Meteorological Glossaries and Dictionaries: a Review of Their History And
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The Observation of the Lightning Induced Variations in Atmospheric Ions
XV International Conference on Atmospheric Electricity, 15-20 June 2014, Norman, Oklahoma, U.S.A. The Observation of the Lightning Induced Variations in Atmospheric Ions Xuemeng Chen1,*, Hanna E. Manninen1,2, Pasi Aalto1, Petri Keronen1, Antti Mäkelä3, Jussi Paatero3, Tuukka Petäjä1 and Markku Kulmala1 1. Department of Physics, University of Helsinki, Helsinki, Finland 2. Institute of Physics, University of Tartu, Estonia 3. Finnish Meteorological Institute, Helsinki, Finland ABSTRACT: Variations in atmospheric ion concentration were studied in a boreal forest in Finland, with emphasis on the effect of lightning. In general, changes in ion concentrations have diurnal and seasonal patterns. Distinct features were found in ions of different size ranges, namely small ions (0.8 – 1.7 nm) and intermediate ions (1.7 – 7 nm). Preliminary results on two case studies of lightning effect are present, one with rain effect and the other not. Bursts in the concentrations of small ions and intermediate ions were observed in both cases. However, different trends in trace gases were observed for the two cases. Further investigation is needed to reveal the nature of lightning ions and the mechanism in their formation. The work is under progress. INTRODUCTION Atmospheric ions, or air ions, refer to electric charge carriers present in the atmosphere. Distinct features exist in their chemical composition, mass, size as well as number of carried charges. According to Tammet [1998], atmospheric ions can be classified into small or cluster ions, intermediate ions, and large ions based on their mobility (Z) in air, being Z > 0.5 cm2V-1s-1, 0.5 cm2V-1s-1 ≤ Z ≥ 0.03 cm2V-1s-1 and Z< 0.03 cm2V-1s-1, respectively. -
Geography and Atmospheric Science 1
Geography and Atmospheric Science 1 Undergraduate Research Center is another great resource. The center Geography and aids undergraduates interested in doing research, offers funding opportunities, and provides step-by-step workshops which provide Atmospheric Science students the skills necessary to explore, investigate, and excel. Atmospheric Science labs include a Meteorology and Climate Hub Geography as an academic discipline studies the spatial dimensions of, (MACH) with state-of-the-art AWIPS II software used by the National and links between, culture, society, and environmental processes. The Weather Service and computer lab and collaborative space dedicated study of Atmospheric Science involves weather and climate and how to students doing research. Students also get hands-on experience, those affect human activity and life on earth. At the University of Kansas, from forecasting and providing reports to university radio (KJHK 90.7 our department's programs work to understand human activity and the FM) and television (KUJH-TV) to research project opportunities through physical world. our department and the University of Kansas Undergraduate Research Center. Why study geography? . Because people, places, and environments interact and evolve in a changing world. From conservation to soil science to the power of Undergraduate Programs geographic information science data and more, the study of geography at the University of Kansas prepares future leaders. The study of geography Geography encompasses landscape and physical features of the planet and human activity, the environment and resources, migration, and more. Our Geography integrates information from a variety of sources to study program (http://geog.ku.edu/degrees/) has a unique cross-disciplinary the nature of culture areas, the emergence of physical and human nature with pathway options (http://geog.ku.edu/geography-pathways/) landscapes, and problems of interaction between people and the and diverse faculty (http://geog.ku.edu/faculty/) who are passionate about environment. -
Air Quality in North America's Most Populous City
