date: Fri, 02 Nov 2007 14:22:14 +0000
from: Clare Goodess <C.GoodessatXYZxyz.ac.uk>
subject: Re: Fwd: anthropogenic heat!
to: Mark McCarthy <mark.mccarthyatXYZxyzoffice.gov.uk>
Thanks for the information and papers - all very helpful.
I agree it would be good to meet in the New Year. I have a couple of
trips in January, but week beginning 7 January is possible, then week
beginning 28 January or next couple of weeks (beginning 4/11
Feb). You're very welcome to Norwich and it would be an opportunity
to meet other people - though its rather a long haul. Another
possibility could be to meet in London. If we called it a SCORCHIO
meeting, then it should be possible to get a free meeting room at the MRC.
Just one clarification - the Tyndall London work I was referring to
is actually different to the LUCID project. But all the projects are
requiring the same kind of inputs, so hopefully there can be some flexibility.
Best wishes, Clare
At 09:35 02/11/2007, you wrote:
> It was good to meet you in Manchester. Thank you for the preprint
>paper, it looks very relevant.
> Regarding London, Rich Betts is a stakeholder in the LUCID project for
>London too. I will ask Rich about any specific involvement we have. The
>model runs will most certainly include London, so exactly the same data
>as for Manchester and Sheffield would be available (and for any other UK
>or European city for that matter). The main difference will be the
>magnitude of the anthro heat-flux which is currently prescribed to be
>the same for all city locations. Claire Smith has sent me some anthro
>heat-flux estimates for Manchester of 7-11Wm-2, which are smaller than
>equivalent estimates I made for London of 11-30Wm-2 (reaching about
>50Wm-2 or more for Westminster). If Claire's estimates are right, then
>the anthro heat flux may not be such a critical part of Manchester's
>surface radiation budget (although this ignores possibly important
>seasonal and diurnal cycles).
> Jim Hall tried to get in touch with Rich and I before chatting to Phil,
>but unfortunately Rich was away, and I was at the Scorchio meeting so we
>missed each other.
> The 9 surface types in the land surface scheme are:
>Each surface type having its own prescribed parameters for albedo,
>roughness length, canopy height, water capacity, leaf area etc. For more
>details see Essery et al. 2003 (attached). For details on the urban
>parameterisation see Best 2005 (attached). I assume you would want 1.5m
>temperature on tiles (surface T on tiles also available). Precip will be
>the same for all tiles across a grid box, but specific and relative
>humidity will vary.
>Early next year should be a good starting point. Perhaps we could
>arrange a meeting (perhaps at UEA?) to discuss the science needs for
>both Scorchio and CIRCE in the new year.
>On further reflection following the meeting I think the first couple of
>runs should provide us with sufficient data to assess the sensitivity of
>land-use change before instigating the third run. The uhi in the model
>is actually not strongly dependent upon size of the urban area (although
>any feedback to the wider atmosphere will be). Therefore the uhi on
>tiles in neighbouring (or near-by) grid boxes could be very similar even
>if one grid is 80% urban and the other only 20% urban. But the grid box
>temperature of the 20% urban case would be regulated by the vegetated
>area and therefore have a lower grid-box temperature than the near-by
>80% urban grid box. Hopefully that makes some kind of sense, but I can
>explain better once I have some data.
>On Thu, 2007-11-01 at 19:08 +0000, Clare Goodess wrote:
> > Hi Mark
> > It was good to meet you in Manchester last week.
> > This is the preprint on energy balance in Marseille which I mentioned.
> > Phil Jones, Colin Harpham and I met today to discuss the UEA SCORCHIO
> > work, and also some proposed work on London as part of the Tyndall
> > Cities programme led by Jim Hall. I think that Jim has spoken to
> > Richard Betts about this, but don't know if you are aware. Anyway,
> > CRU has a small amount of money from Tyndall to do similar work for
> > London as SCORCHIO. Stuart Barr from Newcastle is involved in both
> > projects - and Phil had a discussion with him and Jim in Newcastle
> > last week. Anyway, my understanding from Jim is that the Hadley
> > Centre will also be able to provide outputs for London.
> > I know that you are producing a document outlining the planned
> > simulations and their outputs. For us, it would be useful to have a
> > list of the 9 (?) land-surface types used in the tiling scheme. What
> > we would like for the weather generator output is daily temperature
> > and precipitation time-series for the different land-types in the
> > 'city squares' i.e., for Manchester, Sheffield, London.
> > Colin and Phil are currently very tied-up with UKCIP08 weather
> > generator work, but we would ideally like to be able to do some
> > proper SCORCHIO work (i.e., moving on from data compilation) early
> > next year. From our discussions in Manchester, it seems that you
> > would like to have a least one run done by then.
> > At some point, we need to talk about CIRCE, but I think this can wait
> > until the SCORCHIO runs are sorted out.
> > Best wishes, Clare
> > >Date: Wed, 24 Oct 2007 16:26:53 +0200
> > >X-Kuleuven: This mail passed the K.U.Leuven mailcluster
> > >From: Matthias Demuzere <Matthias.demuzereatXYZxyz.kuleuven.be>
> > >User-Agent: Thunderbird 126.96.36.199 (Windows/20070728)
> > >To: Clare Goodess <C.GoodessatXYZxyz.ac.uk>
> > >Subject: anthropogenic heat!
> > >X-Virus-Scanned: by KULeuven Antivirus Cluster
> > >
> > >Dear Clare,
> > >
> > >In attach you can find the manuscript I have been writing on thermal
> > >roughness lentghs and thermal admittance over Marseille, making an
> > >estimate of the anthropogenic heat. Maybe it can be of interest?
> > >It is revised and submitted, I will let you know as soon as I find
> > >out about the (hopefully) final version!!
> > >
> > >Cheers!
> > >Matthias
> > >
> > >--
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> > >
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> > >
> > >
> > >
> > Dr Clare Goodess
> > Climatic Research Unit
> > School of Environmental Sciences
> > University of East Anglia
> > Norwich
> > NR4 7TJ
> > UK
> > Tel: +44 -1603 592875
> > Fax: +44 -1603 507784
> > Web: http://www.cru.uea.ac.uk/
> > http://www.cru.uea.ac.uk/~clareg/clare.htm
>Mark McCarthy Climate Impacts Scientist
>Met Office Hadley Centre for Climate Change,
>Fitzroy Road, Exeter, EX1 3PB
>Tel: +44(0)1392 884672
>Fax: +44(0)1392 885681
Dr Clare Goodess
Climatic Research Unit
School of Environmental Sciences
University of East Anglia
Tel: +44 -1603 592875
Fax: +44 -1603 507784