Tag Archives: temperature

Crowdsourcing An Opensource Temperature Data Monitoring Methodology and Spreadsheet

Posted on May 23, 2013 by

Image Credit: Walter Dnes By Walter Dnes – Edited by WUWT Regular Just The Facts I have developed a methodology and spreadsheet to capture and chart HadCRUT3, HadCRUT4, GISS, UAH, RSS, and NOAA monthly global temperature anomaly data. Calculations are … Continue reading →

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Posted in Lower Troposphere Temperature, measurement, Temperature | Tagged , , , , | 49 Comments

Claim: How the IPCC arrived at climate sensitivity of about 3 deg C instead of 1.2 deg C.

Posted on May 18, 2013 by

UPDATE from Girma: “My title should have been ‘How to arrive at IPCC’s climate sensitivity estimate’ instead of the original” Guest essay by Girma Orssengo, PhD 1) IPCC’s 0.2 deg C/decade warming rate gives a change in temperature of dT … Continue reading →

Posted in Climate sensitivity, IPCC | Tagged , , , , , , , | 172 Comments

Climate models getting worse than we thought

Posted on May 16, 2013 by

New paper finds climate models are getting worse rather than better Via the Hockey Schtick: A paper published today in Geophysical Research Letters finds that the latest climate models are performing even worse than the earlier generations of climate models … Continue reading →

Posted in Modeling | Tagged , , , , , , , | 80 Comments

A mean study of Australian temperature

Posted on May 10, 2013 by

Mean and reported “Mean” temperatures and the consequences of the difference Guest essay by Tom Quirk The convention in meteorology is to report mean temperatures as the average of minimum and maximum temperatures. This assumption has been tested using temperatures … Continue reading →

Posted in Climate data | Tagged , , , , , , , | 62 Comments

UAH global temperature, down significantly

Posted on May 4, 2013 by

Dr. Roy Spencer reports: Our Version 5.5 global average lower tropospheric temperature (LT) anomaly for April, 2013 is +0.10 deg. C, down from +0.18 deg. C in March (click for large version): Not surprisingly, the cooling appears to be confined … Continue reading →

Posted in Climate data | Tagged | 59 Comments

On the scales of warming worry magnitudes–part 1

Posted on April 15, 2013 by

A few weeks after my paper came out I have received quite unexpected but greatly appreciated offer from Anthony to write a summary of the paper for his blog site. The paper’s title is: Should We Worry About the Earth’s … Continue reading →

Posted in Climate data | Tagged , , , , , , , | 115 Comments

A Big Picture Look At “Earth’s Temperature” – “The Pause” Update

Posted on April 14, 2013 by

Image Credit: NASA and BP.Blogspot.com By WUWT regular “Just The Facts” Recently there has been significant attention focused on “The Pause” in Earth’s warming, the length of “The Pause” and where “Earth’s Temperature” may go from here, e.g.: “Over the … Continue reading →

Posted in Climate data, Earth, measurement, Temperature | Tagged , , , , , | 99 Comments

Crowdsourcing the WUWT Paleoclimate Reference Page – Disputed Graphs – Alley (2000)

Posted on April 13, 2013 by

Image Credit: Photobucket.com – GISP2 – Alley, 2000 By WUWT regular “Just The Facts” In building WUWT Paleoclimate Reference Page during these crowdsourcing threads (1, 2) there have been a number disputes raised about various graphs. During this thread I … Continue reading →

Posted in Paleoclimatology, Temperature | Tagged , , , , | 66 Comments

Michael Mann says climate models cannot explain the Medieval Warming Period – I say they can’t even explain the present

Posted on April 11, 2013 by

Ice core data shows CO2 levels changed less than 10 parts per million from 1600-1800 during the MWP. From the Hockey Schtick:  A new paper from Schurer et al (with Mann as co-author) finds that climate “models cannot explain the warm … Continue reading →

Posted in IPCC AR5 leak, MedievalWarmPeriod, Michael E. Mann, Modeling | Tagged , , , , , , , | 113 Comments

Another proxy study with an ‘unprecedented’ temperature claim

Posted on April 10, 2013 by

UPDATE: McIntyre discovers a serious flaw right away, more upside down Mann world – he writes: In keeping with the total and complete stubbornness of the paleoclimate community, they use the most famous series of Mann et al 2008: the … Continue reading →

Posted in Paleoclimatology | Tagged , , , | 66 Comments

Are Climate Models Realistic? (Now Includes at Least February Data)

Posted on April 8, 2013 by

Guest Post By Werner Brozek, Edited By Just The Facts (Note: If you read my report with the January data and just wish to know what is new with the February data, you will find the most important new things … Continue reading →

Posted in Climate data, measurement, Sea Surface Temperature, Temperature | Tagged , , , , , , , , | 78 Comments

Inverse hockey stick in the lower troposphere – real or not?

