cc: liqx@cma.gov.cn
date: Fri, 19 Oct 2007 15:56:44 +0800
from: =?gb2312?B?JUQ1JUM1JUMwJUYyJUMzJUY0IA==?= <limmy@263.net>
subject: Re:Re:Re:Re: thank you
to: p.jones@uea.ac.uk

   Dear Phil,
   Ok, I attached the series by this emil. Please  find the txt  file, which is the average
   value for each month. (I grided the station numbers into 2.5*2.5 grid boxes by First
   Differnce Method (Tom Peterson) then averged anomalies in the whole country.

   Best

   Qingxiang

     ----- Original Message -----
     From: "Phil Jones" < p.jones@uea.ac.uk >
     To: "%D5%C5%C0%F2%C3%F4" < limmy@263.net >
     Cc: < liqx@cma.gov.cn >
     Sent: 2007-10-18 18:50:13 +0800
     Subject: Re:Re:Re: thank you
      Dear Qingxiang,
          Is it possible to send the numbers, as opposed to the plot?
      Since 1951 will be fine.
      Best Regards
      Phil
     At 03:51 17/10/2007, =?gb2312?B?JUQ1JUM1JUMwJUYyJUMzJUY0IA==?= wrote:

          ----- Original Message -----
          From: "Phil Jones" < p.jones@uea.ac.uk >
          To: "%D5%C5%C0%F2%C3%F4" < limmy@263.net >
          Cc: < liqx@cma.gov.cn >
          Sent: 2007-10-12 17:20:58 +0800
          Subject: Re:Re: thank you
          Dear Phil,
          I have told you the difficulties of doing the monthly series during 1910-2006 of
          average China surface air temperature at present in last email, but I did the series
          since 1951(attachment).
          I hope there will be helpful.
          Best
          Qingxiang Li
          Dear Qingxiang,
          I have been away much of the last 3 weeks,
          but I have managed to get
          someone here to produce a few plots of the data you sent. I am
          attaching 3
          of these plots. The first plot is a summary of the 'China'
          average
          we have produced from the data you sent (the two sets of 40-42
          stations).
          We also used the data for the same stations we had in 1990.
          So there are 4 series on the plot
          Data for 1954-1983 rural and urban sites as we had in 1990
          Data for 1951-2004 rural and urban site as you sent
          All are anomalies from 1954-83 - I need to change this to
          1961-90
          The other two plots show the 'rural' and 'urban' separately
          and
          also plot your unadjusted as well as your adjusted sites. So
          these
          have 3 series on. There is also a line with the count of station
          numbers.
          What this shows to me is.
          1. As I expected - your homogeneity work (whilst good and useful)
          doesn't
          really change the average. It improves individual records,
          but it tends to
          cancel out when a number of stations are averaged.
          2. There is a dramatic warming from mid-1980s - some of which may
          be urban related?
          What I still need to do.
          1. I will produce a series for SST for the S. and E. China sea from
          HadSST2. This
          will not have any 'urban' influence.
          2. An average based on some rural stations in Mongolia and the very
          east of Russia,
          and any sites I can find in the north of Vietnam, Laos and Myanmmar
          ( I'm not
          very hopeful of finding any good sites in these three
          countries).
          One other thing I would like from you. Can you send a 'China'
          average? What
          I need is an average for the whole of the period from say 1910 to
          2006. This would
          be from your adjusted station dataset and would use many more
          stations than
          the 40-42 you have ( and exclude the obvious rural ones as in He et
          al. 2004
          in Theor. Appl. Clim.). Is this possible as a monthly
          series?
          I will also send a couple of powerpoint slides to show you
          why
          homogeneity adjustments average to approximately zero.
          Best Regards
          Phil
          At 04:16 25/09/2007, =?gb2312?B?JUQ1JUM1JUMwJUYyJUMzJUY0IA==?=
          wrote:

          Dear Phil,
          Again I find that the emails from my CMA mail boxes can not get to
          you.
          From attaches please find the data of 42 urban stations and 42 rural
          stations (by your list) and a reference of homogenization of the data. we
          have tested and adjusted the abrupt discontinuities of the data during
          1951-2001, but the following years (2002-2004) has only been quality
          controled and added to the end of the series, but we found the relocation
          during these 3 years have minor effects on the whole series in most of
          the stations.
          I partly agree with what Prof. Ren said. and we have done some
          analysis on the urban heat island effect in China during past years. The
          results are differnt with Ren's. But I think different methods, data, and
          selection of the urban and rural stations would be the most important
          causes of this. So I think it is high time to give some new studies and
          graw some conclusion in this topic. I hope we can make some new
          achives on this both on global scale and in China.
          Best
          Qingxiang

                ----- Original Message -----
                From: "Phil Jones" < p.jones@uea.ac.uk >
                To: "Rean Guoyoo" < guoyoo@yahoo.com >
                Cc: "%D5%C5%C0%F2%C3%F4" < limmy@263.net >, <
                liqx@cma.gov.cn >
                Sent: 2007-09-24 16:25:59 +0800
                Subject: Re: thank you
                Dear Guoyu,
                I think I emailed you from America last week. I am
                away again next week,
                but here this week.
                I do think that understanding urban influences are
                important. I will
                wait for Dr Li Qingxiang to send some data, but there is no
                rush, as I am
                quite busy the next few weeks.
                Best Regards
                Phil
                At 00:59 20/09/2007, you wrote:

                The following message was returned back when I sent via cma site. I
                send it again via this site. I also forwarded this message to Dr, Li
                Qingxiang.
                Regards,
                Guoyu
                Dear Phil,
                Thank you for your message of Sept 11, 2007. I have just been back
                from the US. Sorry for the delayed response.
                I noted the discussion on blog sites. This is indeed a big issue in
                the studies of climate change.
                In the past years, we did some analyses of the urban warming effect
                on surface air temperature trends in China, and we found the effect is
                pretty big in the areas we analyzed. This is a little different from the
                result you obtained in 1990. I think there might be at least three
                reasons for the difference: (1) the areas chosen in the analyses are
                different; (2) the time periods analyzed are obviously varied, and the
                aft-1990 period is seeing a more rapid warming in most areas of China;
                (3) the rural stations used for the analyses are different, and we used
                some stations which we think could be more representative for the
                baseline change.
                We have published a few of papers on this topic in Chinese.
                Unfortunately, when we sent our comments to the IPCC AR4, they were
                mostly rejected.
                It is my opinion that we need to re-assess the urbanization effect on
                surface air temperature records for at least some regions of the
                continents. I am glad that you are going to redo it using the updated
                dataset. I expect you to obtain the new outcome.
                As for the dataset, I believe that Dr. Li Qingxiang could give you a
                hand. He and his group conducted a lot work of detection and adjustment
                of the inhomogeneities in the past years, and the adjusted and the raw
                datasets are all stored and managed in his center. The datasets we used
                are also from his center.
                I'd be happy to discuss some issues with you late, but I would not
                necessarily be as a co-author because my contribution would be rather
                minor.
                Best regards,
                Guoyu
                NCC, Beijing
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                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
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          =======================263¬£µ¨µ==============
          =========
          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
          ----------------------------------------------------------------------------
          =======================263å¤©ä¸é®ï¼ä¿¡èµé®èªä¸ä¸======
          =================

     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
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   Attachment Converted: "c:\eudora\attach\mean_mon_ser(1).txt"

