date: Wed, 04 Nov 2009 12:22:48 +0000 from: Said Alsarmi subject: Re: Sohar (Oman) station minimum temperature shifts to: Phil Jones Dear Professor Phil, Thank you so much for your comments. These change points are not present in the maximum temperature series. I agree with you that these are most likely natural shifts. Regards Said Phil Jones wrote: > Dear Said, > I'd be very reluctant accepting these as change points unless you > also see them in the maximum temperature series as well. Also if > there is no evidence in the station history information, then it is > also hard to accept them. > > Cheers > Phil > > > At 11:12 04/11/2009, you wrote: > >> Dear Professor Jones, >> >> I hope this will receive you in health and happiness. I need your >> view in the attached pdf file which is an output of a homogeneity >> test called RhtestV3(published online at >> http://cccma.seos.uvic.ca/ETCCDMI/software.shtml). The test detected >> 2 significant(at 95% confidence level) change points in 1986 and >> 2004 for Sohar station (Oman), the data were monthly minimum >> temperature for the period 1980-2008. >> The ncep and era40 anomaly plots for the same climatology reference >> period show that cold anomalous months with varied intensities >> affected the station region while warming at the end of the >> changepoints period. >> >> Please and if you do not mind could you comment on this station output? >> >> Said AlSarmi >> >> >> >> >> >> >> >> >> >> >> >> Phil Jones wrote: >> >>> Dear Said Hamed, >>> The only data we have is daily precipitation data for Masirah and >>> Salalah. >>> We digitized these in the UK - the data are in the Met Office archives, >>> which are now in Exeter. The originals would have had the other >>> variables, but at the time we were only interested in rainfall data. >>> These data were taken at RAF airfields up to the mid-1970s. >>> I'm attaching the files. I did send these to the authors of the paper >>> you refer to. >>> >>> Best Regards >>> Phil >>> >>> >>> At 19:37 25/02/2009, you wrote: >>> >>> >>>> Dear Professor Jones, >>>> >>>> My name is Said AlSarmi from Oman. I am a PhD student at Oxford University >>>> aiming to do some work on Oman climate variability and change. If >>>> you remember >>>> I met you in Delhi (India) in GCOS workshop September 2005. >>>> >>>> I seek your help in providing actual observed data or metadata >>>> related to Oman. >>>> I understand that Climate extremes indices workshop in Turkey (October 2005) >>>> had used daily data for 2 Omani stations from your department. >>>> >>>> Regards >>>> >>>> -- >>>> Said Hamed AlSarmi >>>> DPhil Student >>>> School of Geography and Environment >>>> Oxford University >>>> >>>> >>> 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 > ---------------------------------------------------------------------------- > >