Tree Rings and Climate: Some Recent Developments

Another interesting finding is that N-Scan exhibits a substantially larger pre-industrial (pre 1900) millennial cooling trend (around -0.31C/1000yr) than a tree ring width (TRW) based summer temperature reconstruction from the same trees. The authors interpret this finding as indicating that TRW reconstructions may be unable to recover millennial-timescale temperature trends owing to non-biological impacts on growth and limitations of detrending procedures used to separate climatic and non-climatic growth components. This seems a plausible conclusion, arrived at through a thoughtful and elegant case study. Yet the article extrapolates quite a bit, in terms of its conclusions regarding proxy-based temperature reconstructions more generally. The authors make much of the importance of long-term radiative forcing due to the changes in the earth’s orbit for millennial timescale...

Full article: http://www.realclimate.org/index.php/archives/2012/07/tre...

Tweets

@Climate_Change » 20 Jul '12, 4am
Tree Rings and Climate: Some Recent Developments: by Michael E. Mann, Gavin Schmidt, and Eric Steig Update 7/12/... [link]
@talli » 19 Jul '12, 9pm
@UncleChachi @dangerroom You want data? Here’s plenty of data: [link]
@MichaelEMann » 19 Jul '12, 1am
@andrewjlockley Ummm, yes. See this piece we wrote about it on #RealClimate (and also the "update" links at the top): [link]
@wunderground » 12 Jul '12, 8pm
@Dean4Storms Actually, the media is getting this one wrong, check out what the scientists have to say about it: [link]
@WunderAngela » 12 Jul '12, 2am
Illuminating post as usual by [link] on recent tree ring research: [link] @MichaelEMann
@JaneKilthei » 12 Jul '12, 12am
@tomfletcherbc science check "@MichaelEMann: NS title("Tree rings suggest Roman world...warmer than thought")is bogus. [link]"
@MichaelEMann » 11 Jul '12, 8pm
RT @jorge_salazar: "It’s been a tough few months for tree-rings" [link] new #climate study goes out on a limb via @MichaelEMann
@jorge_salazar » 11 Jul '12, 8pm
"It’s been a tough few months for tree-rings" [link] new #climate study goes out on a limb via @MichaelEMann
@MichaelEMann » 11 Jul '12, 1pm
@Revkin NS title ("Tree rings suggest Roman world...warmer than thought") is bogus. Study only reflects ARCTIC SUMMER! [link]
@MichaelEMann » 11 Jul '12, 1pm
@NewScientist See #RealClimate ("Tree Rings & Climate..Recent Developments"): Solid study but implications overstated [link]
@joabbess » 10 Jul '12, 11am
@richardabetts In response to your pointing at Esper et al. (2012) [link]
@carbonbrief » 09 Jul '12, 2pm
What's been happening with tree rings and climate? @RealClimate covers some recent developments: [link]
@greenexistence » 09 Jul '12, 11am
Tree Rings and Climate: Some Recent Developments: RealClimate: by Michael E. Mann, Gavin Schmidt, and Eric Steig... [link]
@AGW_Prof » 08 Jul '12, 8pm
Tree Rings and Climate: Some Recent Developments [link] "Skeptics" will miss the point of these latest studies.
@tehabe » 08 Jul '12, 7pm
Neues von den Baumringen und dem Klimawandel (eng) mit Michael Mann u.a. [link]
@cwharlow » 08 Jul '12, 6pm
RT @BoraZ: Tree Rings and Climate: Some Recent Developments [link]
@MichaelEMann » 08 Jul '12, 5pm
We comment on new @NatureClimate study "Orbital forcing of tree-ring data" at #RealClimate: [link]
@4589roger » 08 Jul '12, 5pm
RT @MichaelEMann: We comment on recent tree-ring studies at #RealClimate "Tree-Rings and Climate: Some Recent Developments" [link]
@MichaelEMann » 08 Jul '12, 5pm
We comment on recent tree-ring studies at #RealClimate "Tree-Rings and Climate: Some Recent Developments" [link]
@Revkin » 11 Jul '12, 1pm
RT @MichaelEMann: @Revkin NS title ("Tree rings suggest Roman world...warmer than thought") is bogus. Study only reflects ARCTIC SUMMER! [link]
@bencubby » 11 Jul '12, 1pm
RT @MichaelEMann: @Revkin NS title ("Tree rings suggest Roman world...warmer than thought") is bogus. Study only reflects ARCTIC SUMMER! [link]
@earwulf » 10 Jul '12, 4am
RT @RealClimate: Tree Rings and Climate: Some Recent Developments [link]
@acronymrequired » 09 Jul '12, 7pm
RT @RealClimate: Tree Rings and Climate: Some Recent Developments [link]
@climatestate » 09 Jul '12, 6pm
Tree Rings and Climate: Some Recent Developments [link]
@Pascale_Palmer » 09 Jul '12, 8am
Tree Rings and Climate: Some Recent Developments [link]
@uppsalainit » 08 Jul '12, 11pm
RT @RealClimate: Tree Rings and Climate: Some Recent Developments [link]
@RealClimate » 08 Jul '12, 10pm
Tree Rings and Climate: Some Recent Developments [link]
@Beautiful_Ring » 08 Jul '12, 10pm
Tree Rings and Climate: Some Recent Developments [link]
@DRTucker » 08 Jul '12, 10pm
Tree Rings and Climate: Some Recent Developments [link]
@NatureClimate » 08 Jul '12, 9pm
RT @MichaelEMann: We comment on new @NatureClimate study "Orbital forcing of tree-ring data" at #RealClimate: [link]
@guertin » 08 Jul '12, 8pm
RT @BoraZ: Tree Rings and Climate: Some Recent Developments [link]
@DrDudkin » 08 Jul '12, 8pm
RT @BoraZ: Tree Rings and Climate: Some Recent Developments [link]
@BoraZ » 08 Jul '12, 6pm
Tree Rings and Climate: Some Recent Developments [link]
@leHotz » 08 Jul '12, 6pm
RT @MichaelEMann: We comment on recent tree-ring studies at #RealClimate "Tree-Rings and Climate: Some Recent Developments" [link]
@ferwen » 08 Jul '12, 5pm
Tree Rings and Climate: Some Recent Developments [link]
@Geoblogfeed » 08 Jul '12, 5pm
Tree Rings and Climate: Some Recent Developments [link]
@carbonmeme » 08 Jul '12, 5pm
Tree Rings and Climate: Some Recent Developments @RealClimate [link]
@AdamInCascadia » 08 Jul '12, 5pm
RT @MichaelEMann: We comment on recent tree-ring studies at #RealClimate "Tree-Rings and Climate: Some Recent Developments" [link]