Academic literature on the topic 'Odin satellite'

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Journal articles on the topic "Odin satellite"

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Frisk, U., M. Hagström, J. Ala-Laurinaho, S. Andersson, J. C. Berges, J. P. Chabaud, M. Dahlgren, et al. "The Odin satellite." Astronomy & Astrophysics 402, no. 3 (April 23, 2003): L27—L34. http://dx.doi.org/10.1051/0004-6361:20030335.

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Olberg, M., U. Frisk, A. Lecacheux, A. O. H. Olofsson, P. Baron, P. Bergman, G. Florin, et al. "The Odin satellite." Astronomy & Astrophysics 402, no. 3 (April 23, 2003): L35—L38. http://dx.doi.org/10.1051/0004-6361:20030336.

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Hjalmarson, Åke. "New astronomy with the Odin satellite." Advances in Space Research 34, no. 3 (January 2004): 504–10. http://dx.doi.org/10.1016/j.asr.2003.05.024.

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Rösevall, J. D., D. P. Murtagh, J. Urban, and A. K. Jones. "A study of polar ozone depletion based on sequential assimilation of satellite data from the ENVISAT/MIPAS and Odin/SMR instruments." Atmospheric Chemistry and Physics 7, no. 3 (February 16, 2007): 899–911. http://dx.doi.org/10.5194/acp-7-899-2007.

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Abstract. The objective of this study is to demonstrate how polar ozone depletion can be mapped and quantified by assimilating ozone data from satellites into the wind driven transport model DIAMOND, (Dynamical Isentropic Assimilation Model for OdiN Data). By assimilating a large set of satellite data into a transport model, ozone fields can be built up that are less noisy than the individual satellite ozone profiles. The transported fields can subsequently be compared to later sets of incoming satellite data so that the rates and geographical distribution of ozone depletion can be determined. By tracing the amounts of solar irradiation received by different air parcels in a transport model it is furthermore possible to study the photolytic reactions that destroy ozone. In this study, destruction of ozone that took place in the Antarctic winter of 2003 and in the Arctic winter of 2002/2003 have been examined by assimilating ozone data from the ENVISAT/MIPAS and Odin/SMR satellite-instruments. Large scale depletion of ozone was observed in the Antarctic polar vortex of 2003 when sunlight returned after the polar night. By mid October ENVISAT/MIPAS data indicate vortex ozone depletion in the ranges 80–100% and 70–90% on the 425 and 475 K potential temperature levels respectively while the Odin/SMR data indicates depletion in the ranges 70–90% and 50–70%. The discrepancy between the two instruments has been attributed to systematic errors in the Odin/SMR data. Assimilated fields of ENVISAT/MIPAS data indicate ozone depletion in the range 10–20% on the 475 K potential temperature level, (~19 km altitude), in the central regions of the 2002/2003 Arctic polar vortex. Assimilated fields of Odin/SMR data on the other hand indicate ozone depletion in the range 20–30%.
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Hjalmarson, Åke, Per Bergman, Nicolas Biver, H. G. Florén, Urban Frisk, Tatsuhiko Hasegawa, Kay Justtanont, et al. "Recent astronomy highlights from the Odin satellite." Advances in Space Research 36, no. 6 (January 2005): 1031–47. http://dx.doi.org/10.1016/j.asr.2005.06.014.

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Kopp, G., A. Belova, E. Diez y Riega V, J. Groß, G. Hochschild, P. Hoffmann, D. Murtagh, U. Raffalski, and J. Urban. "Intercomparison of Odin–SMR ozone profiles with ground-based millimetre-wave observations in the Arctic, the mid-latitudes, and the tropics." Canadian Journal of Physics 85, no. 11 (November 1, 2007): 1097–110. http://dx.doi.org/10.1139/p07-088.

