Category Archives: GISS

NASA Goddard Institute for Space Studies

GISS, News and Views

GISS/NASA/NOAA graphics illustrate significant UHI truths

12 Comments

In a 2000 paper submitted to JGR-Atmospheres GISS lead authors and several other leading US experts in the field of temperature data history include two very simple diagrams which illustrate major truths about how how urban influences impact on temperature station data.

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Does anybody believe that global trends reflect the "undisturbed temperature" as drawn on these figures ?

Sorry for the lack of fresh posts this month.

GISS, IPCC, Jones et al, Surface Record, Urban Heat Islands

Satellite global temperature trends; still much less warming than Jones and GISS

100 Comments

There is a tendency around to claim that satellite Lower Troposphere (LT) T trends now agree with Jones et al (land & sea) and GISS land based trends. 
But this is not so.
Trend differences of circa 0.047 C per decade are huge when viewed against the claims by Jones et al / IPCC of only 0.05 C UHI contamination over the century plus surface record.  For graphic and details. Continue reading Satellite global temperature trends; still much less warming than Jones and GISS →

GISS, IPCC, News and Views, Surface Record, Urban Heat Islands

How NASA GISS inserts warming into USA rural T data

17 Comments

Trawling through files from 2001 I came across this rare example of an email from Dr Jim Hansen that actually gives an insight into what GISS does with temperature data.
For background I have my page commenting on Jones et al use of Miami.
www.warwickhughes.com/climate/miami.htm
Then my page on the five degree grid cell covering much of Florida and commenting on Jones 1994 additions.
www.warwickhughes.com/climate/florida.htm
Then this page commenting on GISS data which inserts warming into rural data west of Miami.
www.warwickhughes.com/climate/giss_fl.htm

Continue reading How NASA GISS inserts warming into USA rural T data →