cloud seeding?

Not to dismiss cloud seeding(geoengineering) it is real science.but the pacific is in a la Nina pattern. See link

http://www.wmo.int/pages/prog/wcp/wcasp/enso_update_latest.html

http://en.wikipedia.org/wiki/Geoengineering

The 2010/11 La Niña episode began in mid-July 2010, and has still not completely dissipated as of mid-May 2011. Sea surface temperatures in the central equatorial Pacific were about 1.5 degrees Celsius colder than average over the period September 2010 to early March 2011, indicating a moderately strong La Niña event. However, the atmospheric aspects of the event have shown this episode to be one of the strongest of the last century. Typically during La Niña events, cool sea surface temperatures extended across the eastern Equatorial Pacific to the South American coastline. This time, from about February to the present, sea surface temperatures close to the South American coastline became near to above average, ending the La Niña climate effects in the surrounding region. However, the large area of cool surface waters over the bulk of the central and eastern equatorial Pacific, combined with warm conditions in the equatorial western Pacific, represented a strong La Niña forcing on the global atmosphere, with many climate patterns approximately matching those typically associated with La Niña events during these months, both in the vicinity of, and remote from, the tropical Pacific. The atmospheric aspects of this La Niña, such as enhanced trade winds in the western and central part of the Pacific basin and the Southern Oscillation Index, were near record levels from September 2010 through the end of April 2011, and have only very recently begun weakening substantially. In association with these atmospheric conditions, disastrously wet conditions were experienced in parts of northern and eastern Australia, Indonesia, Southeast Asia, and portions of northern South America (e.g., Colombia) in late 2010 and/or early 2011. 

No joke they flew over California yesterday. 4-5 Chemtrails that I could see. I am not sure why they are doing this either...I watched only part of the video (time constraints) but it is an eye-opener. I have seen them fly over before but did not know what they were doing and figured it was just an exhaust cloud. If I had to guess, I am thinking they seeded clouds after the initial blasts at Fukishima to try and have the radioactivity come down in the rain over the Pacific. I think they may have been a little late in this attempt...but I am just guessing. Why and what would they be spraying right now?