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The sub-millimetre radiometer (SMR) on board the Odin satellite measures signatures of ozone in two bands centred at 501.8 and 544.6 GHz. From the measurements, ozone volume mixing ratio profiles in the stratosphere and lower mesosphere are retrieved using the Optimal Estimation Method. In this paper, the ozone profiles measured by Odin–SMR (level-2 data ver. 2.1 and 2.0, respectively) are compared to measurements taken by ground-based millimetre wave radiometers in the Arctic; at Kiruna, Sweden; in the mid-latitudes on the Zugspitze, Germany; and in the tropics at Mérida, Venezuela. The Kiruna Microwave Radiometer (KIMRA) covers the frequency range 195–224 GHz, and the Millimeter Wave Radiometer MIRA 2, which was operated on the Zugspitze and at Mérida, measures in the frequency band 268–281 GHz. From the measurements, ozone profiles in the vertical range between approximately 15–65 km were retrieved using the Optimal Estimation Method. Since the ground-based measurements have a lower vertical resolution than those of Odin the latter were degraded using the averaging kernels of the ground-based retrievals. The comparison of the resulting profiles to the ground-based data enables the identification of biases in the Odin measurements and their possible latitudinal variation. In general, a good agreement between satellite and ground-based measurements for the 501.8 GHz band was found in the stratosphere except for a negative bias in the Odin data of about 10–15% in the tropical measurements. The Odin measurements taken at 544.9 GHz yielded systematically 20–30% lower ozone mixing ratios in the middle stratosphere than the ground-based measurements at all sites. PACS No.: 92.60.hd
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Pagani, L., A. O. H. Olofsson, P. Bergman, P. Bernath, J. H. Black, R. S. Booth, V. Buat, et al. "Low upper limits on the O2abundance from the Odin satellite." Astronomy & Astrophysics 402, no. 3 (April 23, 2003): L77—L81. http://dx.doi.org/10.1051/0004-6361:20030344.

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Persson, C. M., M. Olberg, Å. Hjalmarson, M. Spaans, J. H. Black, U. Frisk, T. Liljeström, A. O. H. Olofsson, D. R. Poelman, and Aa Sandqvist. "Water and ammonia abundances in S140 with the Odin satellite." Astronomy & Astrophysics 494, no. 2 (November 20, 2008): 637–46. http://dx.doi.org/10.1051/0004-6361:200810930.

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Ekström, M., P. Eriksson, W. G. Read, M. Milz, and D. P. Murtagh. "Comparison of satellite limb-sounding humidity climatologies of the uppermost tropical troposphere." Atmospheric Chemistry and Physics 8, no. 2 (January 25, 2008): 309–20. http://dx.doi.org/10.5194/acp-8-309-2008.

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Abstract. Humidity climatologies of the tropical uppermost troposphere from satellite limb emission measurements have been compared. Four instruments are considered; UARS-MLS, Odin-SMR, and Aura-MLS operating in the microwave region, and MIPAS in the infrared region. A reference for the comparison is obtained by MOZAIC in-situ measurements. The upper tropospheric humidity products were compared on basis of their empirical probability density functions and seasonally averaged horizontal fields at two altitude layers, 12 and 15 km. The probability density functions of the microwave datasets were found to be in very good agreement with each other, and were also consistent with MOZAIC. The average seasonal humidities differ with less than 10%RHi between the instruments, indicating that stated measurement accuracies of 20–30% are conservative estimates. The systematic uncertainty in Odin-SMR data due to cloud correction was also independently estimated to be 10%RHi. MIPAS humidity profiles were found to suffer from cloud contamination, with only 30% of the measurements reaching into the upper troposphere, but under clear-sky conditions there is a good agreement between MIPAS, Odin-SMR and Aura-MLS. Odin-SMR and the two MLS datasets can be treated as independent, being based on different underlying spectroscopy and technology. The good agreement between the microwave limb-sounders, and MOZAIC, is therefore an important step towards understanding the upper tropospheric humidity. The found accuracy of 10%RHi is approaching the level required to validate climate modelling of the upper troposphere humidity. The comparison of microwave and infrared also stresses that microwave limb-sounding is necessary for a complete view of the upper troposphere.
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Ekström, M., P. Eriksson, W. G. Read, and D. P. Murtagh. "Comparison of satellite limb-sounding humidity climatologies of the uppermost tropical troposphere." Atmospheric Chemistry and Physics Discussions 7, no. 4 (August 28, 2007): 12617–55. http://dx.doi.org/10.5194/acpd-7-12617-2007.

