cc: "Wolf-Christian Dullo" date: Mon Nov 1 09:57:16 2004 from: Phil Jones subject: Re: Jacek to: "Michael E. Mann" , Jacek Majorowicz Jacek, My name does appear to be down as convenor for CL20. I am not at the moment planning to go. I suggest you contact the other two convenors Wolf-Christian Dullo and Jean Jouzel as one of them may be going. Cheers Phil At 16:58 29/10/2004, Michael E. Mann wrote: HI Jacek, I'm not involved in the organization of the session next year. I don't think Phil Jones is either, but I'm copying this message to Phil to check--there appears to be a mistake in the program. You should check w/ the other conveners of the session, Mike At 12:45 PM 10/29/2004, Jacek Majorowicz wrote: Dear Michael: I have noticed that Jones et al (including you) are organizing a session on paleoclimate in Viena next spring. I wrote an email to all of you CConvenors asking if the paper on regional gst history variations from well temp. inversion would fit in. I have never seen any response. Has my email ever got through? Best regards Jacek [1]http://majorowicz.fateback.com/ ----- Original Message ----- From: [2]Michael E. Mann To: [3]Dr. Jacek Majorowicz Sent: Monday, August 30, 2004 6:02 PM Subject: Re: Jacek Dear Jacek, Thanks very much for sending this. I had a chance to read it over, and it is very interesting--I like the fact that you've extended the estimates back over 1000 years, not just back 500 years (as in the papers by Huang and Pollack). This provides a longer perspective on the recent GST warmth, and some some nice independent confirmation of the basic conclusions from other (proxy and model) evidence that late 20th century warmth is anomalous in at least a millennial context (specifically, in the Arctic region in your analysis). Incidentally, Phil Jones and I published a review paper in "Reviews of Geophysics" earlier this year which provides a pretty up-to-date comparison of the various proxy-based reconstructions and model simulations on this timeframe: Jones, P.D., Mann, M.E., [4]Climate Over Past Millennia, Reviews of Geophysics, 42, RG2002, doi: 10.1029/2003RG000143, 2004. [5]ftp://holocene.evsc.virginia.edu/pub/mann/JonesMannROG04.pdf I would encourage you to send the paper you sent me to Phil Jones (p.jones@uea.ac.uk) and Jonathan Overpeck (jto@u.arizona.edu). They will lead authors on the chapters dealing with these issues in the next IPCC report, and I believe that the authors of the report would find your results very useful. Best regards, Mike At 04:11 PM 8/30/2004, Dr. Jacek Majorowicz wrote: Dear Michael: Do you recall any 20th century N. America warming map which one could use to compare with GST warming (based on well data)? Also, 19-20th century would do. I have a review paper into Reviews into Geophysics going. I will appreciate any suggestions, Attached are some n. wells interpretation. I am attaching proofs so the corrections (like spelling of my name is wrong) are pending. Hope that this will be of interest. I did refer to your work questioning some of the GST SAT tracking in the northern climates. Dr. Jacek Majorowicz Northern Geothermal Email: [6]majorowicz@shaw.ca Phone/Fax: (780)438-9385 Website: [7]http://majorowicz.fateback.com ----- Original Message ----- From: [8]Michael E. Mann To: [9]Dr. Jacek Majorowicz Sent: Thursday, August 28, 2003 11:33 AM Subject: Re: Jacek HI, Thanks for your message Jacek, and for the reprint. I'll look forward to reading it as soon as I have the chance. Re your comment, well I don't believe there is any reason for the fluxes to balance out on decadal timescale or any other timescale, because this isn't really a latent issue effect at all, its an issue of the incoming radiation budget influence the air and ground. The ground doesn't "see" much of the cold winter air cooling in the presence of snow cover because of insulation and reflection of incoming radiation. So the ground never knows about the negative atmospheric cooling that existed above the snow layer. This amounts to a rectification of the seasonal temperature signal, and a loss of information about the extent of winter cooling. Imagine a perfect insulator between ground and air. It wouldn't matter to the ground if air temperatures cooled 1 degree C or 10 degrees C, as long as the ground was insulated. So its an issue of potential loss of information of cold-season temperature variations. Our model analysis bears that out, and I think that Tinjung Zhangs' work is showing the same thing in Eurasian soil temperature measurements. Anyway, will be interesting to continue to discuss. Best regards, mike At 11:21 AM 8/28/2003 -0600, you wrote: Dear Dr. Mann: attached is my paper on the polish history of gst vs. sat . these ones show good