Saturday, December 23, 2006

Test

Here is a link to the Pielke Sr. blog. This is primarily a test of the interface between "performancing" and blogger.



And here is a quote:

There have been proposals to engineer the global climate system so as to reduce a positive radiative imbalance associated with the well-mixed greenhouse gases, particularly CO2. This would be global climate modification.



And this is smaller text.

And this larger.





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Friday, October 20, 2006

Southern Ocean warming due to human influence

GEOPHYSICAL RESEARCH LETTERS, VOL. 33, L19701, doi:10.1029/2006GL027247, 2006

John C. Fyfe

Canadian Centre for Climate Modelling and Analysis, Environment Canada, Victoria, British Columbia, Canada


Abstract

I show that the latest series of climate models reproduce the observed mid-depth Southern Ocean warming since the 1950s if they include time-varying changes in anthropogenic greenhouse gases, sulphate aerosols and volcanic aerosols in the Earth's atmosphere. The remarkable agreement between observations and state-of-the art climate models suggests significant human influence on Southern Ocean temperatures. I also show that climate models that do not include volcanic aerosols produce mid-depth Southern Ocean warming that is nearly double that produced by climate models that do include volcanic aerosols. This implies that the full effect of human-induced warming of the Southern Ocean may yet to be realized.

Received 15 June 2006; accepted 5 September 2006; published 4 October 2006.

LINK

Thursday, October 19, 2006

Minimum Wages & Employment

Minimum Wages and Employment: A Case Study of the Fast-Food Industry in New Jersey and Pennsylvania

David Card; Alan B. Krueger

The American Economic Review, Vol. 84, No. 4. (Sep., 1994), pp. 772-793.

Stable URL

Abstract
On April 1, 1992, New Jersey's minimum wage rose from $4.25 to $5.05 per hour. To evaluate the impact of the law we surveyed 410 fast-food restaurants in New Jersey and eastern Pennsylvania before and after the rise. Comparisons of employment growth at stores in New Jersey and Pennsylvania (where the minimum wage was constant) provide simple estimates of the effect of the higher minimum wage. We also compare employment changes at stores in New Jersey that were initially paying high wages (above $5) to the changes at lower-wage stores. We find no indication that the rise in the minimum wage reduced employment.

Follow-up

Minimum Wages and Employment: A Case Study of the Fast-Food Industry in New Jersey and Pennsylvania: Comment

David Neumark; William Wascher

The American Economic Review, Vol. 90, No. 5. (Dec., 2000), pp. 1362-1396.

Stable URL

Minimum Wages and Employment: A Case Study of the Fast-Food Industry in New Jersey and Pennsylvania: Reply

David Card; Alan B. Krueger

The American Economic Review, Vol. 90, No. 5. (Dec., 2000), pp. 1397-1420.

Stable URL

Tuesday, September 26, 2006

ethanol energy resources

Ethanol:

The Energy Harvest $ NYTimes Thomas Friedman

  • Ethanol is a very good energy source
  • The Brazillians have replaced 40% of their gasoline consumption with ethanol
  • Not mentioned: The Brazilians use sugar cane for ethanol production which is more efficient
Science Friday (2006.08.04) free audio NPR
There might be a problem with the idea of making ethanol fuel for cars and industry from corn. One economist is worried that there won't be enough corn left over to feed people. Is ethanol the answer to our energy woes?

Show: "Ethanol"
RealAudio format
Windows Media format
mp3 download


Science Friday (2006.09.15) free audio NPR
But there might be an answer in the form of poplar trees whose genome having recently been sequenced has allowed researchers to propose improving its ability to serve as a source for ethanol production.

Show: "Tree genome"
RealAudio format
Windows Media format
mp3 download