Academic literature on the topic 'Fronts (Meteorology) Central Australia'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Fronts (Meteorology) Central Australia.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Fronts (Meteorology) Central Australia"
1
Pook, M. J., J. S. Risbey, P. C. McIntosh, C. C. Ummenhofer, A. G. Marshall, and G. A. Meyers. "The Seasonal Cycle of Blocking and Associated Physical Mechanisms in the Australian Region and Relationship with Rainfall." Monthly Weather Review 141, no. 12 (November 25, 2013): 4534–53. http://dx.doi.org/10.1175/mwr-d-13-00040.1.
Full textAbstract:
Abstract The seasonal cycle of blocking in the Australian region is shown to be associated with major seasonal temperature changes over continental Antarctica (approximately 15°–35°C) and Australia (about 8°–17°C) and with minor changes over the surrounding oceans (below 5°C). These changes are superimposed on a favorable background state for blocking in the region resulting from a conjunction of physical influences. These include the geographical configuration and topography of the Australian and Antarctic continents and the positive west to east gradient of sea surface temperature in the Indo-Australian sector of the Southern Ocean. Blocking is represented by a blocking index (BI) developed by the Australian Bureau of Meteorology. The BI has a marked seasonal cycle that reflects seasonal changes in the strength of the westerly winds in the midtroposphere at selected latitudes. Significant correlations between the BI at Australian longitudes and rainfall have been demonstrated in southern and central Australia for the austral autumn, winter, and spring. Patchy positive correlations are evident in the south during summer but significant negative correlations are apparent in the central tropical north. By decomposing the rainfall into its contributions from identifiable synoptic types during the April–October growing season, it is shown that the high correlation between blocking and rainfall in southern Australia is explained by the component of rainfall associated with cutoff lows. These systems form the cyclonic components of blocking dipoles. In contrast, there is no significant correlation between the BI and rainfall from Southern Ocean fronts.
2
Zillman, John. "Von Neumayer and the origins of Australian and international meteorology." Proceedings of the Royal Society of Victoria 123, no. 1 (2011): 70. http://dx.doi.org/10.1071/rs11070.
Full textAbstract:
Georg von Neumayer played a central role in building the foundations of Australian meteorology and in shaping the global framework of cooperation under the International Meteorological Organization (IMO), the forerunner of the World Meteorological Organization (WMO). Though his time in Australia was relatively brief, his name stands alongside those of Lieutenant William Dawes (active from 1788-1791), Sir Thomas Brisbane (1822-24), Robert Ellery (1863-1895), Sir Charles Todd (1856-1906), Clement Wragge (1883-1903) and Henry Chamberlain Russell (1859-1904) in the short list of Australia’s outstanding meteorological pioneers; and with Lt. Matthew Fontaine Maury, Admiral Robert FitzRoy and Professors C.H.D. Buys Ballot, H. Wild and E. Mascart in building the 19th century framework for international cooperation in meteorology, especially through his role as President of the International Polar Commission which organised the First International Polar Year (1882-83). This paper provides a brief overview of the origins of Australian meteorology and of the 1873 establishment and early work of the IMO in providing the international framework for cooperation in meteorology until its replacement by the intergovernmental WMO in 1950.
3
Hope, Pandora, Kevin Keay, Michael Pook, Jennifer Catto, Ian Simmonds, Graham Mills, Peter McIntosh, James Risbey, and Gareth Berry. "A Comparison of Automated Methods of Front Recognition for Climate Studies: A Case Study in Southwest Western Australia." Monthly Weather Review 142, no. 1 (January 1, 2014): 343–63. http://dx.doi.org/10.1175/mwr-d-12-00252.1.
