The way things are going, we may need to throw out even more contaminated “data” that has been used to track climate for over a century, because it can’t technically be called anything other than anecdotal:
The network relies on volunteers in the 48 contiguous states to take daily readings of high and low temperatures and precipitation measured by sensors they keep by their homes and offices. They deliver that information to the National Climatic Data Center (NCDC), which uses it to track changes in the climate.
Requirements aren’t very strict for volunteers: They need a modicum of training and decent vision in at least one eye to qualify. And they’re expected to take measurements seven days a week, 365 days a year.
That’s a recipe for trouble, says Watts, who told FoxNews.com that less scrupulous members of the network often fail to collect the data when they go on vacation or are sick. He said one volunteer filled in missing data with local weather reports from the newspapers that stacked up while he was out of town.
And that’s just the tip of the iceberg. Volunteers take their readings at different times of day, then round the temperatures to the nearest whole number and mark down their measurements on paper forms they mail in monthly to the NCDC headquarters in Ashville, N.C.
“You’ve got this kind of a ragtag network that’s reporting the numbers for our official climate readings,” said Watts, who found that 90 percent of the stations violated the government’s guidelines for where they may be located.
Watts believes that poor placement of temperature sensors has compromised the system’s data. Though they are supposed to be situated in empty clearings, many of the stations are potentially corrupted by their proximity to heat sources, including exhaust pipes, trash-burning barrels, chimneys, barbecue grills, seas of asphalt — and even a grave.
There’s an old saying, frequently used in statistical discussions, that the “plural of anecdote is not data”. This is an excellent example of unreliable information being collated and depended upon as if it was rigorous and objective.
