Hansen tells us that 4C UHI is insignificant, in comparison to the 0.4C anomaly of 2012.
NEW YORK CITY’S HEAT ISLAND.
(Rosenthal et al. 2003; Gaffin et al. 2008), and the heat island signal, measured as the difference between the urban core and the surrounding rural surface air temperature readings taken at National Weather Service (NWS) stations, averages ~4°C on summer nights (Kirkpatrick and Shulman 1987; Gedzelman et al. 2003; Gaffin et al. 2008). The greatest temperature differences typically are sustained between midnight and 0500 Eastern Standard Time (EST; Gaffin et al. 2008).
Surface air temperature readings from these stations show that the city was several degrees warmer than the suburbs, and up to 8°C warmer than rural areas within 100 km of the city, with conditions that had been sustained throughout the previous night.
This is what I have been saying for over twenty years…
People live in cities. People put thermometers in cities, or near structures for the convenience of people. Those cities and structures influence the local climate/temperature.
So simple, even a leftist should be able to figure it out (and hide it).
Where is the official USHCN weather station for NYC located?
Hey Doc! Here is some related info you may find interesting…
http://icecap.us/images/uploads/CENTRAL_PARK_TEMPERATURE_COMPARISON.pdf
Thanks for the info. I wonder how they got that adjustment curve. Why is UHI decreasing???
The electric oven here has a (digital) granularity of 5°F. If I look at it every three minutes, I can know the temperature to within ±1°F within an hour, and ±0.1°F in four days. More to the point, if my neighbour is baking a pie 80ft away, that tells me my oven temperature to within 80/3,937,007.87°F. Man, climate science is so useful!