Academic literature on the topic 'Radio meteorology – Southern Hemisphere'

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Journal articles on the topic "Radio meteorology – Southern Hemisphere"

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Leroy, Stephen S., Chi O. Ao, and Olga Verkhoglyadova. "Mapping GPS Radio Occultation Data by Bayesian Interpolation." Journal of Atmospheric and Oceanic Technology 29, no. 8 (2012): 1062–74. http://dx.doi.org/10.1175/jtech-d-11-00179.1.

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Abstract Bayesian interpolation for mapping GPS radio occultation data on a sphere is explored and its performance evaluated. Bayesian interpolation is ideally suited to the task of fitting data randomly and nonuniformly distributed with unknown error without overfitting the data. The geopotential height at dry pressure 200 hPa is simulated as data with theoretical distributions of the Challenging Mini-Satellite Payload (CHAMP) and of the Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC). The simulated CHAMP data are found to be best fit with a spherical harmonic
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Cucurull, L., R. Atlas, R. Li, M. J. Mueller, and R. N. Hoffman. "An Observing System Simulation Experiment with a Constellation of Radio Occultation Satellites." Monthly Weather Review 146, no. 12 (2018): 4247–59. http://dx.doi.org/10.1175/mwr-d-18-0089.1.

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Abstract Experiments with a global observing system simulation experiment (OSSE) system based on the recent 7-km-resolution NASA nature run (G5NR) were conducted to determine the potential value of proposed Global Navigation Satellite System (GNSS) radio occultation (RO) constellations in current operational numerical weather prediction systems. The RO observations were simulated with the geographic sampling expected from the original planned Constellation Observing System for Meteorology, Ionosphere, and Climate-2 (COSMIC-2) system, with six equatorial (total of ~6000 soundings per day) and s
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Cucurull, L., J. C. Derber, R. Treadon, and R. J. Purser. "Assimilation of Global Positioning System Radio Occultation Observations into NCEP’s Global Data Assimilation System." Monthly Weather Review 135, no. 9 (2007): 3174–93. http://dx.doi.org/10.1175/mwr3461.1.

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Abstract The Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) mission launched six small satellites in April 2006, each carrying a GPS radio occultation (RO) receiver. At final orbit, COSMIC will provide ∼2500–3000 RO soundings per day uniformly distributed around the globe in near–real time. In preparation for the assimilation of COSMIC data in an operational framework, the NCEP/Environmental Modeling Center (EMC) has successfully developed the capability of assimilating profiles of refractivity and bending angle. Each forward operator has been implemented with
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Li, Wei, Longqiang Huang, Shaocheng Zhang, and Yanju Chai. "Assessing Global Ionosphere TEC Maps with Satellite Altimetry and Ionospheric Radio Occultation Observations." Sensors 19, no. 24 (2019): 5489. http://dx.doi.org/10.3390/s19245489.

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As global navigation satellite system (GNSS)stations are sparsely distributed in oceanic area, oceanic areas usually have lower precision than continental areas on a global ionosphere maps (GIM). On the other hand, space-borne observations like satellite altimetry (SA) and ionospheric radio occultation (IRO) have substantial dual-frequency observations in oceanic areas, which could be used for total electron content (TEC) retrieval. In this paper, the Jason-2 SA and Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) IRO products were used to assess the precision o
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Cucurull, L., and J. C. Derber. "Operational Implementation of COSMIC Observations into NCEP’s Global Data Assimilation System." Weather and Forecasting 23, no. 4 (2008): 702–11. http://dx.doi.org/10.1175/2008waf2007070.1.

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Abstract The next generation of NCEP’s Global Data Assimilation System became operational on 1 May 2007. This system incorporates the assimilation of global positioning system (GPS) radio occultation (RO) profiles from the Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC) mission launched in April 2006. Roughly 1 yr after the launch of COSMIC, NCEP has begun operational use of this new dataset. A preliminary assessment of this observation type was performed with an earlier version of NCEP’s analysis at a lower resolution. These experiments showed positive impact w
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Cucurull, L. "Improvement in the Use of an Operational Constellation of GPS Radio Occultation Receivers in Weather Forecasting." Weather and Forecasting 25, no. 2 (2010): 749–67. http://dx.doi.org/10.1175/2009waf2222302.1.

