...." In an article to be published later this week in the journal Nature, the four-nation team headed by two Toronto-based climate scientists with Environment Canada compared 75 years of rainfall records from around the world with the precipitation predictions in nearly 100 computer simulations based on 14 separate global climate models....Zwiers, along with Environment Canada colleague Xuebin Zhang and six other researchers from the U.S., Britain and Japan, note in their paper that human influence has previously been detected in air and ocean temperature trends and other climate measures, but never in rainfall patterns.........
"We estimate that anthropogenic forcing contributed significantly to observed increases in precipitation in the Northern Hemisphere mid-latitudes (between 40 and 70 degrees North) drying in the Northern Hemisphere subtropics and tropics, and moistening in the Southern Hemisphere subtropics and deep tropics," the scientists conclude. "The observed changes, which are larger than estimated from model simulations, may have already had significant effects on ecosystems, agriculture and human health in regions that are sensitive to changes in precipitation, such as the Sahel."

Record Rainfall in Southern British Columbia part of a global trend now linked to Global warming.

In a new study published on July 23, 2007 in the journal Nature, led by climate researcher Xuebin Zhang and Francis Zwiers, of Environment Canada in Toronto, the first evidence is presented to connect human activity with changing precipitation patterns. "Humans have caused global precipitation patterns to change substantially over the past century, new research says. About 1.8 inches (4.5 centimeters) more rain fell annually in Canada, Russia, and Europe in recent years than it did in 1925. In the northern tropics and subtropics, such as Mexico and northern Africa, rainfall has decreased by nearly 2.8 inches (7 centimeters) per year, and the southern tropics and subtropics such as Peru and Madagascar have seen increased rainfall of about 2.4 inches (6 centimeters). Altogether humans account for about two-thirds of the precipitation increase in Canada, Russia, and Europe, a third of the drying out in the northern tropics and subtropics, and nearly all of the increase south of the Equator, the study says.A significant driver behind the altered rainfall is greenhouse gas emissions, primarily from coal and oil burning, that contribute to global warming.".. (a quote from: National Geographic News.) July 23, 2007 ).

Also on this page Global warming already changing rainfall. An article from: Agence France-Presse July 24, 2007 .

"A study has yielded the first confirmation that global warming is already affecting the world's rainfall patterns, bringing more precipitation to northern Europe, Canada and northern Russia but less to swathes of sub-Saharan Africa, southern India and Southeast Asia.....".

Pineapple Express soaks southern B.C.

Scott Sutherland Canadian Press November 7, 2006

VICTORIA -- "The Pineapple Express barrelled through southern British Columbia yesterday, bringing rainfall higher than has ever been recorded. The deluge caused at least one river to spill its banks and 30 homes along the Chilliwack River were evacuated because of the rising water level......."

" Vancouver has had 23 consecutive days of rain and is on track to set a 53-year record amid renewed fears of mudslides. The current record is 28 days, set in January 1953......."