agreement unlike in Canada. Poland is also a country with variable snow cover like Canada. on the other hand any major land clearing went through the area in the 15th-18th century so that signal of step like temperature jump is not as significant in the inversion process as in the Canadian situation where some of permanent land change is only half a century old! best regards Majorowicz p.s. read with interest your grl paper. i am still not sure about the influence of freezing -thawing process and latent heat effects. it is true that ground stays at near 0 C when frozen despite much wilder surface temperature changes; however in the anuual deacadal scale shouldnt it all be reflected in the equality of fluxes. while heat is released when moist ground freezes it is taken from the environment when it thaws in the spring. so, on the annual/decadal scale wouldnt these two effects reflect some balance allowing us good judgment on the long term increases or decreases of ground temperature as seen by our well temperature inversion ? p.s. my story on the north i have presented in nice is now in revision for pure and applied geophysics. Lachenbruch's Alaska data inversion is quite different from the canadian north . first one (as noticed by Lachenbruch in his classic paper in science) shows quite late onset of surface warming(20th century). it seems to be much earlier in the Canadian north (arctic islands etc). variability of the warming onset time was also noticed in my 2002 October jgr red paper . ----- Original Message ----- From: [10]Michael E. Mann To: [11]Dr. Jacek Majorowicz Sent: Thursday, May 08, 2003 10:36 AM Subject: Re: Jacek Hi Jacek, Thanks for your message--yes, I too was disappointed that the discussion was not broader--I think that it was a bit of a setup by Hugo to debate our latest work--perhaps that was useful, but it also didn't lead to a very inclusive discussion, and that would have been more helpful from a scientific point of view. your new results sound very interesting indeed, and i look forward to hearing more about them. you can find a reprint of our JGR paper (and also a preprint of my GRL paper w/ Gavin Schmidt modeling GST and SAT differences) here (as downloadable pdf files): [12]http://www.people.virginia.edu/~mem6u/preprints.html comments would be welcome. best regards, mike At 09:11 AM 5/8/2003 -0600, Dr. Jacek Majorowicz wrote: Dear Michel: the discussion in nice France was really exciting. unfortunately my paper on the northern arctic wells did not get any discussion at all and I hope that it was just a result that it came last and people were tired. I have some funding to expend my work on influence of land change on subsurface temperature in time and derived gsth into whole of Canada. other examples include Cuba where depleting jungle for sugar cane plantation had effect. some of gst warming derived from well temperatures are some 4-5 deg. C!!. I am just wondering if you have reprints or the latest .pdf of your j.geoph. res. paper. ? Jacek Majorowicz 105 Carlson Close Edmonton Alberta T6R 2J8 Canada ______________________________________________________________ Professor Michael E. Mann Department of Environmental Sciences, Clark Hall University of Virginia Charlottesville, VA 22903 _______________________________________________________________________ e-mail: mann@virginia.edu Phone: (434) 924-7770 FAX: (434) 982-2137 [13]http://www.evsc.virginia.edu/faculty/people/mann.shtml ______________________________________________________________ Professor Michael E. Mann Department of Environmental Sciences, Clark Hall University of Virginia Charlottesville, VA 22903 _______________________________________________________________________ e-mail: mann@virginia.edu Phone: (434) 924-7770 FAX: (434) 982-2137 [14]http://www.evsc.virginia.edu/faculty/people/mann.shtml ______________________________________________________________ Professor Michael E. Mann Department of Environmental Sciences, Clark Hall University of Virginia Charlottesville, VA 22903 _______________________________________________________________________ e-mail: mann@virginia.edu Phone: (434) 924-7770 FAX: (434) 982-2137 [15]http://www.evsc.virginia.edu/faculty/people/mann.shtml ______________________________________________________________ Professor Michael E. Mann Department of Environmental Sciences, Clark Hall University of Virginia Charlottesville, VA 22903 _______________________________________________________________________ e-mail: mann@virginia.edu Phone: (434) 924-7770 FAX: (434) 982-2137 [16]http://www.evsc.virginia.edu/faculty/people/mann.shtml 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 ----------------------------------------------------------------------------