USHCN turns a cooling trend (red line) from the thermometers into an “adjusted” warming trend (blue line.)
Phil Mote, director of the climate change research institute at Oregon State University, agreed regional details can be fuzzy. But the general direction for Oregon and the Northwest is clear, he said, with no plausible scenario in which the region cools over the next 40 years.
“Right now we’re operating in this sort of murky time where we have a pretty good idea of the direction that things are changing, but not the rate or the magnitude,” Mote said. “So we can give vague advice to say, consider building bigger culverts (to handle potential surges in stream flows), but we can’t in most cases give precise values.”
Northwest temperatures increased about 1.5 degrees from 1920 to 2003, the research institute’s report says, “primarily” due to human-caused carbon emissions. Every Oregon station in the U.S. Historical Climatology Network showed an increase in annual average temperature in the 20th century, the report says, but total precipitation has fluctuated and trends in extreme precipitation that causes floods “are ambiguous.”
He forgot to mention that this is after USHCN has reversed the trends – from cooling to warming.
But after proper manipulation by USHCN – presto a warming trend.