Post by LSDeep on Mar 3, 2006 20:49:14 GMT -5
38 minutes ago
GENEVA - Cool sea surface temperatures in the central and eastern Pacific point to a La Nina phenomenon, but it is too early to predict the impact on global weather, the World Meteorological Organization (WMO) said on Friday.
The phenomenon was also not expected to last long, the U.N. agency said in a statement.
Combined with other oceanic and atmospheric conditions, the temperatures were "consistent with the early stages of a basin-wide La Nina event," the WMO said.
But the agency said it very early in the year for the appearance of a basin-wide La Nina, which can upset normal weather and bring heavy rains and droughts, and this made it hard to predict its impact.
"There is some additional uncertainty over the extent to which typical La Nina rainfall and temperature patterns will occur," it said.
Furthermore, the phenomenon was expected to be relatively short-lived, with a return to what the agency called "neutral" conditions by the middle of the year or shortly thereafter.
In the Philippines, where a community of 1,800 people was entombed by a landslide last month on Leyte island, the national weather bureau has said that typhoons, flood and rains since November might be linked to development of La Nina.
The WMO said careful monitoring would be needed for indications that La Nina could last longer or even turn into an El Nino event, which can also have devastating climatic effects and occurs when sea surface temperatures rise substantially.
"Neither of these two scenarios is considered likely, but cannot be ruled out at the current time," the WMO said.
www.localnewsleader.com/brocktown/stories/index.php?action=fullnews&id=152138
GENEVA - Cool sea surface temperatures in the central and eastern Pacific point to a La Nina phenomenon, but it is too early to predict the impact on global weather, the World Meteorological Organization (WMO) said on Friday.
The phenomenon was also not expected to last long, the U.N. agency said in a statement.
Combined with other oceanic and atmospheric conditions, the temperatures were "consistent with the early stages of a basin-wide La Nina event," the WMO said.
But the agency said it very early in the year for the appearance of a basin-wide La Nina, which can upset normal weather and bring heavy rains and droughts, and this made it hard to predict its impact.
"There is some additional uncertainty over the extent to which typical La Nina rainfall and temperature patterns will occur," it said.
Furthermore, the phenomenon was expected to be relatively short-lived, with a return to what the agency called "neutral" conditions by the middle of the year or shortly thereafter.
In the Philippines, where a community of 1,800 people was entombed by a landslide last month on Leyte island, the national weather bureau has said that typhoons, flood and rains since November might be linked to development of La Nina.
The WMO said careful monitoring would be needed for indications that La Nina could last longer or even turn into an El Nino event, which can also have devastating climatic effects and occurs when sea surface temperatures rise substantially.
"Neither of these two scenarios is considered likely, but cannot be ruled out at the current time," the WMO said.
www.localnewsleader.com/brocktown/stories/index.php?action=fullnews&id=152138