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Otimização em Meteorologia: cálculo de perturbações condicionais não-lineares ótimas; Optimization in Meteorology: computation of conditional nonlinear optimal perturbations

Lima, Jessé Américo Gomes de
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 11/05/2012 PT
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Neste trabalho estudamos as aplicações do método do Gradiente Espectral Projetado (SPG) em Meteorologia nos campos de previsibilidade, estabilidade e sensibilidade. Inicialmente revisamos os Vetores Singulares Lineares (LSVs) e em seguida apresentamos a teoria das Perturbações Condicionais Não-Lineares Ótimas (CNOPs). Enquanto os métodos clássicos estão baseados no Modelo Tangente Linear, as CNOPs são uma formulação do mesmo problema baseado em Programação Não-Linear. As CNOPs são descritas na literatura como responsáveis por melhorias em relação aos métodos anteriores. Finalmente analisamos três exemplos de aplicação do método à problemas de previsibilidade, estabilidade e sensibilidade.; A revision about applications of Spectral Projected Gradient (SPG) in meteorology is done in the fields of predictability, stability and sensitivity. Initially we review about Linear Singular Vectos (LSVs) and we present the Conditional Nonlinear Optimal perturbations (CNOPs). While the classic methods are based on the Tangent Linear Model, CNOPs are another formulation of the problem based on Nonlinear Programming. CNOPs are described in bibliography as responsible by better results than older methods. Finally we analyze three applications in predictability...

A numerical model of equatorial waves with application to the seasonal upwelling in the Gulf of Guinea

Patton, Randall J
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 1, iv, 120 leaves; 6128732 bytes; 6128493 bytes; application/pdf; application/pdf
ENG
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by Randall J. Patton.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology and Physical Oceanography, 1981.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND LINDGREN.; Bibliography: leaves 118-120.

The effects of moisture on mountain lee waves

Durran, Dale Richard
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 142 leaves; 7457512 bytes; 7457269 bytes; application/pdf; application/pdf
ENG
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by Dale Richard Durran.; Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Meteorology and Physical Oceanography, 1981.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND LINDGREN.; Bibliography: leaves 136-139.

A theoretical analysis of the surface stress in mountainous regions

Blumen, William
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 131 leaves; 6978161 bytes; 6977915 bytes; application/pdf; application/pdf
ENG
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by William Blumen.; Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1963.; Includes bibliographical references (leaves 115-117).

The dynamics and kinematics of the coastal boundary layer off Long Island

Pettigrew, Neal Robert
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 262 leaves; 9536010 bytes; 9570429 bytes; application/pdf; application/pdf
EN_US
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by Neal Robert Pettigrew.; Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Meteorology and Physical Oceanography, 1981.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND LINDGREN.; Vita.; Bibliography: leaves 255-261.

MIZEX 87 meteorology atlas

Guest, Peter S.; Davidson, Kenneth L.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
EN_US
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The 1987 Marginal Ice Zone Experiment (MIZEX 87) was a multi-national interdisciplinary project in the Fram Strait from 19 March to 11 April 1987. Surface and upper-level measurements of meteorological parameters were obtained from three ships, the R/V Polar Circle, the R/V Haakon Mosby and the R/V valdivia. This atlas contains: 1) Time series of surface wind velocity, barometric pressure, relative humidity, and atmospheric temperature from the ships; 2) Maps showing six-hour averages of the locations of the ships and ice edge, and surface wind velocity vectors at the ships; 3) High-resolution profiles of wind, temperature and humidity up to 2500 m; and 4) Maps of sea- level pressure every 12 hours. Keywords: Arctic meteorology; Marginal ice zones

Department of Meteorology

Fonte: Monterey, California, Naval Postgraduate School Publicador: Monterey, California, Naval Postgraduate School
Tipo: Outros
EN_US
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Website describing project, programs and resources of the Meteorology Department.

Summary of Research 1995, Department of Meteorology

Faculty of the Department of Meteorology, Naval Postgraduate School
Fonte: Office of the Associate Provost and Dean of Research, Naval Postgraduate School. Publicador: Office of the Associate Provost and Dean of Research, Naval Postgraduate School.
Tipo: Relatório
EN_US
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The views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or the U.S. Government.; This report contains 32 summaries of research projects in the Department of Meteorology which were carried out under funding of the Naval Postgraduate School Research Program. A list of recent publications is also included which consists of conference presentations and publications, books, contributions to books, published journal papers, and technical reports.

Summary of Research 1996, Department of Meteorology

Faculty of the Department of Meteorology, Naval Postgraduate School
Fonte: Office of the Associate Provost and Dean of Research, Naval Postgraduate School. Publicador: Office of the Associate Provost and Dean of Research, Naval Postgraduate School.
Tipo: Relatório
EN_US
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The views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or the U.S. Government; This report contains summaries of research projects in the Department of Meteorology which were carried out under funding of the Naval Postgraduate School Research Program. A list of recent publications is also included which consists of conference presentations and publications, books, contributions to books, published journal papers, and technical reports.

