Comments on: Hansen Step 2 – First Thoughts

By: SAJJAD

SAJJAD — Mon, 04 May 2009 12:55:45 +0000

Dear Sir,
I need script to find out/measure Urban Heat Island effect over Karachi-Pakistan. My data is monthly and annual basis. I am using mean monthly, mean maximum and mean minimum temperature of Karachi for Two observatories: One Located in city centre (Airport) and second outside city (about 30km away from the city centre)
I shall be thanks if some one guide me that how can I make the script in Linux for the Fortran 90…
best regards

Sajjad
Université de Strasbourg
France

By: John V.

John V. — Sun, 30 Sep 2007 02:58:38 +0000

This has probably been said before, but it’s worth repeating. The Rasool and Schneider paper looked at the effect of quadrupling aerosols and found that it would cause severe cooling. For their analysis they used a program created by Hansen for analysis of clouds on Venus.

What part of that is controversial?
Do aerosols cause cooling? Yes.
Can software be written for one purpose and used for another? Yes.

By: theduke

theduke — Sun, 30 Sep 2007 01:52:04 +0000

Hansen has responded to this week’s bad publicity:

http://www.columbia.edu/~jeh1/

By: Pete Petrakis

Pete Petrakis — Fri, 28 Sep 2007 02:08:02 +0000

Re: “Terrestrial clouds”? Is that as opposed to extraterrestrial clouds?”

Literally. The 1971 Washington Post article said that the model Rasool and Schneider used for their “global cooling” study was designed by Hansen for the study of clouds in the atmosphere of Venus.

By: Dasher

Dasher — Thu, 27 Sep 2007 14:49:46 +0000

http://www.dailytech.com/NASA+James+Hansen+and+the+Politicization+of+Science/article9061.htm

By: Larry

Larry — Wed, 26 Sep 2007 00:17:59 +0000

108, “Terrestrial clouds”? Is that as opposed to extraterrestrial clouds?

By: Pete Petrakis

Pete Petrakis — Tue, 25 Sep 2007 23:57:19 +0000

Postscript to No. 107.

Rasool and Schneider said in their Science
article that their parameters, “are described further by Hansen and
Pollack (17).” Footnote 17 references a paper by J.E. Hansen and J.B.
Pollack titled “Near-Infrared Light Scattering by Terrestrial Clouds”
that was published in the Journal of
the Atmospheric Sciences in March 1970. That is probably the
Hansen model Rasool was referring to in his statements to the Washington Post reporter. The
abstract is here.

By: Pete Petrakis

Pete Petrakis — Tue, 25 Sep 2007 23:28:21 +0000

Re: “Where does the Rasool and Schneider article say that Hansen developed the climate model they used?

The article itself doesn’t say it specifically, but the author of the Washington Post article of July 9, 1971 cited Rasool saying that the model he and Schneider used was designed by Hansen.

By: cce

cce — Tue, 25 Sep 2007 19:23:17 +0000

Where does the Rasool and Schneider article say that Hansen “developed the climate model they used”? If it was Hansen’s model, and Hansen’s conclusion, it would have Hansen’s name on it.

By: SteveSadlov

SteveSadlov — Tue, 25 Sep 2007 17:56:46 +0000

RE: #96 – I strongly disagree with the “chunk breaking off” idea. The main pack in fact reached Iceland this past season. Do note that Cryosphere Today underreports extent of any ice that is less than 60 or 70% concentration and also has significant underreporting problems at the ice edge. These issues are artifacts of reliance on the flawed passive microwave remote sensing techniques used by the raw data (satellite) collection network used at NSIDC (which is where CT get their feed, although CT’s interpretation algorithms are claimed to be different than NSIDC’s).