Atmos. Chem. Phys., 7, 2447–2473, 2007 www.atmos-chem-phys.net/7/2447/2007/ Atmospheric © Author(s) 2007. This work is licensed Chemistry under a Creative Commons License. and Physics Air quality in North America’s most populous city – overview of the MCMA-2003 campaign L. T. Molina1,2, C. E. Kolb3, B. de Foy1,2,4, B. K. Lamb5, W. H. Brune6, J. L. Jimenez7,8, R. Ramos-Villegas9, J. Sarmiento9, V. H. Paramo-Figueroa9, B. Cardenas10, V. Gutierrez-Avedoy10, and M. J. Molina1,11 1Department of Earth, Atmospheric and Planetary Science, Massachusetts Institute of Technology, Cambridge, MA, USA 2Molina Center for Energy and Environment, La Jolla, CA, USA 3Aerodyne Research, Inc., Billerica, MA, USA 4Saint Louis University, St. Louis, MO, USA 5Laboratory for Atmospheric Research, Department of Civil and Environmental Engineering, Washington State University, Pullman, WA, USA 6Department of Meteorology, Pennsylvania State University, University Park, PA, USA 7Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, CO, USA 8Cooperative Institute for Research in the Environmental Sciences (CIRES), Univ. of Colorado at Boulder, Boulder, CO, USA 9Secretary of Environment, Government of the Federal District, Mexico, DF, Mexico 10National Center for Environmental Research and Training, National Institute of Ecology, Mexico, DF, Mexico 11Department of Chemistry and Biochemistry, University of California at San Diego, San Diego, CA, USA Received: 22 February 2007 – Published in Atmos. Chem. Phys. Discuss.: 27 February 2007 Revised: 10 May 2007 – Accepted: 10 May 2007 – Published: 14 May 2007 Abstract. Exploratory field measurements in the Mexico 1 Introduction City Metropolitan Area (MCMA) in February 2002 set the stage for a major air quality field measurement campaign in 1.1 Air pollution in megacities the spring of 2003 (MCMA-2003). -
Assessing and Improving Cloud-Height Based Parameterisations of Global Lightning Flash Rate, and Their Impact on Lightning-Produced Nox and Tropospheric Composition
https://doi.org/10.5194/acp-2020-885 Preprint. Discussion started: 2 October 2020 c Author(s) 2020. CC BY 4.0 License. Assessing and improving cloud-height based parameterisations of global lightning flash rate, and their impact on lightning-produced NOx and tropospheric composition 5 Ashok K. Luhar1, Ian E. Galbally1, Matthew T. Woodhouse1, and Nathan Luke Abraham2,3 1CSIRO Oceans and Atmosphere, Aspendale, 3195, Australia 2National Centre for Atmospheric Science, Department of Chemistry, University of Cambridge, Cambridge, UK 3Department of Chemistry, University of Cambridge, Cambridge, UK 10 Correspondence to: Ashok K. Luhar ([email protected]) Abstract. Although lightning-generated oxides of nitrogen (LNOx) account for only approximately 10% of the global NOx source, it has a disproportionately large impact on tropospheric photochemistry due to the conducive conditions in the tropical upper troposphere where lightning is mostly discharged. In most global composition models, lightning flash rates used to calculate LNOx are expressed in terms of convective cloud-top height via the Price and Rind (1992) (PR92) 15 parameterisations for land and ocean. We conduct a critical assessment of flash-rate parameterisations that are based on cloud-top height and validate them within the ACCESS-UKCA global chemistry-climate model using the LIS/OTD satellite data. While the PR92 parameterisation for land yields satisfactory predictions, the oceanic parameterisation underestimates the observed flash-rate density severely, yielding a global average of 0.33 flashes s-1 compared to the observed 9.16 -1 flashes s over the ocean and leading to LNOx being underestimated proportionally. We formulate new/alternative flash-rate 20 parameterisations following Boccippio’s (2002) scaling relationships between thunderstorm electrical generator power and storm geometry coupled with available data. -
NWS Unified Surface Analysis Manual
Unified Surface Analysis Manual Weather Prediction Center Ocean Prediction Center National Hurricane Center Honolulu Forecast Office November 21, 2013 Table of Contents Chapter 1: Surface Analysis – Its History at the Analysis Centers…………….3 Chapter 2: Datasets available for creation of the Unified Analysis………...…..5 Chapter 3: The Unified Surface Analysis and related features.……….……….19 Chapter 4: Creation/Merging of the Unified Surface Analysis………….……..24 Chapter 5: Bibliography………………………………………………….…….30 Appendix A: Unified Graphics Legend showing Ocean Center symbols.….…33 2 Chapter 1: Surface Analysis – Its History at the Analysis Centers 1. INTRODUCTION Since 1942, surface analyses produced by several different offices within the U.S. Weather Bureau (USWB) and the National Oceanic and Atmospheric Administration’s (NOAA’s) National Weather Service (NWS) were generally based on the Norwegian Cyclone Model (Bjerknes 1919) over land, and in recent decades, the Shapiro-Keyser Model over the mid-latitudes of the ocean. The graphic below shows a typical evolution according to both models of cyclone development. Conceptual models of cyclone evolution showing lower-tropospheric (e.g., 850-hPa) geopotential height and fronts (top), and lower-tropospheric potential temperature (bottom). (a) Norwegian cyclone model: (I) incipient frontal cyclone, (II) and (III) narrowing warm sector, (IV) occlusion; (b) Shapiro–Keyser cyclone model: (I) incipient frontal cyclone, (II) frontal fracture, (III) frontal T-bone and bent-back front, (IV) frontal T-bone and warm seclusion. Panel (b) is adapted from Shapiro and Keyser (1990) , their FIG. 10.27 ) to enhance the zonal elongation of the cyclone and fronts and to reflect the continued existence of the frontal T-bone in stage IV. -
