Presentation by Dr. Josefino Comiso Wednesday November 9 2011The TAKUVIK Joint International Laboratory will be presently a seminar entitled The Changing Sea Ice Cover and Primary Productivity in the Arctic by Dr. Josefino C. Comiso, a leader in the field of Polar Research and a specialist in satellite monitoring of oceans and sea ice. Dr. Comiso will address the change of ice cover in the Arctic Ocean resulting from global warming, and will present the impact of this change on marine ecosystems, especially on organic production. The conference will be hosted by Dr. Marcel Babin, Holder of the Canada Excellence Research Chair in Remote Sensing of the Canada's New Arctic Frontier.
Wednesday November 9 2011, 15h30, in the auditorium (1168) of the Pavillon d'Optique Photonique (2375, rue de la Terrasse), adjacent to Pavillon Alexandre Vachon, Université Laval.
Refreshments will be served during the informal discussion period after the presentation.
Pay parking is available close to the venue.
For more information : Marie-Hélène Forget, marie-helene.forget@takuvik.ulaval.ca, 418-656-2131 ext. 2777
The Changing Sea Ice Cover and Primary Productivity in the Arctic
Josefino C. Comiso
NASA Goddard Space Flight Center, Greenbelt, MD, USA 20771
Average surface temperature in the Arctic as inferred from satellite thermal infrared data has been observed to be increasing at the rate of about 0.6 degree Celsius per decade during the last 30 years confirming expected amplification of globalsignals in the polar regions. The impact of warming on the Pan-Arcticregion is strongly manifested by the decline of sea ice by about -4% per decade in the region for the period 1979 to 2010 but for the period from 1996 to 2010, the rate of decline has become more negative at -8% per decade, indicating an acceleration in the decline. A more drastic decline of -13% per decade for the perennial sea ice area during the 1979 to 2010 period is also observed. The perennial ice consists mainly of the thick ice floes that usually survive the summer melt and are the mainstay of the Arctic ice cover. Although a slight recovery occurred for three years following the abrupt decline in 2007, the area of the perennial ice cover in 2011 was slightly lower than the record low in 2007 suggesting a continuation of the decline. Moreover, the thick component of the perennial ice, called multiyear ice (or ice that survives two summers) as observed during winter, is declining at an even stronger rate of about -17% per decade suggesting a possible disappearance of the summer ice in the foreseeable future. The subsequent increase in ice-free ocean surface in the Arctic basin is expected to cause significant changes on the primaryproductivity of the region. Using near-concurrent ocean colour data from 1998 to 2011, high phytoplankton concentrations are observed in the shallowshelf regions during the summer period. These regions that are expected to have abundant nutrients and iron and are the highly productive areas. Sea ice is expected to play a key role in the process because meltwater from sea ice is lighter than sea water thereby forming a stable layer at the surface that serves as an ideal platform for photosynthesis. The recently uncovered, deep ocean regions, however, show relatively low plankton concentration likely due to the lack of nutrients and iron. Overall, the net primary productivity of the region is generally low because of the low productivity of the deep ocean regions and the relatively brief period of summer when the surface ocean is ice-free. Techniques for retrieving geophysical parameters from satellite data and associated errors will be discussed.
viaDebra Christiansen-StoweCoordonnatrice adjointe
Chaire d'Excellence en Recherche du Canada sur la télédétection de la nouvelle frontière Arctique du Canada
Unité mixte internationale Takuvik,
Université Laval,
Pavillon Alexandre-Vachon
1045, avenue de la Médecine
Québec, (Québec) G1V 0A6
Canada
téléphone : 418-656-2131 #5193
télécopieur : 418-656-2339
Courriel ...... debra.christiansen-stowe@takuvik.ulaval.ca
Monday, October 31, 2011
The Changing Sea Ice Cover and Primary Productivity in the Arctic
Friday, October 28, 2011
Appel de communications AUCEN 2012 - Call for Papers ACUNS 2012
Pour diffusion immédiate
Le comité organisateur de la 10e conférence nationale des étudiants en études nordiques de l'AUCEN lance son premier appel de communications pour la conférence des étudiants qui aura lieu les 1er, 2 et 3 novembre 2012 à Val-d'Or, Québec, Canada. Nous encourageons tous les étudiants en études nordiques à soumettre une communication pour cette conférence dont le thème principal est « Nikan*: L'avenir du Nord ».
Pour de plus amples informations sur la conférence, visitez notre site Internet :http://www.uqat.ca/sce2012/.
Merci de noter que nous attendons les propositions de communication par courriel à sce2012@uqat.ca avant le 2 mars 2012.
*Nikan signifie « l'avenir, le futur, aller vers l'avant » en langue anicinape (algonquine). En utilisant ce terme dans le titre de la conférence, nous voulons souligner qu'elle aura lieu en territoire anicinape et que les enjeux sociaux, culturels et autochtones y auront une place de choix.
For immediate release
The organizing committee of the 10th National Student Conference for Northern Studies of the ACUNS has released the first call for papers for the student conference to be held from November 1 to 3, 2012 in Val-d'Or , Quebec, Canada. We encourage students who are conducting Northern Studies to submit the abstract (paper) for this conference, which has you theme is "Nikan*: The Future of The North".
For further information about the conference, please visit our Website at: http://www.uqat.ca/sce2012/.
Please note that the abstract should be sent by email at sce2012@uqat.ca before March 2 , 2012.
*Nikan means "the future, to go forward " in the Anicinape (Algonquin) language. It was included in the conference title because we want to emphasize that the conference will be held on Anicinape territory and that aboriginal, social, and cultural issues will have a prominent place.
Au nom du comité organisateur / On behalf of the organizing committee,
Suzy Basile,
Étudiante au doctorat en sciences de l'environnement / Environmental Sciences Ph.D Student
Université du Québec en Abitibi-Témiscamingue
675, 1re Avenue, Val-d'Or (Québec) J9P 1Y3, Canada
Téléphone (phone): 1-819-874-8728 (# 6336)
Télécopie (fax): 1-819-825-5361
Sans frais (toll free) : 1-866-891-8728
P N'imprimer que si nécessaire - Print only if you must
Avis sur la protection et la confidentialité des informations
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Warning on protection and confidentiality of information
The information contained in this e-mail is confidential and protected in accordance with the applicable laws and regulations. Its content is intended specifically for the recipient(s) to whom it is addressed. It is therefore prohibited to distribute or to disclose the content. If you receive this communication by error, please destroy it and notify us as soon as possible. Thank you.
Wednesday, October 26, 2011
Canadian Northern Studies Trust Awards Program/Fiduciarie canadienne d'études nordiques
From: ACUNS Awards <awards@acuns.ca>
Date: 2011/10/26
Subject: Canadian Northern Studies Trust Awards Program/Fiduciarie canadienne d'études nordiques
Please find the attached awards poster in French and English, advertising the awards available through the Canadian Northern Studies Trust for 2012-2013.
More information, as well as guidelines and application forms can be found at www.acuns.ca
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Veuillez trouver l'annonce (en français et anglais) des bourses offertes par la Fiduciaire canadienne d'études nordiques pour 2012-2013.
Renseignements, formulaires de demandes et autre information peuvent être trouvés au www.aucen.ca
Heather Cayouette
Program Manager/Gérante des programmes
Association of Canadian Universities for Northern Studies (ACUNS)
Association universitaire canadienne d'études Nordiques (AUCEN)
17 York St., Suite 405
Ottawa, ON K1N 9J6
Tel: (613) 562-0515
Fax: (613) 562-0533