Monthly Archives: April 2013

The art and science of effective science advice

by Judith Curry

“Universities, then, are doing the research. Governments, and their public services, want the evidence. Why is it so difficult to get these two worlds to meet at an intersection of knowledge that can influence in significant ways the making of public policy? Why does Australia’s large public investment in research and development contribute so little to addressing the political response to the nation’s economic and social challenges?” – Peter Shergold

Continue reading

Open thread weekend

by Judith Curry

It’s your turn to introduce topics for discussion.

Congressional Hearing on Policy-Relevant Climate Issues in Context

by Judith Curry

The Hearing on Policy-Relevant Climate Issues in Context is now beginning.

Continue reading

Congressional hearing rescheduled

by Judith Curry

The U.S. House Subcommittee on Environment Hearing on Policy Relevant Climate Issues in Context will be held tomorrow, April 25 at 10 a.m.

Continue reading

Do scientific assessments need to be consensual to be authoritative?

by Judith Curry

The drive for consensus within the IPCC process, and its subsequent public marketing, has becomes a source of scientific weakness rather than of scientific strength in the turbulent social discourses on climate change. – Mike Hulme

Continue reading

What are the factors contributing to the reduction in U.S. carbon emissions?

by Judith Curry

The U.S. was the largest emitter carbon dioxide (CO2) until 2006 when China’s emissions exceeded the U.S.  U.S. CO2 emissions from the consumption of fossil fuels peaked in 2007 and have declined significantly over the past five years.  - John Miller

Continue reading

10 signs of intellectual honesty

by Judith Curry

When it comes to just about any topic, it seems as if the public discourse on the internet is dominated by rhetoric and propaganda. People are either selling products or ideology. In fact, just because someone may come across as calm and knowledgeable does not mean you should let your guard down and trust what they say. What you need to look for is a track record of intellectual honesty. – Mike Gene

Continue reading

Open thread weekend

by Judith Curry

It’s your turn to introduce topics for discussion.

Meta-uncertainty in the determination of climate sensitivity

by Judith Curry

Two heavyweight climate scientists have published very different ideas about how much the Earth is going to warm in the coming decades. – Washington Weather Gang

Continue reading

Predictions of climate change impacts on fisheries can be a mirage

by Judith Curry

A novel method for causal inference has been motivated by .  .  .  sardines.

Continue reading

Open thread weekend

by Judith Curry

It’s your turn to introduce topics for discussion.

The Forest 2006 climate sensitivity study and misprocessing of data – an update

by Nicholas Lewis

Some of you may recall my guest post at Climate Etc last June, here, questioning whether the results of the Forest et al., 2006, (F06) study on estimating climate sensitivity might have arisen from misprocessing of data.

Continue reading

Historic Variations in Arctic sea ice. Part II: 1920-1950

by Tony Brown

Satellite observations that provide an hour by hour picture of every part of the Arctic make it easy to forget that large areas of it had not even been even explored 80 years ago – let alone its ice extent minutely observed.  This paper explores the controversy surrounding the period 1920-1950, which was a period of substantial warming in the Arctic.

Continue reading

U.S. climate policy discussion thread

by Judith Curry

Climate change is back on President Obama’s agenda.

Continue reading

We’re not screwed (?)

by Judith Curry

We’re screwed: 11,000 years’ worth of ­climate data prove it.  It’s among the most compelling bits of proof out there that human beings are behind global warming, and as such has become a target on Mann’s back for climate denialists looking to draw a bead on scientists. The Atlantic, March 9th

We’re not screwed. The trouble is, as they quietly admitted over the weekend, their new and stunning claim is groundless. The real story is only just emerging, and it isn’t pretty. – Ross McKitrick

Continue reading