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Abstract As of May 2007, the National Centers for Environmental Prediction (NCEP) implemented a new Global Data Assimilation System. This system incorporated the assimilation of global positioning system (GPS) radio occultation (RO) profiles from the Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC) mission, which was launched in April 2006. Since then, this new type of observation has been shown to provide additional information on the thermodynamic state of the atmosphere, resulting in a significant increase in the model skill. Recent updates of the analysis and
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Tsuda, T. "Global distribution of vertical wavenumber spectra in the lower stratosphere observed using high-vertical-resolution temperature profiles from COSMIC GPS radio occultation." Annales Geophysicae 34, no. 2 (2016): 203–13. http://dx.doi.org/10.5194/angeo-34-203-2016.

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Abstract. We retrieved temperature (T) profiles with a high vertical resolution using the full spectrum inversion (FSI) method from the Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC) GPS radio occultation (GPS-RO) data from January 2007 to December 2009. We studied the characteristics of temperature perturbations in the stratosphere at 20–27 km altitude. This height range does not include a sharp jump in the background Brunt–Väisälä frequency squared (N2) near the tropopause, and it was reasonably stable regardless of season and latitude. We analyzed the vertic
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Paulik, L. C., and T. Birner. "Quantifying the deep convective temperature signal within the tropical tropopause layer (TTL)." Atmospheric Chemistry and Physics 12, no. 24 (2012): 12183–95. http://dx.doi.org/10.5194/acp-12-12183-2012.

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Abstract. Dynamics on a vast range of spatial and temporal scales, from individual convective plumes to planetary-scale circulations, play a role in driving the temperature variability in the tropical tropopause layer (TTL). Here, we aim to better quantify the deep convective temperature signal within the TTL using multiple datasets. First, we investigate the link between ozone and temperature in the TTL using the Southern Hemisphere Additional Ozonesondes (SHADOZ) dataset. Low ozone concentrations in the TTL are indicative of deep convective transport from the boundary layer. We confirm the u
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Salinger, Jim. "Meteorology of the Southern Hemisphere." Agricultural and Forest Meteorology 116, no. 1-2 (2003): 113–15. http://dx.doi.org/10.1016/s0168-1923(02)00250-2.

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Karoly, David J., and Dayton G. Vincent. "Meteorology of the Southern Hemisphere." Meteorological Monographs 49 (December 1, 1998): 1–410. http://dx.doi.org/10.1175/0065-9401-27.49.1.

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Dissertations / Theses on the topic "Radio meteorology – Southern Hemisphere"

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Roux, David Gerhardus. "An investigation of the structure of the Southern Hemisphere radio-meteor streams." Thesis, Rhodes University, 1988. http://hdl.handle.net/10962/d1004587.

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Our current knowledge of the Solar System, with a particular emphasis on the systems of interplanetary objects, is reviewed, and the theory of meteors and the reflection of radio waves from meteoric ionization is then discussed. A description of the meteor radar is given and a method of calibrating the antenna beam is developed. The main project comprises two parts: (a) A general survey of the radar echorate for 20 major and minor meteor streams and the sporadic meteor background, conducted from Grahamstown over the period 1986 April to 1988 January, is described. Definite shower activity was
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Ummenhofer, Caroline C. Mathematics &amp Statistics Faculty of Science UNSW. "Southern hemisphere regional precipitation and climate variability : extrems trends and prdictability." Awarded by:University of New South Wales. Mathematics & Statistics, 2008. http://handle.unsw.edu.au/1959.4/41253.

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This PhD thesis investigates the relative importance of oceanic and atmospheric influences on extremes, long-term trends, and seasonal to interannual variability of precipitation for different regions in the Southern Hemisphere in observations, reanalysis data, and output from general circulation models (GCM). Examination of interannual rainfall extremes over southwest Western Australia (SWWA) reveals a characteristic dipole pattern of Indian Ocean sea surface temperature anomalies (SSTA). This coincides with a large-scale reorganization of the wind field over the tropical/subtropical Indian
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Cao, Jing. "An investigation of transport during minor stratospheric warmings in the Southern Hemisphere." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/25964.

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Clark, Logan N. "Southern Hemisphere Pressure Relationships during the 20th Century - Implications for Climate Reconstructions and Model Evaluation." Ohio University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1586778291377432.

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Hungwe, Faith. "Variability analysis of a sample of potential southern calibration sources." Thesis, Rhodes University, 2009. http://hdl.handle.net/10962/d1005281.

