From a new website that aims to show “global warming” by congressional district:
Scientists tell us that the global average temperatures over land have warmed 1.4 degrees F since 1880. But how have temperatures changed here in the US, in my state, in my congressional district? This site compares the global warming with temperature trends at local levels. Find your state …
Only one problem, they look for trends where there are none by cherry-picking. For example, I didn’t have to go far to spot the bias. The first state in the menu, Alabama, gives it up easily:
The obvious problems:
1. The downward century scale trend from 1880.
2. The current temperatures of these two stations is about the same as in 1900-1920.
3. They choose an arbitrary start date, 1960, to calculate a trend from that date to 2012, finding warming in a short period, while ignoring the 1880 date they cite in their masthead.
4. They use the NASA GISS homogenized temperature data set, known to be highly adjusted and unreliable, because the GISS process adds to station trends. Observe:
Now we know why they chose 1960 as the cherry-pick start point.
5. They try to explain “the pause” in surface temperature in the last decade by running to another metric like the SkS Kidz do.:
Comments on 2012: While global temperatures remained within the range of the last decade, the ocean continued its absorption of heat energy. The ocean heat content is a fundamental indicator of global warming since the ocean absorbs ~90% of the heat energy trapped by greeenhouse gases. Average annual temperature for the continental US was the warmest on record (not shown).
6. No mention of ocean cycles like the PDO, AMO, etc to help explain to users why some parts of the record rise, and other parts fall.
7. They ignore station siting and land use issues which contribute to localized temperature bias.
8. They lead users off on a carbon footprint crusade:
Let the Green Ninja show you how to change your lifestyle and reduce your carbon foot print. The videos are entertaining too!
Now if skeptics did something like this, except show cherry-picked periods that showed a cooling in a larger century scale dataset, and then offer a link to say, “Heartland” touting free market solutions, our hotheaded friends would start caterwauling to high heaven. “Tamino” aka Grant Foster would have a graphical conniption fit, Gavin would issue smug proclamations on Twitter, and there would be a campaign started to discredit it.
But it’s OK when they do it.