Full textAbstract:
Abstract The identification of extratropical fronts in reanalyses and climate models is an important climate diagnostic that aids dynamical understanding and model verification. This study compares six frontal identification methods that are applied to June and July reanalysis data over the Central Wheatbelt of southwest Western Australia for 1979–2006. Much of the winter rainfall over this region originates from frontal systems. Five of the methods use automated algorithms. These make use of different approaches, based on shifts in 850-hPa winds (WND), gradients of temperature (TGR) and wet-bulb potential temperature (WPT), pattern matching (PMM), and a self-organizing map (SOM). The sixth method was a manual synoptic technique (MAN). On average, about 50% of rain days were associated with fronts in most schemes (although methods PMM and SOM exhibited a lower percentage). On a daily basis, most methods identify the same systems more than 50% of the time, and over the 28-yr period the seasonal time series correlate strongly. The association with rainfall is less clear. The WND time series of seasonal frontal counts correlate significantly with Central Wheatbelt rainfall. All automated methods identify fronts on some days that are classified as cutoff lows in the manual analysis, which will impact rainfall correlations. The front numbers identified on all days by the automated methods decline from 1979 to 2006 (but only the TGR and WPT trends were significant at the 10% level). The results here highlight that automated techniques have value in understanding frontal behavior and can be used to identify the changes in the frequency of frontal systems through time.
4
Lewis, Cameron J., Yi Huang, Steven T. Siems, and Michael J. Manton. "Wintertime orographic precipitation over western Tasmania." Journal of Southern Hemisphere Earth Systems Science 68, no. 1 (2018): 22. http://dx.doi.org/10.1071/es18003.
Full textAbstract:
The wintertime (April - October) precipitation across western Tasmania (west of 147°E) has been studied for two years (2014 and 2015). Using the AWAP precipitation analysis, the average daily rainfall across western Tasmania was found to be 4.49 mm day-1 for all winter days and 6.99 mm day-1 for rain days (average precipitation greater than 1 mm day-1). Rain days were observed for ~63% of all days during the winter months. Rain days were frequently recorded after the pas-sage of a cold front, when winds are typically from the west and southwest, off the open Southern Ocean. The daily precipitation was found to be highly correlated (r = 0.55) with the 12 UTC ERA-Interim 1000 m wind speed at a point upwind of Tasmania, roughly 100 km off the west coast.Given the highly variable meteorology of the Southern Ocean storm track and the complex topography, western Tasmania is a natural testbed for studying orographic precipitation. Both locally blocked and unblocked flows, caused by changes in the low-level thermodynamic stability, occur frequently over the course of a winter with a stable environment having a lower average precipitation rate (3.66 mm day-1) than an unstable environment (8.40 mm day-1), although only a weak correlation (r = -0.07) was found between precipitation and Ĥ2(the square of non-dimensional mountain height).Simulated precipitation from the Australian Bureau of Meteorology’s ACCESS-VT model was found to underestimate the AWAP precipitation by ~20%. The greatest negative relative errors between the AWAP and ACCESS-VT precipitation in unblocked flow were in the lee of the mountains, over central and south-central Tasmania. For days when the flow was blocked, this region had large positive relative errors in precipitation. Over the upwind side of western Tasmania, ACCESS-VT underestimated precipitation in comparison to AWAP in both un-blocked and blocked flows. However, the network of surface sites is quite sparse over this region, which limits our confidence in both the ACCESS-VT and the AWAP precipitation products. A more detailed investigation is necessary to better appreciate limitations in the ACCESS-VT forecasts in this region.
5
Schultz, David M., Lance F. Bosart, Brian A. Colle, Huw C. Davies, Christopher Dearden, Daniel Keyser, Olivia Martius, et al. "Extratropical Cyclones: A Century of Research on Meteorology’s Centerpiece." Meteorological Monographs 59 (January 1, 2019): 16.1–16.56. http://dx.doi.org/10.1175/amsmonographs-d-18-0015.1.
