G
Geir O. Braathen
Researcher at United Nations
Publications - 58
Citations - 3302
Geir O. Braathen is an academic researcher from United Nations. The author has contributed to research in topics: Polar vortex & Stratosphere. The author has an hindex of 30, co-authored 58 publications receiving 3050 citations. Previous affiliations of Geir O. Braathen include World Meteorological Organization & Norwegian Institute for Air Research.
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Journal ArticleDOI
Prolonged stratospheric ozone loss in the 1995–96 Arctic winter
Markus Rex,Neil R. P. Harris,Peter von der Gathen,Ralph Lehmann,Geir O. Braathen,E. Reimer,Alexander Beck,Martyn P. Chipperfield,Reimond Alfier,Marc Allaart,Fiona M. O'Connor,Horst Dier,Valery Dorokhov,H. Fast,Manuel Gil,Esko Kyrö,Zenobia Litynska,I. S. Mikkelsen,Mike G. Molyneux,Hideaki Nakane,Justus Notholt,Markku Rummukainen,Pierre Viatte,John C. Wenger +23 more
TL;DR: In this article, the authors reported the occurrence of the highest recorded chemical ozone loss over the Arctic region during the unusually cold 1995-96 Arctic winter. And they observed that ozone loss at some altitudes was observed long after the last exposure to PSCs.
Journal ArticleDOI
Observational evidence for chemical ozone depletion over the Arctic in winter 1991–92
Peter von der Gathen,Peter von der Gathen,Markus Rex,Markus Rex,Neil R. P. Harris,Neil R. P. Harris,Diana Lucic,Bjørn M. Knudsen,Geir O. Braathen,Hugo De Backer,R. Fabian,H. Fast,Manuel Gil,Esko Kyrö,I. S. Mikkelsen,Markku Rummukainen,Johannes Stähelin,Costas A. Varotsos +17 more
TL;DR: In this paper, the results of a new approach to calculate chemical ozone destruction rates that allows us to compare ozone concentrations in specific air parcels at different times, thus avoiding the need to make assumptions about ozone/tracer ratios.
Journal ArticleDOI
Validation of UARS Microwave Limb Sounder Ozone Measurements
Lucien Froidevaux,William G. Read,T. A. Lungu,R. E. Cofield,Evan Fishbein,D. A. Flower,Robert Jarnot,B. P. Ridenoure,Z. Shippony,Joe W. Waters,James J. Margitan,I. S. McDermid,R. A. Stachnik,G. E. Peckham,Geir O. Braathen,Terry Deshler,Jack Fishman,David J. Hofmann,S. J. Oltmans +18 more
TL;DR: In this paper, the authors describe the validation of ozone data from the UARS Microwave Limb Sounder (MLS) at frequencies near 205 and 183 GHz, and compare the retrieved 205-GHz ozone profiles in the middle-to lower stratosphere to ozonesonde measurements at a wide range of latitudes and seasons.
Journal ArticleDOI
State of the Climate in 2013
Jessica Blunden,Derek S. Arndt,Kate M. Willett,A. Johannes Dolman,Dale F. Hurst,Dale F. Hurst,Jared Rennie,Peter Thorne,Markus G. Donat,Robert Dunn,Craig S. Long,John R. Christy,Jeannette Noetzli,Hanne H. Christiansen,Hanne H. Christiansen,Mauro Gugliemin,Vladimir E. Romanovsky,Nicolai I. Shiklomanov,Sharon L. Smith,Lin Zhao,David A. Robinson,Mauri Pelto,Carl Mears,Shu Oeng Ben Ho,Liang Peng,Junhong Wang,Russell S. Vose,Kyle Hilburn,Xungang Yin,Michael C. Kruk,Andreas Becker,Michael J. Foster,Steven A. Ackerman,Andrew K. Heidinger,B. C. Maddux,Martin Stengel,Hyuanjun Kim,Taikan Oki,Matthew Rodell,Don P. Chambers,James S. Famiglietti,Wouter Dorigo,Daniel Chung,Robert Parinussa,Christoph Reimer,Sebastian Hahn,Y. Y. Liu,Wolfgang Wagner,Rochard A.M. de Jeu,Christoph Paulik,Guojie Wang,Rob Allan,Chris K. Folland,Chris K. Folland,Isabelle Tobin,Paul Berrisford,Robert Vautard,Tim R. McVicar,David P. Kratz,Paul W. Stackhouse,Takmeng Wong,P. Sawaengphokhai,Anne C. Wilber,Shashi K. Gupta,Norman G. Loeb,Kathy Lantz,Kathy Lantz,Edward J. Dlugokencky,B. D. Hall,Stephen A. Montzka,Geoff S. Dutton,Geoff S. Dutton,Jens Mühle,James W. Elkins,Angela Benedetti,L. Jones,Johannes W. Kaiser,Johannes W. Kaiser,Johannes W. Kaiser,J.