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Petit problème de thermodynamique pour la FARCE :
1) Bangkok est à la même latitude qu’Ouagadougou
2) L’air à Bangkok contient 100x plus de gaz à effet de serre (vapeur d’eau) que l’air à Ouagadougou.
3) Donc Bangkok devrait être beaucoup plus chaud qu’Ouagadougou
4) Eh bah non, tous deux sont à 28°C en moyenne !
5) Pourquoi ? Et Paf le chien.
miniTAX (#101), parce que le CO2 ne produit qu’un forcage global par rapport à la self-saturation des jets streams de la poële à frire.
Ca self-sature l’ufnuf et permet la fonte des glaces du pôle, donc des hivers très très froid en europe et un gradient de température nul sur Ouagadougou.
D’ou l’égalité.
Ca fait sérieux ou bien je reformule sans déconner ?
Sérieux.
Je dois pouvoir produire une explication qui semble plausible.
Faut me laisser un peu de temps.;-)
Murps (#102),
Murps, vous avez là la substance d’une communication à l’IPSL, et peut-être, qui sait, une Thèse ?…
miniTAX (#101), Murps (#102), Papyjako (#103),
Vous oubliez le bidulator !!!
scaletrans (#104),
miniTAX™
Une contribution inattendue au travail d’Akasofu vient de Grant Foster (Tamino) ici.
Ce billet est clairement analysé par Lubos Motl ici.
En bref, il semble fortement y avoir un cycle de moyennes de températures d’environ 66 ans.
Ceci est établi par analyse de Fourier de carottes du lac proglaciaire Agassiz, période de -6000 à -4000 av. J.-C.
La figure la plus spectaculaire est
Le pic principal à la fréquence annuelle 0,0152 correspond à 1/0,0152 = 66 ans.
La permanence de ce cycle et sa ou ses causes font évidemment débat.
Excusez Marot, mais cette courbe de Motl me laisse dubitatif.
En particulier ce pic seulement « double » par rapport à ses voisins me semble bien « fragile » surtout compte tenu de l’extrapolation des températures.
Ca ne serait pas plutôt une conséquence d’une géographie locale du lac ?
(genre barrage glaciaire qui grossit et cède régulièrement)
Je rappelle le travail de Scafetta où on voit très bien le cycle de 60+ ans :
Murps #107 : Le problème est que l’article de Nature par Knudsen et al , commenté par Tamino, puis par Motl, retrouve ce cycle de 60+ ans dans plusieurs forages glaciaires, situés à des distances de plusieurs milliers de km.
Alors, la géographie locale…
Il faut lire l’article de Knudsen et al. Il est encore en accès libre (réf sur le site de Tamino alias Foster Grant).
Knudsen élimine le soleil et lui préfère l’AMO, parce ça ne colle pas avec le cycle de Gleisberg de 88 ans…ce qui n’est pas étonnant.
AMHA, ces gens-là ne lisent pas les articles de leurs collègues.
Marot (#106), Murps (#107)
Complément et Rectification
Le papier original in extenso est ici.
Il apparaît à la lecture qu’il ne s’agit pas du lac proglaciaire Agassiz mais de carotte de glace du glacier Agassiz proche d’Ellesmere (grand nord canadien).
Mea culpa.
L’Union européenne des géosciences vient d’attribuer la médaille Hannes Alfvén, du nom du prix Nobel de physique de 1970 au professeur Syun Ichi Akasofu.
via Lubos Motl.
Marot (#109),
Cela réchauffe … le coeur !
Merci pour l’info Marot.
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