From PBS last night: From Rooftop to Alleyway, Chicago Fights Extreme Urban Heat With Greener Ideas
One of Chicago’s most beautiful and hidden gardens is located on top of City Hall, part of an effort to ‘green’ roofs in order fight rising temperatures. Hari Sreenivasan reports on the actions the city of Chicago is taking to mitigate climate change in an urban landscape.
Here’s the video report:
THOMAS PETERSON, Climatologist, National Oceanic and Atmospheric Administration: We look at temperature at rural stations and we look at temperatures at urban stations.
And we see if they are showing the same thing in the long-term trend variability and change. And they are showing the same thing in our record, both in the U.S. record and in the global record. What we find is when we account for the different factors that impact temperature at a location, we see that the temperature in urban sites is warming at about the same rate as temperature in rural sites.
From transcript at:
Dr. Peterson sidestepped the real seasonal heat issues for cities. It isn’t the trend, but the absolute temperatures. Heat waves born in urban heat islands aren’t so much about trends like 0.7C over the last century, but they are about the high temperature that day. Anybody who has ever watched a TV weather report or driven a car from downtown to the suburbs in the evening can see how cities are warmer and retain heat longer.
In a few days, I’ll be releasing a first ever live rural-urban temperature comparison project, never before done, that will help provide a near real-time window on this problem. Its something that should have been done a long time ago, and could easily have been done anywhere in NOAA and especially at NCDC. But NCDC’s Peterson and others don’t like the sorts of comparisons I’m about to make, which is why they don’t like to talk about the absolute temperature differences between urban and rural stations on national TV.
But I suppose his belief isn’t surprising, when you live in an homogenized data world, every temperature looks the same to them.
h/t to R. Cook