Full textAbstract:
Abstract The year 1919 was important in meteorology, not only because it was the year that the American Meteorological Society was founded, but also for two other reasons. One of the foundational papers in extratropical cyclone structure by Jakob Bjerknes was published in 1919, leading to what is now known as the Norwegian cyclone model. Also that year, a series of meetings was held that led to the formation of organizations that promoted the international collaboration and scientific exchange required for extratropical cyclone research, which by necessity involves spatial scales spanning national borders. This chapter describes the history of scientific inquiry into the structure, evolution, and dynamics of extratropical cyclones, their constituent fronts, and their attendant jet streams and storm tracks. We refer to these phenomena collectively as the centerpiece of meteorology because of their central role in fostering meteorological research during this century. This extremely productive period in extratropical cyclone research has been possible because of 1) the need to address practical challenges of poor forecasts that had large socioeconomic consequences, 2) the intermingling of theory, observations, and diagnosis (including dynamical modeling) to provide improved physical understanding and conceptual models, and 3) strong international cooperation. Conceptual frameworks for cyclones arise from a desire to classify and understand cyclones; they include the Norwegian cyclone model and its sister the Shapiro–Keyser cyclone model. The challenge of understanding the dynamics of cyclones led to such theoretical frameworks as quasigeostrophy, baroclinic instability, semigeostrophy, and frontogenesis. The challenge of predicting explosive extratropical cyclones in particular led to new theoretical developments such as potential-vorticity thinking and downstream development. Deeper appreciation of the limits of predictability has resulted from an evolution from determinism to chaos. Last, observational insights led to detailed cyclone and frontal structure, storm tracks, and rainbands.
6
Zhou, Weihuan, and Delei Peng. "Australia—Anti-Dumping Measures on A4 Copy Paper." American Journal of International Law 115, no. 1 (January 2021): 94–101. http://dx.doi.org/10.1017/ajil.2020.93.
Full textAbstract:
The World Trade Organization (WTO) Panel Report in Australia – Anti-Dumping Measures on A4 Copy Paper (Australia – A4 Copy Paper) marks a significant development of the multilateral rules on anti-dumping. Under certain circumstances, WTO agreements permit members to impose anti-dumping measures to counteract the injurious effect of dumping on domestic industries, typically through import duties. The Report is the first to examine in detail when an anti-dumping authority may determine that a “particular market situation” exists in the country of exportation under Article 2.2 of the WTO Anti-Dumping Agreement, potentially justifying the imposition of elevated remedial duties. The Report also develops the jurisprudence on how such remedies may be calculated, expounding the use of benchmark costs for the calculation of a constructed normal value (CNV) under Article 2.2.1.1. These doctrinal questions are central to the longstanding debate over how far the Anti-Dumping Agreement allows anti-dumping measures against state intervention and market distortions. On both fronts, the Australia – A4 Copy Paper panel created flexibilities for WTO members to respond to government-induced distortions. In doing so, the Report deviates considerably from the course set by the Appellate Body in the landmark EU – Biodiesel decision, which seemed to confine anti-dumping measures to responding to private action. At the same time, the panel left open several important issues relating to the adoption of CNVs and the use of benchmarks for their calculation, leaving wide latitude for investigating authorities to inflate dumping margins in practice.
7
Post, David, Peter Baker, and Damian Barrett. "Determining the impacts of coal seam gas extraction on water-dependent assets." APPEA Journal 56, no. 2 (2016): 545. http://dx.doi.org/10.1071/aj15051.
Full textAbstract:
Many Australians, particularly in rural areas, are seeking clear scientific information about the potential impacts of coal seam gas production on groundwater and surface water across the country. In response to the resultant community concern, the Australian Government commissioned an ambitious multi-disciplinary program of bioregional assessments to improve understanding of the potential impacts of coal seam gas (and large coal mining) activities on water-dependent assets across six bioregions in eastern and central Australia. Delivered through a collaboration between the Department of the Environment, the Bureau of Meteorology, CSIRO, and Geoscience Australia—and including close engagement with natural resource management and catchment management organisations, coal resource companies, Indigenous peoples and state governments—the results will allow coal resource companies, governments, and the community to focus on the areas where impacts may occur so that these can be minimised. Key findings of the program will be presented with specific reference to the potential impacts on water-dependent assets due to CSG development by Metgasco and AGL in the Clarence-Moreton and Gloucester regions, respectively.