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A considerable number of Very Long Baseline Interferometry (VLBI) surveys have been conducted in the northern hemisphere and very few in the southern hemisphere mostly because of a lack of telescopes and therefore adequate baseline coverage. Thus there is a deficit of calibrator sources in the southern hemisphere. Further, some of the most interesting astronomical objects eg. the galactic centre and the nearest galaxies (the small and large Magellanic Clouds) lie in the southern hemisphere and these require high resolution studies. With a major expansion of radio astronomy observing capability
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Widlansky, Matthew J. "Climate dynamics of the South Pacific Convergence Zone and similarities with other subtropical convergence zones in the Southern Hemisphere." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37095.

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Three semi-permanent cloud bands exist in the Southern Hemisphere extending southeastward from the equator, through the tropics, and into the subtropics. The most prominent of these features occurs in the South Pacific and is referred to as the South Pacific Convergence Zone (SPCZ). Similar convergence zones, with less intensity, exist in the South Atlantic (SACZ) and Indian (SICZ) oceans. We attempt to explain the physical mechanisms that promote the diagonal orientation of the SPCZ and the processes that determine the timescales of its variability. It is argued that the slowly varying sea su
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Sleinkofer, Amanda M. "Antarctic Sea Ice Extent Reconstructions Throughout the 20th Century." Ohio University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1620313247537371.

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Tomas, Robert A. "Subseasonal variability in the Southern Hemisphere as simulated by a two-level atmospheric general circulation model." Thesis, 1987. http://hdl.handle.net/1957/29076.

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The dynamical nature of atmospheric disturbances in the Southern Hemisphere simulated by a two-level general circulation (GCM) model is studied. Time series of the dependent variables and diabatic heating components from 10 Southern Hemisphere winters (JJA) and summers (DJF) simulated by the Oregon State University two-level GCM are used. The time mean fields are presented and discussed. Variance and covariance analyses are performed to determine the geographical distribution, intensities and transport properties of high-frequency (periods between 2.5 and 10 days) and low-frequency (periods be
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Basu, Sayan. "VLBI Imaging of ICRF Sources in the Southern Hemisphere using Geodetic and Astrometric Observations." Thesis, 2020. http://hdl.handle.net/10500/26553.

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The present International Celestial Reference Frame (ICRF), the ICRF-3 is based on a catalogue of 4536 quasar positions obtained from Very Long Baseline Interferometry (VLBI) radio measurements. This radio frame is crucial for many applications, from measurements of Earth’s orientation in space to spacecraft navigation and measurements of sea-level rise. However, the deficit in ICRF source density in the South and lack of dedicated imaging campaigns in the South, to monitor structural changes, remain a big concern. These ICRF sources can exhibit spatially extended emission structures tha
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Kemi, Odedina Peter. "Clear-air radioclimatological modeling for terrestrial line of sight links in Southern Africa." Thesis, 2010. http://hdl.handle.net/10413/3109.

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This thesis has investigated radioclimatological study in a clear-air environment as applicable to terrestrial line of sight link design problems. Radioclimatological phenomena are adequately reviewed both for the precipitation effect and clear-air effect. The research focuses more on the clear-air effect of radioclimatological studies. Two Southern African countries chosen for case study in the report are Botswana and South Africa. To this end, radiosonde data gathered in Maun, Botswana and Durban, South Africa are used for model formulation and verification. The data used in the thesis range
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Books on the topic "Radio meteorology – Southern Hemisphere"

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Karoly, David J., and Dayton G. Vincent, eds. Meteorology of the Southern Hemisphere. American Meteorological Society, 1998. http://dx.doi.org/10.1007/978-1-935704-10-2.

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NATO Advanced Research Workshop on Dynamics, Transport, and Photochemistry in the Middle Atmosphere of the Southern Hemisphere (1989 San Francisco, Calif.). Dynamics, transport, and photochemistry in the middle atmosphere of the Southern Hemisphere. Kluwer Academic Publishers, 1990.

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Linacre, Edward. Climates and weather explained: An introduction from a southern perspective. Routledge, 1996.

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Linacre, Edward. Climates and Weather Explained. Taylor & Francis Inc, 2003.

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Linacre, Edward. Climates and weather explained. Routledge, 1997.

