Subject: Re: Hopefully fixed TMP
Date: Fri, 4 Sep 2009 14:50:20 +0100
I've re-run with the same database used for the previous 2006 run
Is that any better? If not please can you send the traditional multi-
page country plots for me to pore over?
On 3 Sep 2009, at 17:04, Tim Osborn wrote:
> Hi Harry and Phil,
> the mean level of the "updated-to-2008" CRU TS 3.0 now looks good,
> matching closely with the 1961-1990 means of the earlier CRU TS 3.0
> CRU TS 2.1.
> Please see the attached PDF of country mean time series, comparing
> last-year's CRU TS 3.0 (black, up to 2005) with the most-recent CRU
> TS 3.0
> (pink, up to 2008).
> Latest version matches last-year's version well for the most part, and
> where differences do occur I can't say that the new version is any
> than last-year's version (some may be better).
> One exception is the hot JJA in Europe in 2003. This is less
> extreme in
> the latest version. See attached PNG for a blow-up of France in JJA.
> I'm sure some people will use CRU TS 3.0 to look at 2003 in Europe,
> so we
> need to be happy with the version we release.
> Perhaps some hot stations have been dropped as outliers (more than 3
> standard deviations from the mean?)?
> But I'm not sure if that is the reason, since outlier checking was
> used in last-year's version, wasn't it?
> Does the outlier checking always check +-3 SD from 61-90 mean (or
> or does it check +-3 SD from the local mean (30-years centred on the
> value) which would allow for a gradual warming in both mean and
> On Wed, September 2, 2009 6:08 pm, Ian Harris wrote:
>> When you have the time and/or the inclination, please can you run the
>> new TMP output through your IDL thingummajig?
>> Please let me know if you can't access it. I do appreciate your help!
> Dr. Tim Osborn
> RCUK Academic Fellow
> Climatic Research Unit
> School of Environmental Sciences
> University of East Anglia
> Norwich NR4 7TJ, UK
Ian "Harry" Harris
Climatic Research Unit
School of Environmental Sciences
University of East Anglia
Norwich NR4 7TJ