Atmospheric Science Brochure
Welcome from the Atmospheric Science Program! FForor MMoreore IInformationnformation Our program is led by seven faculty members Professor Clark Evans with expertise in atmospheric dynamics, weather Atmospheric Science Program Coordinator analysis and forecasting, cloud physics, air pollution meteorology, tropical and mesoscale meteorology, P. O. Box 413, Milwaukee, WI 53201 and chaotic systems. (414) 229-5116 [email protected] Your professional development is our top priority! We offer lots of faculty contact, opportunities for hands-on research, excellent computational facilities, and an array of courses to prepare you for your career. Learn more about the Atmospheric Science Study Abroad Visit us Online Atmospheric Science UWM offers the world’s www.math.uwm.edu/atmo fi rst faculty-led Major J study-abroad www.facebook.com/UWMAtmoSci program in www.innovativeweather.com Atmospheric Science. In this course, you can explore the effects of acid rain on Mexico’s cultural heritage sites. Atmospheric Science Major at the University of Wisconsin – Milwaukee The study of weather, climate, and their impacts on both Earth and human activities AAtmospherictmospheric SSciencecience CCareersareers PPreparatoryreparatory CCreditsredits BBeyondeyond tthehe CClassroomlassroom A career in atmospheric science is very rewarding • Math 231: Calculus and Analytic Geometry I Atmospheric Science because of the impact weather and climate have on • Math 232: Calculus and Analytic Geometry I INNNOVANOVATTIVEIVE students can work everyday life. You will fi nd atmospheric scientists • Math 233: Calculus and Analytic Geometry III WEEATHERATHER with real clients in many different roles: nearly 36% work in the • Math 234: Linear Algebra/Differential Equations providing forecasts, private sector; 33% for governmental agencies; 24% • Math 320: Intro to Differential Equations risk assessments and other weather-related services at educational institutions or laboratories; and 7% in • Physics 209/214: Physics I with Lab to the community and business partners across the media. -
El Movimiento Animalista En La Cultura Digital. Un Estudio Exploratorio Sobre Los Colectivos Antiespecistas Y La Lucha Por Los Derechos Animales
Revista Horizontes Sociológicos, vol. 2, 2014, pp. 152-165. El movimiento animalista en la cultura digital. Un estudio exploratorio sobre los colectivos antiespecistas y la lucha por los derechos animales. Méndez Anahí. Cita: Méndez Anahí (2014). El movimiento animalista en la cultura digital. Un estudio exploratorio sobre los colectivos antiespecistas y la lucha por los derechos animales. Revista Horizontes Sociológicos, 2, 152-165. Dirección estable: https://www.aacademica.org/anahi.mendez/29 Esta obra está bajo una licencia de Creative Commons. Para ver una copia de esta licencia, visite https://creativecommons.org/licenses/by-nc-sa/4.0/deed.es. Acta Académica es un proyecto académico sin fines de lucro enmarcado en la iniciativa de acceso abierto. Acta Académica fue creado para facilitar a investigadores de todo el mundo el compartir su producción académica. Para crear un perfil gratuitamente o acceder a otros trabajos visite: https://www.aacademica.org. 1 Año 2 | Número 4 | Julio-Diciembre de 2014 Publicación Internacional de Ciencias Sociales de periodicidad semestral Asociación Argentina de Sociología Franklin 6, 3° B Ciudad de Buenos Aires Correo Electrónico: [email protected] Web: http://aasociologia.wordpress.com Centro de Formación e Consejo Latinoamericano de Investigaciones Sociales Ciencias Sociales 2 Revista Horizontes Sociológicos Directora- Editora Responsable Alicia Itatí Palermo Coeditora Silvia Castillo Coordinador Editorial Francisco Favieri Coordinadora de Redacción Érica Lander Diseño isologo revista -
Clima Te Change 2007 – Synthesis Repor T
