Category Archives: LSAT

UPDATED: Do the Adjustments to Land Surface Temperature Data Increase the Reported Global Warming Rate?

Posted on April 24, 2016 by Bob Tisdale

This is an update of the post published a week ago here (WattsUpWithThat cross post is here). That earlier post included “raw” unadjusted data based on an outdated version of the NOAA GHCN dataset. This updated post includes annual land … Continue reading →

Posted in LSAT | 26 Comments

Do the Adjustments to Land Surface Air Temperature Data Increase the Global Warming Rate?

Posted on April 16, 2016 by Bob Tisdale

Quick Answer:  Over the long term, the answer is yes, and the differences between datasets are striking. Over shorter terms, the answer depends on the data supplier. INTRODUCTION This is the second in a 2-part series of blog posts.  We examined … Continue reading →

Posted in LSAT | 3 Comments

November 2013 Russian “Hotspot” – Alarmists Are Overlooking Something

Posted on December 20, 2013 by Bob Tisdale

UPDATE:  Corrected the typo in Figure 3. 1988 now correctly reads 1989. # # # There’s lots of blogosphere chatter about the warm temperatures in Russia in November 2013.  In their global State of the Climate Report this month, NOAA … Continue reading →

Posted in LSAT, Model-Data Comparison LSAT | 2 Comments

Models Fail: Scandinavian Land Surface Air Temperature Anomalies

Posted on July 2, 2013 by Bob Tisdale

UPDATE:  I’ve added a comment by Marcel Crok to the end of the post. #### The climate models being used by the IPCC for their upcoming 5th Assessment Report show little skill at being able to simulate a number of … Continue reading →

Posted in LSAT, Model-Data Comparison LSAT, Uncategorized | 11 Comments

Model-Data Comparison: Australia Land Surface Air Temperatures & Anomalies

Posted on June 27, 2013 by Bob Tisdale

UPDATE:  Corrected Figures 2 through 6. UPDATE 2: Corrected the color-coding in the title block of Figure 4. (Thanks to blogger cassandraclub for noticing it.) UPDATE 3: I removed the word Anomalies from Figures 2, 3 and 4. And I’ve … Continue reading →

Posted in Climate Model Problems, LSAT, Model-Data Comparison LSAT | 9 Comments

Model-Data Comparison: Alaska Land Surface Air Temperatures

Posted on June 27, 2013 by Bob Tisdale

Mainstream media and climate alarmist websites have been publishing a lot of nonsense about record and near-record surface temperatures in Alaska over the past few weeks. Near-record? Yup. Near-record. On June 25th, Sophia Rosenbaum penned the NBC News article Alaska … Continue reading →

Posted in Climate Model Problems, LSAT, Model-Data Comparison LSAT | 12 Comments

On Muller et al (2013) “Decadal variations in the global atmospheric land temperatures”

Posted on June 18, 2013 by Bob Tisdale

I received an email yesterday morning advising me that Muller et al (2013) had been published. (Thanks, Marc.) The title of the paper is “Decadal variations in the global atmospheric land temperatures”. The abstract is here and a preprint version … Continue reading →

Posted in Atlantic Multidecadal Oscillation, LSAT, PDO | 6 Comments

A Preliminary Look at Compo et al (2013)

Posted on April 8, 2013 by Bob Tisdale

The recent paper Compo et al (2013) is titled “Independent confirmation of global land warming without the use of station temperatures”. It’s in the preprint phase, and of course it’s paywalled. The abstract is here. It reads: Confidence in estimates … Continue reading →

Posted in CAGW Proponent Arguments, LSAT | Leave a comment

The Contiguous U.S. Surface Air Temperature Data Through 2012 – Is the Recent Warming Trend Unusual?

Posted on January 15, 2013 by Bob Tisdale

UPDATE:  Fixed the date of the second trend period on Figure 3. It now reads the correct year. UPDATE 2:  For those visiting because of the Tamino’s recent (misdirection) post, refer to my response to it here. ################## There’s going to be a press conference … Continue reading →

Posted in Climate Assessment Report Faults, LSAT | 8 Comments

Blog Memo to James Hansen Regarding GISS Southern Hemisphere Land Surface Temperature Data

Posted on August 16, 2012 by Bob Tisdale

Date: August 16, 2012 Subject: Southern Hemisphere GISS LOTI Land Surface Temperature Anomaly Data From: Bob Tisdale To: James Hansen – GISS Dear James: I discovered what appear to be an atypical upward step and a recent abnormal increase in … Continue reading →

Posted in LSAT | 27 Comments