Archive for the ‘Analysis’ Category

This article caught my eye because Isaac Held stuck his oar in. Talkshop readers will have a field day with this I think.

Researchers show that a canonical view of global warming tells only half the story.
Genevieve Wanucha | Program in Atmospheres Oceans and Climate
November 10, 2014

In classrooms and everyday conversation, explanations of global warming hinge on the greenhouse gas effect. In short, climate depends on the balance between two different kinds of radiation: The Earth absorbs incoming visible light from the sun, called “shortwave radiation,” and emits infrared light, or “longwave radiation,” into space.

Upsetting that energy balance are rising levels of greenhouse gases, such as carbon dioxide (CO2), that increasingly absorb some of the outgoing longwave radiation and trap it in the atmosphere. Energy accumulates in the climate system, and warming occurs. But in a paper out this week in the Proceedings of the National Academy of Sciences, MIT researchers show that this canonical view of global warming is only half the story.

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Rain: Is this cause for concern?

Posted: November 12, 2014 by tchannon in alarmism, Analysis, methodology, weather

A few days ago Paul Homewood picked up an item where the Met Office seem to make a fuss about UK heat and wet, although Robert Ward seems to be the one fussing. Since I have have the precipitation data on hand what do I make of it?

More Misleading Claims From The Met Office” (7th Nov)

This cites Yahoo News.

I’ll ignore the temperature, here is the precipitious matter ‘since records began in 1910 it has been the second wettest.’ [1]
Presumably more than 194 million tons of water dropped on London according to calculations by the British Rainfall Organisation [3]

The Met Office ploy is add the data January through end October and make that a year by year spot value.

Image

2008 110.07
2014 104.47
1927 103.47

Independently reproduced above. Seems a strange measure so lets look some more.

 

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I may be boring folks yet detail is what breaks to understanding. This is rather fun, things fit. 

 

UK extremes

 

Parameter Location Value
Highest maximum temperature Gravesend 14.1 °C
Lowest maximum temperature Pennerley 5.7 °C
Lowest minimum temperature South Newington -2.0 °C
Highest rainfall Redesdale Camp 19.8 mm
Sunniest Leconfield 6.0 hours

Issued at: 2303 on Tue 04 Nov 2014

 

Hourly data, a peak temperature which elsewhere seems to coincide with a short period of high visibility, probably sunshine. But look at the green wind data trace, falling west wind, calm, east wind then resume west. Humidity drops low.  The station is on a tidal estuary.

The estimate tide from various web sites at Gravesend-Broadness was low tide at 16 hours but the PLA chart for Tilbury which is 2km downstream is  0.76 m @  17:10 hrs

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History of Met Office Gravesend-Broadness site

Posted: November 4, 2014 by tchannon in History, Surfacestation

Image

Image OpenStreetMap / Author

New information has appeared so this is based on photographic evidence. The drawings are approximate and simple.

Those who want to look and with access to Google Earth here is a ZIP of Google KMZ files (4kB). Invoke and will go to the image for the date given.
Or
51.464261° 0.310574°

The Met Office station commenced operation during 1996. It is not a full station. I assume it is treated as a minor synoptic station.

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The Catch-22 of Energy Storage

Posted: November 1, 2014 by tallbloke in Analysis, Energy, Maths, wind
Tags:

tallbloke:

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H/T @hockeyschtick1 for this great article on the non-viability of wind/solar as large-scale replacement for fossil/nuclear. Now can we scrap the CCA please?

 

Originally posted on Brave New Climate:

Pick up a research paper on battery technology, fuel cells, energy storage technologies or any of the advanced materials science used in these fields, and you will likely find somewhere in the introductory paragraphs a throwaway line about its application to the storage of renewable energy.  Energy storage makes sense for enabling a transition away from fossil fuels to more intermittent sources like wind and solar, and the storage problem presents a meaningful challenge for chemists and materials scientists… Or does it?


Guest Post by John Morgan. John is Chief Scientist at a Sydney startup developing smart grid and grid scale energy storage technologies.  He is Adjunct Professor in the School of Electrical and Computer Engineering at RMIT, holds a PhD in Physical Chemistry, and is an experienced industrial R&D leader.  You can follow John on twitter at @JohnDPMorgan First published in Chemistry in Australia .

