date: Wed, 16 May 2007 11:27:52 +0100 from: Sandy.Harrison@bristol.ac.uk subject: Re: cru ts2.1 to: Phil Jones Hi Phil, We corresponded some time ago about the need for an updated version of the gridded time series data sets going through to 2006. We are using TS2.1 for our historical veg runs, and this finishes in 2002 -- whereas it would be nice to see what we predict for recent years. I guess this is what will constitute TS3.0 .......and I'm glad to hear that this will be lodged at BADC and updated regularly. Still it would be good to know when we could expect this to be on-line. And I apologise up-front for nagging you about this -- and especially if the gridded data set is already available and I've missed it -- its just that this is such a valuable resource !! Cheers, sandy Quoting Phil Jones : > > Sandy, > Not quite sure what you mean here. There is the 2006 > temperature estimate on the main CRU web site. It is also > in Ch 3 of the AR4 of WG1 - that can now be downloaded > (see below). > > Once Harry finishes all the work on CRU TS 3.0, he will > install it all at BADC. They will then run the updates every > 6 months, so they will be able to run July-Dec 06 immediately. > They will be able to do Jan-Jun 07 about Aug/Sep time. > > I'll then write a paper on the dataset. > > Cheers > Phil > > > We are very pleased to be able to tell you that the final checks and > > layout corrections to our SPM, TS and Chapters are now complete. As a > > result we are making the final versions of the Preface, SPM, TS, all > > Chapters, and Annexes (Glossary, List of authors, List of reviewers, > > List of acronyms) publicly available from the WG1 home page ( > http://ipcc-wg1.ucar.edu/ ) today. The supplementary material (for > those chapters that have it) is nearly complete and will be added > shortly. > > > At 09:31 16/05/2007, you wrote: > >Thanks for this Phil ! Any news of the CRU update to 2006 ? > >S > > > > > > > >Quoting Phil Jones : > > > > > > > > Sandy, > > > Here's the two New et al papers from 1999 and 2000. > > > 0.1mm is quite high for GCM/RCM precip as it is for > > > a largish box. > > > > > > Cheers > > > Phil > > > > > > > > > At 11:06 15/05/2007, SP Harrison, Geographical Sciences wrote: > > > >Thanks for this prompt response Harry. > > > >I'm afraid that I could not access the New et al paper -- > access > > > >denied -- so if you could email me a pdf I'd be grateful. > > > >The 0.1 threshold sounds very low for most GCMs, so we may have > to > > > >play around with this -- but it gives me a starting place. > > > > > > > >Cheers, > > > >Sandy > > > > > > > >--On 14 May 2007 17:25 +0100 Ian Harris > wrote: > > > > > > > >>Hi Sandy, > > > >> > > > >>Please see: > > > >> > > > >>New, M., M. Hulme and P. Jones (1999). "Representing > twentieth- > > > century > > > >>space-time climate variability. Part I: Development of a > 1961-90 > > > mean > > > >>monthly terrestrial climatology." Journal of Climate 12: > 829-856. > > > >> > > > >>It's available as a PDF here: > > > >> > > > >>http://www.ouce.ox.ac.uk/~mnew/research/publications/ > > > >>new_et_al_20th_climate_part1_JoC.pdf > > > >> > > > >>On page 832 they discuss the definition of a 'wet day' - the > > > decision is > > > >>to go with 0.1 mm. > > > >> > > > >>However, do bear in mind that the CRU TS 2.1 'rd0' variable is, > in > > > part, > > > >>derived from monthly precipitation - where the relationship to > > > daily > > > >>rain day definition is obviously more convoluted! > > > >> > > > >>Our local precipitation expert tells me that, in effect, 'any' > > > >>precipitation may be used to define a rain day. I think this > is > > > taking > > > >>advantage of rain being measured to one decimal place! > > > >> > > > >>Hope that helps, > > > >> > > > >>Harry > > > > > > > > > > > > > > > >---------------------- > > > >Professor Sandy P. Harrison > > > >University of Bristol > > > >School of Geographical Sciences > > > >University Road > > > >Bristol BS8 1SS > > > >UK > > > >Sandy.Harrison@bristol.ac.uk > > > > > > > >PA - Katie Pellicci > > > >Katie.Pellicci@bristol.ac.uk > > > > > > Prof. Phil Jones > > > Climatic Research Unit Telephone +44 (0) 1603 592090 > > > School of Environmental Sciences Fax +44 (0) 1603 507784 > > > University of East Anglia > > > Norwich Email p.jones@uea.ac.uk > > > NR4 7TJ > > > UK > > > > ---------------------------------------------------------------------- > >------ > > > > > > > > Prof. Phil Jones > Climatic Research Unit Telephone +44 (0) 1603 592090 > School of Environmental Sciences Fax +44 (0) 1603 507784 > University of East Anglia > Norwich Email p.jones@uea.ac.uk > NR4 7TJ > UK > ---------------------------------------------------------------------- ------ > > > >