he Intergovernmental Panel on Climate Change (IPCC) was set up jointly by the World Meteorological Organization and the TUnited Nations Environment Programme to provide an authoritative international statement of scientific understanding of climate change. The IPCC’s periodic assessments of the causes, impacts and possible response strategies to climate change are the most comprehensive and up-to-date reports available on the subject, and form the standard reference for all concerned with climate change in academia, government and industry worldwide. This Synthesis Report is the fourth element of the IPCC Fourth Assessment Report “Climate Change 2007”. Through three working groups, many hundreds of international experts assess climate change in this Report. The three working group contributions are available from Cambridge University Press: Climate Change 2007 – The Physical Science Basis Contribution of Working Group I to the Fourth Assessment Report of the IPCC (ISBN 978 0521 88009-1 Hardback; 978 0521 70596-7 Paperback) Climate Change 2007 – Impacts, Adaptation and Vulnerability Contribution of Working Group II to the Fourth Assessment Report of the IPCC (978 0521 88010-7 Hardback; 978 0521 70597-4 Paperback) Climate Change 2007 – Mitigation of Climate Change CHANGE 2007 – SYNTHESIS REPORT CLIMATE Contribution of Working Group III to the Fourth Assessment Report of the IPCC (978 0521 88011-4 Hardback; 978 0521 70598-1 Paperback) Climate Change 2007 – Synthesis Report is based on the assessment carried out by the three Working Groups -
Spatial Trends in United States Tornado Frequency
www.nature.com/npjclimatsci ARTICLE OPEN Spatial trends in United States tornado frequency Vittorio A. Gensini 1 and Harold E. Brooks2 Severe thunderstorms accompanied by tornadoes, hail, and damaging winds cause an average of 5.4 billion dollars of damage each year across the United States, and 10 billion-dollar events are no longer uncommon. This overall economic and casualty risk—with over 600 severe thunderstorm related deaths in 2011—has prompted public and scientific inquiries about the impact of climate change on tornadoes. We show that national annual frequencies of tornado reports have remained relatively constant, but significant spatially-varying temporal trends in tornado frequency have occurred since 1979. Negative tendencies of tornado occurrence have been noted in portions of the central and southern Great Plains, while robust positive trends have been documented in portions of the Midwest and Southeast United States. In addition, the significant tornado parameter is used as an environmental covariate to increase confidence in the tornado report results. npj Climate and Atmospheric Science (2018) 1:38 ; doi:10.1038/s41612-018-0048-2 INTRODUCTION A derived covariate, such as STP, is complementary to tornado Recent trends in global and United States temperature have reports for climatological studies. For example, it has been shown provoked questions about the impact on frequency, intensity, that variables like storm relative helicity and convective precipita- timing, and location of tornadoes. When removing many non- tion adequately represent United States monthly tornado 16 meteorological factors, it is shown that the annual frequency of frequency. Reports are subject to a human reporting process, United States tornadoes through the most reliable portions of the whereas environmental covariates allow for an objective model- historical record has remained relatively constant.1–4 The most derived climatology. -
AI4ESP1027 ( Many Types Including Tropical Cyclones Exhibit Greater Realism in High-Resolution, Multidecadal Simulations
Tracking Extremes in Exascale Simulations Utilizing Exascale Platforms 1 Authors/Affiliations William D. Collins (LBNL and UC Berkeley) and the Calibrated and Systematic Characteriza- tion, Attribution, and Detection of Extremes (CASCADE) Scientific Focus Area (SFA) 2 Focal Area Insight gleaned from complex data (both observed and simulated) using AI, big data analytics, and other advanced methods 3 Science Challenge There is a growing recognition in the literature that understanding variability and trends in hy- drometeorological extremes relies on understanding variability and trends in the meteorological phenomena that drive these extremes. Such phenomenon-focused understanding relies critically on a robust methodology for identifying the occurrence of these phenomena in observations and model output, but a robust methodology does not currently exist. There are a variety of heuristic methods reported in the literature for identifying, and in some cases temporally tracking, meteo- rological phenomena. However, there have been several intercomparison projects (and resulting papers) indicating that there is a large uncertainty associated with choices in the identification methods; this is the case for extratropical cyclones (ETCs) [1], atmospheric rivers (ARs) [2], and even tropical cyclones (TCs) [3]; and we hypothesize that this is a general issue with heuristic identification methods altogether. These studies clearly show that this identification uncertainty leads to a large, and previously under-recognized, quantitative and even qualitative uncertainty in our understanding of these phenomena. In light of these issues, we suggest that the field could be advanced by addressing two overar- ching questions. First, can we explicitly quantify uncertainty associated with detecting hydrom- eteorological phenomena? Second, can we decompose detection uncertainty into reducible and irreducible parts? 