READ ABOUT DETROIT AND SOLUTIONS TO ITS PROBLEMS. CLICK HERE.

Monday, February 26, 2007

Extreme Temperatures As A Measure Of Global Warming

SEARCH BLOG: GLOBAL WARMING

Yesterday, I posted some graphs of temperature high/low records for the 50 U.S. states. I wanted to be sure that there was no confusion about the information.

The data show records as of 2004 (when the available data ended from the source I used). Some readers may have interpreted the data to be the number of records set during the year, but that is not the case. Therefore, the 30 record high temperatures for 1936 are those that remain records after nearly 70 years.

Also note that there is a bias for temperature records that are most recent. If a record was set and then matched by the same temperature for that month (different year) in that state, the latest date is used. This could cause the record temperatures for earlier years to be understated and somewhat overweight most recent records as a percent of the total. For example, if a (hypothetical) record high of 90 degrees in March 1930 for Oklahoma is matched in 1998, the 1998 data is shown and the 1930 data is dropped.
A commenter at Climate Science cited a post in RealClimate which supports my position that extreme temperatures should be an indicator or global warming if the records are most frequently at the most recent part of the timeline.
Further analysis showed that the absolute monthly maximum/minimum temperature was poorly correlated with that of the previous month, ruling out dependency in time (this is also true for monthly mean temperature - hence, 'seasonal forecasting' is very difficult in this region). Additional tests (Monte Carlo simulations) were used to check whether a spatial dependency could explain the deviation from the iid-rule, but the conclusion was that it could not explain the observed number of records. A similar conclusion was drawn from a similar analysis applied to a (spatially sparse) global network of monthly mean temperatures, where the effect of spatial dependencies for inter-annual and inter-decadal variations could be ruled out (Benestad, 2004). Thus, the frequent occurrence of record-high temperatures is consistent with a global warming.
When you examine the graphs on yesterday's post, you will see that the most frequent period of record high temperatures was from 1930-1954... even after some records set during those years may have been eliminated by new records in later years. While 1998 and 2000 had a high number of records, the decade prior was notably average.

Labels: ,

Can"t Find It?

Use the SEARCH BLOG feature at the upper left. For example, try "Global Warming".

You can also use the "LABELS" below or at the end of each post to find related posts.

Blog Archive

Cost of Gasoline - Enter Your Zipcode or Click on Map

Detroit Gas Prices provided by GasBuddy.com
Click here to add this map to your website.

CO2 Cap and Trade

There is always an easy solution to every human problem—neat, plausible, and wrong.
Henry Louis Mencken (1880–1956)
“The Divine Afflatus,” A Mencken Chrestomathy, chapter 25, p. 443 (1949)
... and one could add "not all human problems really are."
It was beautiful and simple, as truly great swindles are.
- O. Henry
... The Government is on course for an embarrassing showdown with the European Union, business groups and environmental charities after refusing to guarantee that billions of pounds of revenue it stands to earn from carbon-permit trading will be spent on combating climate change.
The Independent (UK)

Tracking Interest Rates

Tracking Interest Rates

FEDERAL RESERVE & HOUSING

SEARCH BLOG: FEDERAL RESERVE for full versions... or use the Blog Archive pulldown menu.

February 3, 2006 Go back to 1999-2000 and see what the Fed did. They are following the same pattern for 2005-06. If it ain't broke, the Fed will fix it... and good!
August 29, 2006 The Federal Reserve always acts on old information... and is the only cause of U.S. recessions.
December 5, 2006 Last spring I wrote about what I saw to be a sharp downturn in the economy in the "rustbelt" states, particularly Michigan.
March 28, 2007
The Federal Reserve sees no need to cut interest rates in the light of adverse recent economic data, Ben Bernanke said on Wednesday.
The Fed chairman said ”to date, the incoming data have supported the view that the current stance of policy is likely to foster sustainable economic growth and a gradual ebbing in core inflation”.

July 21, 2007 My guess is that if there is an interest rate change, a cut is more likely than an increase. The key variables to be watching at this point are real estate prices and the inventory of unsold homes.
August 11, 2007 I suspect that within 6 months the Federal Reserve will be forced to lower interest rates before housing becomes a black hole.
September 11, 2007 It only means that the overall process has flaws guaranteeing it will be slow in responding to changes in the economy... and tend to over-react as a result.
September 18, 2007 I think a 4% rate is really what is needed to turn the economy back on the right course. The rate may not get there, but more cuts will be needed with employment rates down and foreclosure rates up.
October 25, 2007 How long will it be before I will be able to write: "The Federal Reserve lowered its lending rate to 4% in response to the collapse of the U.S. housing market and massive numbers of foreclosures that threaten the banking and mortgage sectors."
November 28, 2007 FED VICE CHAIRMAN DONALD KOHN
"Should the elevated turbulence persist, it would increase the possibility of further tightening in financial conditions for households and businesses," he said.

"Uncertainties about the economic outlook are unusually high right now," he said. "These uncertainties require flexible and pragmatic policymaking -- nimble is the adjective I used a few weeks ago."
http://www.reuters.com/

December 11, 2007 Somehow the Fed misses the obvious.
fed_rate_moves_425_small.gif
[Image from: CNNMoney.com]
December 13, 2007 [from The Christian Science Monitor]
"The odds of a recession are now above 50 percent," says Mark Zandi, chief economist at Moody's Economy.com. "We are right on the edge of a recession in part because of the Fed's reluctance to reduce interest rates more aggressively." [see my comments of September 11]
January 7, 2008 The real problem now is that consumers can't rescue the economy and manufacturing, which is already weakening, will continue to weaken. We've gutted the forces that could avoid a downturn. The question is not whether there will be a recession, but can it be dampened sufficiently so that it is very short.
January 11, 2008 This is death by a thousand cuts.
January 13, 2008 [N.Y. Times]
“The question is not whether we will have a recession, but how deep and prolonged it will be,” said David Rosenberg, the chief North American economist at Merrill Lynch. “Even if the Fed’s moves are going to work, it will not show up until the later part of 2008 or 2009.”
January 17, 2008 A few days ago, Anna Schwartz, nonagenarian economist, implicated the Federal Reserve as the cause of the present lending crisis [from the Telegraph - UK]:
The high priestess of US monetarism - a revered figure at the Fed - says the central bank is itself the chief cause of the credit bubble, and now seems stunned as the consequences of its own actions engulf the financial system. "The new group at the Fed is not equal to the problem that faces it," she says, daring to utter a thought that fellow critics mostly utter sotto voce.
January 22, 2008 The cut has become infected and a limb is in danger. Ben Bernanke is panicking and the Fed has its emergency triage team cutting rates... this time by 3/4%. ...

What should the Federal Reserve do now? Step back... and don't be so anxious to raise rates at the first sign of economic improvement.
Individuals and businesses need stability in their financial cost structures so that they can plan effectively and keep their ships afloat. Wildly fluctuating rates... regardless of what the absolute levels are... create problems. Either too much spending or too much fear. It's just not that difficult to comprehend. Why has it been so difficult for the Fed?

About Me

My photo
Michigan, United States
Air Force (SAC) captain 1968-72. Retired after 35 years of business and logistical planning, including running a small business. Two sons with advanced degrees; one with a business and pre-law degree. Beautiful wife who has put up with me for 4 decades. Education: B.A. (Sociology major; minors in philosopy, English literature, and German) M.S. Operations Management (like a mixture of an MBA with logistical planning)