-J. Morcrette,Samuel Remy,Mark Weber,Wolfgang Steinbrecht,J A Ronald van der,Melanie Coldewey-Egbers,Vitali Fioletov,Stacey M. Frith,Diego Loyola,J. D. Wild,Sean M. Davis,Sean M. Davis,Karen H. Rosenlof,Owen R. Cooper,Owen R. Cooper,Jerry Ziemke,Johannes Flemming,Antje Inness,Shaun Quegan,Phillipe Ciais,Maurizio Santoro,Bernard Pinty,Nadine Gobron,Guido R. van der Werf,Michele L. Newlin,M. C. Gregg,Yan Xue,Zeng-Zhen Hu,Arun Kumar,Viva Banzon,Thomas M. Smith,Thomas M. Smith,Nick Rayner,Gregory C. Johnson,John M. Lyman,Joshua K. Willis,Timothy P. Boyer,John I. Antonov,John I. Antonov,Simon A. Good,Catia M. Domingues,Nathan Bindoff,Nathan Bindoff,Lisan Yu,Xiangze Jin,G. S.E. Lagerloef,Hsun Ying Kao,James Reagan,Claudia Schmid,Ricardo A. Locarnini,Rick Lumpkin,Gustavo Goni,Kathleen Dohan,Molly O. Baringer,Gerard McCarthy,Matthias Lankhorst,David A. Smeed,Uwe Send,Darren Rayner,William E. Johns,Christopher S. Meinen,Stuart A. Cunningham,Torsten Kanzow,Eleanor Frajka-Williams,Jochem Marotzke,Silvia L. Garzoli,Silvia L. Garzoli,Shenfu Dong,Shenfu Dong,Denis Volkov,Denis Volkov,Will Hobbs,Mark A. Merrifield,Philip R. Thompson,Eric Leuliette,R. Steven Nerem,Ben Hamlington,Gary T. Mitchum,Kathleen L. McInnes,John J. Marra,Melisa Menendez,William Sweet,Richard A. Feely,Rik Wanninkhof,Christopher L. Sabine,Jeremy T. Mathis,Jeremy T. Mathis,Taro Takahashi,Samar Khatiwala,Bryan A. Franz,Michael J. Behrenfeld,David A. Siegel,P. Jeremy Werdell,Howard J. Diamond,Gerald D. Bell,Michelle L’Heureux,Michael S. Halpert,Stephen Baxter,Jonathan Gottschalck,Christopher W. Landsea,Stanley B. Goldenberg,Richard J. Pasch,Eric S. Blake,Jae Schemm,Todd B. Kimberlain,Carl J. Schreck,Thomas E. Evans,Suzana J. Camargo,Karin Gleason,Blair Trewin,Andrew Lorrey,Nicolas Fauchereau,Nicolas Fauchereau,Petra R. Chappell,Steve Ready,Gustavo J. Goni,John A. Knaff,I-I Lin,Bin Wang,A. Brett Mullan,Alexandre Bernardes Pezza,Caio A. S. Coelho,Chunzai Wang,Chris T. Fogarty,Philip J. Klotzbach,Jing-Jia Luo,Mark A. Lander,Charles Chip Guard,Martin O. Jeffries,Martin O. Jeffries,Jacqueline A. Richter-Menge,Jacqueline A. Richter-Menge,James E. Overland,Jeffrey R. Key,Edward Hanna,I. Hanssen-Bauer,B. M. Kim,Seong-Joong Kim,John Walsh,Muyin Wang,Uma S. Bhatt,Yinghui Liu,Robert S. Stone,Robert S. Stone,Christopher J. Cox,Von P. Walden,Jennifer A. Francis,S. J. Vavrus,Qiuhong Tang,Germar Bernhard,Gloria L. Manney,Jnes Uwe Grooß,Rolf Müller,Anu Heikkilä,Bjørn Helge Johnsen,Tapani Koskela,Kaisa Lakkala,Tove Marit Svendby,Arne Dahlback,Lori Bruhwiler,Tuomas Laurila,Doug Worthy,Patricia K. Quinn,Andreas Stohl,Alexander Baklanov,Mark Flanner,Andreas Herber,Kaarle Kupiainen,K. S. Law,Julia Schmale,Sangeeta Sharma,Vigdis Vestreng,K. von Salzen,Donald K. Perovich,Donald K. Perovich,Sebastian Gerland,Stefan Hendricks,Walter N. Meier,Marcel Nicolaus,Mark Tschudi,Mary-Louise Timmermans,Igor Ashik,Ivan E. Frolov,H. K. Ha,R. B. Ingvaldsen,T. Kikuchi,T. W. Kim,Richard A. Krishfield,H. Loeng,Shigeto Nishino,Robert S. Pickart,Igor V. Polyakov,Benjamin Rabe,Ursula Schauer,Peter Schlosser,W. M. Smethie,Vladimir Sokolov,Michael Steele,John M. Toole,William J. Williams,Rebecca A. Woodgate,S. Zimmerman,Jessica N. Cross,Jessica N. Cross,Wiley Evans,Wiley Evans,Leif G. Anderson,Michiyo Yamamoto-Kawai,Chris Derksen,Ross Brown,Kari Luojus,Martin Sharp,Gabriel