One of the most important thing in talking the weather
surrounded the Asia-Pacific is the El Nino. It is one of the cycling weather
interaction which can affect the climate in some countries. The El Nino is
cycled together with La Nina and both of them are famous with the name El Nino/
Southern Oscillation.
 |
| ENSO Schematic Credited by NOAA is downloaded from climatic.gov |
These interactions actually are occurred by interfering of
hot cycling temperature in cold temperature or the opposite. This phenomenon affects
the ocean temperatures and possibly alters the weather patterns around the
world. How it can be? It is because the ENSO produces temperature either warmer
or cooler than the ocean so it generating the differences of pressure system,
affecting the winds and moisture. Therefore, the water containing inside the
weather is less when it is warmer so it creates hotter area which is less of
raining. The same effect will be happening on the opposite situation.
The issue which is being talked today is in what occasion ENSO occurred? As we
knew that ENSO will be happening if there are air pressure differentiation in
the opposite directions of pacific oceans. If the cold air comes from western
part which brings the low air pressure and it meets the hot air which has high
air pressure in some parts in the pacific oceans, those air will fuse together.
Consequently, it can cause the fusion of moisture or drying. However, recent
study which is published on New Astronomy Journal conducted by *Qian Zhai of Yunnan
Observatories, Chinese Academy of Sciences, Kunming, China suggested that the
ENSO is influenced by the sunspot activity. The impact factor could be the
cause in atmospheric anomalies in the pacific.
According to the study, it is illustrated that the sun
activities have given positive influence on the existence of ENSO. It could be
happened in low activity of level because during that time the sun creates
minimum of sunspots or even more it does not create it at all for eleven years.
During the solar minima, the sun subsides fewer solar flares and it radiates
fewer of gas electrified onto the space. So, it means when some part of the
earth was experiencing the solar activity, there could be changing patterns of
weather in related area.
ENSO or El Niño and La Nina can affect weather in several
pattern of area. Some studies including this study has shown the influences.
The ENSO had been proven for influencing the changing of hydro climatic in the Rio
de la Plata. This prove is based on several studies conducted in 1992, 1994 and
1998 respectively by Mechoso and Perez-Iribarren, Pisciottano et al., Caviedes
and Waylen. The similar study which had been conducted by **Sathicq et al.,
investigated there was unstable condition on the population of phytoplankton in
Rio de la Plata estuary.
*Evidence for the effect of sunspot activity on the El Niño/Southern Oscillation
**Influence of El Niño Southern Oscillation phenomenon on coastal phytoplankton in a mixohaline ecosystem on the southeastern of South America: Río de la Plata estuary