Tappavan viilee tyttö

AFP raportoi:

Icy conditions that have claimed dozens of lives across Europe since November are partly due to La Nina, an upsurge of cooler water to the Pacific Ocean surface, the UN's weather agency said Friday.

"The cold snap currently being experienced can be partly attributed to the La Nina phenomenon, which is a cooling of the sea surface in the central and eastern Equatorial Pacific," the World Meteorological Organization (WMO) said.

"However, it should be recalled that weather conditions are the result of extremely complex interactions, and, therefore, one particular event cannot be attributed to one specific cause," the statement added.
---
Extreme conditions in recent days have seen: heavy snow in Marseille in southern France for the first time in 20 years; Madrid's airport forced to close due to rare snowfalls; and more than 80 deaths from the cold in Poland alone.

Kova tyttö tuo La Nina! WMO:n viimeisin ENSO päivitys (22.11.2008) kertoo:

Taking the Pacific basin as a whole, near-neutral El Niño-Southern Oscillation conditions have prevailed since mid-year. Any slight increased risk that an El Niño might develop late in 2008 has receded, as surface waters remain only marginally warmer than normal in the central and eastern Equatorial Pacific, and no strongly organized large-scale sub-surface warming has emerged.

Forecast models are in general agreement that near-neutral conditions will prevail through the remainder of 2008, and that there is no substantial risk of El Niño or La Niña through the remainder of 2008 and indeed into early 2009.

NOAA:n viimeisin (8.1.2009) puolestaan tietää lisätä:

During December 2008, negative equatorial sea surface temperature (SST) anomalies strengthened across the central and east-central Pacific Ocean (Fig. 1). Correspondingly, the latest weekly SST index values were -0.3°C in Niño-1+2, -0.9°C in Niño 3, -1.1°C in Niño 3.4, and -0.7°C in Niño 4 (Fig. 2). The subsurface oceanic heat content anomalies (average temperatures in the upper 300m of the ocean, Fig. 3) also became increasingly negative as below-average temperatures at thermocline depth strengthened in the central and eastern Pacific (Fig. 4). Convection remained suppressed near the International Date Line, and became more persistent near Indonesia during December. Low-level easterly winds and upper-level westerly winds also strengthened across the equatorial Pacific Ocean. Collectively, these oceanic and atmospheric anomalies reflect the development of La Niña.

Ajatelkaa, La Niña -tyttönen vasta alkoi kehittyä joulukuussa, ja jo marraskuussa sää ennakoi muuttumalla tappavan kylmäksi. Mitähän sitten tapahtuu kun La Niña saavuttaa täyden voimansa? Pelottaa, kun katsoo miten Puolueen Näköradiossa on onnistuttu tarkentamaan tuota AFP:n uutista:

YK: Euroopan kovat pakkaset aiheutti La Niña -sääilmiö

julkaistu tänään klo 21:51

YK:n sääjärjestö WMO syyttää Euroopan kovista pakkasista sääilmiö La Niñaa. Poikkeuksellisen kovat pakkaset ovat aiheuttaneet myös useita kuolemia Euroopassa marraskuun jälkeen.
---
WMO nimesi viime talvena sääilmiö La Niñan myös Yhdysvaltain rajujen tornadojen ja Afrikan kuivuuden aiheuttajaksi. Keskisen ja itäisen Tyynenmeren pintavesiä viilentävän La Niñan vaikutuksia havaittu Pohjois- ja Etelä-Amerikassa, Afrikassa ja Aasiassa.

AFP, YLE Uutiset