8
Reid, Kimberley J., Ian Simmonds, Claire L. Vincent, and Andrew D. King. "The Australian Northwest Cloudband: Climatology, Mechanisms, and Association with Precipitation." Journal of Climate 32, no. 20 (September 10, 2019): 6665–84. http://dx.doi.org/10.1175/jcli-d-19-0031.1.
Full textAbstract:
Abstract Australian northwest cloudbands (NWCBs) are continental-scale bands of continuous cloud that stretch from northwest to southeast Australia. In earlier studies, where the characteristics of NWCBs and their relationship with precipitation were identified from satellite imagery, there was considerable uncertainty in the results due to limited quality and availability of data. The present study identifies NWCBs from 31 years of satellite data using a pattern-matching algorithm. This new climatology is the longest record based entirely on observations. Our findings include a strong annual cycle in NWCB frequency, with a summer maximum and winter minimum, and a statistically significant increase in annual NWCB days over the period 1984–2014. Physical mechanisms responsible for NWCB occurrences are explored to determine whether there is a fundamental difference between summer and winter NWCBs as hypothesized in earlier studies. Composite analyses are used to reveal that a key difference between these is their genesis mechanisms. Whereas summer NWCBs are triggered by cyclonic disturbances, winter NWCBs tend to form when meridional sea surface temperature gradients trigger baroclinic instability. It was also found that while precipitation is enhanced over parts of Australia during a cloudband day, it is reduced in other regions. During a cloudband day, precipitation extremes are more likely over northwest, central, and southeast Australia, while the probability of extreme precipitation decreases in northeast and southwest Australia. Additionally, cold fronts and NWCBs can interact, leading to enhanced rainfall over Australia.
9
Speer, Milton, Lance Leslie, Joshua Hartigan, and Shev MacNamara. "Changes in Frequency and Location of East Coast Low Pressure Systems Affecting Southeast Australia." Climate 9, no. 3 (March 5, 2021): 44. http://dx.doi.org/10.3390/cli9030044.
Full textAbstract:
Low pressure systems off the southeast coast of Australia can generate intense rainfall and associated flooding, destructive winds, and coastal erosion, particularly during the cool season (April–September). Impacts depend on coastal proximity, strength and latitude. Therefore, it is important to investigate changes in frequency, duration, location, and intensity of these systems. First, an existing observation-based database of these low pressure systems, for 1970–2006, is extended to 2019, focusing on April–September and using archived Australian Bureau of Meteorology MSLP charts. Second, data consistency between 1970 and 2006 and 2007 and 2019 is confirmed. Third, permutation testing is performed on differences in means and variances between the two 25-year intervals 1970–1994 and 1995–2019. Additionally, trends in positions, durations and central pressures of the systems are investigated. p-values from permutation tests reveal statistically significant increases in mean low pressure system frequencies. Specifically, a greater frequency of both total days and initial development days only, occurred in the latter period. Statistically significant lower variance for both latitude and longitude in systems that developed in both subtropical easterly and mid-latitude westerly wind regimes indicate a shift south and east in the latter period. Furthermore, statistically significant differences in variance of development location of explosive low pressure systems that develop in a low level easterly wind regime indicate a shift further south and east. These changes are consistent with fewer systems projected to impact the east coast. Finally, important changes are suggested in the large scale atmospheric dynamics of the eastern Australian/Tasman Sea region.
10
May, Jan-Hendrik, Stephen G. Wells, Timothy J. Cohen, Samuel K. Marx, Gerald C. Nanson, and Sophie E. Baker. "A soil Chronosequence on Lake Mega-Frome Beach Ridges and its Implications for Late Quaternary Pedogenesis and Paleoenvironmental Conditions in the Drylands of Southern Australia." Quaternary Research 83, no. 1 (January 2015): 150–65. http://dx.doi.org/10.1016/j.yqres.2014.11.002.