Several recent analyses of the…

View original 1,723 more words

Last day of October 2014 (31/10/2014) was lovely and warm over much of eastern England, particularly the south east. Mostly weak sunshine and a slight southerly wind. The Gravesend site has in the past been the subject of questioning why it is so warm, estuary, not in town.

There was a south wind too in the Cairngorms where the temperature gradually rose all day, with a twist, the wind was rising from 48 mph to 60+ mph, gusted to 84 before last thing the wind shifted and fell. This suggests a general flow.

Image

This confusing plot shows an unusual situation. The highest temperature was recorded at Gravesend, logged by the Met Office as 23.6C, 0.3C above the hour mean. The oddity is this occurred an hour earlier than the other group of stations, or perhaps is an effect of quantisation.

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Reposted from Clive Best’s excellent blog 
Posted on October 23, 2014 by Clive Best
I have noticed that wind power delivered to the Grid is always less than 6 GW, no matter how windy it gets. This was clearly demonstrated on October 21st when wind speeds across the country reached around 50 mph for most of the day. The wind output was simply bumping along continuously below 6 GW. Something fishy is going on – What is it?

winds


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Ex-Environment minister Owen Paterson is tonight delivering the annual GWPF lecture. In it he will say the climate change act should be scrapped. UKIP has been saying this for years and has had a detailed energy policy document out for years detailing better alternatives for a viable mixed energy policy. The full text of his speech has been published at the Spectator. Here’s an except:

The vital importance of affordable energy

owen-patersonBut first, let us consider what is at stake. We now live in an almost totally computer-dependent world. Without secure power the whole of our modern civilisation collapses: banking, air traffic control, smart phones, refrigerated food, life-saving surgery, entertainment, education, industry and transport.

We are lucky to live in a country where energy has been affordable and reliable.

Yet we cannot take this for granted.

While most public discussion is driven by the immediacy of the looming 2020 EU renewables target; policy is actually dominated by the EU’s long-term 2050 target.

The 2050 target is for a reduction in greenhouse gas emissions by 80 percent relative to 1990 levels. The target has been outlined by the European Commission. But it is only the UK that has made it legally binding through the Climate Change Act – a piece of legislation that I and virtually every other MP voted for.

The 2050 target of cutting emissions by 80 percent, requires the almost complete decarbonisation of the electricity supply in 36 years.

In the short and medium term, costs to consumers will rise dramatically, and the lights would eventually go out. Not because of a temporary shortfall, but because of structural failures, from which we will find it extremely difficult and expensive to recover.

We must act now.

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Guest post from Ben Wouters

Geothermal flux and the deep oceans.

To appreciate how the small geothermal flux of ~100 mW/m2 can play a significant role in our climate we’ll take a look at a cross-section of the Pacific in Fig 1.

fig1

Fig 1

A typical temperature profile is given in Fig 2 below

Fig 2

Fig 2

First the profile below ~1000 m. Slowly decreasing temperature with depth, more or less the same for all latitudes. The dark blue layer (~30 C) can be regarded as the top of the cold deep oceans. From 1000 m. upward the temperature increases rapidly, warmest water at the surface in the (sub) tropics. The dark blue layer only reaches the surface at high latitudes (red arrows). All water above this dark blue layer is warmed from above by the sun, either directly or indirectly. This layer also loses its energy again at the surface to the atmosphere, and eventually to space. Solar energy only warms the upper ~1000 m. between ~50N and 55S. How high the surface temperatures will be, depends on the temperature of the deep oceans and how much the sun can warm the upper layer above the deep ocean temperature.

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Guest post from Jeremy Shiers (@JeremyShiers), whose blog is at http://jeremyshiers.com/

Temperatures were 2ºC warmer 5000 years ago according to
archaeological and geological evidence from Skara Brae in Orkneys,
Scotland

Professor Ian Stewart presented the series Making Scotland’s
Landscape
, one program, part 5, focused on historic climate.