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Abstract. Humidity climatologies of the tropical uppermost troposphere from satellite limb emission measurements have been compared. Four instruments are considered; UARS-MLS, Odin-SMR, and Aura-MLS operating in the microwave region, and MIPAS in the IR region. A reference for the comparison is obtained by MOZAIC in-situ measurements. The upper tropospheric humidity products were compared on basis of their empirical probability density functions and seasonally averaged horizontal fields at two altitude layers, 12 and 15 km. The probability density functions of the microwave datasets were found to be in very good agreement with each other, and are also consistent with MOZAIC. The average seasonal humidities differ with less than 10%RHi between the instruments, indicating that stated measurement accuracies of 20–30% are conservative estimates. The systematic uncertainty in Odin-SMR data due to cloud correction was also independently estimated to be 10%RHi. MIPAS humidity profiles were found to suffer from cloud contamination, with only 30% of the measurements reaching into the upper troposphere, but under clear-sky conditions there is a good agreement between MIPAS, Odin-SMR and Aura-MLS. Odin-SMR and the two MLS datasets can be treated as independent, being based on different underlying spectroscopy and technology. The good agreement between the microwave limb-sounders, and MOZAIC, is therefore an important step towards understanding the upper tropospheric humidity. The found accuracy of 10%RHi is approaching the level required to validate climate modelling of the upper troposphere humidity. The comparison of microwave and IR also stresses that microwave limb-sounding is necessary for a complete view of the upper troposphere.
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Dissertations / Theses on the topic "Odin satellite"

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Baron, Philippe. "Développement et validation du code MOLIERE : chaîne de traitement des mesures micro-ondes du satellite Odin." Bordeaux 1, 1999. http://www.theses.fr/1999BOR10539.

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L'equipe d'aeronomie de l'observatoire de bordeaux est implique dans le projet de satellite international (suede-france-canada-finlande) odin emportant l'instrument sub-millimeter radiometer (smr) dont 50% du temps d'observation est dedie a l'etude de l'atmosphere terrestre aux ondes millimetriques et sub-millimetriques. Ce satellite sera lance au debut de l'an 2000. Une part importante du memoire concerne la description du logiciel moliere dont l'objet est la restitution des profils d'abondance de constituants de la moyenne atmosphere (entre 10 et 90 km) comme o 3, clo, h 2o, a partir des mesures de leur emission thermique entre 480 et 580 ghz. Ce logiciel a ete elabore parallelement a un code developpe en suede sous la responsabilite du departement de meteorologie de l'universite de stockholm et deviendra l'element central de la chaine de traitement des mesures smr mise en place en france par le centre national d'etudes spatiales pendant la phase de validation. La premiere partie de ce code concerne la resolution du probleme direct pour simuler les spectres mesures par smr et calculer les fonctions de poids. Pour cela nous avons elabore un code de calcul de transfert radiatif reprenant les proprietes radiatives de l'atmosphere dans le domaine de longueur d'onde etudie. La seconde partie presente la resolution du probleme inverse permettant l'estimation d'un profil vertical a partir de l'ensemble des spectres mesures lors d'un balayage vertical du limbe atmospherique. Pour cela, nous avons utilise la methode de l'estimation optimale dans les cas d'un probleme direct lineaire et non-lineaire. Nous presentons une analyse detaillee des erreurs ainsi que les performances esperees pour toutes les bandes selectionnees pour smr. Le code a ete valide a partir de comparaisons avec des modeles developpes dans d'autres laboratoires. Un bon accord a ete trouve entre les resultats de moliere et ceux des autres codes. Ce logiciel a ete adapte pour l'analyse des mesures realisees a partir du sol de l'ozone a 110 ghz et du monoxyde de chlore et de l'ozone a 278 ghz. Les resultats concernant l'ozone a 110 ghz sont en tres bon accord avec ceux d'autres instruments implantes au sol et embarques a bord de satellites. Le calcul de la variation diurne de clo par un modele photochimique 0-d reproduit correctement les mesures a 40 km d'altitude.
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Hultgren, Kristoffer. "Tomographic views of the middle atmosphere from a satellite platform." Doctoral thesis, Stockholms universitet, Meteorologiska institutionen (MISU), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-106833.

