From: Bill Sloman on
On Nov 26, 9:18 pm, dagmargoodb...(a)yahoo.com wrote:
> On Nov 26, 5:26 pm,Bill Sloman<bill.slo...(a)ieee.org> wrote:
>
> > James Arthur thinks that climate models can't predict any more than a
> > fortnight ahead before they blow up. Oddly enough they can, but
> > weather models can't.
>
> If I ever wrote that, it was a mistake. But I don't believe I ever
> did. (But since you keep saying it, and Joerg lives in Oregon, it
> must be true.)

You said it all right. You seem to have - very wisely - requested that
your post was not to be archived, and have managed to contain your
outrage at being caught making a fool of yourself until the original
evidence had evaporated.

> > On Sun, 22 Nov 2009 07:08:17 -0800 (PST), dagmargoodb...(a)yahoo.com
> > wrote:

<snip>

> As a second measure of global climate models (GCM), we know from
> actual life how poorly the models predict El Nino, or hurricanes, or
> other near-term phenomena that depend on accurate understanding of
> real temperature, deep ocean currents, or other quantities critical to
> long-term projections (if those are even possible), but which are not
> known well enough to make even short-term predictions.

> As a 3rd measure of GCM, before you graced s.e.d. with your inquiries,
> I related that I got that same info (above) from one of the persons
> *responsible* for one of the main climate models. That person said
> GCM are important and useful tools in understanding climate, and for
> making predictions as far as several weeks into the future. Beyond
> that, says (s)he, the models quickly diverge uselessly from reality.

James Arthur doesn't know the difference between a global climate
model, which predicts over a span of year and a global weather model
which falls to pieces in about two weeks.

http://en.wikipedia.org/wiki/Butterfly_effect


http://www.ornl.gov/info/ornlreview/rev28_2/text/cli.htm

> I'd have to ask the person who writes them exactly how far in the
> future GCMs go these days before diverging uselessly into chaos, but
> IIRC they gave some useful, broad indications as much as a few months
> in advance. Not accurate, but enough.

James Arthur "improving" what he remembers.

> And it was the same expert GCM worker who said GCMs were completely
> useless beyond a few months, because they diverge, and specifically,
> are completely inapplicable and unreliable over even a year, much less
> the decades-to-centuries they're being used for.

It was a few weeks on the 22nd November. Marvellous how getting caught
with your pants down "improves" your memory.

> Of course you can see that easily, independently, if you just look at
> the models, see how incomplete they are, how rudimentary our
> understanding of critical processes is, how loose the parameters are,
> how many arbitrary and unexplained factors they apply, and so forth.

Not having spent years working on the models, I doubt very much that I
could see anything of the sort. I had enough trouble with the much
simpler simulation I wrote in 1968 to model the chemical reaction in
the reaction cell I used in my Ph.D. work.

If James Arthur can produce this model which he claims to know so much
about we could - of course - test this hypothesis, but since neither
of us has spent our professional careers improving climate models our
opinions are unlikely to be even useful, let alone decisive.

> Or look at how well the climate models predicted the current cooling
> transient--they didn't. In fact they predicted more and more heat and
> hurricanes, didn't they? And we were supposed to brace ourselves for
> those, to spend money and prepare, but they never came. The models
> were wrong.

The models aren't precise, and they aren't designed to to produce
accurate predictions over periods of a few years. They failed to
predict the current slowing in the rate of global warming because
didn't allow for the movement in the ocean circulation that the Argo
project is only now beginning to telling us about.

The excursion away from the smooth and continuous heating strawman
prediction that James Arthur is trying to set up is small, of the
order of a tenth of a degree or so, and of the order of the noise on
the global temperature record over the last century.

This degree of deviation from reality doesn't make them wrong, merely
less precise than than the denialist press would like, and it
certainly doesn't invalid the longer term prediction.

> Or just do an error-budget analysis. The AGW contribution alleged
> from CO2 is, well, not even clear. A range of estimates from ~0.25 to
> 1 W/m^2 out of roughly 300W/m^2 has been offered. (That wide an
> uncertainty band is pretty pathetic on its face, isn't it?)