Full textAbstract:
AbstractThe terminal lake systems of central Australia are key sites for the reconstruction of late Quaternary paleoenvironments. Paleoshoreline deposits around these lakes reflect repeated lake filling episodes and such landforms have enabled the establishment of a luminescence-based chronology for filling events in previous studies. Here we present a detailed documentation of the morphology and chemistry of soils developed in four well-preserved beach ridges of late Pleistocene and mid-to-late Holocene age at Lake Callabonna to assess changes in dominant pedogenic processes. All soil profiles contain evidence for the incorporation of eolian-derived material, likely via the formation of desert pavements and vesicular horizons, and limited illuviation due to generally shallow wetting fronts. Even though soil properties in the four studied profiles also provide examples of parent material influence or site-specific processes related to the geomorphic setting, there is an overall trend of increasing enrichment of eolian-derived material since at least ~ 33 ka. Compared to the Holocene profiles, the derived average accumulation rates for the late Pleistocene profiles are significantly lower and may suggest that soils record important regional changes in paleoenvironments and dust dynamics related to shifts in the Southern Hemisphere westerlies.
Dissertations / Theses on the topic "Fronts (Meteorology) Central Australia"
1
Kazempour, Alireza. "Meteorological studies of cut-off lows over Australia with a VHF radar /." Title page, contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phk2361.pdf.
Full text
2
Yetter, Joseph A. "The nature of the propagation of sea breeze fronts in Central California." Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA238635.
Full textAbstract:
Thesis (M.S. in Meteorology and Oceanography)--Naval Postgraduate School, September 1990.Thesis Advisor(s): Shaw, William J. Second Reader: Durkee, Philip A. "September 1990." Description based on title screen as viewed on December 15, 2009. DTIC Identifier(s): Fronts (Meteorology), Atmosphere Models, Wave Propagation, LASBEX (Land Sea Breeze Experiment), Meteorological Data, Circulation, Directional, Atmospheric Motion. Author(s) subject terms: LASBEX, Lidar, Sodar. Includes bibliographical references (p. 64-65). Also available in print.
3
May, Peter T. "VHF radar studies of the troposphere /." Title page, contents and summary only, 1986. http://web4.library.adelaide.edu.au/theses/09PH/09phm4666.pdf.
Full text
4
May, Peter T. "VHF radar studies of the troposphere / by Peter T. May." Thesis, 1986. http://hdl.handle.net/2440/20636.
Full textBook chapters on the topic "Fronts (Meteorology) Central Australia"
1
Whiteman, C. David. "Air Masses and Fronts." In Mountain Meteorology. Oxford University Press, 2000. http://dx.doi.org/10.1093/oso/9780195132717.003.0013.
Full textAbstract:
An air mass is a regional-scale volume of air with horizontal layers of uniform temperature and humidity. Air masses form during episodes of high pressure when weak winds allow air to remain for several days over a flat area with uniform surface characteristics. The characteristics of the underlying surface determine the characteristics of the air mass, which is given a two-letter identifier. Air masses are identified by their locations of origin (maritime “m” or continental “c”) and by their characteristics (tropical “T” or polar “P”). Tropical air masses form in high pressure areas in warm, tropical regions. When a tropical air mass is formed over oceans (mT), it is warm, moist, and usually unstable. When formed over land (cT), it is hot and dry, with unstable air near the surface and stable air aloft. Polar air masses form in high pressure areas in the polar and subpolar regions. A polar air mass that forms over water (mP) is cool, moist, and unstable. A polar air mass that forms over land (cP) is cold, dry, and stable. An extremely cold polar air mass that forms in winter over arctic ice and snow surfaces is called an arctic air mass (cA). The distinction between arctic and polar air masses is not always clear because an arctic air mass that travels over a warm surface may be warmer near the surface than a polar air mass, although it is still colder aloft. Source regions for air masses and typical trajectories affecting North America are shown in figure 6.1. Polar air masses that originate over the flat, ice- and snow-covered regions east of the Rocky Mountains in northern and central Canada and Alaska, and arctic air masses that originate over the ice-covered Arctic Ocean influence winter weather. The midlatitudes are not a good air mass source region. The exposure to traveling weather systems is too great, the range of temperature and humidity too wide, and, in the United States, the topography is too varied. Instead, the midlatitudes are a region where clashing air masses meet. Cold air masses are usually driven southward from the subpolar regions, whereas warm air is forced northward from tropical regions.