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Harig, Christopher
5
Hay, Carling C.
5
Kopp, Robert E.
5
Laytchev, Konstantin
5
M. A. K. Khalil
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Mitrovica, Jerry X.
5
R. A. Rasmussen
5
C. D. Keeling
4
Keeling, Ralph F.
4
T. P. Whorf
4
Bernhard, G.
3
Brunt, Kelly M.
3
Busetto, M.
3
Dutton, E. G.
3
König-Langlo, Gert
3
Lanconelli, C.
3
Larsen, Christopher F.
3
Maturilli, Marion
3
Neumann, Thomas A.
3
Sieger, Rainer
3
Vitale, V.
3
Yamanouchi, T.
3
Blunden, Jessica
2
Booth, C. R.
2
Busetto, Maurizio
2
C. F. Larsen
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C. Lanconelli
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Colton, G.W.
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Dutton, Ellsworth G
2
E. G. Dutton
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54 ENVIRONMENTAL SCIENCES
9
Apr
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Atmosphere
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Aug
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Dec
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Feb
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Infrared Gas Analyzer
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Jan
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Jun
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Mar
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May
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Carbon dioxide
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Alert Canada
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Alert, NWT, Canada
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Annual
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Annual-Fitted
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Atmospheric CO2 Concentration
5
Atmospheric Carbon Dioxide
5
Baring Head
5
Barrow, Alaska
5
Cape Kumukahi
5
Cape Kumukahi Hawaii
5
Cape Matatula, Samoa
5
Carbon Dioxide
5
Christmas Island
5
Flask Sampling
5
In-Situ Sampling
5
Jul
5
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DataCite Metadata Store (German National Library of Science and Technology)
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ESS-DIVE: Deep Insight for Earth Science Data (via DataONE)
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
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Directory of Open Access Journals: DOAJ Articles
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University of Alaska: ScholarWorks@UA
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University of Washington, Seattle: Digital Collections
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Unknown
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Zenodo
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Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
2
Copernicus Publications: E-Journals
2
David Rumsey Historical Map Collection (Cartography Associates)
2
Defense Technical Information Center: DTIC Technical Reports database
2
National Institute of Polar Research Repository, Japan
2
Niedersächsisches Online-Archiv NOA
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University of Groningen research database
2
University of North Texas: UNT Digital Library
2
Washington State University: WSU Libraries Digital Collections
2
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
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Cambridge University Press
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Hathi Trust Digital Library
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IEDA: US Antarctic Program Data Center (via DataONE)
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IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria)
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Institut national des sciences de l'Univers: HAL-INSU
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Journals at the University of Arizona
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NASA Technical Reports Server (NTRS)
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ORA - Oxford University Research Archive
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South Pole
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Antarctic
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Arctic
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Fairbanks
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Palmer Station
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Palmer-Station
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Canada
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Pacific
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Grim
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Neumayer
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Scripps
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Norway
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The Antarctic
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Svalbard
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Dronning Maud Land
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Greenwich
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Svalbard Archipelago
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Byrd
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Amundsen Scott South Pole Station
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Amundsen-Scott
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Argentina
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Northwest Passage
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Austral
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Hallett
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Kum
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Alaska
Antarc*
South pole
Antarctica
65
Barrow
45
Antarctic
33
Arctic
29
Greenland
12
North Pole
11
Ny Ålesund
9
Ny-Ålesund
9
Point Barrow
9
Sea ice
9
Ice
8
Svalbard
8
permafrost
8
Amundsen-Scott
7
Archipelago
7
Brooks Range
7
Cosmonaut sea
7
Dronning Maud Land
7
IPY
7
International Polar Year
7
glacier
7
north slope
7
Ice Sheet
6
Airborne Topographic Mapper
5
Northwest passage
5
Macquarie Island
4
Nome
4
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