4 Rationale Anthropogenically-forced climate changes in the number and character of extreme storms have the potential to significantly impact human and natural systems. -
Meteorology (MTEOR) 1
Meteorology (MTEOR) 1 MTEOR 140: Climate and Society METEOROLOGY (MTEOR) (Cross-listed with AGRON, ENV S, GEOL). Cr. 3. F.S. Any experimental courses offered by MTEOR can be found at: The climate system of our planet. How nature and our actions alter the registrar.iastate.edu/faculty-staff/courses/explistings/ (http:// existing energy balance leading to climate change. Past climates on www.registrar.iastate.edu/faculty-staff/courses/explistings/) our planet. The influence of climate on society and resource availability during the Holocene (~ 11,000 years ago to present) with focus on Courses primarily for undergraduates: changes post industrial revolution. Significant climate events that have altered our way of life in the past. Projected changes in future climate and MTEOR 107: Severe and Hazardous Weather potential impacts on society, environment and resources. Adaption to and (2-0) Cr. 1. F. mitigation of climate change. Understanding of atmospheric processes that play a role in creating severe and hazardous weather. Focus on thunderstorms, tornadoes, MTEOR 160: Water Resources of the World hurricanes, floods, blizzards, ice storms, and temperature extremes. (Cross-listed with AGRON, ENV S, GEOL). (3-0) Cr. 3. S. Impacts on lives and property. Study of the occurrence, history, development, and management of world water resources. Basic hydrologic principles including climate, surface MTEOR 111: Synoptic Applications water, groundwater, and water quality. Historical and current perspectives (1-0) Cr. 1. Repeatable. F. on water policy, use, and the role of water in society and the environment. Prereq: Credit or enrollment in MATH 165 Meets International Perspectives Requirement. Current weather discussions and introduction to synoptic-scale interpretation of meteorology. -
Atmospheric Physics I
Atmospheric Physics I PHYS 621, Fall 2016 Dates and Location: Tuesday & Thursday, 2:30PM- 3:45AM; Public Policy 367 INSTRUCTOR: Dr. Pengwang Zhai Email: [email protected] Ph.: 410-455-3682 (office) OFFICE HOURS: Anytime Through Email appointment TEXTS: Wallace, J.M. and P. V. Hobbs, Atmospheric Science: An Introductory Survey, 2nd ed., Elsevier, 2006 Salby, M. L., Fundamentals of Atmospheric Physics, Academic Press, 1996. REFERENCE TEXTS (Highly recommend): Holton, J. R. Introduction to Dynamic Meteorology, 4th ed., Academic Press, 2004. DESCRIPTION: Composition and structure of the earth's atmosphere, atmospheric radiation and thermodynamics, fundamentals of atmospheric dynamics, overview of climatology. GRADING: Homework (25%), Midterm (30%), Final (40%), Participation/Discussion(5%) Course Strategy: There will be no exam make-up except for University-policy accepted absence. To promote active learning, students are strongly encouraged to read the corresponding textbook chapters before each lecture. Pre-lecture homework and discussion assignments are given routinely before lectures. Reading the sections of the textbook corresponding to the assigned homework exercises is considered part of the homework assignment; you are responsible for material in the assigned reading whether or not it is discussed in the lecture. Homework will be due weekly in Thursday’s lecture. There will be a 30% penalty on late homework submissions. COURSE OUTLINE: Overview A. Earth's atmosphere System of units The Sun and the orbit and size of Earth Chemical constituents of Earth’s atmosphere Vertical structure of temperature and density Wind and precipitation Ozone layer, hydrological and carbon cycles Global Energy Budget B. Atmospheric Radiation Maxwell’s Equation & EM wave Blackbody radiation: Planck’s Law and Stefan-Boltzmann’s law Spectral characteristics of Solar and Thermal infrared radiation Atmospheric absorption & Greenhouse effect Atmospheric scattering, clouds and aerosols Radiative forcing and climate Spatial and Temporal distribution of solar radiation C.