Posted on March 25, 2013 by

Bishop Hill via correspondent Gras Albert noted this event early today: I looked through the entire satellite record, and couldn’t find any similar event. That meant it was either unique, or indicative of a technology failure like we witnessed with … Continue reading →

Posted in Climate data, Space, Technology | Tagged , , , , | 56 Comments

Dispelling myths about global warming

Posted on March 25, 2013 by

CO2 did not drive the rapid warming of the 20th century. Story submitted by Stan Robertson The difference between a good idea and a bad idea is often a quantitative matter. For example, many people would think it a good … Continue reading →

Posted in Carbon dioxide | Tagged , , , , | 139 Comments

Monday Mirthiness – Watch the genesis (and retraction) of a smear

Posted on March 18, 2013 by

This is hilarious, I finally got a retraction out of Dr. Michael Mann. The AGW proponents must be reeling from McIntyre’s takedown of Marcott et al, because I watched the most hilarious smear genesis unfold this morning a few minutes … Continue reading →

Posted in Climate ugliness, Humor, Marcott et al proxy paper, Satire | Tagged , , , , | 152 Comments

Marcott’s uptick – a result of proxy sign inconsistency

Posted on March 16, 2013 by

Shades of upside down Tiljander. McIntyre is delving further into the Marcott proxy issue and it looks almost certain now there’s a statistical processing error (selection bias). Steve McIntyre writes: In the graphic below, I’ve plotted Marcott’s NHX reconstruction against … Continue reading →

Posted in Marcott et al proxy paper, Paleoclimatology | Tagged , , , | 56 Comments

Tick, tick, tick – how long will the new Marcott et al hockey stick survive?

Posted on March 15, 2013 by

Steve McIntyre writes of the curious uptick in the 20th century, which doesn’t seem to be rooted in reality, or to have been in Marcott’s PhD thesis: While one expects a difference between NHX and SHX in the Holocene, the … Continue reading →

Posted in Marcott et al proxy paper, Paleoclimatology | Tagged , , , , | 53 Comments

Marcott’s proxies – 10% fail their own criteria for inclusion

Posted on March 13, 2013 by

Note: Steve McIntyre is also quite baffled by the Marcott et al paper, finding it currently unreproducible given the current information available. I’ve added some comments from him at the bottom of this post – Anthony Guest Post by Willis … Continue reading →

Posted in Proxies | Tagged , , , , , , | 128 Comments

Validity of “A Reconstruction of Regional and Global Temperature for the Past 11,300 Years”

Posted on March 11, 2013 by

It seems that Marcott et al isn’t all that it is cracked up to be. Dr. Easterbrook takes a good hard look at the paper. Guest post by Dr. Don J. Easterbrook (Note: Because of the far-reaching implications of the … Continue reading →

Posted in Marcott et al proxy paper, Paleoclimatology | Tagged , , , | 97 Comments

Marcott et al claim of ‘unprecedented’ warming compared to GISP ice core data

Posted on March 8, 2013 by

The very first sentence of the Marcott et al (which is getting heavy press) abstract says: Surface temperature reconstructions of the past 1500 years suggest that recent warming is unprecedented in that time. Okay, let’s have a look at the … Continue reading →

Posted in Marcott et al proxy paper, Paleoclimatology | Tagged , , , , | 116 Comments

Notes on the February Global Temperature Anomaly

Posted on March 6, 2013 by

Guest post by John Kehr With two completed months of the year there is starting to be discussion of how 2013 is shaping up for the annual anomaly.  Several comments around the web have caught my attention as they demonstrate … Continue reading →

Posted in Temperature | Tagged | 268 Comments