The world has never seen such freezing heat
in [Design]
|
Prev: Class D audio driver with external mosfets
Next: NE162 mixer: input/output impedance in balanced mode?
From: bill.sloman on 26 Nov 2008 20:56 On 27 nov, 00:51, Eeyore <rabbitsfriendsandrelati...(a)hotmail.com> wrote: > bill.slo...(a)ieee.org wrote: > > Eeyore <rabbitsfriendsandrelati...(a)hotmail.com> wrote: > > > > as we look headed for the coldest winter in decades here in the UK. > > > That's something of a stretch. You are claiming that a little short > > term random noise on the long-term global warming trend invalidates > > classical thermodynamics. > > Oh but the AGWists use noise to support their hypothesis when it suits them. So you claim. You won't be able produce an example of an AGWist actually doing this - you never can - and your own claim is simply silly. -- Bill Sloman, Nijmegen
From: bill.sloman on 26 Nov 2008 21:08 On 26 nov, 19:42, James Arthur <bogusabd...(a)verizon.net> wrote: > Al Bedo wrote: > > bill.slo...(a)ieee.org wrote: > > [regarding orbital variation with feedback] > > >> The point is that we need a healthy dose of positive feedback to make > >> the explanation work and similar positive feedback mechanisms could > >> turn today's barely significant global warming into an end-Permian > >> style global extinction. It isn't a high probability scenario, but we > >> are taling about the only planet we've got. > > > So what feedback are you suggesting? > > > Not ice/albedo feedback of the glacials since that ice > > extended to mid-latitudes where there was enough insolation > > to matter. > > > Not water vapor feedback because that doesn't seem to be occurring. > > > What then? > > He means methane hydrates, stores of methane frozen underseas > (that might be freed if temperatures rise enough). > > Note that by saying "It isn't a high probability scenario", he's > saying it's something but might happen, but isn't certain. > > IOW, "We don't understand, and we don't know. We're guessing." We understand quite bit and know quite a bit. We don't know enough to put particulalry tight numerical constraints on what might happen and when it might happen. The negative carbon isotope ratio spikes around the end-Permian mass extinction do suggest that methane clathrates have let go in the remote past, and contributed to a fairly spectacular mass extinction. -- Bill Sloman, Nijmegen
From: bill.sloman on 26 Nov 2008 21:14 On 26 nov, 19:52, Al Bedo <c...(a)dark.side.of.the.moon> wrote: > James Arthur wrote: > > [Regarding feedbacks] > > > He means methane hydrates, stores of methane frozen underseas > > (that might be freed if temperatures rise enough). > > Since orbitals are similar to the last glaciation, > one could argue that glaciation is a more likely risk. > > So we should be trying to prevent glaciation > rather than warming. According to William Ruddiman, the next glaciation should be well underway already, but we stopped the glaciers in their tracks when we took up agriculture http://en.wikipedia.org/wiki/William_Ruddiman We've now injected more than enough fossil carbon dioxide into the atmosphere to make sure that glaciation isn't going to be a problem for the next thousand years or so. -- Bill Sloman, Nijmegen
From: JosephKK on 26 Nov 2008 23:02 On Wed, 26 Nov 2008 14:04:38 +0000, Eeyore <rabbitsfriendsandrelations(a)hotmail.com> wrote: > > >bill.sloman(a)ieee.org wrote: > >> On 26 nov, 06:22, Eeyore <rabbitsfriendsandrelati...(a)hotmail.com> >> wrote: >> > bill.slo...(a)ieee.org wrote: >> > > I certainly don't command the computing capacity required to run that >> > > kind of model >> > >> > Wouldn't matter if you did. The models are FUCKED ! >> >> You may think so, but - as you demonstrate below - you don't know >> anything about mathematical modelling either. > >I was using mathematical modelling software 20 years ago. MathCad for DOS ! > >Graham Compared to decent thermal modeling for houses mathcad is an incomplete and flimsy tool. I have and use it, it is nice within its area of capability. It is a non-starter for anything like weather or climate models.
From: JosephKK on 26 Nov 2008 23:18
On Wed, 26 Nov 2008 14:11:15 +0000, Eeyore <rabbitsfriendsandrelations(a)hotmail.com> wrote: > > >bill.sloman(a)ieee.org wrote: > >> It's successors might be more interesting - the computers available in >> 1960 weren't all that impressive. I wrote my first program in 1965 for >> Melbourne University's IBM 7040/44 which had 32k of 36bit words of >> core memory, and relied on magnetic tape for mass storage, and cost >> the university a million dollars. > >And you're clearly stuck in some surreal time warp. > >Hey, I programmed on an Elliot Automation 803. And an IBM 360. Then an Epson HX-20 >followed by a BBC- Model B with 128kB of memory (bank switched) and then the >ubiquitous 8051 family. And don't forget the Z80 ! > > >Graham Wuss, i was programming 18 bit and 30 bit computers in the very early 1970s and switched to a 32 bit computer in 1973. I wouldn't buy a PC until the 80386 hit, though i would have considered a 68000 or an NS 16000/32000. I even thought about using an AMD 29000. I would have loved to got my hands on a DG micronova, did get to use a microVAX. And de regur i have used 6502, 6802, 1802, 8051 and others along the way. |