It might be if it had been offered by someone who knew what they were
talking about. These are the sorts of numbers that Christopher
Monckton comes up with

http://www.altenergyaction.org/Monckton.html#sec7

More reliable sources seem to be able to come up with a narrower
range.

http://atoc.colorado.edu/~seand/headinacloud/?p=204

gives a figure of 1.66 W/m², with a range between 1.49 and 1.83 W/m².

This ties up with

http://www.esrl.noaa.gov/gmd/aggi/

They don't give nice simple numbers, but they do derive their numbers
from the measured behaviour of the atmosphere which does constrain the
numbers to within about +/-10%.

And you have to keep in mind that forcing depends on the other gases
in the atmosphere. Some IR absorbtion lines overlap, and pressure
broadening makes individual absorbtion lines wider. It is all
predictable but it means that total forcing is averaged over a lot of
rather different situations.

> The uncertainty over the contribution of clouds alone swamps even
> the highest figure by nearly two orders of magnitude.

Says who? Another one of these people whose advice you seem to have
trouble remembering with any precision?

> And yet you'd tell me you know for a fact that man-made CO2 is beyond
> any doubt the one, most important, overriding factor?
>
> Yes, you would.

And I'd be right. Your capacity for creative scepticism verges on
denialism, and you can't - or won't - identify your sources, so your
credibility is totally shot.

--
Bill Sloman, Nijmegen

From: Don Klipstein on
In article <7nb1fqF3l78fsU1(a)mid.individual.net>, Joerg wrote in part:

>As has been discussed here before, there
>has for example been homesteading and farming in areas of Greenland that
>are now under a thick layer of ice. Of course that is an inconvenient
>truth for warmingists. Bill might claim that Exxon-Mobil has gone there
>in the dead of night, drilled holes, dropped some Viking tools and
>artefacts down those holes and then poured water back into them :-)

It was a claim of Eeyore that thick ice now covers where the vikings
settled. I have yet to see this actually established, and I have dug up
photos of at least part of the settlement areas being green in the summer
in recent decades. Nearly all of the settlement areas are ice-free in the
summer lately according to maps of snow/ice cover.

- Don Klipstein (don(a)misty.com)
From: Don Klipstein on
In <504bec29-d5f2-4faf-814c-9133a1a225b0(a)c3g2000yqd.googlegroups.com>,
Bill Sloman wrote in part:

>On Nov 27, 10:43�am, Joerg <inva...(a)invalid.invalid> wrote:
<I snip>

>> Here in Northern California people look at their water bills, they see
>> drought rates being charged more and more often. Warmingists predicted
>> we'd be swamped with precipitation by now. Didn't happen.
>
>Isn't happening at the moment. Presumably the Northern Pacific
>Multidecadal Oscillation is giving you dry phase,

There are other processes that will be affected by global warming. For
one thing, the warming has been predicted by much of the models so far to
warm the Arctic more than elsewhere, and so far the Arctic has warmed more
than the world as a whole has.

This will decrease temperature contrast between the Arctic and the
tropics, and that temperature contrast is the main driving force in
extratropical cyclones of the kind shown on weather maps. Rainfall other
than either convective in nature or from tropical weather systems may not
increase much in the Northern Hemisphere, and could become spottier or
shift from an area used to the rain to an area that is not.

However, I see precipitation pattern shifts so far being mostly from
periodic factors, such as the Atlantic Multidecadal Oscillation (roughly
65 year period), a loosely linked Pacific one that I merely suspect
exists, and the Pacific Decadal Oscillation (period around half that of
the "multidecadal" stuff).

>> Then they look at their heating bills. Amounts of required fuel rising,
>> for example we went from 2 cords to 4 cords. So it ain't getting warmer.
>> We would never again buy a house with a pool around here.
>
>At the moment. Presumably the Northern Pacific Multidecadal
>Oscillation is giving you cooler air from further north than it used
>to (carrying less water vapour). In due course it will probably give
>warmer wetter weather, with an added extra-global warming bonus.

