Category Archives: Data and observations

by Steve McGee

Unlike many fiscal budgets, earth’s energy budget is widely believed to be in surplus.

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by Greg Goodman

Update added at end of article

Running means are often used as a simple low pass filter (usually without understanding its defects). Often it is referred to as a “smoother”.

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by Judith Curry

A paper published Science finds reconstructed Pacific Ocean heat content has been significantly higher throughout the vast majority of the past ~10,000 years in comparison to the latter 20th century.

“The findings support the view that the Holocene Thermal Maximum, the Medieval Warm Period, and the Little Ice Age were global events, and they provide a long-term perspective for evaluating the role of ocean heat content in various warming scenarios for the future.”

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by Judith Curry

Ocean heat sequestration: false sense of security, or a solution to the global (surface) warming problem?

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by Steven Mosher

Some updates from the Berkeley Earth Surface Temperature project.

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by Judith Curry

Kevin Trenberth famously stated in the CRU emails:

The fact is that we can’t account for the lack of warming at the moment and it is a travesty that we can’t.

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by Rud Istvan

This instantly ‘famous’ 2013 Science hockey stick paper derived from Marcott’s 2011 Ph.D thesis at Oregon State University, available here. His thesis doesn’t show a hockey stick ‘blade’ projecting above its anomaly baseline NCDC 1961-1990. H/T to Jean S, posted at Climate Audit. Something changed after the thesis was published to produce the new ‘blade’ in Science. That something was significant, since the Science paper’s Supplementary Information discussion said it did not enable discriminating such a temperature variation (i.e. a ‘blade’) on such a short a time scale.

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by Rud Istvan

On March 8, 2013, mainstream media around the world carried headlines trumpeting a new study in Science, the gist typified by NBC News:

Warming fastest since dawn of civilization

Except that is not what the paper was about.

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by Steve Mosher

It has been a while since we’ve done an update and there is much to report on, including an update to the web site, some additional memos/papers to discuss and an update on the papers. Let’s start with the web site.

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by Judith Curry

The demand for climate information, with long observational records spanning decades to centuries and the information’s broad application for decision making across many socioeconomic sectors, requires that geophysicists adopt more rigorous processes for the sustained production of climate data records (CDRs). Such processes, methods, and standards are more typically found in the systems engineering community and have not generally been adopted in the climate sci- ence community. – John Bates and Jeffrey Privette

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by Steven Mosher and Zeke Hausfather

Today the Berkeley Earth Surface Temperature Project released a major update to their temperature data. The update includes:

• Global and regional land temperature estimates back to the 1750s, with estimated uncertainties.
• Temperature figures and data for every country, state, city, and individual station.
• New estimates of the effect of early volcanoes as well as CO2 on the temperature record.
• Globally gridded min, max, and mean anomalies for 1×1 lat lon cells for each month for land areas.

The link to the new paper from the Berkeley Earth group is [here].

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