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Synoptic meteorology practicum

2019/2020
Programme:
Physics, First Cycle
Orientation:
Meteorology
Year:
3 year
Semester:
second
Kind:
mandatory
ECTS:
4
Course director:
Hours per week – 2. semester:
Lectures
1
Seminar
0
Tutorial
3
Lab
0
Prerequisites

Enrollment in the 3rd study year.

Completed 2nd year course Introduction to Meteorology and attended 3rd year course Dynamical Meteorology I

Completed projekt homeworks and an oral project presentation is a prerequisite for the theoretical part of the examination.

Attendance of the course lecture and labs is mandatory.

Content (Syllabus outline)

Synoptic practicum consists of seven block, each lasting 2 weeks, and it is split into introductory theoretical part (lectures) and exercises based on weather maps, satellite images and other classical tools of synoptic analysis. Each block is completed by a project report and there is a final individual project presentation by students.

Synoptic weather maps: subjective and objective analysis of surface and upper-level maps.

Introduction to prognostic maps and post-processing of NWP model outputs. Thermodynamical stability analysis.

Atmospheric fronts and air masses: definition of fronts and air masses. Frontogenesis and frontolysis, frontogenetic function. Semi-geostrophic theory.

Analysis of frontal processes on synoptic maps.

Q vector and upper-level frontogenesis: definition of Q vector. Relationship between the Q vector, frontogenesis and synoptic-scale vertical motions.

Satellite imagary. Diagnosis of upper-level fronts and vertical motions on maps and satellite images.

Baroclinic waves and cyclonic development: Polar front and Bergen model of baroclinic development. Application of quasi-gesotrophic theory on case studies.

Influence of orography on large-scale atmospheirc circulation: Basics of general circulation of atmosphere and influence of orography. Stationary orographic waves. Vertical momentum transport.

Orographic lee cyclogenesis: theories of orographic lee cyclogenesis with focus on the Alpine lee cyclones. Application on weather maps. Synoptic climatology of the Alpine region and Slovenia.

Synoptic preconditioning of mesoscale processes: weather types in Europe and Meditteranean in associated mesoscale phenomena. Interaction of synoptic flow with mesoscale orography. Analysis of typical weather processes and extreme events.

Readings

J.E. Martin: Mid-Latitude Atmospheric Dynamics. J. Wiley & Sons, Ltd.
J.R. Holton: An introduction to dynamic meteorology. Academic Press.
H.B. Bluestein: Synoptic-Dynamic Meteorology in Midlatitudes, Volumes I,II. Oxford University Press.

Objectives and competences

Application of theoretical concepts and models from Dynamics meteorology I course in the analysis of weather systems in midlatitudes.

Understanding and application of the concept of atmospheric front in synoptic analysis.

Development of ability for practical work with weather observations and outputs of prognostic models for the analysis of synoptic weather.

Basic understanding of the role of orography in large-scale circulation and interaction of synoptic flow with Alps. Synoptic climatology of Alpine and Mediterranean region.

Intended learning outcomes

Knowledge and understanding: Application of theory and simplified models of synoptic-scale dynamics to interpret weather maps.

Understanding of mid-latitude weather systems based on data and model outputs.

Understanding of differences between simplified analytical solutions and real state presented on weather maps.

Application: Students will learn to recognize, define, and solve problems in atmospheric dynamics on synoptic scales as well as to recognize and discuss differences between theoretical solutions and real atmopsheric motions.

Reflection: The course builds systematic understadning of atmospheric dynamics on synoptic scales. Students are trained to recognize and analyze weather map based on underlying physical laws.

Transferable skills: Understanding of differences between simplified solutions and real state of a complex system. Understanding synoptic-scale weather development.

Learning and teaching methods

Lectures, discussion and training by using weather maps and satellite images, homework projects and students weather presentations.

Assessment

A number of projects (7) to be delivered during the course, project presentation
theoretical examination
Grades: 5 (fail), 6-10 (pass) (inagreement with the Statutes of the Univesity of Ljubljana)

Lecturer's references

Žagar, N., M. Žagar, J. Cedilnik. G. Gregoric and J. Rakovec, 2006: Validation of mesoscale low- level winds obtained by dynamical downscaling of ERA40 over complex terrain. Tellus, 58A, str. 445-455.
Žagar, N., G. Skok and J. Tribbia, 2011: Climatology of the ITCZ derived from ERA Interim reanalyses. J. Geophys. Res., 116, D15103, doi:10.1029/2011JD015695.
Žagar, N., K. Terasaki and H. Tanaka, 2012: Impact of the vertical discretization of analysis data on the estimates of atmospheric inertio-gravity energy. Mon. Wea. Rev., 140, 2297-2307.
Žagar, N., L. Isaksen, D. Tan and J. Tribbia, 2013: Balance properties of the short-range forecast errors in the ECMWF 4D-Var ensemble. Q. J. R. Meteorol. Soc., 139, 1229-1238. DOI: 10.1002/qj.2033