Summary of Research 1997, Department of Meteorology

Faculty of the Department of Meteorology, Naval Postgraduate School
Fonte: Office of the Associate Provost and Dean of Research, Naval Postgraduate School. Publicador: Office of the Associate Provost and Dean of Research, Naval Postgraduate School.
Tipo: Relatório
EN_US
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46.84%
The views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or the U.S. Government.; This report contains summaries of research projects in the Department of Meteorology. A list of recent publications is also included which consists of conference presentations and publications, books, contributions to books, published journal papers, technical reports, and thesis abstracts.

Summary of Research 1998, Department of Meteorology

Faculty of the Department of Meteorology, Naval Postgraduate School
Fonte: Office of the Associate Provost and Dean of Research, Naval Postgraduate School. Publicador: Office of the Associate Provost and Dean of Research, Naval Postgraduate School.
Tipo: Relatório
EN_US
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The views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or the U.S. Government.; This report contains summaries of research projects in the Department of Meteorology. A list of recent publications is also included which consists of conference presentations and publications, books, contributions to books, published journal papers, technical reports, and thesis abstracts.

Summary of Research 2000, Department of Meteorology

Faculty of the Department of Meteorology, Naval Postgraduate School
Fonte: Office of the Associate Provost and Dean of Research, Naval Postgraduate School. Publicador: Office of the Associate Provost and Dean of Research, Naval Postgraduate School.
Tipo: Relatório
EN_US
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46.84%
The views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or U.S. Government.; This report contains project summaries of the research projects in the Department of Meteorology. A list of recent publications is also included, which consists of conference presentations and publications, books, contributions to books, published journal papers, and technical reports. Thesis abstracts of students advised by faculty in the Department are also included.

Summary of Research 2001, Department of Meteorology

Faculty of the Department of Meteorology, Naval Postgraduate School
Fonte: Office of the Associate Provost and Dean of Research, Naval Postgraduate School. Publicador: Office of the Associate Provost and Dean of Research, Naval Postgraduate School.
Tipo: Relatório
EN_US
Relevância na Pesquisa
46.84%
The views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or U.S. Government.; This report contains summaries of research projects in the Department of Meteorology which were carried out under funding of the Naval Postgraduate School Research Program. A list of recent publications is also included which consists of conference presentations and publications, books, contributions to books, published journal papers, and technical reports.

Meteorology Home

Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
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Meteorology Department at the Naval Postgraduate School website homepage.; The Department of Meteorology was founded in 1946 and throughout its history has had one of the leading meteorology programs in the country. It offers both Master of Science (MS) and Doctor of Philosophy (Ph.D.) degrees. The program is open to U.S. Officers from all branches of the military service, government civilians, and international officers from allied countries. The objective of the curriculum is to provide students with a sound understanding of the science of meteorology and to develop the technical expertise to provide and utilize meteorological data and models in support of all aspects of weather-dependent operations.

Fleet Numerical Meteorology and Oceanography Center, Part 2 [video]

Richmond, Alan; Clancy, Mike
Fonte: Monterey, California: Naval Postgraduate School. Publicador: Monterey, California: Naval Postgraduate School.
Tipo: Vídeo Formato: 146 MB. Duration: 00:05:29
EN_US
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Mike Clancy is interviewed by Alan Richmond about Super Computers and The History of Fleet Numerical Meteorology and Oceanography.

Mesoscale Meteorology "Primer": Training for the Operational Forecaster

Nuss, Wendell A.; Curry, William T.
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
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Mesoscale meteorological processes and the numerical models designed to analyze and forecast these processes are currently in use by the majority of operational forecasters. Although National Weather Service (NWS) forecasters typically have an undergraduate or higher degree in meteorology, forecasters in the Department of Defense typically do not have college degrees. Even though they are quite well trained in synoptic scale processes and forecasting, there is little or no information available, at the proper level, to merge their synoptic skills with the mesoscale processes that actually affect their daily forecasts. To meet this need whereby the less-formally educated forecaster can develop an understanding of mesoscale processes and their application to mesoscale model guidance and forecasting, a Mesoscale Meteorology Primer is being developed.; We thank Alan Bol, Joseph Lamos, Douglas Wesley of COMET for help in assembling the first modules and CDR Jeff Best of the Navy s Professional Development Center for support for this project. We also acknowledge that the source of the web page material shown in the figures is from the Cooperative Program for Operational Meteorology, Education, and Training (COMET) web site at http://www.comet.ucar.edu of the University Corporation for Atmospheric Research (UCAR)...

The role of Navy METOC regional centers and facilities in the new millennium: thoughts from a sabbatical tour

Wash, Carlyle H.; Rosenfeld, Leslie K.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
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During FY00, Professors Wash and Rosenfeld of the Naval Postgraduate School's Meteorology and Oceanography Departments, respectively, made extended visits to each of the Naval Meteorology and Oceanography Command's regional centers and facilities for the purposes of providing training, evaluating the use of METOC data, models, and tactical decision aids, and gathering information to aid in the improvement of the METOC curricula at NPS. This report represents a synopsis of their findings integrated over all of their visits. Three major roles for METOC regional centers and facilities are identified: (1) to be a source of local METOC knowledge and expertise for their area of responsibility, including familiarity with mesoscale circulations and all reliable sources of real-time data and model output; (2) to provide operational support to the fleet, including customized fused products and littoral oceanography products; and (3) to provide training for METOC personnel in regional-specific meteorology and oceanography, and continuing advanced technical training. A major finding is that technical education and training is inadequate to allow METOC personnel to take maximum advantage of the full range of data, models, and tactical decision aids available to them. Weaknesses in the quality-control and verification of METOC analysis and forecast products are also identified. A number of innovative practices at individual commands are recommended for adoption throughout the claimancy.