I would rather suspect that someone having fuel consumption double is
either getting out of a rut of a few warm winters or into a rut of a few
cold ones, or got more sensitive to cold due to advancing age or need to
cut calorie intake to avoid clogging of arteries.

Maybe something reminding me of location where home heating fuel needed
such an increase would be useful - I can dig up weather records for the
nearest similar-altitude official weather station similarly situated as
far as major mountain ranges go, or a few stations of wunderground.com.
That would tell us what temperature trend has been - at that specific
little region of Northern California.

(I have a bit of impression that the location in question is east rim of
the Central Valley ENE of Sacramento - any correction/clarification?
How about elevation? - that may matter in local or regional weather and
climate issues.)

- Don Klipstein (don(a)misty.com)
From: John Fields on
On Fri, 27 Nov 2009 00:38:11 -0800 (PST), Bill Sloman
<bill.sloman(a)ieee.org> wrote:

>On Nov 27, 2:44�am, John Fields <jfie...(a)austininstruments.com> wrote:
>> On Thu, 26 Nov 2009 15:18:18 -0800 (PST),Bill Sloman
>>
>>
>>
>> <bill.slo...(a)ieee.org> wrote:
>> >On Nov 26, 7:35�pm, Jan Panteltje <pNaonStpealm...(a)yahoo.com> wrote:
>> >> On a sunny day (Thu, 26 Nov 2009 10:07:13 -0800 (PST)) it happenedBill Sloman
>> >> <bill.slo...(a)ieee.org> wrote in
>> >> <6e3552a1-ae05-4a2c-835f-9f245f6d0...(a)m25g2000yqc.googlegroups.com>:
>>
>> >> >> Without the [fossile] energy companies there would be no media, no energy=
>> >> >,
>> >> >> as your car does not run on electricity (yet).
>> >> >> Without those machines, used to build cities, roads, transport goods, the=
>> >> >re would be no civilisation
>> >> >> and not even internet, and no printing material, no paper, some paper man=
>> >> >ufacturers have their own power plants.
>>
>> >> >And if we keep on digging up fossil carbon and burning it, all these
>> >> >nice things will go away again.
>>
>> >> >> Been there.
>> >> >> Now wake up from your green dreams.
>>
>> >> >An ironic appeal, since it comes from someone who clearly doesn't know
>> >> >what he is talking about.
>>
>> >> mm, why do you say that of everybody except your comic book scientists?
>>
>> >I don't say it about everybody, but there are a number of people who
>> >post here on subjects that they know very little about, and they quite
>> >often post total nonsense.
>>
>> ---
>> Like about being able to extract energy from a varying magnetic field
>> surrounding a conductor by wrapping a solenoid around the conductor?
>
>Joel Koltner was making a joke. The smiley should have told you that.

---
He wasn't making a joke, he was being humorous in his presentation, you
wretch.

But, whether he was making a joke or not is immaterial, since I _proved_
my point by experimentation and presented the data and method for anyone
who cared to replicate the experiment to do so.

You, however, refused to acknowledge the results of the experiment as
supporting my position, even though you hadn't done the experiment
yourself and tried to impugn my work by claiming it as irrelevant
because it responded to a "joke".

So far, you're the only joke I've responded to here and you're certainly
no scientist, Sloman; all you are is a lonely, doddering old man who
can't stand to be wrong and will try all sorts of chicanery to "shoot
the messenger" in order to keep from having to admit to being unhorsed.

You're an utter disgrace and you should be ashamed of yourself.

JF
From: John Fields on
On Tue, 24 Nov 2009 00:43:51 -0800 (PST), Bill Sloman
<bill.sloman(a)ieee.org> wrote:
>
>Your scepticism is nether humble nor yours. You pick up neatly
>packaged chunks of scepticism from your frieindly neighbourhood
>denialist propaganda machine and regurgitate them here.


> Jahred Diamond's
>book "Collapse" makes it pretty clear that the leaders of a failing
>society will have their attention firmly fixed on maintaining their
>status within that society - in your case, your status as a successful
>businessman - right up to the point where it starts collapsing around
>their ears.

---
Seems to me that your accusation that Larkin here regurgitates
propaganda he's picked up elsewhere is PKB.

JF