I produced the following chart from 3 separate charts shown on the
program, the original charts are shown lower down.

Temperature Scotland 4000BC to 1400AD

It is clear

  1. current temperatures
    are not unusual
  2. there have been a
    number of changes in temperature over the millenia

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Disagree with the Met Office, moi? 

30 September 2014 – Early Met Office figures show this is set to be the driest September across the UK since records began in 1910, with exceptionally low rainfall for many parts of the country.

http://www.metoffice.gov.uk/news/releases/archive/2014/early-september-stats

Using Met Office published data 1910 onwards where I am specifically looking for abnormality taking into account variation through the year and the natural asymmetry of wet and dry. This is a non-trivial task.

 

Region Sept 2014 Z score
East Anglia 85th -1.5
England 21st -2.1
England and Wales 20th -2.1
England E and NE 36th -1.9
England N 17th -2.2
England NW and N Wales 14th -2.4
Engalnd S 42nd -1.9
England SE and Central S 66th -1.6
England SW and S Wales 45th -1.9
Midlands 26th -2.0
Northern Ireland 6th -2.6
Scotland 27th -2.0
Scotland E 54th -1.8
Scotland N 62nd -1.7
Scotland W 16th -2.3
UK 14th -2.3
Wales 28th -2.1

Oh well, my software or method must be defective. Or perhaps it rained a lot between 30th September and 1st October. An age old British tradition of sogg’in in Autumn on the 31st.

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Paul Vaughan has suggested we hold a discussion on bi-decadal climatic variation, which exhibits quasi-cyclic patterns in various datasets. To get the ball rolling, Paul has kindly given some time to producing some very interesting plots which he has introduced across a few recent threads. This posts puts these in one place and acts as an invitation to those interested in a focussed discussion on the topic.

The Bidecadal Oscillation

Is it caused by the solar Hale Cycle as suggested by Tim Channon or is it caused by the velocity of the sun with respect to the solar system barycenter as suggested by Nicola Scafetta?

http://s18.postimg.org/74uty1eix/Bidecadal_SST_Sun_Velocity_Hale_Cycle.png

Bidecadal_SST_Sun_Velocity_Hale_Cycle
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Image

The UK Met Office / Hadley Centre (Met Office) / Climatic Research Unit (UEA) construct and publish global time series for temperature based on published 5 degree gridded. How this is derived from land meteorological station readings and ship board for sea surface temperature is unclear. The gridded to eg. global is a simple (cosine) weighted average which takes into account the variable area of a linear grid representing a sphere.

I have put together maps showing the data counts for decades over a world shore outline. These are provided as vector plots (master work), PDF, or for casual looks, PNG. The results are disturbing and particularly in the light of the Met Office producing 100 different versions of HadSST3. “Each of the following files is a zip archive containing ten realisations of the HadSST3 data set. There are 100 realisations in total.”

Do I detect obfuscation, flapping for distraction?

[update] Roger Andrews has pointed out this work ought to use HadSST2, my mistake. I’m not sure what to do about this, updating the files is not too difficult but is there a material difference? I’ve created new files and am looking at introducing the hadcrut4 data.[update]

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Coal, There’s Just No Alternative

Posted: September 14, 2014 by tchannon in Analysis, Energy, Incompetence, Politics

Tony Thomas mentions he has an opinion piece up on Quadrant about the reality of electricity and human wealth in all the ways not so obvious, but also right on the past cries of environmentalists deeming the undeveloped world must not get wealth.

Thomas discusses US author and energy specialist Robert Bryce

Bryce didn’t discuss the merits of the catastrophic human-caused global-warming hypothesis. He just delineated the irrationality of draconian global and national targets to cut CO2 emissions, given the developing world’s determination to use electricity to lift its people from poverty:

“I’m a resolute agnostic about the climate issue. Tell me CO2 is good, tell me it’s bad. I’m bored with the nastiness.

“The question that too few people are willing to ask is this one: where, how, will we find the energy equivalent of 27 Saudi Arabias and have it all be carbon-free?”