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The middle atmosphere is a very important part of the Earth system. Until recently, we did not realize the importance of the structure of this vaporous shell and of the fundamental role it plays in both creating and sustaining life on the planet. Thanks to the development and improvement of new sounding methods and techniques, our knowledge of the composition of the atmosphere has become more detailed than ever before. We have also learned how to reveal complex interactions between different species and how they react to the incoming solar radiation. The middle part of the Earth’s atmosphere serves as a host for the Polar Mesospheric Clouds. These clouds consist of a thin layer of water-ice particles, only exsisting during the summer months and only close to the poles. There are indications that the occurrence of Polar Mesospheric Clouds may be linked to climate change. It has been pointed out that the first sightings coincide with the industrial revolution. Satellite observations have shown that Polar Mesospheric Clouds have become brighter and possibly more widely distributed during the 20th century. The clouds might therefore be suited as indicators of the variability of the climate - a good reason for studying this night-shimmering phenomena. The clouds can also be used as a proxy for middle atmospheric dynamics. In order to fully utilize Polar Mesospheric Clouds as tracers for atmospheric variability and dynamics, we need to better understand their local properties. The Optical Spectrograph and Infra-Red Imager System (OSIRIS) is one of two instruments installed on the Odin satellite. The optical spectrograph of this instrument observes sunlight scattered by the atmosphere and thus the Polar Mesospheric Clouds. This thesis deals with a tomographic technique that can reconstruct both horizontal and vertical structures of the clouds by using observations from various angles of the atmospheric region. From this information, microphysical properties such as particle sizes and number densities are obtained. The tomographic technique presented in this thesis also provides a basis for a new satellite concept - MATS. The idea behind the MATS satellite mission is to analyze wave activity in the atmosphere over a wide range of spatial and temporal scales, based on the scientific heritage from Odin/OSIRIS and the tomographic algorithms presented in this thesis.

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper3: Submitted. Paper 4: Manuscript.

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David, Nathalie (Nathalie M. Y. ). Carleton University Dissertation Engineering Mechanical and Aerospace. "Design and simulation of momentum controller for Odin; a small satellite with versatile and stringent pointing requirements." Ottawa, 1995.

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Belova, Alla. "Studies of planetary waves in ozone and temperature fields as observed by the Odin satellite in 2002-2007." Doctoral thesis, Umeå University, Physics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1819.

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The results presented in this PhD thesis are mainly based on measurements collected by the advanced sub-mm radiometer (SMR) aboard the Odin satellite in 2002-2007. The primary data are series of temperature and ozone profiles in the middle atmosphere up to 68 km. These data are used to estimate global properties of planetary wave propagation in both horizontal and vertical directions. As good-quality retrievals from Odin are not available above 68 km, additional data sources have been considered in order to extend coverage of planetary wave properties to higher levels. These sources are temperature observations at 85-90 km obtained by the ground-based meteor radars located in the polar region in the Northern Hemisphere in Scandinavia at Esrange and at Andenes, and in Canada at Resolute Bay and at Yellowknife. Also, the series of ozone profiles from the ground-based Kiruna mm-wave radiometer, KIMRA, are used in order to compare the wave properties in ozone fields measured globally by Odin and locally by KIMRA.

The main task of this PhD thesis is to study the 5-day planetary wave characteristics in the Earth’s atmosphere. The influence of waves on the atmospheric circulation causes, for example, substantial local departures from radiative equilibrium, observed in the winter stratosphere and close to the summer mesopause. Seasonal variations of the 5-day planetary wave properties and physical phenomena related to these variations are also studied in this thesis.

During winter, planetary waves propagate freely in the vertical direction, and maximal wave amplitudes are found in the extratropical stratosphere. The Northern Hemisphere (NH) winter periods of 2002-2003 and 2005 have been examined and a comparison has been carried out between the planetary wave properties in temperature and ozone variations. In general, the results show an expected in-phase behavior between the temperature and ozone fields in the lower stratosphere (due to dynamic effects) and an out-of-phase pattern in the upper stratosphere (which is expected as a result of photochemical effects).

Earlier theoretical and experimental studies have shown that, despite unfavourable summertime wind conditions, 5-day planetary waves can be registered not only in the stratosphere but also at higher altitudes in the mesosphere. The NH summers of 2003-2005 and 2007 have been considered and results have confirmed the existence of 5-day planetary waves up to the mesopause level (85-90 km). The results demonstrate that, for different periods, the possible source of the observed waves could be located at lower altitudes in both hemispheres with successive propagation into the summer mesosphere, or the waves could be generated in-situ as a result of the baroclinic instability of summer easterly jet.

