Posts Tagged ‘El Nino’
Abnormal weather in global warming
“Global warming” phenomenon causes various, abnormal weathers.
First of all, let’s think about a long-term tendency to precipitation.
Precipitation increases from 0.5 to 1% in most land hit from middle latitude of the northern hemisphere to the high latitude in the past ten years.
Similarly, the precipitation of the subtropical area in the northern hemisphere decreases oppositely by 0.3% every ten years.
Frequency where the heavy rain is generated increases from 2 to as much as 4% in the region hit from middle latitude of the northern hemisphere to the high latitude when becoming the latter half of the 20th century.
It is forecast that steam and precipitation that there will be an influence in “Global warming” in the region in the entire earth in the future are in the increasing tendency.
After 1970, the incidence is still high and El Nino effect that brings the drought and the downpour shows the tendency to which the phenomenon is prolonged compared with 100 years in the past when it is generated by one degree though it is not an especially new weather situation.
As for El Nino effect in recent years, rising width of the seawater temperature is higher though the temperature of seawater indicates the weather situation in which a situation that is 0.5℃ or more higher continues compared with the average year by El Nino effect in tropical eastern Pacific.
Big, abnormal weather is not very generated in this La Nina though it is called La Nina that the seawater temperature is 0.5℃ or more low contrary to El Nino effect.
In the forecast in recent years, it is assumed that the temperature rises in the 21st century, and the abnormal weather phenomenon of an increase of the maximum force of the wind of a water shortage of summer in the region that undertakes a big heavy rain in the range and the region, increases in the downpour, and inside latitude, a large-scale typhoon, and the tropical depression and precipitation etc. is generated.
