For mer interessant stoff om forklaringsproblemet (og bortforklaringene og parameterflyttingen) rundt "the hiatus" (oppvarmingspausen) har Judith Curry lagt ut
et spørsmål om "How long is the pause?", og siterer først Rupert Darwall:
With 39 explanations and counting, and some climate scientists now arguing that it might last yet another decade, the IPCC has sidelined itself in irrelevance until it has something serious to say about the pause and has reflected on whether its alarmism is justified, given its reliance on computer models that predicted temperature rises that have not occurred.
Saftig kost her, altså!
Curry kommenterer dette slik:
The statement by Rupert Darwall concisely states what is at stake with regards to the â??pause.â?? This seriously needs to be sorted out. Here are two recent papers that contribute to setting us on a path to understand the pause.
De to nye paperne hun viser til er fra Ross McKitrick og Lovejoy:
http://judithcurry.com/2014/09/01/how-long-is-the-pause/#more-16779
Currys kommentar til McKitrick, som "propose a method for estimating the duration of the hiatus that is robust to unknown forms of heteroskedasticity and autocorrelation (HAC) in the temperature series and to cherry-picking of endpoints":
I find this paper to be very interesting. I canâ??t personally evaluate the methods, although I understand the importance of the heterskedacity an autocorrelation issues. The big issue with length of the pause is comparison with climate model predictions; I would like to see the climate model simulations analyzed in the same way. I would also like to see the HadCRUT4 results compared with Cowtan and Way and Berkeley Earth. I also seem to recall reading something about UAH and RSS coming closer together; from the perspective of the pause, it seems important to sort this out.
Currys kommentar til Lovejoy, som hevder at vi bare snakker om en naturlig variasjon på ~0.4C:
I like Lovejoyâ??s general approach, but convincingly rejecting a centennial scale giant fluctuation requires more robust paleo proxy reconstructions. Lovejoy identifies a magnitude of the natural fluctuations of ~0.4C, which is the largest such estimate Iâ??ve seen.
et spørsmål om "How long is the pause?", og siterer først Rupert Darwall:
With 39 explanations and counting, and some climate scientists now arguing that it might last yet another decade, the IPCC has sidelined itself in irrelevance until it has something serious to say about the pause and has reflected on whether its alarmism is justified, given its reliance on computer models that predicted temperature rises that have not occurred.
Saftig kost her, altså!
Curry kommenterer dette slik:
The statement by Rupert Darwall concisely states what is at stake with regards to the â??pause.â?? This seriously needs to be sorted out. Here are two recent papers that contribute to setting us on a path to understand the pause.
De to nye paperne hun viser til er fra Ross McKitrick og Lovejoy:
http://judithcurry.com/2014/09/01/how-long-is-the-pause/#more-16779
Currys kommentar til McKitrick, som "propose a method for estimating the duration of the hiatus that is robust to unknown forms of heteroskedasticity and autocorrelation (HAC) in the temperature series and to cherry-picking of endpoints":
I find this paper to be very interesting. I canâ??t personally evaluate the methods, although I understand the importance of the heterskedacity an autocorrelation issues. The big issue with length of the pause is comparison with climate model predictions; I would like to see the climate model simulations analyzed in the same way. I would also like to see the HadCRUT4 results compared with Cowtan and Way and Berkeley Earth. I also seem to recall reading something about UAH and RSS coming closer together; from the perspective of the pause, it seems important to sort this out.
Currys kommentar til Lovejoy, som hevder at vi bare snakker om en naturlig variasjon på ~0.4C:
I like Lovejoyâ??s general approach, but convincingly rejecting a centennial scale giant fluctuation requires more robust paleo proxy reconstructions. Lovejoy identifies a magnitude of the natural fluctuations of ~0.4C, which is the largest such estimate Iâ??ve seen.