Tag Archives: Anomalies

That Warmer Feeling

Unisys Weather has implemented a new colour scheme for the sea surface temperature anomaly (SST Anom). I did see some mention of this in comments elsewhere (WUWT?) but didn’t bother to look until MWhite in comments on the previous post … Continue reading

Posted in Images, Mapping, Weather | Tagged , , , , , | 5 Comments

The trouble with anomalies… Part 2

Last week’s post (Part 1)  looked at Reno, SFO and Sacramento, three relatively close-by cities at the same latitude but with varying altitude and distance from the coast. The previous post showed that: The three cities differed in their response … Continue reading

Posted in Climate Cycles, Station Data | Tagged , , , , , , , | 6 Comments

The trouble with anomalies… Part 1

The use of anomalies is the normal defense against any critical assessment of the variability of numbers of stations across the climate record – the so-called ‘station drop-out’. The rationale is that it should not matter if stations are located … Continue reading

Posted in Station Data | Tagged , , , , , , | 4 Comments

No Average Year

This is a video of the anomaly graphs (First Differences method) for all GHCNV3 stations by year generated by Charles Duncan for a previous post. I post them here mostly as a curiosity.

Posted in GHCN V3 Beta, Station Data | Tagged , ,

An indication of the growth of station bias?

[I was tempted to call this "Post Normal Distributions" for reasons that will become apparent, however it wasn't entirely appropriate. ] Guest post by Charles Duncan Anthony Watts’ excellent http://www.surfacestations.org website raises questions over the extent to which station changes … Continue reading

Posted in GHCN V3 Beta, Station Data | Tagged , , | 12 Comments

Climate Parallax

Why different views of the surface temperature record should always be regarded as a good thing. Parallax – noun: the apparent change in the position of an object due to a change in the position of the observer. (Famously used … Continue reading

Posted in Opinion | Tagged , , , , | 6 Comments

Unprecedented Warming?

I’m Confused Update: I’ve now added the speliothem data sent to me by Charles earlier in the week. Guest Post by Charles Duncan The claim is often made that the rate of temperature change the Earth has experienced over the … Continue reading

Posted in Climate Cycles | Tagged , , , , , | 10 Comments

Are all anomalies created equal?

Climate is changing; climate has always changed. It is a chaotic system where local microclimate effects can be strong. How can any global average be sure to represent adequately the local nuances and variations (anomalies)? In the existing input data, … Continue reading

Posted in Climate Cycles, GIStemp, Mapping, Station Data | Tagged , , , | 5 Comments

GIStemp: Plus ça change (plus c’est la même chose).

The more things change, the more they stay the same. GISS reports updates to the surface temperature analysis regularly (here).  In the last year, for example, there has been a change to use of USHCN v2 data for US stations … Continue reading

Posted in GIStemp, Station Data | Tagged , , , , | 6 Comments

Canada – 5: Warming North of the Border

Before moving on from Canada, just one more thing.  Kevin reminded me this evening of two things. Big things. First Canada’s size (second largest country in the Northern Hemisphere) and therefore relative importance in climate terms. So why has it … Continue reading

Posted in Station Data, Trends | Tagged , , | 9 Comments