Oh yes, nastiness, a hallmark of forcing others to do your bidding…

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Via GWPF:

Matt Ridley: Whatever Happened To Global Warming?
Date: 05/09/14 Matt Ridley, The Wall Street Journal

whateverGWOn Sept. 23 the United Nations will host a party for world leaders in New York to pledge urgent action against climate change. Yet leaders from China, India and Germany have already announced that they won’t attend the summit and others are likely to follow, leaving President Obama looking a bit lonely. Could it be that they no longer regard it as an urgent threat that some time later in this century the air may get a bit warmer?

In effect, this is all that’s left of the global-warming emergency the U.N. declared in its first report on the subject in 1990. The U.N. no longer claims that there will be dangerous or rapid climate change in the next two decades. Last September, between the second and final draft of its fifth assessment report, the U.N.’s Intergovernmental Panel on Climate Change quietly downgraded the warming it expected in the 30 years following 1995, to about 0.5 degrees Celsius from 0.7 (or, in Fahrenheit, to about 0.9 degrees, from 1.3).

Even that is likely to be too high. The climate-research establishment has finally admitted openly what skeptic scientists have been saying for nearly a decade: Global warming has stopped since shortly before this century began.

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This article is cross posted from Tim’s blog as of interest to some Talkshop readers with a few extra sentences likely to raise discussion. 

August 2014 there was a meteorological gift of both exceptional conditions and good data. What can be learnt?

Three Met Office sites showed a signature of exponential cooling. This requires clear sky and a calm. Given somewhat limited parameter hourly data the following shows the commonality. The computed terminal conditions are shown later in this article.

Image

Benson and Santon Downham data has been normalised to Katesbridge[3], which has the least noisy data or the three.

Achieving a close overlay requires taking earth rotation into account, dusk and dawn move relatively both by geographic location and the peculiar movement throughout the year as night length changes, these do not move together [1]. Fractional delay (less that the sample period) was used to equalize diurnal time. (see the two blog articles here)

Dusk appears to be the important factor, a surprising finding, I assume cooling is time from dusk, dawn terminates cooling.

General information, under essentially calm conditions wind drops for a period during the night then reappears just after dawn. (not shown here)

Temperature normalisation defined is for the cold period, not as accurate for Benson where the better site exposure (more open) led to more wind at times.

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This article is part II  of “A new Lunar thermal model based on Finite Element Analysis of regolith physical properties“,  written primarily by gallopingcamel (Peter Morcombe), edited and prepared for WordPress by Tim Channon.

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Figure 1 (click full size)

Modeling the Moon

A few months ago an analysis of the Moon’s equatorial temperature was posted here using two different types of engineering software. Tim Channon used SPICE circuit analysis software originally developed at Berkeley while I used Quickfield, a finite element analysis program developed by Tor Cooperative, a Russian firm, marketed outside Russia by Tera Analysis. In addition, several detailed comments were received from “br” who used LTSPICE from Linear Technology Inc.

Two very different methods. The results were identical.

Both Quickfield (in Student edition) and LTSPICE are freely available for download for those interested in replication or for further investigation.

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Clams [credit: Wikipedia]

Clams [credit: Wikipedia]

El Niño and its twin La Niña are under the spotlight this year as climate-watchers hunt for signs of expected activity that seems to have gone largely missing in recent years if compared to, say, the 1990s.

Has the strength of these phenomena changed in modern times? Apparently not.

‘The charts created by the research team suggest that the ENSO cycle does not have a predictable cycle and also that it has not been increasing in strength over the course of the Holocene as others have suggested.’

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On 5th August 2014 I archived the US Navy graphic of the track of hurricane Bertha into just a storm. Today is the 10th August 2014 where a storm is about to arrive in the UK with forecast fairly strong winds and rain. [update] Forget to mention, the timing is correct, dot over England was for 18hrs 10th.

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Time for a forecast [credit: Wikipedia]

Time for a forecast
[credit: Wikipedia]

The Alaska Dispatch News reported:

Predictions of Arctic summer ice melt come with lots of uncertainty

http://www.adn.com/article/20140801/predictions-arctic-summer-ice-melt-come-lots-uncertainty

(H/T GWPF Reports)

A few highlights:

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