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Lossow, Stefan. "Observations of water vapour in the middle atmosphere." Doctoral thesis, Stockholm : Department of Meteorology, Stockholm University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-8167.

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Book chapters on the topic "Odin satellite"

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Hjalmarson, Å., and M. Olberg. "New Astronomy Results from the Odin Satellite." In Springer Proceedings in Physics, 331–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-18902-9_60.

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Hjalmarson, Åke. "ODIN: A Swedish Submillimeter Wave Spectroscopy Satellite for Astronomy and Aeronomy." In CO: Twenty-Five Years of Millimeter-Wave Spectroscopy, 227–29. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5414-7_41.

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Conference papers on the topic "Odin satellite"

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Griffioen, Erik, and Liisa Oikarinen. "Comparison of a pseudo-3D radiative transfer model with Monte Carlo simulations in limb-viewing geometry for the satellite instrument ODIN/OSIRIS." In Remote Sensing, edited by Jaqueline E. Russell. SPIE, 1999. http://dx.doi.org/10.1117/12.373062.

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Shafrova, Svetlana, Dmitri Matskevitch, Curtis Holub, and Ted Kokkinis. "Identification of Potentially Unmanageable Ice Features." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62509.

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Satellite remote sensing technology plays an important role in ice monitoring and characterization in support of ice management operations for Arctic floating drilling that previously have been described by industry to include three stages: (1) far-field reconnaissance for potentially unmanageable ice features (2) mid-field verification of ice breakability and (3) near-field ice floe size reduction. The paper discusses the application of satellite remote sensing methods for identification of Potentially Unmanageable Ice Features (PUIF) as well as challenges associated with satellite data interpretation and feature tracking. Examples of PUIF identification using both publicly and commercially available satellite imagery and other remote sensing data collected during the Oden Arctic Technology Research Cruise 2015 (OATRC 2015) are presented and the challenges with the PUIF detection and monitoring are discussed. In addition, airborne remote sensing systems for PUIF identification, both existing (such as Electromagnetic Induction (EMI)) and under development (such as dual frequency radar, multi-band synthetic aperture radar), are discussed and their capabilities contrasted and compared to satellite-based methods. Furthermore, potential ways of optimally combining airborne and satellite remote sensing are proposed.
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So¨derkvist, Johan, and Tomas Jansson. "IceMS: A Software for Ice Management." In ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2005. http://dx.doi.org/10.1115/omae2005-67516.

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A combined system consisting of a forecast model to predict ice drift and a viewer tool for ice management, IceMS were developed for providing ice information during the Arctic Coring EXpedition (ACEX). The main task during the multi international expedition ACEX was to retrieve sediment cores from the Lomonosov Ridge in the central Arctic Ocean. Large ice floes or thick ice that drifts towards the drill ship threaten the operation by forcing the drill ship from its position. The gathered ice information was imported into IceMS and presented to the ice management team. Risk analysis for continued drilling operation was made, and instructions of where the Icebreakers Oden and Sovjetski Soyuz should break ice in the drilling area were carried out. The software IceMS contains tools to update the ice conditions, history lines of ships and buoys, and includes the possibility to import track lines showing the ice drift forecasts. The key concept is the combined visualization of map data and up to date imagery from satellite, airplane photos and ice charts, together with results from an ice drift forecast model. It is possible to move the images in IceMS map according to the observed ice drift recorded by the buoys placed on drifting ice floes. An overlay to mark and edit polygons, e.g. representing areas with certain ice classification, can be shown on top of the images. The edit overlay can be exported to file, which enables sharing of judgments and forecasts to other units. The model to predict ice drift is a state of the art ice drift model that is developed for describing rapid changes such as circular motion with a period of about twelve hours called inertial motion. The ice drift forecast was based on weather forecast and measured ocean currents near the drill site. The combined system of IceMS and the forecast model is being further developed for supporting ice management teams on offshore platforms and other constructions in ice infested areas. Results from Ice Management will be presented, showing examples of how IceMS presented ice information and validation of the ice drift model during the Arctic Coring EXpedition (ACEX). New tools in IceMS will also be presented.
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