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J, Karoly David, Vincent Dayton G, and Cooperative Research Centre for Southern Hemisphere Meteorology (Australia), eds. Meteorology of the Southern Hemisphere. American Meteorological Society, 1998.

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Second International Conference on Southern Hemisphere Meteorology. Amer Meteorological Society, 1986.

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Cooperative Research Centre for Southern Hemisphere Meteorology (Corporate Author), David J. Karoly (Editor), and Dayton G. Vincent (Editor), eds. Meteorology of the Southern Hemisphere (Meteorological Monographs (Amer Meteorological Soc)). Amer Meteorological Society, 1998.

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Tomas, Robert A. Subseasonal variability in the Southern Hemisphere as simulated by a two-level atmospheric general circulation model. 1987.

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R, Jeffries W., and United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., eds. A new NASA-MSFC mission analysis global cloud cover data base. National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1985.

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Book chapters on the topic "Radio meteorology – Southern Hemisphere"

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Reeder, Michael J., and Roger K. Smith. "Mesoscale Meteorology." In Meteorology of the Southern Hemisphere. American Meteorological Society, 1998. http://dx.doi.org/10.1007/978-1-935704-10-2_8.

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Bromwich, David H., and Thomas R. Parish. "Meteorology of the Antarctic." In Meteorology of the Southern Hemisphere. American Meteorological Society, 1998. http://dx.doi.org/10.1007/978-1-935704-10-2_7.

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Randel, William J., and Paul A. Newman. "The Stratosphere in the Southern Hemisphere." In Meteorology of the Southern Hemisphere. American Meteorological Society, 1998. http://dx.doi.org/10.1007/978-1-935704-10-2_9.

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McBride, John. "Indonesia, Papua New Guinea, and Tropical Australia: The Southern Hemisphere Monsoon." In Meteorology of the Southern Hemisphere. American Meteorological Society, 1998. http://dx.doi.org/10.1007/978-1-935704-10-2_3.

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Hurrell, James W., Harry van Loon, and Dennis J. Shea. "The Mean State of the Troposphere." In Meteorology of the Southern Hemisphere. American Meteorological Society, 1998. http://dx.doi.org/10.1007/978-1-935704-10-2_1.

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Godfrey, J. Stuart, and Stephen R. Rintoul. "The Role of the Oceans in Southern Hemisphere Climate." In Meteorology of the Southern Hemisphere. American Meteorological Society, 1998. http://dx.doi.org/10.1007/978-1-935704-10-2_10.

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Kiladis, George N., and Kingtse C. Mo. "Interannual and Intraseasonal Variability in the Southern Hemisphere." In Meteorology of the Southern Hemisphere. American Meteorological Society, 1998. http://dx.doi.org/10.1007/978-1-935704-10-2_11.

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Jones, Philip D., and Robert J. Allan. "Climatic Change and Long-Term Climatic Variability." In Meteorology of the Southern Hemisphere. American Meteorological Society, 1998. http://dx.doi.org/10.1007/978-1-935704-10-2_12.

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Meehl, Gerald A. "Climate Modeling." In Meteorology of the Southern Hemisphere. American Meteorological Society, 1998. http://dx.doi.org/10.1007/978-1-935704-10-2_13.

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Karoly, David J., Dayton G. Vincent, and Jon M. Schrage. "General Circulation." In Meteorology of the Southern Hemisphere. American Meteorological Society, 1998. http://dx.doi.org/10.1007/978-1-935704-10-2_2.

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Conference papers on the topic "Radio meteorology – Southern Hemisphere"

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de Witt, Alet, and Michael Bietenholz. "Analysis of potential VLBI southern hemisphere radio calibrators." In 11th European VLBI Network Symposium & Users Meeting. Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.178.0084.

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Lemarchand, Guillermo A., Gregory M. Beskin, Fernando R. Colomb, and Mariano Mendez. "Radio and optical SETI from the southern hemisphere." In OE/LASE'93: Optics, Electro-Optics, & Laser Applications in Science& Engineering, edited by Stuart A. Kingsley. SPIE, 1993. http://dx.doi.org/10.1117/12.150119.

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Plathner, Dietmar E. "Next-generation radio telescope of the 12- to 15-m class for the future large-interferometer arrays in the southern hemisphere." In Astronomical Telescopes & Instrumentation, edited by Thomas G. Phillips. SPIE, 1998. http://dx.doi.org/10.1117/12.317408.

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