Increasing range and lethality of Extended-Range Munitions (ERMS) using Numerical Weather Prediction (NWP) and the AUV workbench to compute a Ballistic Correction (BALCOR)

Wahl, Douglas Timothy
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: xxvi, 119 p. : ill.
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Extended Range Munitions (ERMs) are gun-launched rocket-boosted munitions having an effective range ocer 27 km. In accordance with Sea power 21 and the Marine Corps's requirements for sea-based fire support, three ERMs are being developed. The purpose of this work is to increase the range and lethality of these munitions by applying environmental effects when computing the projectiles' trajectory. A broad review of artillery and munitions literature reveals that historically 66% of ballistic error can be attributed to meteorological factors. The most important factors are wind (speed and direction), temperature, and pressure. It has also been shown that global atmospheric numerical weather presictions (NWP) data typically outperforms the traditional radiosonde data and is suitable for use in ballistic corrections. Forecasted NWP products provided by the Fleet Numerical Meteorology and Oceanographic Center (FNMOC) are integrated using the Joint Meteorology and Oceanographic (METOC) Broker Language (JMBL) into a Five Degree of Freedom (5DOF) aerodynamic model within the Autonomous Unmanned Vehicle (AUV) Workbench producing a ballistic correction (BALCOR) for the munition. This new capability can significantly enhance naval gunfire effectiveness since the BALCOR increase the munitions' range and the ability apply kinetic energy onto the target rather than using it to maneuver to the target.

The Bureau of Meteorology reports that based on current scientific understanding , climate change will contribute to an increasing severity of extreme weather events . To what extent does available evidence support this prediction?

Smithies, Chris
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Relatório
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Advances in science and technology have allowed us to understand-many of the complex processes and interactions that determine weather and climate. These advances have also allowed us to conduct activities on a scale that is influencing our climate. Scientists now believe that the climate is changing at rates unprecedented in at least the last thousand years and that these changes are likely to cause an increase in the frequency and severity of extreme weather events. The purpose of this report is to examine the current evidence relating to how our climate works and, with an emphasis on the Australian region, examine the extent of the links between climate change and extreme weather. Some of the implications for Australia will also be explored. Weather is the fluctuating state of the atmosphere around us. Climate is the average weather in terms of mean and variability over a certain time-span and a certain area. The term extreme weather refers to those events well outside the mean such as heat waves, floods or droughts that are considered least likely to occur. Weather forecasting seeks to accurately predict what type of weather we will experience in a given region tomorrow or next week and relies on knowledge of the initial atmospheric conditions. Climate forecasting is more concerned with the change in atmospheric and other climatic conditions that will influence future weather patterns. Forecasting the likelihood of changes in extreme weather events requires an investigation of likely future climatic conditions from which weather will form. Earth's climate is always changing. Internal and external climate drivers including variations in the sun's energy output and the Earth's orbit have continually driven inter-connected climatic processes and warmed or cooled Earth's climate in the past. Climate change usually takes place over geological time spans but periods have been identified in the climate record where the climate crossed a 'tipping point' and underwent rapid climate change. According to Bureau of Meteorology climate data and extreme weather indices ...

On the usefulness of atmospheric measurements for air quality evaluation in the context of recent urban meteorology findings in México City

CRUZ NÚÑEZ,X.; JAZCILEVICH DIAMANT,A.
Fonte: Centro de Ciencias de la Atmósfera, UNAM Publicador: Centro de Ciencias de la Atmósfera, UNAM
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2007 EN
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In many cities, the main tool used to assess pollution abatement policies is the air quality information obtained from local monitoring network. However, in the context of a complex meteorology and land use such as those prevailing in México City, the point-wise character and lack of detailed chemistry of this information may confer conflictive or biased information. The approach to understand the problem could be not based on solid ground. It is not until the measurement effort is complemented with detailed meteorological and air quality modeling that proper use of the information can be assured. In order to provide an example of this assertion, the usefulness of measured air quality data is gauged in a simplified manner, constructing three dimensional graphs containing local emission concentrations of nitrogen oxides (NOx), volatile organic compounds (VOC) and maximum ozone (O3) concentrations, that we call "ozone isopleths", for three sites in México City. Together with corresponding wind rose data, an interpretation of the air pollution transport in the Valley of México using only measured data is attempted. This interpretation, based on measured information subject to local influences, is compared with recent air quality modeling results showing that when measured data is used in conjunction with air quality modeling a better interpretation of air pollution problem can be obtained. A correct strategy to study the air quality problem...