cc: gabi.hegerl@ed.ac.uk, "Zwiers,Francis [Ontario]" , caetano@noc.soton.ac.uk, p.jones@uea.ac.uk date: Mon, 03 Sep 2007 15:22:04 +1000 (EST) from: David Karoly subject: Re: Extreme indices advice to WGCM to: "Zhang,Xuebin [Ontario]" Hi, Sorry for the delay in getting involved in this exchange. First, Gabi Hegerl is going to the WGCM meeting and will be trying to represent the interests of ETCCDI in a very busy agenda at WGCM, as well as climate change detection and attribution interests etc. We had already had a brief exchange at IDAG and WGCM about archiving daily data and extremes indices from any new WGCM coordinating modelling experiments. I agree with Xuebin that there are concerns about the software used by some groups, as well as the need to think some more about a small number of changes to the standard indices to be calculated on a monthly, as well as an annual basis. I am sure that Gabi will represent the ET interests very well. Best wishes, David -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Prof David Karoly School of Earth Sciences University of Melbourne, VIC 3010, AUSTRALIA ph: +61 3 8344 4698 fax: +61 3 8344 7761 email: dkaroly@unimelb.edu.au ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ On Sat, September 1, 2007 10:56 am, Zhang,Xuebin [Ontario] wrote: > Hi, Gabi and Francis > > I agree with your ideas. One suggestion is perhaps we should ask the > modelling groups to use a standard package to compute the idices. I think > we could modify what we have, to cvompute only those that we want. > > Cheers > Xuebin > Sent from my BlackBerry > > ----- Original Message ----- > From: Gabi Hegerl > To: Zwiers,Francis [Ontario] > Cc: Nico Caltabiano ; David Karoly > ; Phil Jones ; Zhang,Xuebin > [Ontario] > Sent: Fri Aug 31 10:18:15 2007 > Subject: Re: Extreme indices advice to WGCM > > Hi all, I just had a chat with Francis, it sounds good to both propose > to store daily data and some monthly indices of extremes. The modelling > groups might find it easier to send the indices, but the IDAG group, for > example, is already asking for some daily data. > > Gabi > >> >> Also, we might want to make some suggestions for what kind of >> information we would like to collect to enable the analysis of >> extremes in the far tails of the distribution. We collected 20-year >> slices of daily data for that purpose last time around - which did >> turn out to be very useful - but we might want to consider if we >> should do this differently this time. Asking for daily data is onerous >> for modelling groups (high volumes of data involved) but allows >> flexibility in analysis - e.g., affectionadoes of using either annual >> maxima or peaks-over-threshold approaches can both have at the data, >> whereas the possibilities are more limited if we ask modellers to >> archive only, say, monthly or annual extremes. >> >> Cheers, Francis >> >> Francis Zwiers >> Director, Climate Research Division, Environment Canada >> 4905 Dufferin St., Toronto, Ont. M3H 5T4 >> Phone: 416 739 4767, Fax 416 739 5700 >> >> >> >> ------------------------------------------------------------------------ >> *From:* Nico Caltabiano [mailto:caetano@noc.soton.ac.uk] >> *Sent:* August 31, 2007 7:51 AM >> *To:* David Karoly >> *Cc:* Phil Jones; Zhang,Xuebin [Ontario]; Zwiers,Francis [Ontario]; >> Gabi Hegerl >> *Subject:* Extreme indices advice to WGCM >> >> Dear David et al. >> >> Hope all is well. >> >> WGCM is meeting this coming week. I think you won't be attending the >> meeting but I saw Gabi's name on the list of participants. >> >> At the last ETCCDI meeting, we've discussed that we should provide >> advice to WGCM on indices that should be calculated on a possible >> effort of model runs to the next IPCC. We surely won't have time to >> provide a proper input to WGCM now (I apologise for not starting this >> email exchange earlier). However I think we should send them a message >> saying that we're startin g this discussions and will feed them during >> inter-sessions. If they want to propose something in the meantime, I >> think this would be ok. >> >> Perhaps Gabi could take this message to WGCM? >> >> Your thoughts on this are welcome. >> >> Regards >> Nico >> >> /-----------------------------------/ >> /Antonio Caetano Caltabiano/ >> /International CLIVAR Project Office/ >> /National Oceanography Centre, Southampton/ >> /Waterfront Campus, European Way/ >> /Southampton, SO14 3ZH, UK / >> / >> / >> /TEL: +44-(0)23-80596207/ >> /FAX: +44-(0)23-80596204/ >> /SKYPE: nico_caltabiano/ >> / >> / >> /Climate Variability and Predictability | //http://www.clivar.org/ >> >> /World Climate Research Programme | //http://wcrp.wmo.int/ >> >> >> >> /This e-mail (and any attachments) is confidential and intended solely >> for the use of the individual or entity to whom it is addressed. Both >> NERC and the University of Southampton (who operate NOCS as a >> collaboration) are subject to the Freedom of Information Act 2000. >> The information contained in this e-mail and any reply you make may >> be disclosed unless it is legally exempt from disclosure. Any material >> supplied to NOCS may be stored in the electronic records management >> system of either the University or NERC as appropriate./ >> / >> / >> >> >> > > > -- > Dr Gabriele Hegerl > School of GeoSciences > The University of Edinburgh > Grant Institute, The King's Buildings > West Mains Road > EDINBURGH EH9 3JW > Phone: +44 (0) 131 6519092, FAX: +44 (0) 131 668 3184 > Email: Gabi.Hegerl@ed.ac.uk > >