J. Wolken,M. L. Geai,David Burgess,Anthony Arendt,Bert Wouters,Jack Kohler,L. M. Andreassen,Marco Tedesco,Marco Tedesco,Jason E. Box,John Cappelen,Xavier Fettweis,T. S. Jensen,Thomas L. Mote,Asa K. Rennermalm,Laurence C. Smith,R. S. W. van de Wal,John Wahr,Claude R. Duguay,Laura C. Brown,Kyun Kuk Kang,H. Kheyrollah Pour,Dmitry A. Streletskiy,Dmitry Drozdov,G. V. Malkova,N. G. Oberman,Alexander Kholodov,Sergei Marchenko,Ryan L. Fogt,Ted Scambos,Kyle R. Clem,S Barreira,Steve Colwell,Linda M. Keller,Matthew A. Lazzara,Alberto Setzer,David H. Bromwich,Shih-Yu Wang,Lei Wang,Hongxing Liu,Shujie Wang,Song Shu,Robert A. Massom,Phillip Reid,Sharon Stammerjohn,Jan L. Lieser,Paul A. Newman,Natalya Kramarova,Eric R. Nash,Michael C. Pitts,Bryan J. Johnson,Bryan J. Johnson,Michelle L. Santee,Geir O. Braathen,Garret G. Campbell,Allen Pope,Terry Haran,Ahira Sánchez-Lugo,James A. Renwick,Wassila M. Thiaw,Scott J. Weaver,Lucie A. Vincent,David Phillips,Robert Whitewood,Jake Crouch,Richard R. Heim,Chris Fenimore,John A. Augustine,R. Pascual,Adelina Albanil,J. L. Vazquez,Rene Lobato,Jorge A. Amador,Eric J. Alfaro,Hugo G. Hidalgo,Ana María Durán-Quesada,Blanca Calderón,Ingrid L. Rivera,Carla Vega,Tannecia S. Stephenson,Michael A. Taylor,Adrian R. Trotman,Avalon O. Porter,Idelmis T. Gonzalez,Jacqueline M. Spence,Natalie McLean,Jayaka D. Campbell,Glenroy Brown,Mary Butler,Rosalind C. Blenman,Arlene P. Aaron-Morrison,Vernie Marcellin-Honore’,R. Martinez,Juan Arévalo,Gualberto Carrasco,Christian Euscátegui,Juan Bazo,Juan José Nieto,Eduardo Zambrano,José A. Marengo,Lincoln M. Alves,Jhan Carlo Espinoza,Josyane Ronchail,Mario Bidegain,José Luis Stella,Olga Clorinda Penalba,Khadija Kabidi,Amal Sayouri,Awatif Ebrahim,I. A. James,Francis S. Dekaa,Fatou Sima,K. Alama Coulibaly,Wilson Gitau,L. Chang’a,Christopher S. Oludhe,Laban Ogallo,Zachary Atheru,Peter Ambenje,Agnes Kijazi,H. Ng’ongolo,P. Luhunga,Pamela Levira,Andries Kruger,Charlotte McBride,Zo Rakotomavo,Guillaume Jumaux,Katja Trachte,Peter Bissolli,Andre Obregon,Helga Nitsche,David E. Parker,John Kennedy,Michael Kendon,Ricardo M. Trigo,David Barriopedro,Alexandre M. Ramos,Serhat Sensoy,Diana Hovhannisyan,Olga N. Bulygina,Mahbobeh Khoshkam,Natalia N. Korshunova,Lamjav Oyunjargal,E. Hyung Park,Fatemeh Rahimzadeh,M. Rajeevan,Vyacheslav N. Razuvaev,J. V. Revadekar,A. K. Srivastava,R. Yamada,Peiqun Zhang,Shotaro Tanaka,Kazuyoshi Yoshimatsu,Hiroshi Ohno,Catherine Ganter,Gregor Macara,Simon McGree,Skie Tobin +448 more
TL;DR: The State of the Climate for 2013 as discussed by the authors is a very low-resolution file and it can be downloaded in a few minutes for a high-resolution version of the report to download.
Journal ArticleDOI
Arctic winter 2005: Implications for stratospheric ozone loss and climate change
Markus Rex,Ross J. Salawitch,H. Deckelmann,P. von der Gathen,Neil R. P. Harris,Martyn P. Chipperfield,Barbara Naujokat,E. Reimer,Marc Allaart,Signe B. Andersen,Richard M. Bevilacqua,Geir O. Braathen,Hans Claude,J. Davies,H. De Backer,H. Dier,Valery Dorokhov,H. Fast,M. Gerding,Sophie Godin-Beekmann,Karl W. Hoppel,Beverly J. Johnson,Esko Kyrö,Z. Litynska,David J. Moore,Hideaki Nakane,M. C. Parrondo,A. D. Risley,P. Skrivankova,René Stübi,P. Viatte,Vladimir Yushkov,Christos Zerefos +32 more
TL;DR: In this article, the Arctic polar vortex exhibited widespread regions of low temperatures during the winter of 2005, resulting in significant ozone depletion by chlorine and bromine species, and the volume of Arctic vortex air cold enough to support the existence of polar stratospheric clouds.