Global Humanitarian Forum report: A Methodological Embarassment

A Methodological Embarassment, by Roger Pielke, Jr.
Prometheus, May 29th, 2009

Excerpts:

I am quoted in today’s NYT on a new report issued by the Global Humanitarian Forum which makes the absurd claim that 315,000 deaths a year can be attributed to the effects of rising greenhouse gas concentrations. Here is what I said:

Roger A. Pielke Jr., a political scientist at the University of Colorado, Boulder, who studies disaster trends, said the forum’s report was “a methodological embarrassment” because there was no way to distinguish deaths or economic losses related to human-driven global warming amid the much larger losses resulting from the growth in populations and economic development in vulnerable regions. Dr. Pielke said that “climate change is an important problem requiring our utmost attention.” But the report, he said, “will harm the cause for action on both climate change and disasters because it is so deeply flawed.”

Strong comments I know. Shoddy work on disasters and climate change is the norm, unfortunately, and something I’ve been closely following for well over a decade. I have no illusions that this latest concoction will be repeatedly cited regardless.

Below are my comments to the NYT upon reading the report (cleaned up and formatted). Caution, strong views ahead.

Let me apologize for the length of this reply. But it is important to be clear and to set the record straight.

Let me say first that human-caused climate change is an important problem requiring our utmost attention. Second, the effects of disasters, particularly in poorer countries, is also an important problem that to some degree has been overlooked, as I have argued for many years.

However, I cannot express how strongly I feel that this report has done a disservice to both issues. It is a methodological embarrassment and poster child for how to lie with statistics. The report will harm the cause for action on both climate change and disasters because it is so deeply flawed.

It will give ammunition to those opposed to action and divert attention away from the people who actually need help in the face of disasters, yet through this report have been reduced to a bloodless statistic for use in the promotional battle over climate policies. The report is worse than fiction, it is a lie. These are strong words I know.

1. Let me first start by noting that the same group that did the analysis for the UN, the Geo-Risks group in Munich Re, earlier this year published a peer-reviewed paper arguing that the signal of human-caused climate change could not presently be seen in the loss data on disasters. [...]

3. The report cites and undates the Stern Review Report estimates of disaster losses, however, in a peer-reviewed paper I showed that these estimates were off by an order of magnitude and relied on a similar sort of statistical gamesmanship to develop its results (and of course this critique was ignored):

Pielke, Jr., R. A., 2007. Mistreatment of the economic impacts of extreme events in the Stern Review Report on the Economics of Climate Change, Global Environmental Change, 17:302-310. (PDF)

This report is an embarrassment to the GHF and to those who have put their names on it as representing a scientifically robust analysis. It is not even close.

Best regards,

Roger