Site: Clive Best

Slant: Sceptic

Active: yes

Recent Articles

Clive Best: Ice Age insights

The discussion on the ‘dust’ theory of ice age termination at Judith Curry brought a couple of other interesting papers to light. This has started me thinking again about how recent deep glaciations terminate. Such glacial cycles apparently now only …

2018-09-19 17:49   Click to comment

Clive Best: GHCN August 2018 temp = 0.69C

Global temperatures for August 2018 were 0.69C based on merging GHCNV3 and HadSST3, and using spherical triangulation. The baseline for temperature anomalies is 1961-1990. The annual average so far (8 months) for 2018 is 0.66C. 2018 is continuing a post …

2018-09-18 14:02   Click to comment

Clive Best: July’s Hadcrut4.6(3D) = 0.65C

My preferred method for calculating the global average temperature anomaly for HADCRUT4.6 is by triangulating the measurements over the surface of a sphere. This gives almost identical results to those of Cowtan & Way but is a far simpler and …

2018-08-30 18:02   Click to comment

Clive Best: The relationship of CO2 to temperature

Is temperature a function of CO2 or is CO2 a function of temperature i.e. Is T=f(CO2) or CO2=f(T) ? The answer according to Richard Betts is both, because increasing CO2 warms the planet but levels in the atmosphere also respond …

2018-08-29 14:50   Click to comment

Clive Best: The Birth of Continents.

This animation of a new Paleo Digital elevation model, appears rather like a foetus developing. Plate tectonics actually ennables life on earth Here is a 3D view of the violent ‘birth’ of India and the Himalayas. and finally the formation …

2018-08-23 21:55   Click to comment

Clive Best: HADCRUT4.6 for June 2018

The CRUTEM4.6 weather station data for June 2018 has just been published, which when combined with the HadSST3 sea surface temperature data forms the global average – HadCRUT4.6. The traditional method for calculating this is by binning all the station …

2018-07-30 08:29   Click to comment

Clive Best: UK Heatwaves and Climate Change

The UK is experiencing a prolonged heatwave which could exceed that of the exceptional 1976 summer. It is an “Endless Summer” – like that surf movie. So is climate change to blame? Climate Change is happening but what that really …

2018-07-27 13:33   Click to comment

Clive Best: Has Gaia really been explained?

I was interested in a new paper which claims to be able to explain the Gaia hypothesis, first proposed by James lovelock, that life stabilises the earth’s climate.  The paper is described in an article in the Conversation. The paper …

2018-07-04 16:01   Click to comment

Clive Best: Spatial rainfall distribution

Rainfall anomalies also have monthly spatial distributions analogous to those for temperature. North Atlantic storms in January 2014 brought flooding to Western England. That month’s distribution shows  that abnormally high rainfall also affected the western coastlines of France, Spain and …

2018-06-20 10:32   Click to comment

Clive Best: Global Rainfall

Has rainfall increased or decreased with rising temperatures? NCDC Daily contains the raw precipitation measurements from about 100,000 weather stations back to 1780. I put my computer  (iMAC-i7) to calculate this , but it took a week of CPU time!  Here …

2018-06-16 11:32   Click to comment

Clive Best: UK Power Generation 2017-18

The balancing of energy supply with demand on the UK National Grid is performed by ELEXON and as a result they provide a live snapshot of the power generated to match that demand  by fuel type. I have been monitored …

2018-06-07 21:22   Click to comment

Clive Best: 19th Century Volcanic Eruptions

There is clear evidence of a cooling effect in the GHCN-Daily data resulting from large volcanic eruptions during the 19th and 18th century.  If an eruption of a similar size to Tambora were to occur today it would (temporarily) cancel …

2018-05-30 11:38   Click to comment

Clive Best: GHCN-Daily Temperature Anomaly Results

Shown below are my new Global land temperature anomalies calculated directly from daily  temperature measurements of over 35300 weather stations (NCDC-Daily) compared to Berkeley Earth. The NCDC-Daily archive extends back to 1762, although coverage then is mostly restricted to central …

2018-05-29 20:20   Click to comment

Clive Best: A new analysis of Global Land Daily temperature data

This post describes my attempt to reproduce global temperatures from scratch. By scratch I mean using all the original  raw temperature measurements from the NCDC daily weather archive without adjustments. The largest accessible archive of raw temperature measurements is the …

2018-04-19 10:13   Click to comment

Clive Best: Tidal effects on the Jet Stream this winter

The “Beast from the East” blast of freezing temperatures resulted from a strong kink in the Jet Stream dragging Siberian air over Europe. This was evident by a sharp drop in the Arctic Oscillation coincident with strong tides over northern …

2018-04-07 17:17   Click to comment

Clive Best: Berkeley Daily Temperature Anomalies

Berkeley Earth have a new analysis of global daily temperature anomalies, which also shows a long term fall in diurnal temperature ranges. I found and plotted the data via Twitter thanks to Robert Rohde ! If anyone is interested, Berkeley …

2018-04-07 13:14   Click to comment

Clive Best: Temperature Anomalies and ‘Abnormalities’

Why do we use temperature anomalies instead of absolute temperatures even when studying small regions like the UK? The last post showed that maximum annual ACORN-SAT  temperatures for Australia show little change since 1910, whereas maximum temperature anomalies did indeed show …

2018-03-31 09:36   Click to comment

Clive Best: Australia is not getting warmer. It is getting less cold !

Maximum temperatures in Australia are on average not increasing at all. Instead an increase in minimum temperatures explains the ~1C warming observed since 1910. All these results are from ACORN-SAT which have already been adjusted and homogenised.  They are the …

2018-03-26 20:05   Click to comment

Clive Best: Australian extreme temperatures are falling

The annual range of temperature extremes in Australia is reducing as the continent warms. The annual temperature range is the maximum recorded temperature for that year minus the minimum recorded temperature. The annual continental average is the area weighted average …

2018-03-22 15:23   Click to comment

Clive Best: Australian Raw temperature results

Homogenisation more often then not increases warming trends. ACORN-SAT is based on 112 stations, many of which are combinations of nearby stations which are then all homogenised.  However there are actually a total 1805 individual stations scattered about Australia, most of …

2018-03-20 10:35   Click to comment


comments powered by Disqus
151