frequency of maximum temperatures in comparison to the non-ENSO condition. For minimum temperatures the effect of El Nino winter led to a decrease in the appearance of the temperatures while the effect of La Nina led to an increase in the appearance of this characteristic. In contrast the effects of El Nino and La Nina led to a reduction in the frequency of minimum temperatures during summer. Generally in both El Nino and La Nina conditions significant changes were observed in the distribution of frequency deviation with regard to both patterns and values of seasons in which the South obviously exhibited more changes than the North. Keywords effects of ENSO extremes temperature winter. Classification number Introduction Research on weather and climate extremes is of particular importance for both scientific and practical purposes. Most climate extremes occur under conditions of abnormal variability in terms of atmospheric circulation or solar radiation. In the context of global climate change some of the weather and climate extreme events are likely Email nguyenducngu@. to occur more frequently in the 21st century 2 . In fact the variation in extreme weather and climate has been exhibited in many places further even the moderating .

• Môi trường
• Effects of ENSO
• Extremes temperature
• Impact of ENSO
• Extreme temperatures in Vietnam
• Significant changes were observed
• Effects of ENSO on the intraseasonal oscillations
• The intraseasonal oscillations
• Sea surface temperature
• Speed along Vietnam’s coastal areas
• Wind speed in ENSO winter years
• Tropical cyclones
• Cold air activities
• Tropical cyclones in Vietnam
• The typhoon season