Que nous disent-les archives géologiques du CO2 et du climat ?

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Détails bibliographiques
Publié dans:	Géosciences No 3
Auteur principal:	Nehlig, Pierre.
Support:	Article de revue
Langue:	Français
Publié:	2006.
Sujets:	Articles de périodiques
Résumé:	Notre climat a connu par la passé d'important changements même si l'histoire géologique indique que pendant plus de la moitié de l'histoire de la Terre, les oscillations thermiques moyennes ont été relativement faibles. Le recours aux géosciences sur de très longues périodes permet de reconstituer l'histoire géologique du CO2, et ses lien avec les paléoclimats et l'importance capitale des gaz à effet de serre dans l'évolution du climat terrestre. Cette remontée dans le temps permet de mieux mettre en relief le parallélisme entre le réchauffement climatique récent et l'augmentation du CO2 dans l'atmosphère.
Lien:	Dans: Géosciences Autre support: Que nous disent-les archives géologiques du CO2 et du climat ?

+ d'infos
Résumé:	Notre climat a connu par la passé d'important changements même si l'histoire géologique indique que pendant plus de la moitié de l'histoire de la Terre, les oscillations thermiques moyennes ont été relativement faibles. Le recours aux géosciences sur de très longues périodes permet de reconstituer l'histoire géologique du CO2, et ses lien avec les paléoclimats et l'importance capitale des gaz à effet de serre dans l'évolution du climat terrestre. Cette remontée dans le temps permet de mieux mettre en relief le parallélisme entre le réchauffement climatique récent et l'augmentation du CO2 dans l'atmosphère.
Description matérielle:	p. 6-11.
ISSN:	1772-094X

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// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return true; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data) { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data); }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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Que nous disent-les archives géologiques du CO2 et du climat ?

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